作者: 1369179610 时间: 2013-1-29 17:29 标题: 23 段一 After evidence was obtained in the 1920s that the universe is expanding,(that引导的定语从句后置) it became reasonable to ask: Will the universe continue to expand indefinitely, or is there enough mass in it(介词结构修饰mass,mass做不可数名词的时候表示物质或物质的质量,本文表示物质。it向前指代第一个出现的名词--universe) for the mutual attraction of its constituents(of引导修饰名词的定语后置) to bring this expansion to a halt?
It can be calculated that the critical(临界的) density of matter needed to brake(中止) the expansion and "close" the universe is equivalent to (等同于)three hydrogen atoms per cubic meter.
But the density of the observable universe—luminous matter in the form of galaxies(以星系形式存在的发光体)—comes to(涉及) only a fraction of this(this向前指代第一个出现的名词--universal density).
If the expansion of the universe is to stop, there must be enough invisible matter in the universe to exceed the luminous matter in density by a factor of roughly 70(factor是倍数的意思,by a factor of + 数词 是固定用法,表示以几倍).
段二 Our contribution to (我们对研究的贡献)the search for this "missing matter"(指不可见的宇宙) has been to study the rotational velocity of galaxies(星系自转速度,星系的速度,光速都用velocity表达) at various distances(相距不同的距离) from their center of rotation.
It has been known for some time that outside the bright nucleus of a typical spiral galaxy luminosity falls off rapidly with distance from the center(随着离中心距离的增大,习惯用法:luminosity do sth. with distance/n meters per minute).
If luminosity were a true indicator of mass, most of the mass would be concentrated toward the center. Outside the nucleus(介词结构开头的句式--没有逗号) the rotational velocity would decrease geometrically with distance from the center, in conformity with Kepler's law(方式状语后置).
Instead (副词开头句式--也没有逗号)we have found that the rotational velocity in spiral galaxies either remains constant with increasing distance from the center or increases slightly. This unexpected result indicates that the falloff in luminous mass with distance from the center is balanced by an increase in nonluminous mass.
段三 Our findings suggest that as much as 90 percent of the mass of the universe is not radiating at any wavelength with enough intensity to be detected on the Earth. Such dark matter could be in the form of extremely dim stars of low mass, of large planets like Jupiter, or of black holes(注意:of 是in the form of 的结构并列,并列短语的一种并列句式,最后一个并列加连词or), either small or massive(定语后置,这是说黑洞或大或小).
While it has not yet been determined whether this mass is sufficient to close the universe, some physicists consider it significant that estimates(估计值) are converging on(接近) the critical value(临界值).
本文是问题解决型的文章: 第一段提出问题:宇宙的扩张是否会停止?这与宇宙整体质量有关。物质密度临界值(the critical density of matter)是可以计算的,只是它不全面,没有包括不发光物质。 第二段解决问题:对不发光物质的研究--我们的研究发现虽然发光物质随离中心的距离数量减少但自转速度不变,推知不发光物质的量是随距离增多的。 第三段问题的进展:不发光物质占宇宙90%。这些不发光物质的量是否足够停止宇宙扩张需要临界值的进一步精确。
单词 obtain indefinitely mass mutual attraction constituents halt critical density brake be equivalent to observable luminous matter in the form of exceed by the factor of rotational velocity of galaxies spiral galaxy luminosity fall off geometrically in conformity with falloff in sth. an increase in sth. nonluminous radiate with some wavelength intensity dim be sufficient to do estimates be converging on critical value
题目: 116.The authors' study indicates that, in comparison with the outermost (离中心最远的)regions of a typical spiral galaxy, the region just outside the nucleus ca n be characterized as having
118.It can be inferred from information presented in the passage that if the density of the universe were equivalent to significantly less than (少于 加在名词前构成名词词组)three hydrogen atoms per cubic meter, which of the following would be true as a consequence?作者: 1369179610 时间: 2013-1-29 22:32 标题: 22(p408) While the most abundant and dominant species 前三行,while 引导的状语从句 within a particular ecosystem is often crucial in perpetuating the ecosystem,/ a "keystone" species, here defined as one whose effects are much larger than(it) would be predicted from its abundance, can 比较从句可以省略主语(或将than看作代词做主语用),保留谓语。其他的例子: There is more in it, than meets in the eye. 它的内涵较表面要深。 Don't eat more than is good for you. 不要吃的过量。 There may be more importance in it than would seem. 它的重要意义可能要比看上去大。
also play a vital role. But because complex species interactions may be involved, identifying a keystone species by removing the species and observing changes in the ecosystem is problematic.
关键物种对生态会起很大作用。但因物种间有联系,所以移走一种物种以观其反应值得商榷。
It might seem that certain traits would clearly define a species as a keystone species; for example, Pisaster ochraceus is often a keystone predator (P ochraceus是一种海星的名字,本句后半段提到了。) because it consumes and suppresses mussel populations, which in the absence of this starfish can be a dominant species.
某些特征可以确定关键物种,比如海星捕食淡菜。
But such predation on a dominant or potentially dominant (on:关于,也就是about) species occurs in systems that do as well as in systems that do not have species that play keystone roles. Moreover, whereas P. ochraceus occupies an unambiguous ( whereas:鉴于) keystone role on wave-exposed rocky headlands, in more wave-sheltered habitats the impact of P. ochraceus predation is weak or nonexistent, and at certain sites sand burial is responsible for eliminating mussels.
但没有关键物种的环境也存在类似现象。比如沙滩掩埋淡菜,这不是海星的功劳。
Keystone status appears to depend on context, whether of particular geography or of such factors as community diversity (for example, a reduction in species diversity may thrust more of the remaining species into keystone roles) and length of species interaction (since newly arrived species in particular may dramatically affect ecosystems).
题目: 113. (A) A species of bat is primarily responsible for keeping insect populations within an ecosystem low, and the size of the insect population in turn affects bird species within that ecosystem. (B) A species of iguana occupies a keystone role on certain tropical islands, but does not play that role on adjacent tropical islands that are adjacent 临近的 inhabited by a greater number of animal species. (C) Close observation of a savannah ecosystem savannah 无树大草原 reveals that more species occupy keystone roles within that ecosystem than biologists had previously believed. (D) As a keystone species of bee becomes more abundant, it has a larger effect on the ecosystem it inhabits. (E) A species of moth that occupies a keystone role in a prairie habitat develops coloration patterns coloration 染色,着色 that camouflage it from potential predators. camouflage 伪装 114. The passage suggests which of the following about the identification of a species as a keystone species? identification 鉴定
今天听见有 人说阅读,还有逻辑靠翻译是不行的,这点我不同意。但是很多人翻译完了之后发现没有用,或者是做题速度慢,我觉得是缺少复习和背诵,还不够熟练。不论是逻辑还是阅读首先都是必须要读懂,每次读完,里面的单词,词组,句式若还未熟练掌握,下次读不懂是正常的。作者: 1369179610 时间: 2013-1-30 02:10 标题: 21(p406) 段一 According to a recent theory, Archean-age -age构成名词 gold-quartz vein systems were formed more than two billion years ago from magmatic fluids that originated from molten granite-like bodies deep beneath the surface of the Earth.
This theory is contrary to the widely held view that the systems were deposited from metamorphic fluids, that is, from fluids that formed during the dehydration (that is: 即,就是)-ation = -ion ...行为/状态 词缀扩充: -ion -ation -ition -tion -sion -xion 均表示 ...行为,状态 例如: hesitation 犹豫 competition 竞争 confession 供人 dehydration 干燥 of wet sedimentary rocks.
Conclusion: Recent theory: vein systems were formed from magamatic fluids. contrary to widely held view--vein systems were formed from metamorphic fluids. 新理论:矿脉形成于M。新理论反对旧观点——矿脉形成于变质流体。
段二 The recently developed theory has considerable practical importance. Most of the gold deposits discovered during the original gold rushes were original gold rushes 最初的淘金热 exposed at the Earth's surface and were found be exposed and be found 并列句式 because they had shed trails of alluvial gold shed(shed,shed)发光;脱落;流出 that were easily traced by simple prospecting methods.
Although these same methods still lead to an occasional discovery, most deposits not yet not yet 尚未 discovered have gone undetected because they are buried and have no surface expression.
Conclusion: recent theory has importance, for instance, the trails of alluvial gold. However, simple methods are not efficient now. 新理论有使用价值,但现在由于地表的迹象模糊,简单的探测方式已经不再好使。
段三
The challenge in exploration is therefore to therefore 可以插在不定式之前 系动词之后 unravel the subsurface geology of an area and pinpoint the position of buried minerals.
Methods widely used today include analysis of aerial images that yield a broad geological overview; geophysical techniques that provide data on the magnetic, electrical, and mineralogical properties of the rocks being investigated; and sensitive chemical tests that are able to detect the subtle chemical halos that often envelop mineralization.
However, none of these high-technology methods are of any value if the sites to which they are applied have never mineralized, and to maximize the chances of discovery the explorer must therefore pay particular therefore 可以放在情态动词之后,动词之前 attention to selecting the ground formations most likely to be mineralized.
Such ground selection relies to varying degrees on conceptual models, which take into account theoretical studies of relevant factors.
Conclusion: challenge in exploration: subsurface geology and the position of minerals. modern tech: aerial images + sensitive chemical tests practical condition: areas being mineralized area selection: depend on conceptual models. 勘探的关键是地下地形和矿的位置。现代的技术包括航天图片和化学探测技术,但是前提是那片地区被开采过。地区的确定是根据复杂的理论模型确定的。
段四: These models are constructed primarily from empirical observations of known mineral deposits and from theories of ore-forming processes. The explorer uses the models to identify those geological features that are critical to the formation of the mineralization being modeled, and then tries to select areas for exploration that exhibit as many of the critical features as possible.
Conclusion: models are constructed from empirical observations. They are used to identify critical features.The areas containing the most critical features would be selected.
be concerned with methodology enumerate divide furnish
关心的是,研究的是 方法论 列举 分离 提供作者: 1369179610 时间: 2013-1-30 04:46 标题: 20(p404) 段一 Frazier and Mosteller 【assert that 】medical 陈述句式:sb.assert that sth.could be done by a move toward sth. research could be improved by a move toward larger, simpler clinical trials of medical treatments. Currently, researchers collect far more background information on patients 【than is】 strictly required for 比较级省略句式: 比较从句可以省略主语(或将than看作代词做主语用),保留谓语。其他的例子: There is more in it, than meets in the eye. 它的内涵较表面要深。 Don't eat more than is good for you. 不要吃的过量。 There may be more importance in it than would seem. 它的重要意义可能要比看上去大。 their trials— substantially more than hospitals collect —【thereby】 escalating costs of data 【修饰】thereby 连接副词,可以连接从句,分句,句子。其作用类似句子副词(句子副词即可以被看做是句子的副词,与句子的其他成分关系不大。举例:eventually)。
thereby造句: 1.He became a British citizen, thereby gaining the right to vote. 他成了英国公民,因而得到了投票权。 2.I gave him my advice; I hope he may profit thereby. 我已给他劝告了,希望他可以由此受益。 3.I have never been to that city; thereby I don't know much about it. 我从未去过那座城市,因此对它不怎么熟悉。 4.Thereby hangs a tale. 其中有点蹊跷[必有原因]。
collection, storage, and analysis. Although limiting information collection could increase the risk that researchers will overlook facts relevant to a study, Frazier and Mosteller【 contend that】 such risk, never 陈述观点句式:contend that... entirely eliminable from research, would still be small in most studies. 【Only in research on entirely 倒装: 副词做状语置于句首,倒装。(这样的副词有:then,only,along) new treatments are new and unexpected variables likely to arise.】
Conclusion: idea 1: Medical research could be improved by limiting information collection. the risk of overlooking some facts during routines is small.
段二 Frazier and Mosteller【 propose】 not only that 陈述性句式 propose not only that...but also that... researchers limit data collection on individual patients but also that researchers enroll more patients in clinical trials, 【thereby】 obtaining a more 【修饰】thereby句式 representative sample of the total population with the disease under study. Often researchers restrict study participation to patients who have no ailments besides those being studied. A treatment judged successful under these ideal conditions can then be evaluated under normal conditions. Broadening the range of trial participants, Frazier and Mosteller suggest, would enable researchers to 陈述句式 sb suggest evaluate a treatment's efficacy for diverse patients under various conditions and to evaluate its effectiveness for different patient subgroups. For example, the value of a treatment for a progressive disease may vary according to a patient's stage of disease. Patients' ages may also affect a treatment's efficacy.
Conclusion: F&M propose that trials should also enlarge the sample scale. And treatment judged sucessful under ideal conditions should be evaluated in normal conditions. F和M 认为 临床实验在精简信息收集的同时应扩大样本数量,并且成功的治疗方法应在正常的不同的情况下进一步评估。
assert a move toward clinical trials treatment substantially escalating overlook contend eliminable individual patient enroll representative sample restrict participation to ailment broaden the range of participants efficacy subgroup progressive the stage of disease
段一 The majority of successful senior managers do not closely follow the classical rational model of【 first clarifying goals, assessing the problem, formulating options, estimating likelihoods of success, making a decision, and only then taking action to implement the decision.】 难句类型:【复杂的修饰】,本句话【】里的部分是model的具体内容。 主干大意: 大多数成功的资深管理人员并不是严格地遵照经典的理性模型:【】。
Rather, in their day-by-day tactical maneuvers, these senior executives rely on what is vaguely termed "intuition" 【to】 manage a network of interrelated problems that require them to deal with ambiguity, inconsistency,novelty,and surprise; and 【to】 integrate action into the process of thinking.
这两个to是并列关系。
段一用两个句子讲了一件事:资深经理不按公式。而是靠直觉处理问题并将行动和想法结合在一起。
段二 Generations of writers on management have recognized that some practicing managers rely heavily on intuition. In general, however, such writers display a poor grasp of what intuition is. Some see it as the opposite of rationality; others view it as an excuse for capriciousness.
段二:有时直觉会被过分使用,但是作家讲不清直觉是什么,要么是理性的反面,要么是反复无常的借口。
段三: Isenberg's recent research on the cognitive processes of senior managers reveals that managers' intuition is neither of these.
【Rather,】 rather直接翻译成‘而是 ’ senior managers use intuition in at least five distinct ways. First, they intuitively sense when a problem exists. Second, managers rely on intuition to perform well-learned behavior patterns rapidly. This intuition is not arbitrary or irrational, but is based on years of painstaking practice and hands-on experience that build skills. A third function of intuition is to synthesize isolated bits of data and practice into an integrated picture, often in an "Aha!" experience. Fourth, some managers use intuition as a check on the results of more rational analysis. Most senior executives are familiar with the formal decision analysis models and tools, and those who use such systematic methods for reaching decisions are occasionally leery of solutions suggested by these methods which run counter to their sense of the correct course of action. Finally, managers can use intuition to bypass in-depth analysis and move rapidly to engender a plausible solution. Used in this way, intuition is an almost instantaneous cognitive process in 【which】 a manager recognizes familiar patterns.
One of the implications of the intuitive style of executive management is that "thinking" is inseparable from acting. Since managers often "know" what is right before they can analyze and explain it, they frequently act first and explain later. Analysis is inextricably tied to action in thinking/acting cycles, in which managers develop thoughts about their companies and organizations not by analyzing a problematic situation and then acting, but by acting and analyzing in close concert. Given the great uncertainty of many of the management issues that they face, senior managers often instigate a course of action simply to learn more about an issue. They then use the results of the action to develop a more complete understanding of the issue. One implication of thinking/acting cycles is that action is often part of defining the problem, not just of implementing the solution.
stipulate 规定,明确要求 作者: 1369179610 时间: 2013-2-1 11:15 标题: 18.(p400) 18. 段一: In 1955 Maurice Duverger published The Political Role of Women, the first 【behavioralist】,multinational comparison of women's electoral participation ever to use election data and survey data together.
behavioralist:运动,活动清单 后面本应直接连接to use election data and survey data together.
His study analyzed women's patterns of voting, political candidacy, and political activism in four European countries during the first half of the twentieth century. Duverger's research findings were that women voted somewhat less frequently than men (the difference 【narrowing】 the longer women had the vote) and were slightly more conservative.
* narrow在这里做动词,表示限于...范围内
完整的用法是: narrow sth. down (to sth.)把选择范围缩小到 举例: We have narrowed down the list to four candidates. We have narrowed the list down to four candidates. 我们把范围缩小到四位候选者身上。
Duverger's work set an early standard for the sensitive analysis of women's electoral activities. Moreover, 【to Duverger's credit,】 he placed his findings in the context of 【many】 of the historical processes that had 【shaped these activities. 】
|However, since these contexts have changed over time, Duverger's approach has【 proved】 more durable than his actual findings. |In addition, Duverger's discussion of his findings was hampered by his failure to consider certain specific factors important to women's electoral participation at the time he collected his data: the influence of political regimes, the effects of economic factors, and the ramifications of political and social relations between women and men. |Given this failure, Duverger's study foreshadowed the enduring limitations of the behavioralist approach to the multinational study of women's political participation.
* to one's credit 某人值得赞扬的地方是 * many 在这里是名词,许多 * shape these activities 形成,发展这些活动 * prove vi.结果是,原来是(本文释义) vt.证明
现象解释型 结论解释型 问题解决型 新老观点对比型 特别套路作者: 1369179610 时间: 2013-2-1 15:21 标题: 17.(P398) 17. 第一小层: Acting on the recommendation of 【a British government committee investigating the high incidence in white lead factories of illness among employees, most of whom were women,】 the Home Secretary proposed in 1895 that Parliament 【enact】 legislation that would prohibit women from 【holding most jobs】 in white lead factories.
难句1: 【复杂的修饰--复杂名词】 "a British government committee" 和 "investigating the high incidence in white lead factories of illness among employees" 是并列的同位语,most of whom were women 修饰employees。
句型1: sb propose that ...(should) do... * enact 是制定的意思,在前面有should省略了。 * hold a job in xx factory 在某工厂任职 hold 担任,任职 How long has he held office? 他任职有多久了?
本小层大意:按照委员会(…)调查的建议,本国秘书官提议国会应禁止妇女从事白铅工厂大多数的工作。
第二小层:
Although the Women's Industrial Defence Committee (WIDC), formed in 1892 in response to earlier legislative attempts to restrict women's labor, did not discount the white lead trade's potential health dangers, it opposed the proposal, viewing it 【as yet】 another instance of limiting women's work opportunities.
*as yet: 直到现在,知道过去某时 举例: an as yet unpublished report 直到现在也没发表的报告 As yet little was known of the cease of the disease. 当时人们对于这种疾病治疗方法几乎一无所知。
英语思维: 用of+N.结构进一步界定概念。 例如:known +of the cease +of the disease
本小层大意: 虽然WIDC并非不重视工厂对妇女健康的伤害,但是它否定了建议。
第三小层: Also opposing the proposal was the Society for Promoting the Employment of Women (SPEW), which attempted to challenge it by investigating the causes of illness in white lead factories. SPEW contended, and WIDC concurred, that controllable conditions in such factories were responsible for the development of lead poisoning. SPEW provided convincing evidence that lead poisoning could be avoided if workers were careful and clean and if already extant workplace safety regulations were stringently enforced.
SPEW也不同意这个建议,因为工作环境的控制和安全条例的实施可以避免疾病的发生。
第四小层: However, 【the Women's Trade Union League (WTUL), which had ceased in the late 1880s to oppose restrictions on women's labor】,supported the eventually enacted proposal, in part because safety regulations were generally not being enforced in white lead factories, where there were no unions (and little prospect of any) to pressure employers to comply with safety regulations.
停止反对妇女劳力限制的妇女工会
本小层大意: 妇女工会支持这个建议,因为没有联盟迫使安全条例的实施。
本文类型是观点对比型:
一个调查提出建议:限制妇女在铅厂的工作。 WIDC和SPEW不同意 VS 工会同意
单词:
act on investigate incidence white lead factory  arliament enact legislation prohibit in response to discount trade oppose as yet work opportunity promote contend concur controllable conditions extant stringently enforce cease prospect pressure...to do comply with
Acting on the recommendation of a British government committee investigating the high incidence in white lead factories of illness among employees, most of whom were women, the Home Secretary proposed in 1895 that Parliament enact legislation that would prohibit women from holding most jobs in white lead factories.
题目:
contention hygiene household 论点 卫生 国内的
作者: 1369179610 时间: 2013-2-1 18:26 标题: 16(p396) 16. 段一 It was 【once believed】 that the brain was independent of metabolic processes occurring elsewhere in the body. In recent studies,【 however,】 we have discovered that the production and release in brain neurons of the neurotransmitter serotonin (neurotransmitters are compounds that neurons use to transmit signals to other cells) depend directly on the food that the body processes.
段二 Our 【first studies sought to determine】 whether the increase in serotonin observed in rats given a large injection of the amino acid tryptophan might also occur after rats ate meals that change tryptophan levels in the blood. 【We found that,】 immediately after the rats began to eat, parallel elevations occurred in blood tryptophan, brain tryptophan, and brain serotonin levels. 【These findings suggested that】 the production and release of serotonin in brain neurons were normally coupled with blood-tryptophan increases. In 【later studies】 we found that injecting insulin into a rat's bloodstream also caused parallel elevations in blood and brain tryptophan levels and in serotonin levels. 【We then decided to see】 whether the secretion of the animal's own insulin similarly affected serotonin production. 【We gave】 the rats a carbohydrate-containing meal that we knew would elicit insulin secretion. 【As we had hypothesized,】 the blood tryptophan level and the concentrations of tryptophan and of serotonin in the brain increased after the meal.
本段大意: first studies sought to determine:注射大量色氨酸的小鼠饭后色氨酸的增长是否会诱发血清素峰值。 We found that:刚吃完饭,血液和大脑里的色氨酸以及大脑中的血清素都达到峰值。 later studies:发现胰岛素注射会达到上个实验同样的效果。 We then decided to see:动物自身的胰岛素是否有同样的作用。 We gave: 碳水化合物(可诱发胰岛素峰值)给小鼠吃 As we had hypothesized:血液大脑的色氨酸值和大脑血清素值达到峰值。
段三 【Surprisingly, however,】 when we added a large amount of protein to the meal, brain tryptophan and serotonin levels fell. 【Since protein contains tryptophan, why should it depress brain tryptophan levels?】 【The answer】 lies in the mechanism that provides blood tryptophan to the brain cells. This same mechanism also provides the brain cells with other amino acids found in protein, such as tyrosine and leucine. The consumption of protein increases blood concentration of the other amino acids much more, proportionately, than it does that of tryptopha The more protein is in a meal, the lower is the ratio of the resulting blood -tryptophan concentration to the concentration of competing amino acids, and the more slowly is tryptophan provided to the brain. 【Thus】 the more protein in a meal,the less serotonin subsequently produced and released.
段三大意: Surprisingly, however,:增加蛋白质的食用时,大脑色氨酸和血清素下降了。 Since protein contains tryptophan, why should it depress brain tryptophan levels? The answer:提供血液色氨酸给脑细胞的机制--蛋白质在提供色氨酸的同时提供更多的其他氨基酸,因此相较而言色氨酸的浓度比例降低了,色氨酸提供给大脑的速度也变慢了。 Thus:食物中蛋白质越多,越少的血清素会被产生和释放。
metabolic process elevation be coupled with elicit secretion lie in resulting 新陈代谢的 加工 峰值 联系 引出 分泌物 在于 结果的
题目:
the lower is the ratio of the resulting blood -tryptophan concentration to the concentration of competing amino acids
It can be inferred from the passage that which of the following would be LEAST likely to be a potential source of aid to a patient who was not adequately producing and releasing serotonin? (双重否定)
when the authors began(开始以后) their first studies, they were aware that ...
Two works published in 1984 demonstrate 【contrasting】 approaches to writing the history of United States women. Buel and Buel's biography of Mary Fish (1736-1818) makes little 【effort to place】 her story in the context of recent 【historiography】 on women.
*contrasting:极不相同的,迥异的 The book explores contrasting views of the poet's early work. 次数探讨了人们对这位诗人的早期作品截然不同的观点。 *effort to do sth. 尝试 *historigraphy 历史编纂
Lebsock, meanwhile, attempts not only to write the history of women in one southern community, but also to 【redirect】 two decades of historiographical debate 【as to】 whether women gained or lost status in the nineteenth century as compared with the eighteenth century. *redirect sth. (to sth.)重新整理,使用 *as to 关于,至于 大意:同时,L,不仅在写南部委员会的一个妇女的历史,还重新使用了20年间的关于妇女是否失去地位的历史编纂讨论。
Although both books offer the reader the opportunity to assess this controversy regarding women's status, only Lebsock's deals with it directly. She examines several different aspects of women's status, helping to refine and resolve the issues. She concludes that while women gained autonomy in some areas, especially in the private sphere, they lost it in many aspects of the economic sphere.
【More importantly,】she shows that the debate itself depends on frame of reference: in many respects, women lost power in relation to men, for example, as certain jobs(delivering babies, supervising schools) were taken over by men.【Yet】 women also gained power in comparison with their previous status, owning a higher proportion of real estate, for example.
【In contrast,】 Buel and Buel's biography provides ample raw material for questioning the myth, fostered by some historians, of a colonial golden age in the eighteenth century but does not give the reader much guidance in analyzing the controversy over women's status.
controversy refine conclude resolve autonomy sphere frame of reference in relation to in comparison with ample foster colonial 争论 提炼 得出结论 分解 自主权 范围 参照系 与。。。有关 相比之下 足够的 促进 殖民的
难句:
Buel and Buel's biography provides ample raw material for questioning the myth, fostered by some historians, of a colonial golden age in the eighteenth century.
题目:
prevalent supervision speculate occupations characterizations 流行的 监督 猜测 职业 特征描述作者: 1369179610 时间: 2013-2-2 17:14 14. 段一 【 Milankovitch】 proposed in the early twentieth century that the ice ages were caused by variations in the Earth's orbit around the Sun.【 For some time】 this theory was considered untestable, largely【 because】 there was no sufficiently precise chronology of the ice ages with which the orbital variations could be matched.
本段大意:Milankovitch认为冰河世纪是地球轨道变化导致的。For some time,这个说法无法被证实,because 没有确切的年代表用于与变化匹配。
段二 To establish such a chronology it is necessary to determine the relative 【amounts of land ice】that existed at various times in the Earth's past.A recent discovery makes such a determination possible: relative land-ice volume for a given period can be deduced from the ratio of two oxygen isotopes, 16 and 18, found in ocean sediments.Almost all the oxygen in water is oxygen 16,but a few molecules out of every thousand incorporate the heavier isotope 18.When an ice age begins,the continental ice sheets grow, steadily reducing the amount of water evaporated from the ocean that will eventually return to it.Because heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18. 【The degree of enrichment can be determined】 by analyzing ocean sediments of the period, because these sediments are composed of calcium carbonate shells of marine organisms, shells that were constructed with oxygen atoms drawn from the surrounding ocean. The higher the ratio of oxygen 18 to oxygen 16 in a sedimentary specimen, the more land ice there was when the sediment was laid down.
本段大意: 年代表的确定需要测量the amounts of land ice的变化。计算海底沉淀物的氧18。这是因为沉积物中有贝类,它们吸收周围海洋的氧原子制造自己的壳。壳中含有氧18含量越高,沉积物沉寂下来的那个时期大陆冰越多。
段三 As an indicator of shifts in the Earth's climate, the 【isotope record has two advantages.】 First, it is a global record: there is remarkably little variation in isotope ratios in sedimentary specimens taken from different continental locations. Second, it is a more continuous record than that taken from rocks on land. Because of these advantages, sedimentary evidence can be dated with sufficient accuracy by radiometric methods to establish a 【precise chronology of the ice ages.】 The dated isotope record shows that the fluctuations in global ice volume over the past several hundred thousand years have a pattern: an ice age occurs roughly once every 100,000 years. These data have established 【a strong connection between】 variations in the Earth's orbit and the periodicity of the ice ages.
段四 However, it is important to note that other factors, such as volcanic particulates or variations in the amount of sunlight received by the Earth, could potentially have affected the climate. The advantage of the Milankovitch theory is that it is testable; changes in the Earth's orbit can be calculated and dated by applying Newton's laws of gravity to progressively earlier configurations of the bodies in the solar system. Yet the lack of information about other possible factors affecting global climate does not make them unimportant.
难句背诵: fluctuations in global ice volume variations in the amounts of sunlight received by the Earth *in的用法:表示某一个方面。
When the ice age begins, the continental ice sheets grow, steadily reducing the amount of water evaporated from the ocean that will eventually return to it. 本句话的理解质量直接关系到64题能否作对。 关键点:蒸发的海水以降雨的形式回到大陆冰块上时随即被冰冻,从而不会再流回到海洋中。(因此海洋中氧18的浓度越来越高。)
Yet the lack of information about other possible factors affecting global climate does not make them unimportant.
题目:
consistent open up predominated stretch back precipitation susceptible deterioration 连续的 打开 占支配地位的 展开 降雨 易受影响的 变坏,恶化
inference 题目 要回到原文定位,尤其是那种有些模糊的概念。(67)
Milankovirch proposed in the early twentieth century that the ice ages were caused by variations in the Earth’s orbit around the Sun. for some time this theory was considered untestable, largely because there was no sufficiently precise chronology of the ice ages with which the orbital variations could be matched. To establish such a chronology it is necessary to determine the relative amounts of land ice that existed at various tines in the Earth’s past. A recent discovery makes such a determination possible: relative land-ice volume for a given period can be deduced from the ratio of two oxygen isotopes, 16 and 18, found in ocean sediments. Almost all the oxygen in water is oxygen 16, but a few molecules out of every thousand incorporate the heavier isotope 18. when an ice age begins, the continental ice sheets grow, steadily reducing the amount of water evaporated from the ocean that will eventually return to it. Because heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18. the degree of enrichment can be determined by analyzing ocean sediments of the period, because these sediments of the period, because these sediments are composed of calcium carbonate shells of marine organisms, shells that were constructed with oxygen atoms drawn from the surrounding ocean. The higher the ratio of oxygen 16 in a sedimentary specimen, the more land ice there was when the sediment was laid down. As an indicator of shifts in the Earth’s climate, the isotope record has two advantages. First, it is a global record: there is remarkably little variation in isotope ratios in sedimentary specimens taken from different continental locations. Second, it is a more continuous record than that taken from rocks on land. Because of these advantages, sedimentary evidence can be dated with sufficient accuary by radiometric methods to establish a precise chronology of the ice ages. The dated isotope record shows that the fluctuations in global ice volume over the past several hundred thousand years have a pattern: an ice age occurs roughly once every 100,000 years. These data have established a strong connection between variations in the Earth’s orbit and the periodicity of the ice ages. However, it is important to note that other factors, such as volcanic particulates or variations in the amount of sunlight received by the Earth, could potentially have affected the climate. The advantage of the Milankovitch theory is that it is testable; changes in the Earth’s orbit can be calculated and dated by applying Newton’s laws of gravity to progressively earlier configurations of the bodies in the solar system. Yet the lack of information about other possible factors affecting global climate does not make them unimportant. 米兰科维奇早在二十世纪初就提出冰期是由地球环绕太阳的轨道变化引起的。原先人们认为这一理论是无法证实的,主要是因为没有足够准确的冰期年表可以和轨道变化规律做比照。 要建立冰期年表就需要测定以前地球上各个不同时期的陆冰相对存量。最新发现使这种测定成为可能:一个特定时期的相对陆冰量可以从海洋沉积物中氧的同位素O16 和O18 的比例推算出来。在水里,几乎所有的氧都是O16 ,但是,在一千个水分子中,会有几个与O18 结合。冰期开始的时候,大陆冰盖逐渐增大,这使得从海洋蒸发最终又回到海洋的水稳步减少。当水份从海洋表面蒸发时,相对较重的O18 会留下来,所以海水中的O18 会越来越多。通过对这一时期海洋沉积物的分析就可以测定O18的含量,因为这些沉积物是由海洋微生物的碳酸钙骨骼构成的,而这些骨骼又是获取周边海域的氧原子构建的。沉积物样本中O18和O16 的比例越高,这些沉积物形成时期的陆冰面积就越大。 作为地球气候转变的标志,这种同位素记录有两大优势。其一,它是全球性的记录,从不同大洲取来的沉积物样本中同位素比例几乎没有区别。其二,与从岩石和土壤中获得的记录相比,它更具有连续性。因为有这些优势,才能通过辐射测量法测定沉积物样本的年代,从而建立准确的陆冰年表。确定年代的同位素记录显示出在过去几十万年中全球冰川变换的规律:冰期大约每100000年出现一次。这些数据还显示出地球轨道变化与冰期周期性之间的紧密联系。 然而,要注意的是火山微粒和地球所吸收阳光量的变化也可能是影响气候变化的潜在因素。米兰科维奇理论的优势在于它是可测定的。用牛顿重力定律可以计算出地球轨道变化并确定更早的太阳系天体布局年代。缺少其它影响地球气候的可能因素并不意味已经确定的因素不重要。作者: 1369179610 时间: 2013-2-2 20:12 标题: 13.(p390) 13.
段一 In Winters v. United States (1908), the Supreme Court held that the right to use waters flowing through or adjacent to the Fort Belknap Indian Reservation was reserved to American Indians by the treaty establishing the reservation. Although this treaty did not mention water rights, the Court ruled that the federal government, when it created the reservation, intended to deal fairly with American Indians by 【reserving】 for them the waters 【without which their lands would have been useless.】 Later decisions, 【citing Winters,】 established that 【courts can find federal rights to reserve water for particular purposes if (1) the land in question lies within an enclave under exclusive federal jurisdiction, (2) the land has been formally withdrawn from federal public lands —i.e., withdrawn from the stock of federal lands available for private use under federal land use laws —and set aside or reserved, and (3) the circumstances reveal the government intended to reserve water as well as land when establishing the reservation. 】
reserve:保持,拥有,保留某种权利 举例: The management reserves the right to refuse admission. 管理部门有权拒绝接收。 all rights reserved 版权所有
虚拟语气之含蓄条件句的用法-条件暗含在短语中:
What would I have done [without] you? (have done 表示的是已经完结的动作。)
[But for your help] we couldn't have succeeded in your experiment.
He must have the strenghtn of the hippopotamus, [or] he never could have vanquished that great beast.
[Alone,] he would have been terrified.
It would be easier to do it this way.(to do 表示的是即将发生的动作。)
同位语修饰的使用:(很赞的写作手法~~~)
... was reserved to American Indians by the treaty [establishing the reservsation].
本句中 establishing the reservsation 可以和 the treaty 交换位置或相互代替。
Later decisions, [citing Winters,] established that....
同理,citing winters 可以和 decisions 相互交换位置 或相互代替。
1.find 裁决 举例: How do you find the accused? The jury found him guilty of manslaughter.(过失杀人) The court found in her favor.
段二 Some American Indian tribes have also established water rights through the courts based on their traditional diversion and use of certain waters prior to the United States' acquisition of sovereignty. For example, the Rio Grande pueblos already existed when the United States acquired sovereignty over New Mexico in 1848. Although they at that time became part of the United States, the pueblo lands never formally constituted a part of federal public lands; in any event, no treaty, statute, or executive order has ever designated or withdrawn the pueblos from public lands as American Indian reservations. This fact, however, has not barred application of the Winters doctrine. What constitutes an American Indian reservation is a question of practice, not of legal definition, and the pueblos have always been treated as reservations by the United States. This pragmatic approach is buttressed by Arizona v. California (1963), wherein the Supreme Court indicated that the manner in which any type of federal reservation is created does not affect the application to it of the Winters doctrine. Therefore, the reserved water rights of Pueblo Indians have priority over other citizens' water rights as of 1848, the year in which pueblos must be considered to have become reservations. 本段大意:一些部落保留了水权。例如RG村庄,虽然在1848年,它属于美国,但是其土地并不归美国国有。但是这没能阻止W 文件的实施,这个村庄也市场被认为是美国的专用地。不过只要不干预w法案的实施,美国政府是赞同这种灵活处理的。因此,从1848年(RG村庄被看做是美国的专用地)起,印第安人的水权要高于其他公有水权。
hold waters adjacent to fort reservation reserve treaty water rights rule fairly decisions citing establish in question enclave diversion acquisition pueblo constitute executive order bar doctrine pragmatic buttress priority over as of
the land in question lies within an enclave under exclusive federal jurisdiction
题目:
rescind criteria explicitly as such disputing defer to prior primarily 废除 标准 明确地 本身 争论的 遵从 优先的 根本上
60题:文章为何提到这个事实——RG村庄从未从根本上被回收,成为美国的公有土地? A 暗含解释为甚么之前有观点认为RG不适用于w法案。作者: 1369179610 时间: 2013-2-3 00:42 12.
第一小层: Among the myths taken as fact by the environmental managers of most corporations is the belief that environmental regulations affect all competitors in a given industry uniformly.
In reality,regulatory costs —and therefore compliance —fall unevenly, economically disadvantaging some companies and benefiting others.For example,a plant situated near a number of larger noncompliant competitors is less likely to attract the attention of local regulators than is an isolated plant, and less attention means lower costs. Additionally, large plants can spread compliance costs such as waste treatment across a larger revenue base; on the other hand, some smaller plants may not even be subject to certain provisions such as permit or reporting requirements by virtue of their size.
第三小层: Finally, older production technologies often continue to generate toxic wastes that were not regulated when the technology was first adopted. New regulations have imposed extensive compliance costs on companies still using older industrial coal-tfired burners that generate high sulfur dioxide and nitrogen oxide outputs, for example, whereas new facilities generally avoid processes that would create such waste products.
第四小层: By realizing that they have discretion and that not all industries are affected equally by environmental regulation,environmental managers can help their companies to achieve a competitive edge by anticipating regulatory pressure and exploring all possibilities for addressing how changing regulations will affect their companies specifically.
难句: Among the myths taken as fact by the environmental managers of most corporations is the belief that environmental regulations affect all competitors in a given industry uniformly.
Additionally, large plants can spread compliance costs such as waste treatment 【across】? a larger revenue base; on the other hand, some smaller plants may not even be subject to certain provisions such as permit or reporting requirements by virtue of their size.
a plant situated near a number of larger noncompliant competitors is less likely to attract the attention of local regulators than is an isolated plant
题目 It can be inferred from the passage that a large plant might have to spend more than a similar 【but】? smaller plant on environmental compliance because the larger plant is
(This passage was adapted from an article written in 1992.)
第一小层: Some observers have attributed the dramatic growth in temporary employment that occurred in the United States during the 1980s to increased participation in the workforce by certain groups, such as first-time or reentering workers, who supposedly prefer such arrangements.
some observers:1980s' growth in temporary employment is due to increased participation in the workforce by certain groups. 某些观察员观点:1980年短工的增长与劳动力中特殊群体参与的增长有关。
第二小层: || However, statistical analyses reveal that demographic changes in the workforce did not correlate with variations in the total number of temporary workers. Instead, these analyses suggest that factors affecting employers account for the rise in temporary employment. 但分析数据显示,是影响雇主的因素导致的临时工作的上升。
第三小层: ||One factor is product demand: temporary employment is favored by employers who are adapting to fluctuating demand for products while at the same time seeking to reduce overall labor costs. Another factor is labor's reduced bargaining strength, which allows employers more control over the terms of employment. 两个因素:1)产品需求 2)劳动力的讨价还价能力
第四小层: || Given the analyses, which reveal that growth in temporary employment now far exceeds the level explainable by recent workforce entry rates of groups said to prefer temporary jobs, firms should be discouraged from creating excessive numbers of temporary positions. 需要抑制公司增加临时工的倾向。
第五小层: Government policymakers should consider mandating benefit coverage for temporary employees, promoting pay equity between temporary and permanent workers, assisting labor unions in organizing temporary workers, and encouraging firms to assign temporary jobs primarily to employees who explicitly indicate that preference. 政府需要为临时工增收,纳入工会管理,鼓励企业优先录取主动倾向做临时工的人临时工作。
题目: correspond to equitable facilitate initiate 与。。。相符 公正的 促进 发起
作者: 1369179610 时间: 2013-2-3 17:12 标题: 10 现象解释型的逻辑: 现象--解释--理论不足之处(仍需要进一步探讨的地方) 10. In the seventeenth -century Florentine textile industry, women were employed primarily in low- paying, low -skill jobs. To explain this segregation of labor by gender, economists have relied on the useful theory of human capital. According to this theory, investment in human capital —the acquisition of difficult job-related skills—generally benefits individuals by making them eligible to engage in well -paid occupations. Women's role as child bearers, however, results in interruptions in their participation in the job market (as compared with men's) and thus reduces their opportunities to acquire training for highly skilled work. In addition, the human capital theory explains why there was a high concentration of women workers in certain low - skill jobs, such as weaving, but not in others, such a s combing or carding, by positing that because of their primary responsibility in child rearing women took occupations that could be carried out in the home. There were, however, differences in pay scales that cannot be explained by the human capital theory. For example, male construction workers were paid significantly higher wages than female taffeta weavers. The wage difference between these two low -skill occupations stems from the segregation of labor by gender: because a limited number of occupations were open to women, there was a large supply of workers in their fields, and this "overcrowding" resulted in women receiving lower wages and men receiving higher wages.
逻辑链:(现象解释型) 现象——women were employed in low-paying low-skill jobs. 解释——theory of human capital difficult skills --->well-paid occupations--->women -- low skill ps:theory explains why women prefer certain low-skill jobs 理论缺陷——cannot explain pay scales example 原因:demands and supply
单词: segregation of labor by gender acquisition of eligible child bearer interruptions in weaving child rearing take occupations pay scales construction worker taffeta weaver describe... as.. articulate flaw substantiate accommodate domestic occupational
According to this theory,investment in human capital--the acquisition of difficult job-related skills--generally benefits individuals by making them eligible to engage in well-paid occupations.
The human capital theory explain why there was a high concerntration of women workers in certain low-skill jobs, such as weaving, but not in others, such as combing or carding, by poisiting that because of their primary responsibility in child rearing women took occupations that could be carried out in the home.作者: 1369179610 时间: 2013-2-3 19:56 标题: 9.(p382)首句是结论---结论解释型/观点对比型 逻辑简图:logical structure,main idea和tone 句子: supporting idea 和 evaluation 迁移能力:inference 和 application
注意中心词在文中的同义替换
9.
【Manufacturers have to do more】 than build large manufacturing plants to realize economies of scale. It is true that as the capacity of a manufacturing operation rises, costs per unit of output fall as plant size approaches "minimum efficient scale," where the cost per unit of output reaches a minimum, determined roughly by the state of existing technology and size of the potential market. However, minimum efficient scale cannot be fully realized unles s a steady "throughput" (the flow of materials through a plant) is attained. The throughput needed to maintain the optimal scale of production requires careful coordination not only of the flow of goods through the production process, but also of the flow of input from suppliers and the flow of output to wholesalers and final consumers. If throughput falls below a critical point, unit costs rise sharply and profits disappear. A manufacturer's fixed costs and "sunk costs" (original capital investment in the physical plant) do not decrease when production declines due to inadequate supplies of raw materials, problems on the factory floor, or inefficient sales networks. 【 Consequently,】 potential economies of scale are based on the physical and engineering characteristics of the production facilities—that is, on tangible capital —but realized economies of scale are operational and organizational, and depend on knowledge, skills, experience, and teamwork —that is, on organized human capabilities, or 【intangible capital】. The importance of investing in intangible capital becomes obvious when one looks at what happens in new 【capital -intensive】 manufacturing industries. Such industries are quickly dominated, not by the first firms to acquire technologically sophisticated plants of theoretically optimal size, but rather by the first to exploit the full potential of such plants. Once some firms achieve this, a market becomes extremely hard to enter. Challengers must construct comparable plants and do so after the first movers have already worked out problems with suppliers or with new production processes. Challengers must create distribution networks and marketing systems in markets where first movers have all the contacts and know-how. And challengers must recruit management teams to compete with those that have already mastered these functional and strategic activities.
本文逻辑:(结论解释型:结论-解释-举例) 结论:Manufacturers have to do more than build large co.to realize economies of scale. 解释:potential economies of scale are based on both tangible and intangible capital. 举例:Intangible capital are of obvious importance in new capital intensive manufacturing industries.
难句: It is true that as the capacity of a manufacturing operation rises, costs per unit of output fall as plant size approaches "minimum efficient scale," where the cost per unit of output reaches a minimum,determined roughly by the state of existing technology and size of the potential market. The "throughput" needed to maintain the optimal scale of production requires careful coordination not only of the flow of goods through the production process, but also of the flow of input from suppliers and the flow of output to wholesalers and final consumers." A manufacturer's fixed costs and "sunk costs" (original capital investment in the physical plant) do not decrease when production declines due to inadequate supplies of raw materials, problems on the factory floor, or inefficient sales networks.作者: 1369179610 时间: 2013-2-4 01:50 标题: 8.(p380) 8.
段一 Current feminist theory, in validating women's own stories of their experience, has encouraged scholars of women's history to view the use of women's oral narratives as the methodology, next to the use of women's written autobiography, that brings historians closest to the "reality" of women's lives.
Such narratives, unlike most standard histories(历史记载), represent experience from the perspective of women, affirm(承认) the importance of women's contributions(贡献), and furnish present-day women with (提供)historical continuity(连续性) that is essential to their identity, individually and collectively.
Scholars of women's history should, however, be as cautious 【about】 accepting oral narratives at face value as they already are 【about】 written memories. Oral narratives are【 no more likely than】不会比..更像 are written narratives to provide a disinterested commentary on events or people. Moreover, the stories people tell to explain themselves are shaped by narrative devices and storytelling conventions, as well as by other cultural and historical factors, in ways that the storytellers may be unaware of. The political rhetoric of a particular era, for example, may influence women's interpretations of the significance of their experience. Thus a woman who views the Second World War as pivotal in increasing the social acceptance of women's paid work outside the home may reach that conclusion partly and unwittingly because of wartime rhetoric encouraging a positive view of women's participation in such work.
单词: feminist validate narratives methodology next to autobiography histories affirm contributions furnish... with... continuity at face value no more than moreover be shaped by conventions interpretation pivotal acceptance unwittingly wartime rhetoric
Such narratives, unlike most standard histories(历史记载), represent experience from the perspective of women, affirm(承认) the importance of women's contributions(贡献), and furnish present-day women with (提供)historical continuity(连续性) that is essential to their identity, individually and collectively.
Oral narratives are【 no more likely than】不会比..更像 are written narratives to provide a disinterested commentary on events or people.
题目
refrain from skeptically depict ..
避免 持怀疑地 描绘 作者: 1369179610 时间: 2013-2-4 09:49 标题: 7.(p378) 7.新旧观点对比型 In 1988 services moved ahead of manufacturing as the main product of the United States economy. But what is meant by "services"? Some economists define a service as something that is produced and consumed simultaneously, for example, a haircut. The broader, classical definition is that a service is an intangible something that cannot be touched or stored. Yet electric utilities can store energy, and computer programmers save information electronically. Thus, the classical definition is hard to sustain.
新观点:服务是立即消费品 旧观点:服务是无形的资产。 可是由于电力可储存,服务又以电子信息的方式存在电脑里,因此古典定义就值得商榷了 The United States government's definition is more practical: services are the residual category that includes everything that is not agriculture or industry. Under this definition, services includes activities as diverse as engineering and driving a bus. However, besides lacking a strong conceptual framework, this definition fails to recognize the distinction between service industries and service occupations. It categorizes workers based on their company's final product rather than on the actual work the employees perform. Thus, the many service workers employed by manufacturers— bookkeepers or janitors, for example—would fall under the industrial rather than the services category. Such ambiguities reveal the arbitrariness of this definition and suggest that, although practical for government purposes, it does not accurately reflect the composition of the current United States economy. 政府观点:除了工农业的都是服务。但这个观点无法区分服务业和服务性工作:这是因为这个观点是以公司的最终产品来分类的,所以制造商的记账员和看门人也被归为工业,而不是服务业。这个模糊性显示了这个概念的随意性,虽然对于政府来说很好用,但是它没有真正地影响美国的经济构成。
本文是新旧观点对比型: 经济学家的观点,古典观点 政府观点以及缺陷
单词:
electric utilities electronically residual diverse conceptual bookkeeper janitor arbitrariness composition of
电力 电子地 剩余的 多种多样的 观念的,概念的 会计 看门人 任意恣意 组成,构成
题目 pragmatic 实际的 作者: 1369179610 时间: 2013-2-4 11:39 标题: 6.(p374) 6. 段一 In terrestrial environments, gravity places special demands on the cardiovascular systems of animals. Gravitational pressure can cause blood to pool in the lower regions of the body, making it difficult to circulate blood to critical organs such as the brain. Terrestrial snakes, in particular, exhibit adaptations that aid in circulating blood against the force of gravity.
段二 The problem 【confronting】 terrestrial snakes is best illustrated by what happens to sea snakes when removed from their supportive medium. Because the vertical pressure gradients within the blood vessels are counteracted by similar pressure gradients in the surrounding water, the distribution of blood throughout the body of sea snakes remains about the same regardless of their orientation in space, provided they remain in the ocean. When removed from the water and tilted at various angles with the head up, however, blood pressure at their midpoint drops significantly, and at brain level falls to zero. That many terrestrial snakes in simil ar spatial orientations do not experience this kind of circulatory failure suggests that certain adaptations enable them to regulate blood pressure more effectively in those orientations.
confronting: 面临,降临于 the economic problems confronting the country 这个国家所面临的经济问题 陆栖蛇面临的困难用海蛇移到陆地上碰见的困难就很容易清楚了,因为海中压强血液和水是互相抵消的,所以海蛇整个身体上各个点的压强都是一样的,只要它们还在水里。当在陆地上时,不同的角度倾斜血压变化非常快,这是陆栖蛇不会遇见的情况。这说明它们已经很好的适应了这种方向的改变,以及时调整血压。
段三 One such adaptation is the closer proximity of th terrestrial snake's heart to its head, which helps to ensure circulation to the brain, regardless of the snake's orientation in space. The heart of sea snakes can be located near the middle of the body, a position that minimizes the work entailed in circulating blood to both extremities. In arboreal snakes, however, which dwell in trees and often assume a vertical posture, the average distance from the heart to the head can be as little as 15 percent of overall body length. Such a location requires that blood circulated to the tail of the snake travel a greater distance back to the heart, a problem solved by another adaptation. When climbing, arboreal snakes often pause momentarily to wiggle their bodies, causing waves of muscle contraction that advance from the lower torso to the head. By compressing the veins and forcing blood forward, these contractions apparently improve the flow of venous blood returning to the heart.
When Jamaican-born social activist Marcus Garvey came to the United States in 1916, he arrived at precisely the right historical moment. What made the moment right was the return of African American soldiers from the First World War in 1918, which created an ideal constituency(支持) 【for someone】 with Garvey's message of unity(统一团结的使命), pride, and improved conditions(条件) for African American communities.
Hoping to participate in the traditional American ethos of individual success, many African American people entered the armed forces with enthusiasm, only to find themselves segregated from white troops and subjected to numerous indignities. They returned to a United States that was as segrega ted as it had been before the war. Considering similar experiences, anthropologist Anthony F. C. has argued that when a perceptible gap arises between a culture's expectations and the reality of that culture, the resulting tension can inspire a revitalization movement: an organized, conscious effort to construct a culture that fulfills long standing expectations. 当现实与希望违背的时候,新兴的运动就会开始,要达到希望。 Some scholars have argued that Garvey created the consciousness from which he built, in the 1920s, the largest revitalization movement in African American history. But such an argument only tends to obscure the consciousness of identity, strength, and sense of history that already existed in the African American community. Garvey did not create this consciousness; rather, he gave this consciousness its political expression.
Archaeology as a profession faces two major problems. First, it is the poorest of the poor. Only paltry sums are available for excavating and even less is available for publishing the results and preserving the sites once excavated. Yet archaeologists deal with priceless objects every day. Second, there is the problem of illegal excavation, resulting in museum-quality pieces being sold to the highest bidder(最高价竞买人).
两个问题: 1.穷 2.非法挖掘 I would like to make an outrageous suggestion that would at one stroke provide funds for archaeology and reduce the amount of illegal digging. I would propose that scientific archaeological expeditions and governmental authorities sell excavated artifacts on the open market. Such sales would provide substantial funds for the excavation and preservation of archaeological sites and the publication of results. At the same time, they would break the illegal excavator's grip on the market, thereby decreasing the inducement to engage in illegal activities.
解决办法:市场经济,一举两得 You might object that professionals excavate to acquire knowledge, not money. Moreover, ancient artifacts are part of our global cultural heritage, which should be available for all to appreciate, not sold to the highest bidder. I agree. Sell nothing that has unique artistic merit or scientific value. But, you might reply, everything that comes out of the ground has scientific value. Here we part company. Theoretically, you may be correct in claiming that every artifact has potential scientific value. Practically, you are wrong. 驳斥反对意见: 不是所有的物件都是有科学研究价值。 I refer to the thousands of pottery vessels and ancient lamps that are essentially duplicates of one another. In one small excavation in Cyprus, archaeologists recently uncovered 2,000 virtually indistinguishable small jugs in a single courtyard. Even precious royal seal impressions known as I'melekh handles have been found in abundance —more than 4,000 examples so far. 驳斥反对意见: 有的同种物件个数很多。 The basements of museums are simply not large enough to store the artifacts that are likely to be discovered in the future. There is not enough money even to catalog the finds; as a result, they cannot be found again and become as inaccessible as if they had never been discovered. Indeed, with the help of a computer, sold artifacts could be more accessible than are the pieces stored in bulging museum basements. Prior to sale, each could be photographed and the list of the purchasers could be maintained on the computer. A purchaser could even be required to agree to return the piece if it should become needed for scientific purposes. 驳斥反对意见:放在博物馆里找不到。 It would be unrealistic to suggest that illegal digging would stop if artifacts were sold on the open market. But the demand for the clandestine product would be substantially reduced. Who would want an unmarked pot when another was available whose provenance was known, and that was dated stratigraphically by the professional archaeologist who excavated it? 补充说明:会大幅减少,不是消灭非法挖掘。
Ecoefficiency (measures to minimize environment impact through the reduction or elimination of waste from production processes) has become a goal for companies worldwide, with many realizing significant cost savings from such innovations. Peter Senge and Goran Carstedt see this development as laudable but suggest that simply adopting ecoefficiency innovations could actually worsen environmental stresses in the future.
仅仅是新思想对生态效能没有用~~
Such innovations reduce production waste but do not alter the number of products manufactured nor the waste generated from their use and discard; indeed, most companies invest in ecoefficiency improvements in order to increase profits and growth. 仅仅是减少了生产污染,并没有减少消费污染,利益驱使。
Moreover, there is no guarantee that increased economic growth from ecoefficiency will come in similarly ecoefficient ways, since in today’s global markets, greater profits may be turned into investment capital that could easily be reinvested in old-style eco-inefficient industries. Even a vastly more ecoefficient industrial system could, were it to grow much larger, generate more total waste and destroy more habitat and species than would a smaller, less ecoefficient economy. 在投资可能还投资旧的技术,而且公司越大绝对污染就越高。
Senge and Carstedt argue that to preserve the global environment and sustain economic growth, businesses must develop a new systemic approach that reduces total material use and total accumulated waste. Focusing exclusively on ecoeffi ciency, which offers a compelling business case according to established thinking, may distract companies from pursuing radically different products and business models.
Biologists have advanced two theories to explain why schooling of fish occurs in so many fish species. Because schooling is particularly widespread among species of small fish, both theories assume that schooling offers the advantage of some protection from predators. 两个理论--鱼类为什么集群 Proponents(支持者) of theory A dispute the assumption that a school of thousands of fish is highly visible. Experiments have shown t hat any fish can be seen, even in very clear water, only within a sphere of 200 meters in diameter. When fish are in a compact group, the spheres of visibility overlap. Thus the chance of a predator finding the school is only slightly greater than the chance of the predator finding a single fish swimming alone. Schooling is advantageous to the individual fish because a predator's chance of finding any particular fish swimming in the school is much smaller than its chance of finding at least one of the same group of fish if the fish were dispersed throughout an area. A的支持者:集群使个体相对来说不易被发现 However, critics of theory A point out that some fish form schools even in areas where predators are abundant and thus little possibility of escaping detection exists. They argue that the school continues to be of value to its members even after detection. They advocate theory B, the "confusion effect," which can be explained in two different ways. 反对者: 集群本身使目标明显,支持B:混淆视听 Sometimes, proponents argue, predators simply cannot decide which fish to attack. This indecision supposedly results from a predator's preference for striking prey that is distinct from the rest of the school in appearance. In many schools the fish are almost identical in appearance, making it difficult for a predator to select one. The second explanation for the "confusion effect" has to do with the sensory confusion caused by a large number of prey moving around the predator. Even if the predator
lo and Europa, the inner two of Jupiter's four largest moons, are about the size of Earth's moon and are composed mostly or entirely of rock and metal. Ganymede and Callisto are larger and roughly half ice. Thus, these four moons are somewhat analogous(相似的) to the planets of the solar system, in which the rock-and metal-rich inner planets are distinct from the much larger gas- and ice -rich outer planets. Jupiter's moons are, however, more "systematic": many of their properties vary continuously with distance from Jupiter. For example, lo is ice-free, Europa has a surface shell of ice, and while Ganymede and Callisto are both ice-rich, outermost Callisto has more. 木星四个卫星的两颗的地理特征
This compositional gradient has geological parallels, lo is extremely geologically active, Europa seems to be active on a more modest scale, and Ganymede has undergone bouts of activity in its geological past. Only Callisto reveals no geological activity. In similar fashion, Callisto's surface is very heavily cratered from the impact of comets and asteroids; Ganymede, like Earth's moon, is heavily cratered in parts; Europa is very lightly cratered; and no craters have been detected on lo, even though Jupiter's gravity attracts comets and asteroids passing near it, substantially increasing the bombardment rate of the inner moons compared to that of the outer ones. But because of lo's high degree of geological activity, its surface undergoes more-or-less continuous volcanic resurfacing.