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[求助]急!~~~~~~~OG 12TH 几道题目~大家帮帮忙

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楼主
发表于 2009-10-31 19:46:00 | 只看该作者

[求助]急!~~~~~~~OG 12TH 几道题目~大家帮帮忙

45.  Some anthropologists study modern-day societies of foragers in an effort to learn about our ancient
ancestors who were also foragers. A flaw in this strategy is that forager societies are extremely varied.
Indeed, any forager society with which anthropologists are familiar has had considerable contact with
modern, non-forager societies.
Which of the following, if true, would most weaken the criticism made above of the anthropologists' strategy?
(A) All forager societies throughout history have had a number of important features in common that are absent from other types of societies.
(B) Most ancient forager societies either dissolved or made a transition to another way of life.
(C) All anthropologists study one kind or another of modern-day society.
(D) Many anthropologists who study modern-day forager societies do not draw inferences about ancient societies on the basis of their studies.
(E) Even those modern-day forager societies that have not had significant contact with modern societies are importantly different from ancient forager societies.

关于C选项,有一点点小疑问,这个选项说的是所有的学者都研究一种类型的MD社会,那么能不能判断这个选项为,显示因果的资料不正确?(或者是不具有代表性?)
另外,这个题目的名词好多,。有modern-day forager society ,modern non-forager society 和forager society,有点晕,想请NN帮帮忙,帮我写一下推理链,我怎么都理不出头绪、、、


51.   One variety of partially biodegradable plastic beverage container is manufactured from small bits of plastic
bound together by a degradable bonding agent such as cornstarch. Since only the bonding agent degrades,
leaving the small bits of plastic, no less plastic refuse per container is produced when such containers are
discarded than when comparable nonbiodegradable containers are discarded.
Which of the following, if true, most strengthens the argument above?
(A) Both partially biodegradable and nonbiodegradable plastic beverage containers can be crushed
completely flat by refuse compactors.
(B) The partially biodegradable plastic beverage containers are made with more plastic than comparable
nonbiodegradable ones in order to compensate for the weakening effect of the bonding agents.
(C) Many consumers are ecology-minded and prefer to buy a product sold in the partially biodegradable
plastic beverage containers rather than in nonbiodegradable containers, even if the price is higher.
(D) The manufacturing process for the partially biodegradable plastic beverage containers results in less
plastic waste than the manufacturing process for nonbiodegradable plastic beverage containers.
(E) Technological problems with recycling currently prevent the reuse as food or beverage containers of the
plastic from either type of plastic beverage container.

正确答案是B。这个题目好无奈啊,完全没有看懂题目是什么意思,没有看懂它的表述,如果可以,谁能帮帮我,告诉我它大概表述了什么意思?。。。
B是正确答案,至于这个推理,更加是晕,请NN帮忙解释一下了~~拜托了


59.  In order to withstand tidal currents, juvenile horseshoe crabs frequently burrow in the sand. Such burrowing
discourages barnacles from clinging to their shells. When fully grown, however, the crabs can readily withstand tidal currents without burrowing, and thus they acquire substantial populations of barnacles. Surprisingly, in areas where tidal currents are very weak, juvenile horseshoe crabs are found not to have significant barnacle  populations, even though they seldom burrow.
Which of the following, if true, most helps to explain the surprising finding?
(A) Tidal currents do not themselves dislodge barnacles from the shells of horseshoe crabs.
(B) Barnacles most readily attach themselves to horseshoe crabs in areas where tidal currents are weakest.
(C) The strength of the tidal currents in a given location varies widely over the course of a day.
(D) A very large barnacle population can significantly decrease the ability of a horseshoe crab to find food.
(E) Until they are fully grown, horseshoe crabs shed their shells and grow new ones several times a year.

正确答案是E.这个题目基本上都看懂了,就是对于junvenile和fully grown有点疑惑,因为我觉得这是两个不同的概念,而貌似OG的解释中把他们当做同一个概念了,文章最后一句话说:juvenile horseshoe crabs are found not to have significant barnacle  populations, even though they seldom burrow.而正确选项说Until they are fully grown, horseshoe crabs shed their shells and grow new ones several times a year。 这是不是指这是两个相同的概念?还是有别的理解方式?


[此贴子已经被作者于2009/10/31 19:46:33编辑过]
沙发
发表于 2009-10-31 20:31:00 | 只看该作者

45.题干说现代的人类学家根据现代的游牧社会来研究我们古代祖先的游牧社会。这个方法缺陷是游牧社会变化非常大。实际上,所有人类学家熟悉的现代游牧社会都跟现代非游牧社会有很大接触。

 

题目要找削弱上述论断的。

 

答案A。所有游牧社会从古至今都有很多共同重要的特征,是其他类型社会没有的。

C.所有人类学家都研究某种现代社会。这个论述不能直接削弱,力量太薄弱了。

 

51.一种部分降解塑料饮料瓶是由塑料和可降解的粘合剂制造的。因为只有粘合剂能降解,而塑料本身如同不可降解塑料瓶一样不能降解,所以单位数量下,可降解塑料瓶并不比不可降解塑料瓶产生更少的塑料垃圾。

 

题目找加强论述的。

B. 不可降解塑料瓶为了弥补可降解粘合剂强度不够的问题,要使用更多的不可降解塑料来制作。

 

59. 讨论的都是蟹子。这个没什么好说的,你想太多了。题干的意思是那个barnacles多少跟蟹子打洞多少成反比,跟蟹子年龄无关。所以,当蟹子不打洞,而身上的BARNACLE还不多的时候,作者surprise了。E选项的意思是,观察者正好在蟹子换壳的时候去数那些barnacle,所以才误会了。

板凳
 楼主| 发表于 2009-10-31 20:55:00 | 只看该作者
以下是引用ARCHER420在2009/10/31 20:31:00的发言:

45.题干说现代的人类学家根据现代的游牧社会来研究我们古代祖先的游牧社会。这个方法缺陷是游牧社会变化非常大。实际上,所有人类学家熟悉的现代游牧社会都跟现代非游牧社会有很大接触。

题目要找削弱上述论断的。

答案A。所有游牧社会从古至今都有很多共同重要的特征,是其他类型社会没有的。

C.所有人类学家都研究某种现代社会。这个论述不能直接削弱,力量太薄弱了。

谢谢回答啊,很好的,我差不多都看明白了、、、

但是还有一个地方。。。。。就是我还是觉得这个C选项可以当做资料没有代表性,因为他们只研究了一种社会呀。。。、

PS.你的理解能力很强呀。。。。想请问一下,平时做题的时候要是题目都看不太明白怎么办?有的时候非得一句一句译成中文很费力、、、

地板
发表于 2009-10-31 21:05:00 | 只看该作者

回楼主

什么代不代表性的肯定是某些培训机构或者个人分类出来的概念,我这个人自己归纳能力比较差,也记不住那些规律。我认为最好的招数就是无招,相机而动吧。GMAT也不是让你都弄明白的,他们就是要你在时间紧迫的压力下,完成Mission impossible。这是商业活动中常有的情况啊。

题目都看不明白,你只能蒙了。直接从选择项里面挑呗。我个人的体会,看不懂题目,心里选择了也没底,错误率实际上也蛮高的。我实际上都在理解了题目的前提下才选择。不过我是用英语来思维,不是在脑子里翻译汉语,还有你要熟悉了英文语法结构,可以提纲挈领,把那些不重要的信息筛除后再做题。

5#
 楼主| 发表于 2009-10-31 21:15:00 | 只看该作者

呵呵,恩

那个上XDF的课的时候,老师总结的,可能我没理解正确吧,回头再认真看看笔记吧

谢谢啦

这几天我都会集中发帖,还希望多多帮助,我刚刚把OG的问题总结完,所以希望知道的朋友能多多帮助一下了,谢谢啦~~~

6#
发表于 2009-10-31 21:27:00 | 只看该作者
以下是引用水色青空在2009/10/31 21:15:00的发言:

呵呵,恩

那个上XDF的课的时候,老师总结的,可能我没理解正确吧,回头再认真看看笔记吧

谢谢啦

这几天我都会集中发帖,还希望多多帮助,我刚刚把OG的问题总结完,所以希望知道的朋友能多多帮助一下了,谢谢啦~~~

好的,我正好没时间总结呢。你发现的问题都拿来讨论,我不知道怎么订阅你的发帖。你可以发我信箱,wong.chengyu(在) gmail.com

这些天都没空做题,抽时间在CD找别人的问题做。。。。苦啊 每天困死了 事情太多了!!!!!!!!!!!

7#
 楼主| 发表于 2009-10-31 21:32:00 | 只看该作者

恩,好的

我发了帖子告诉你一声吧,发在论坛上方便看大家的讨论是吧?呵呵

不过我就是觉得我的问题都比较弱。。。。,没办法,逻辑就是很让我头疼的事情

最近在狂做题,看题,所以问题比较多啦,呵呵,你就准备接招呗

8#
 楼主| 发表于 2009-11-10 21:04:32 | 只看该作者
HI...我最近开始集中发帖了,不好意思,上个星期就准备发的,结果由于自己没做完就耽误了,我把帖子发到你邮箱了,如果有时间久回复吧,谢谢了,我的逻辑很弱,希望不要见笑

大家都是为G奋斗的,一起努力吧!~

ps.我是在校生,你呢?
9#
 楼主| 发表于 2009-11-10 21:05:28 | 只看该作者
HI...我最近开始集中发帖了,不好意思,上个星期就准备发的,结果由于自己没做完就耽误了,我把帖子发到你邮箱了,如果有时间久回复吧,谢谢了,我的逻辑很弱,希望不要见笑

大家都是为G奋斗的,一起努力吧!~

ps.我是在校生,你呢?
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