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我按照木木的Nightingale文章分析方法，分析OG12的RC16文章--------跪求NN和前辈们指点哪里做的不好，还有解答疑问！
我如何做的：
文章套路：根据题干带下划线的信息得出
定位句:根据题干带颜色的信息得出
正确选项:正确选项和定位句的同意替换用相同颜色标出
错误选项：无：无关
反：与问题的答案相反
杂：含有不准确或部分原文内容，比如修饰、大小规模、时间界限与原文不符
张冠李戴：是原文内容，但是不是该题答案
请教问题:
1．我写的逻辑简图哪里不好？该如何改善？
2．读完一遍文章，很难立即写出逻辑简图，经常需要回看，进行内容补充。这种问题该如何改进？
3．阅读速度慢，可否通过以下方法来解决？只用OG12是不是就够了？
首先，用“木木法”分析一遍OG12所有RC。然后，按照“小安法”分析总结OG 12RC。
4．该如何剖析原文？是不是注意这几点啊： a 分析文章套路(新老观点、结论解释等)
b 分析段落、句子作用及其间关系
c 连词、主题词首字母替代、感情色彩词
我目前状态：目标分数720.打算5月初考G！
词汇量还可以背过T和G的词汇，也熟背过杨鹏长难句（半年前）。托福阅读：28
放慢速度读文章（2分10行）和做题（3分一题），OG RC正确率80%-90%。但是一卡时间（1分10行，1分1题）完蛋了，草草读
完，答题时回去定位经常都找不到位置，经常错一半！
LineIt was once 老观点 believed that the brain was Independent关键词 of metabolic processes occurring elsewhere in the body. In recent新观studies, however转折, we have discovered that the production and release (5) in brain neurons of the neurotransmitter serotonin (neurotransmitters arecompounds that neurons use to transmit signals to other cells) depend directly on（关键词与once观点形成对比） the food that the body processes.
老观点 believed that the brain was Independent关键词 of metabolic processes occurring elsewhere in the body. In recent新观studies, however转折, we have discovered that the production and release (5) in brain neurons of the neurotransmitter serotonin (neurotransmitters arecompounds that neurons use to transmit signals to other cells) depend directly on（关键词与once观点形成对比） the food that the body processes.
Our first实验一studies sought to determine whether (10) the increase in serotonin关键词observed in rats given a large injection of the amino acid tryptophan might also occur after rats ate meals that change tryptophan关键词levels in the blood. We found that结论, immediately after the rats began to eat, parallel (15) elevations occurred in blood tryptophan, brain tryptophan, and brain serotonin levels. These findings suggested进一步确定，可略读 that the production and release of serotonin in brain neurons were normally coupled with blood-tryptophan increases. In later实验二studies we (20) found that injectinginsulin关键词into a rat’s bloodstream also代表方向没变 caused parallel elevations in blood and brain tryptophan关键词levels and in serotonin关键词levels. We then递进下一步decided to see whether the secretion of the animal’s own insulin关键词similarly方向 affected serotonin production. (25) We gave the rats a carbohydrate-containing关键词meal that we knew would elicit insulin secretion. As we had hypothesized,递进代表方向，后略读the blood tryptophan level and the concentrations of tryptophan and of serotonin关键词in the brain increased结论状态 after the meal.
(30) Surprisingly, however,转折，将提出另外观点when we added a large amount of protein关键词to the meal, brain tryptophan and serotonin levels fell.关键词 Since protein contains tryptophan, why should it depress brain tryptophan levels?问题 The answer解答lies in the mechanism that (35）provides blood tryptophan to the brain cells. This same mechanism also解答的继续provides the brain cells with other amino acids found in protein, such as举例首字母提炼 tyrosine and leucine. The consumption of protein increases blood concentration of the other amino acids much (40) more, proportionately, than it does that of tryptophan. 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. (45) Thus结论the more protein in a meal, the less serotonin subsequently produced and released.
逻辑简图：
Once：brain independent metabolic
Recent: brain depend on
First study: t+>s+(t: tryptophan，s secretion
i +> t+, s +(i:insulin)
however,p+> t-, s-due to t/other amino acid -(p：protein，t与其他氨基酸的比例降低)
Questions 82–90 refer to the passage above.
82. Which of the following titles best summarizes the contents of the passage?
(A) Neurotransmitters: Their Crucial Function in Cellular Communication无
(B) Diet and Survival无: An Old无 Relationship Reexamined无
(C) The Blood Supply杂and the Brain: AReciprocal无Dependence
(D) Amino Acids杂（原文讨论的还有insulin）and Neurotransmitters: The Connection between Serotonin Levels and Tyrosine
(E) live;">The Effects of Food Intakelive;"> onthe Production and Release of Serotonin: Some Recent Findings
main idea：
定位句，新观点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) live;">depend directly on the food that the body processes.
83. According to the passage, the speed with which tryptophan islive;">provided to the brain cells of a ratvarieswith the
(A) amount of protein present in a meal
(B) concentration of serotonin（杂，原文没有提s对t supply的影响）in the brain before a meal
(C) concentration of leucine in the blood rather than with the concentration of tyrosine in the blood after a meal杂，l和tyrosine之间性质同类，错误比较
(D) concentration of tryptophan in the brain before a meal杂，提了t 饭前后对s的影响，没有提及t饭后和饭后的关系
(E) number of serotonin-containing neurons 杂，同B
supporting idea：
定位句：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 live;">provided to the brain.
84. According to the passage, when the authors began their first studies, they were aware that
本题题干迷惑性强：began first study， were aware 意识着已经意识到。而非after the first study意识到了什么
(A) they would eventually need to design experiments that involved feeding rats high concentrations of protein（张冠李戴，protein是第三段的内容，而非first study）
(B) tryptophan levels 无in the blood were difficult to monitor with accuracy
(C) serotonin levels increased after rats were fed meals rich in tryptophan 张冠李戴，此答案针对after the fist study 提出
(D) there were many neurotransmitters whose production was dependent on metabolic processes elsewhere in the body 张冠李戴，此答案是文章主题，文章将要论证的。
OG EXPLANATION:文章只论证one neurotransmitter，而非many
(E) serotonin levels increased after rats were live;">injected with a large amount of tryptophan
supporting idea：
定位句：Our first studies sought to determine whether the increase in serotonin observed in rats given live;">a large injection of the amino acid tryptophan live;">此前：为live;">began the studylive;">，后：study得结论mightalso occur after rats ate meals that change tryptophan levels in the blood.
85. According to the passage, one reason that the authors gave rats carbohydrates was to
(A) Depress反the rats’ tryptophan levels
(B) prevent the rats from contracting diseases无
(C) causethe ratsto produceinsulin
(D) demonstrate that insulin is the most important无substance secreted by the body
(E) Compare无关比较the effect of carbohydrates with the effect of proteins
supporting idea
定位句：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 wouldelicit insulin secretion.
86. According to the passage, the more protein a rat consumes, the lower will be the
(A) ratio of the rat’s blood-tryptophan concentration to the amount of serotonin produced杂and released in the rat’s brain
(B) ratio of the rat’s blood-tryptophan concentrationto the concentration in its blood of the other amino acids contained in the protein
(C) ratio of the rat’s blood-tyrosine concentration to its blood-leucine无concentration
(D) number of neurotransmitters 杂of any kind that the rat will produce and release
(E) number of amino acids杂，而且应该是增加the rat’s blood will contain
supporting idea
定位句：The more protein is in a meal,the lower is the ratio of the resulting blood-tryptophan concentrationto the concentration of competing amino acids,
87. The authors’ discussion of the “mechanism that provides blood tryptophan to the brain cells” (lines 34–35) is meant to
(A) stimulatefurther（无，文章只是为了answer question，而非进一步讨论）research studies
(B) Summarize没有explain why好 an area of scientific investigation
OG EXPLANATION: summarize several investigation，但是没有 an entire area
(C) help explain why a particular research finding was obtained
(D) provide supporting evidence for a controversial无scientific theory
OG EXPLANATION: no theory is advanced, nor is any evidence about is provided.
(E) Refute（无，应该是explain why， to answer the question）the conclusions of a previously mentioned research study
logical structure
举例的作用，是为了证明论点。Answer是为了explan why
Surprisingly
定位句：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.The answer lies in the mechanism that provides blood tryptophan to the brain cells.
88. According to the passage, an injection of insulin was most similar in its effect on rats to an injection of
(A) tyrosine 反(B) leucine 反(C) blood 无(D) tryptophan 同(E) protein 反
supporting idea
89. 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?
(A) Meals consisting almost exclusively of protein
(B) Meals consisting almost exclusively of carbohydrates反
(C) Meals that would elicit insulin secretion 反
(D) Meals that had very low concentrations of tyrosine 反
(E) Meals that had very low concentrations of leucine反
inference
90. It can be inferred from the passage that the authors initially held which of the following hypotheses about
what would happen when they fed large amounts of protein to rats?
(A) The rats’ brain serotonin levels would not decrease.
(B) The rats’ brain tryptophan levels would decrease.反
(C) The rats’ tyrosine levels would increase less无quickly than would their leucine levels.
(D) The rats would produce more insulin张冠李戴.
(E) The rats would produce neurotransmitters other than无serotonin.
inference
定位句：Surprisingly, however, when we added a large amount of protein to the meal, brain tryptophan and serotonin levels fell
盼NN指点答疑 |
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发表于 2011-2-28 20:00:45
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发表于 2011-3-3 21:43:58
