ChaseDream
搜索
返回列表 发新帖
楼主: joe11
打印 上一主题 下一主题

再战日志

[精华] [复制链接]
151#
 楼主| 发表于 2004-11-4 21:41:00 | 只看该作者

做了一个section 的 LSAT,问题多多。又错了8个。郁闷

Test 1, Section IV.

8. Dr. Sheila Porter plans to run an experiment using nursing students. Each student will be shown either a pleasant nature film or a disturbing horror film. Each student will be observed by someone who—looking only at the student’s facial expressions—must ascertain which film is being shown. Students shown the horror movie are told to hide their feelings in order to convince the observer that they are watching a pleasant film. Dr. Porter hypothesizes that all the students in the experiment who are convincing will be among the best at working with patients. The hypothesis will be tested by comparing the convincing students and unconvincing students in terms of their performance with patents.

Which one of the following incidents best illustrates Dr. Porter’s hypothesis?

(A) Niles, the most convincing student in the experiment, later went on to become a physician.

(B) After graduating, Yoshiro, a nursing student who was convincing in the experiment, helped care for Bram, a patient at a hospital. Bram recovered from his operation.

(C) After graduating, Kim, a nursing student in the experiment who watched the nature film, was removed from the staff of a hospital for unacceptable performance in patient care.

(D) Daria, a nursing student who was convincing in the experiment, later received “A’s” in those classes in which working with patients in a teaching hospital was the sole basis of her grades.D

(E) Marite, a nursing student who was not convincing in the experiment, later quit nursing school.

B 咋不对呢?怎么我的逻辑不能上升到理论高度?

麻烦你讲时能把复杂问题简单化,三下五除二我就晕了。   多谢多谢。

152#
发表于 2004-11-5 10:47:00 | 只看该作者

这道题算是LSAT中比较难的一道题,我们首先看原文的表述:

Students shown the horror movie are told to hide their feelings in order to convince the observer that they are watching a pleasant film-hypothesizes that all the students in the experiment who are convincing will be among the best at working with patients-The hypothesis will be tested by comparing the convincing students and unconvincing students in terms of their performance with patents

问题就是问support 原文的hypothesis。其实就是找一个选项证明convincing students的performance with patents好

B不能说明convincing students的performance好,只说了一个病人恢复了,这个不足以说明performance with patents好。

D说的很明显convincing students的performance是A,并且指出working with patients是唯一的评分依据。完美的体现了原文convincing students与performance with patents的关系。

这道题大部分是在考阅读,要证明的推理关系只有一个在hypothesis中,all the students in the experiment who are convincing -be among the best at working with patients,要找的答案就是证明这一推理关系即可。

153#
 楼主| 发表于 2004-11-5 21:54:00 | 只看该作者

Thanks, Leeon.


D 用的是 patientS, 而 B 用的是一个 patient, 所以 D 比 B 更具说服力。


(革命还没成功,郁闷)


[此贴子已经被作者于2004-11-5 21:54:23编辑过]
154#
发表于 2004-11-5 22:29:00 | 只看该作者

Just came here. My 2 cents:


I totally agree with Leeon on this question. Joe11 has a point but this point is not vital to determine D is a better answer than B.


By the way, 8 errors in 1 section is not bad at all. My average was 7 errors in 50 minutes.

155#
发表于 2004-11-6 22:20:00 | 只看该作者

Joe11,不要太介意LSAT的正确率,Valarie大牛的正确率也和你差不多,很多时候我觉得LSAT逻辑比GMAT简单,读完之后答案很清楚,从来不会像GMAT感觉有些答案非常的不确定,LSAT大部分是在考阅读。我想只要你多练习几个section,正确率就上来了,关键是把题干搞懂。

我做完了XDF 30篇阅读,正确率在70%左右,低于OG的阅读部分,我计划在接下来的两周里将80篇GMAT文章总结两遍。希望能将RC的正确率提上去。SC和CR已经没有什么提升的空间了。大家+U.

156#
 楼主| 发表于 2004-11-7 02:15:00 | 只看该作者

"很多时候我觉得LSAT逻辑比GMAT简单,"

是不是已经到了高手无招的境界了!仰慕+仰视+ ...

我好久没做阅读了,想得慌。

终于有大大NN 在旁边,爽得一塌糊涂,趁着东风赶快开船喽。先把感谢大旗扯起来。

157#
发表于 2004-11-7 11:00:00 | 只看该作者

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 (serotonin: n.含于血液中的复合胺) (neurotransmitters are compounds that neurons use to transmit signals to other cells) depend directly on the food that the body processes.

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 serotonin in the brain increased after the meal.

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 tryptophan. The more protein in the 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.

3.     According to the passage, when the authors began their first studies, they were aware that

(A) they would eventually need to design experiments that involved feeding rats high concentrations of protein

(B) tryptophan levels in the blood were difficult to monitor with accuracy

(C) serotonin levels increased after rats were fed meals rich in tryptophan

(D) there were many neurotransmitters whose production was dependent on metabolic processes elsewhere in the bodyE

(E) serotonin levels increased after rats were injected with a large amount of tryptophan

大家帮忙看看这道题,答案是E,C错在什么地方?

158#
 楼主| 发表于 2004-11-7 13:16:00 | 只看该作者

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.

(C) serotonin levels increased after rats were fed meals rich in tryptophan

You see the difference?   

159#
发表于 2004-11-8 08:47:00 | 只看该作者
你说的有点道理,C后面的部分在原文中没有相应的支持信息
160#
 楼主| 发表于 2004-11-9 12:50:00 | 只看该作者

I just realized how difficult those passages are. (GMAT 64-117)

Freaking long and a lot of new words. Need to pump up with RC.

Still working on reEngineering FF Logic. Here are some valuable questions: 16, 43,

您需要登录后才可以回帖 登录 | 立即注册

Mark一下! 看一下! 顶楼主! 感谢分享! 快速回复:

手机版|ChaseDream|GMT+8, 2025-7-24 21:56
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号

ChaseDream 论坛

© 2003-2025 ChaseDream.com. All Rights Reserved.

返回顶部