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标题: LSAT-4-I, 3, 15,18 [打印本页]

作者: CasualWalk 时间: 2003-5-26 09:25
标题: LSAT-4-I, 3, 15,18
又摔跟头了。xdjm扶一把吧。多谢！

3. Mayor of Plainsville: In order to help the economy of Plainsville, I am using some of our tax revenues to help bring a major highway through the town and thereby attract new business to Plainsville. Citizens' group: You must have interests other than our economy in mind. If you were really interested in
helping our economy, you would instead allocate the revenues to building a new business park. Since it would bring in twice the business that your highway would.

The argument by the citizens; group relies on which one of the following assumptions?

(A) Plainsville presently has no major highways running through it.
(B) The mayor accepts that a new business park would bring in more new business than would the new highway.
(C) The new highway would have no benefits for Plainsville other than attracting new business.
(D) The mayor is required to get approval for all tax revenue allocation plans from the city council.
(E) Plainsville's economy will not be helped unless a new business park of the sort envisioned by the citizens' group is built.

这题好像见过，可是没找着。答案是B，C不是更好吗？不服。

15. M: It is almost impossible to find a person between the ages of 85 an 90 who primarily uses the left hand.
Q: Seventy to ninety years ago, however, children were published for using their left hands to eat or to write and were forced to use their right hands.

Q's response serves to counter any use by M of the evidence about 85 to 90 year olds in supports of which one of the following hypotheses?

(A) Being born right-handed confers a survival advantage.
(B) Societal attitudes toward handedness differ at different times.
(C) Forcing a person to switch from a preferred hand is harmless.
(D) Handedness is a product of both genetic predisposition and social pressures.
(E) Physical habits learned in school often persist in old age.

答案A，我选D。

18. Mary, a veterinary student, has been assigned an experiment in mammalian physiology that would require her to take a healthy, anesthetized dog and subject it to a drastic blood loss in order to observe the physiological consequences of shock. The dog would neither regain consciousness nor survive the experiment. Mary decides not to do this assignment.

Mary's decision most closely accords with which one of the following principles?

(A) All other things being equal, gratuitously causing any animal to suffer pain is unjustified.
(B) Taking the life of an animal is not justifiable unless doing so would immediately assist in saving several animal lives or in protecting the health of a person.
(C) The only sufficient justification for experimenting on animals is that future animal suffering is thereby prevented.
(D) Practicing veterinarians have a professional obligation to strive to prevent the unnecessary death of an animal except in cases of severely ill or injured animals whose prospects for recovery are dim.
(E) No one is ever justified in acting with the sole intention of causing the death of a living thing, be it animal or human.

答案B，请帮忙分析一下。

作者: mindfree 时间: 2003-5-27 01:17
1. I have seen this one before. Some said C is the answer and some said B. I would pick B. Other benefit is out of scope in this problem. The argument is based on ecomic factors and new businesses. Other benefits in choice C might include cultural and political ones.

B is correct in that if the Mayor used another approach to come down to a totally different projection that business park would attract fewer new businesses than would the highway, his decision to build the highways is then fully justufied. the answer can also be like "There is reason to believe that a business park will indeed attract twice as many new busnesses as will the highway". In another word, if the Citizen's group's projection is wrong, the argument is flawed.

2. You misunderstood the question. It asks what M's argument is. D is the opinion and argument of Q's. A is M's argument.

3. let me think..

作者: CasualWalk 时间: 2003-5-27 04:53
Thanks a lot, mindfree!

1) I think you are right: The key issue here is what the citizen group's conclusion is. The conclusion is that the mayer has something else in his mind. Like you said, if B fails, then the conclusion falls apart. But C, is only a strengthen to citizen's conclusion.

2) 一语惊醒梦中人！惭愧惭愧。。

作者: gsluo 时间: 2003-7-16 14:46
Causal Walk,
no.3 (c) is talking about "benifits and attracting business" which are not the point of the conclusion,right? So (c) is out of the topic. Hope i express myself clearly.

作者: tocean0222 时间: 2003-7-16 21:33

以下是引用gsluo在2003-7-16 14:46:00的发言：
Causal Walk,
no.3 (c) is talking about "benifits and attracting business" which are not the point of the conclusion,right? So (c) is out of the topic. Hope i express myself clearly.

gsluo,

hehe,Causalwalk already cracked gmat recently with a score 7**.

作者: gsluo 时间: 2003-7-17 11:01
superman! congratulations,causual walk! Hope everybody here can get a good score as Causual did!

作者: kid 时间: 2004-1-18 22:07
wot about NO18?
i come here to hear the explaination,but seems no one discussed it

作者: 哈佛情人 时间: 2006-6-27 01:41

唉!看了Mindfree的解释第3题的B选项我怎么还是觉得不舒服啊

哪位高人再来指点一下～～～痛苦中...

作者: sunshinerab 时间: 2006-6-27 02:05
3.同意B
题目问Citizen group的争论relies on什么assumption,那么这个假设一定是使C的争论成立的必要条件。什么是这个必要条件呢？那就是C认为M本人是认可business part比highway更能带来经济利益。这样C后面的争论才会成立。
C选项范围偏。

作者: sunshinerab 时间: 2006-6-27 02:15
再补充一下。Citizen Group的结论只有一句话："you must have interests other than our economy in mind."后面的if...you would...只是一个C结论的条件。

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