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LSAT-11-1-25

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楼主
发表于 2004-12-21 03:05:00 | 只看该作者

LSAT-11-1-25

25. Large inequalities in wealth always threaten the viability of true democracy, since wealth is the basis of political power, and true democracy depends on the equal distribution of political power among all citizens.


The reasoning in which one of the following arguments most closely parallels the reasoning in the argument above?


(A) Consumer culture and an emphasis on technological innovation are a dangerous combination, since together they are uncontrollable and lead to irrational excess.


(B) If Sara went to the bookstore every time her pocket was full, Sara would never have enough money to cover her living expenses, since books are her love and they are getting very expensive.


(C) It is very difficult to write a successful science fiction novel that is set in the past, since historical fiction depends on historical accuracy, whereas science fiction does not.


(D) Honesty is important in maintaining friendships. But sometimes honesty can lead to arguments, so it is difficult to predict the effect a particular honesty act will have on a friendship.


(E) Repeated encroachments on one’s leisure time by a demanding job interfere with the requirements of good health. The reason is that good health depends on regular moderate exercise, but adequate leisure time is essential to regular exercise.


答案:E


选是选对了,但我找不到充足的理由说服自己选E,NN,帮忙分析一下。

沙发
发表于 2004-12-21 09:53:00 | 只看该作者

原文推理:true democracy-------->the equal distribution of political power。Large inequalities in wealth 导致Large inequalities distribution of political power----->Not true democract(即threaten the viability of true democracy)

该推理本质是是通过true democracy depends on the equal distribution of political power among all citizens的逆否命题来实现推理的。原文除E用到逆否命题作为推理的基础

板凳
 楼主| 发表于 2004-12-21 16:22:00 | 只看该作者

明白了,原文的前提和结论其实可以看作原命题和逆否命题,本来就是成立的,只是中间通过“since wealth is the basis of political power”来替换成political power;而E,也一样,是用“adequate leisure time is essential to regular exercise”来替换,其实basis和essential从友好词汇上都能看出来:)

我理解的对吗?

地板
发表于 2004-12-21 18:00:00 | 只看该作者

对,所以其实该题很容易排除其它选项。因为只有E有充分必要关系。B也有,但出现在结论中,而原文是出现在前提中

5#
发表于 2019-8-13 17:19:47 | 只看该作者
hades 发表于 2004-12-21 03:05
25. Large inequalities in wealth always threaten the viability of true democracy, since wealth is th ...

Spot the question type: Method of the reasoning - parallel reasoning

P1: Political power ---> Wealth

P2: Democracy ---> equal distribution of political power => No equal distribution of political power ---> No democracy.

C: If large inequalities in wealth ---> threaten viability of true democracy

Large inequalities in wealth ---> No equal distribution of political power ---> No democracy

A. A + B ---> C, since A+ B ---> X + Y

B. If A ---> B, A ---> No C, since B ---> X + Y

C. A of B is better than A of C, since A ----> X, F ---> No X

D. A ---> B, but A some C, So If predict the effect A on B, it must be difficult.

E. If repeat A ---> demanding B ---> lessen C, since  C ---> D,  but D ---> No A
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