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大全-B-19 完全的没有思路 谢谢大家

大全-B-19.    The U.S. census is not perfect: thousands of Americans probably go uncounted. However, the basic statistical portrait of the nation painted by the census is accurate. Certainly some of the poor go uncounted, particularly the homeless; but some of the rich go uncounted as well, because they are often abroad or traveling between one residence and another.

Which of the following is an assumption on which the argument above depends?

(A) Both the rich and the poor have personal and economic reasons to avoid being counted by the census.

(B) All Americans may reasonably be classified as either poor or rich.

(C) The percentage of poor Americans uncounted by the census is close to the percentage of rich Americans uncounted.

(D) The number of homeless Americans is approximately equal to the number of rich Americans.C

(E) The primary purpose of the census is to analyze the economic status of the American population.


答案C, 谁能简单说说E 呢

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C是相对较好的答案

穷vs富(全部都是uncounted部分)抵消使得数字accuate

E是调查的目的不是推理中的gap
 

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C是相对较好的答案

穷vs富(全部都是uncounted部分)抵消使得数字accuate

E是调查的目的不是推理中的gap

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事实是:漏数部分富人和部分穷人

结论是:人口普查是精确的

要在这两者间架桥:错误的调查怎能得出正确的结论呢?C的意思是漏数的部分正

好互相抵消,所以人口普查准确。

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事实是:漏数部分富人和部分穷人

结论是:人口普查是精确的

要在这两者间架桥:错误的调查怎能得出正确的结论呢?C的意思是漏数的部分正好互相抵消,所以人口普查准确。

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文章的结论是:美国的人口普查是精确的。论据是:同时漏数部分富人和穷人

要在这两者之间架桥,答案C当然比答案E更好。

我做assumption的题目,一般是先架桥,不行再取非。

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