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大全test B-19

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楼主
发表于 2012-8-24 15:30:49 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
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 ofthe rich go uncounted as well, because they are often abroad or travelingbetween one residence and another.
Which of the following is an assumption on which theargument above depends?
(A) Both the rich and the poor have personaland economic reasons to avoid being counted by the census.
(B) AllAmericans may reasonably be classified as either poor or rich.
(C) Thepercentage of poor Americans uncounted by the census is close to the percentageof rich Americans uncounted.
(D) Thenumber of homeless Americans is approximately equal to the number of richAmericans.C
(E) The primary purpose of the census is toanalyze the economic status of the American population.
答案选C,这个题我完全不懂。。。求指导~~~
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沙发
 楼主| 发表于 2012-8-30 21:48:12 | 只看该作者
怎么没有人帮忙啊。。。。求助!
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