大全A19一个以前没有的问题，不知有没有人和我想法一样

dreamyhoney

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? B (C)

(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.

 

我认为B正确，因为只有美国人被分为穷富两类时，这两类人同时减少才会使the basic statistical portrait of the nation painted by the census is accurate。如果还有不穷不富的人，是不是就不合理了呢？

不知大家明不明白我的意思？欢迎给点意见。先谢谢各位了！！

mbz

was discussed yesterday:

http://forum.chasedream.com/dispbbs.asp?boardID=24&ID=184959&page=1

dreamyhoney

我看了很多解释C为什么对的帖子了。

但是感觉C有漏洞。如果还有一大部分人不包含在穷人和富人中，但这部分的人没有被漏记，那末这三部分人不是依旧不成比例吗?

mbz

以下是引用dreamyhoney在2006-8-2 22:38:00的发言：

我看了很多解释C为什么对的帖子了。

但是感觉C有漏洞。如果还有一大部分人不包含在穷人和富人中，但这部分的人没有被漏记，那末这三部分人不是依旧不成比例吗?

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

you need to add some many more conditions in order to make B stand.

Further more, the focus of this argument is the rich and poor, which is mentioned through the whole context, but not people of the middle class.