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陈向东的逻辑专项

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楼主
发表于 2012-7-7 14:28:12 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
The Wheat Farmers Alliance, a political action committee, attracts 70 percent of its contributors from an advertisement requesting contributions placed only in the September, October, and November issues of the Grange Report, a monthly newsletter for wheat farmers. The president of the Wheat Farmers Alliance, to increase the number of contributors, decides to advertise in each of the monthly issues of the Grange Report. She expects that, as a result of the additional Grange Report advertisement, the number of contributors will be increased to at least double the present number.
Which of the following, if true, would most strongly support the presicent's expectation? A
(A) The September, October, and November adveritsements were noticed by fewer than one-third of those readers of the Grange Report who would be willing to contribute to the Whear Farmers Alliance.
(B) Wheat farmers traditionally repay their bank loans in late summer after the winter wheat crop has been harvested and sold.
(C) The majority of the readers of the Grange Report with a great enough interest in the Wheat Farmers Alliance to contribute have already responded to the advertisements.
(D) Most of those who contribute to the Wheat Farmers Alliance in the course of a year do so in response to advertisement in the Grange Report.
(E) The total number of readers of the Grange Report is stable from year to year.
这题为什么不能选E呢?
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沙发
发表于 2012-7-14 14:51:00 | 只看该作者
本体结论是:如果每月都做广告,the number of contributors will be increased to at least double the present number
问题说 would most strongly support……只有A选项明确说了,还有三分之二的感兴趣的读者没能看到9-11月份的广告,所以The Wheat Farmers Alliance将在每个月都发广告的举动会吸引剩下的感兴趣的三分之二的读者。直接加强了结论。

而E说读者的数量稳定,并不能保证结论一定会成立。
板凳
 楼主| 发表于 2012-7-16 13:48:29 | 只看该作者
恩,谢谢~
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