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题库 / Prep2012-CR-69
Southington University's fund-raisers succeeded in getting donations from 80 percent of the potential donors they contacted this year. This rate would be the expected rate if the only potential donors contacted were those who have donated in the past. But good fund-raisers constantly contact less likely prospects in an effort to expand the donor base. Thus the high success rate, far from showing that the fund-raisers did a good job, shows insufficient canvassing effort.
Which of the following, if true, most seriously weakens the argument?
Among potential donors contacted by Southington University's fund-raisers, the majority of those who did not make donations were people who had made donations to the university in the past.
The amount of money raised by Southington University's fundraisers this year was lower than the amount they had raised in any of the previous several years.
Individual donations made to Southington University this year were, on average, slightly larger than were average individual donations made to many other universities.
Fund-raisers contacting past donors are not only to get new donations but also to get names of potential new donors to contact.
The majority of the donations that fund-raisers succeeded in getting for Southington University were from donors who had never given to the university before.
第二次看这道题才发现之前理解错了，论证是因为好的raiser应该联系很少有可能性捐款（而不是过去已经捐款的人）以扩大捐款寄出。所以S 大学的raiser得到80%的捐款不能说明他的工作出色。该文段的assumption其实是 S大学的raiser得到的80%的捐款都是过去已经捐款的人。而E选项大部分捐款的都是过去从未捐款的人恰恰削弱了assumption。和论证的前提吻合。
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