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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.
A.今年没捐款的大部分是以前捐过款的人
——没捐款的构成不能说明捐款的构成，如果没捐款和捐款的大部分都是老人呢？
B，1.捐款少，不努力——加强×
2.说的是钱数，和题中的评价标准新人人数无关
3.这里也可以看做另一个gap（钱数也可以是募捐者好坏的评价标准）
C.今年人均钱数＞其他学校
1.如果只把新人人数当评价标准——钱数，无关
2.就算把钱数也当作评价标准
（1）相对值与绝对值：比其他学校高，不代表自己就是高的，可能其他学校很低，自己只是没那么低
（2）可能老人捐的多，新人捐的少，从钱数看挺努力的，但是因为是人均钱数，所以从人数看，老人多新人少，其实是不努力的。
D.拿到新的名字，是否联系了这些新人不知道，无关
E,大部分钱来自于新人，那肯定联系不少新人吧，证明是好募捐者啊，非常直接的削弱结论了
说明联系了新人，不是只联系了老人，削弱了假设
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