[求助]陈向东Assumption一题

willsum

Although the ratio of physicians to total population is about the same in the United States and Canada, the United States has 33 percent more surgeons per capita. Clearly, this is the reason people in the United States undergo 40 percent more operations per capita than do Canadian.
The explanatin given above rests on an assumption that
(A) patients in the United States do not have a greater need for surgery than do patients in Canada
(B) the population of the United States is not larger than that of Canada
(C) United States patients sometimes travel to Canada for certain kinds of surgery
(D) general practitioners in the United States do not as a rule examine a patient who is a candidate for surgery before sending the patient to a surgeon
(E) there are no unneccessary surgical operations performed in Canada

答案是A，但我不是很明白，看了书上的译文还是很模糊。望哪位NN能给我指点迷津，谢谢！

lawyer_1

原文逻辑：美国外科医生多-----每个美国人接受的手术多

A。排除他因：不是更多的美国人须做手术

willsum

明白了。多谢指教。：）

唐三彩

这道题真的很有意思，看来美国人认为，只要外科医生多，那病人动手术的就多。也许不是病人愿意动手术，而是医生强迫病人动手术的说。。。。。。。