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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 inthe United States undergo 40 percent more operations per capita than do Canadians.
The explanation 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 unnecessary surgical operations performed in Canada
答案说是a, 我怎么都无法理解，麻烦各位哥哥姐姐帮帮忙
还有，我在看陈向东的逻辑推理，感觉好难哦，比og上的难懂，这本书该不该用啊。。 | 
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发表于 2005-8-3 22:08:00
