陈向东的黄皮逻辑-假设专题第30题 although the ratio of physicians to total population is about the same in the united states and canada, the USA has 33% more surgeons per capita. clearly, this is the reason people in the 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 USA do not have a greater need for surgery than do patients in canada.
B. the population of the USA is not larger than that of canada.
C. USA patients sometimes travel to canada for certain kinds of surgery.
D. general practitioners in the USA 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.
The answer is A.
我选的是D。
完全不理解意思,希望高人指点,谢谢
-- by 会员 cuifeilin (2011/9/7 16:04:34)