gmat逻辑题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 the reason people in the United States undergo 40 percent more

gmat逻辑题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 the reason people in the United States undergo 40 percent more
gmat逻辑题
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 the reason people in the United States undergo 40 percent more operations per capita than do Canadian.
The explanation given above rests on an assumption that
(a)patients in the United States do not have a greater need forr surgery than do patients in Canada.
(b)the population of the United States is not larger than that of Canada.
其它选项就不说了.

gmat逻辑题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 the reason people in the United States undergo 40 percent more
physicians-泛指一般医师,也指内科医生
surgeons -外科医师
operations=surgery手术
这是假设题.
A翻译：美国病人不比加拿大病人需要更多的外科手术.（这个是排除外因影响.外因是——因为美国人需要更多的外科手术——所以需要更多的外科医生.）
题目：条件1,美国和加拿大的内科医生比例相同,（话说回来,这里我觉得physician翻译成医师还是内科医师都没有影响）条件2,美国人均比加拿大要多33%的外科医生.现象：这一季,美国人经历比加拿大多40%的外科手术.（因为外科医生多,所以有更多的手术,想说明这个问题.）
B选项对我来说是无关选项,整个题目都在问比例,人口总的具体数量多少已经不重要了.（==当然做题的时候不能这样想就不看选项了.）翻译：美国的人口不比加拿大多.
(C)United States patients sometimes travel to Canada for certain kinds of surgery.
美国的病人有时候去加拿大做外科手术——这个时候,加拿大的外科手术比率比美国多的,这里推翻结论.
(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.
D是无关选项.是说实习医生的事情.
(E) there are no unnecessary surgical operations performed in Canada.
E加拿大不需要更多的外科手术,这是一个干扰项,如果加拿大不需要手术了话,那么美国人经历的外科手术应该会比加拿大多140%……
额,以上,我是这样想的,我不知道想法有没有错,你最好去看看别人的答案.

我个人是这样理解的
the United States undergo 40 percent more operations per capita than do Canadian（美国人平均每人接受手术的次数高于加拿大人）本身应该有两种可能的解释：
1. 美国人have a greater need for surgery（比加拿大人对手术的需求要多），这可能是因为相关疾病率较高...

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我个人是这样理解的
the United States undergo 40 percent more operations per capita than do Canadian（美国人平均每人接受手术的次数高于加拿大人）本身应该有两种可能的解释：
1. 美国人have a greater need for surgery（比加拿大人对手术的需求要多），这可能是因为相关疾病率较高、或是观念不同等原因，因此哪怕surgeon人手并不比别的国家多，还是会抢着去做手术，导致人均手术次数比加拿大高
2. 美国人条件好，has 33 percent more surgeons per capita（平均每人分到的surgeon数比较多），所以才能够做更多次手术
然而文章中，Clearly, this is the reason people...这一句，直接把这个现象归因于第二种可能，说明作者排除了第一种可能，也就是说，他assume了加、美两国人对手术的需求比例是等同的
我自己没做过gmat的题目 对思路不大了解 可能理解不到位 你当个参考吧反正

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