本贴相关题目 TN (UDEH)

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People who have spent a lot of time in contact with animals often develop animal-induced allergies, a significant percentage of which are quite serious. In a survey of current employees in major zoos, about 30 percent had animal-induced allergies. However, a zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.

Which of the following hypotheses receives the strongest support from the information given?

AThe incidence of serious animal-induced allergies among current zoo employees is lower than that among the general population.
BZoo employees tend to develop animal-induced allergies that are more serious than those of other people who spend equally large amounts of time with animals.
CExposure to domestic pets is, on the whole, less likely to cause animal-induced allergy than is exposure to the kinds of animals that are kept in zoos.
DThere is no occupation for which the risk of developing an animal-induced allergy is higher than 30 percent.
EAmong members of the general population who have spent as much time with animals as zoo employees typically have, the percentage with animal-induced allergies is significantly more than 30 percent.

正确答案: E

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楼主

发表于 2009-9-26 10:52:00 | 显示全部楼层

可不可以这么看, 即使People who have spent a lot of time in contact with animals(第一组)得allergies的概率和current employees in major zoos(第二组)是一样的,也就是30%(暂且不看文中说的often是不是有可能大于30%), 由于a zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation使得第一组的比例超过30%