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题库 / GMATLA-CR-92
People who have spent a lot of time in contact with animals often develop animal-induced allergies, some of them quite serious. In a survey of current employees in major zoos, about 30 percent had animal-induced allergies. Based on this sample, experts conclude that among members of the general population who have spent a similarly large amount of time in close contact with animals, the percentage with animal-induced allergies is not 30 percent but substantially more.
Which of the following, if true, provides the strongest grounds for the experts' conclusion?
A zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.
A zoo employee is more likely than a person in the general population to keep one or more animal pets at home
The percentage of the general population whose level of exposure to animals matches that of a zoo employee is quite small.
Exposure to domestic pets is, on the whole, less likely to cause animal-induced allergy than exposure to many of the animals kept in zoos.
Zoo employees seldom wear protective gear when they handle animals in their care.
类比推理
P: 花一定时间接触动物的动物园现职员中过敏比例为30%
C: 大众群体里花同样时间与动物接触的人的过敏比例远大于30%
A选项提供了能支持专家推论的两个群体的差异
B选项在”接触动物时间一样“的前提上做文章，属于无关选项
C和D都是无关选项
E选项是削弱项
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