问GWD：17-22

夏日飘雪

?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.
A. A zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.
B.B. A zoo employee is more likely than a person in the general population to keep one or more animal pets at home
C.C. The percentage of the general population whose level of exposure to animals matches that of a zoo employee is quite small.
D.D. 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.
E.E. Zoo employees seldom wear protective gear when they handle animals in their care.

答案选A，额，不明白

夏日飘雪

A选项的意识是动物管理员有可能换职位。。
额，这表示会传染。。我没有想到这一层。。