狗狗的15题应该是下面的这个题吧，求确认 People who have spent a lot of time in contact with animals ofen 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 the menbers of the general population who have spent a similarly large amout of time in close contact with animals, the percentage with animal-induced allergies is not 30 percent but substantially more. Which of the folllowing, if true, provides the strongest ground for the experts' conclusion? A. A zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation B. A zoo employee is more likely than a person in the general population to keep one or more animal pets at home C. The percentage of the general population whose level of exposure to animals matches that of a zoo employee is quite small D. Exposure to domestic pets is, on the whole, less likely to cause animal-induced allergy than exposure to many of the animal keep in zoos E. Zoo employees seldom wear protective gear when they handle animals in their care -- by 会员 hukeab (2010/7/5 18:34:08)
确认，对~ | 
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发表于 2010-7-5 21:08:40
