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
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2010-7-4 13:17:44
