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 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 animals kept in zoos. E. Zoo employees seldom wear protective gear when they handle animals in their care. 参考答案是A。这也是CD17－22题，偶实在有点不明就里，这里对动物有敏感症的动物公园员工转换工作 对结论有什么support作用呢？谢谢！ 哦，想想又好像明白啦！就是说动物公园的员工染上病的不少都转换工作啦，亦就是说现在survey已经是underestimate了那个比例啦，所以在一般人之中，如果也像公园员工一样频繁接触动物的染上病的比例就应该更高啦！偶的理解不知对不对，谢谢指教！ | 
