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作者: miffycn    时间: 2007-5-2 14:07
标题: 已解决

22. GWD26-Q22
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?
1A zoo employee who develops a serious animal-induced allergy is very
likely to switch to some other occupation.
2A zoo employee is more likely than a person in the general population
to keep one or more animal pets at home
3The percentage of the general population whose level of exposure to
animals matches that of a zoo employee is quite small.
4Exposure to domestic pets is, on the whole, less likely to cause animal-
induced allergy than exposure to many of the animals kept in zoos.
5Zoo employees seldom wear protective gear when they handle animals
in their care.

我排除了2-5 可是1 还是匪夷所思 怎么会有这么奇怪的答案呢/? 我不明白呀不明白???  请帮助我一下吧?


[此贴子已经被作者于2007-5-3 10:01:39编辑过]

作者: miffycn    时间: 2007-5-2 22:12

没有人回答.......


作者: gonghao    时间: 2007-5-2 22:33

experts conclude that among members of the general
population who have spent a similarly large amount of time in close contact with animals,

如果这些人呆着不动,那么得病的概率是30%,但是结论是大于30%,那么下列哪些选项能支持这个结论

A:得了病的离开(这些得了病的并且离开的人,也算在members of the general
population who have spent a similarly large amount of time in close contact with animals里)这些人的得病率是100%

这些人离开后,会有新来的填补上,对于新来的一批人来说,又有30%的人得病,那么刚好支持了结论。


作者: miffycn    时间: 2007-5-2 22:59

   若有所思...谢谢斑竹~~  

我问了下我们外教  他说看不懂 哈哈`  还是中国人的logic比较好~~~






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