GWD26-Q22 与 GWD27-Q28 求NN分析~

clumsyorange

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?


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.


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GWD27-Q28 (GWD-26-Q22）
People who have spent a lot of time in contact with animals often develop animal-induced allergies, a significant percentage of which are quite serious.  In a survey of current employees in major zoos, about 30 percent had animal-induced allergies.  However, a zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.
Which of the following hypotheses receives the strongest support from the information given?


A.    The incidence of serious animal-induced allergies among current zoo employees is lower than that among the general population.
B.    Zoo employees tend to develop animal-induced allergies that are more serious than those of other people who spend equally large amounts of time with animals.
C.    Exposure to domestic pets is, on the whole, less likely to cause animal-induced allergy than is exposure to the kinds of animals that are kept in zoos.
D.    There is no occupation for which the risk of developing an animal-induced allergy is higher than 30 percent.
E.    Among members of the general population who have spent as much time with animals as zoo employees typically have, the percentage with animal-induced allergies is significantly more than 30 percent.

fondy

补上个贴子。
假设永远不换工作，工作在动物园和外面的人过敏比例都只会是30%。
然而由于动物园工作的过敏职员换工作，
这些职员是过敏的且接触时间一样多。所以转职到动物园以外的人时分子和分母都要增加。因为是真分数，越加越大，结果绝对会大于30%

H3.

文中假设了普通人和动物园的工作人员接触动物的时间一样的情况下，本来比例应该相同，但是因为动物园的员工过敏的都换工作，变成了普通人中的医院，剩下还在动物工作的大部分是不过敏的人，所以才导致了动物园的比率只有30%， 而普通人中的比率肯定比30%高。

Bradz

Some vs substantial是个可以argue的点。what proportion is 'some'? How big a difference is 'substantial'?

Krysta

A 答案说在Zoo工作的人过敏会换工作，那换工作就会导致本来计算 Zoo工作的人过敏的比例降低，在没有把换工作的人计算进来的时候已经有30%，那假如把他们包括进来，那就肯定超过30%。 再类比到general population，这个比例就是比30%大的。

AsianSid

感谢分享！               

fellowong

fondy

among members of the general population who have spent a similarly large amount of time in close contact with animals
理解了这点就知道a是正确的。

比目鱼香肉丝

这题很经典。
A 一定错。
B 题目中根本没有比较。
C domestic pets 题目中没有提到。
D 根本推不出来。
E  比较有意思。动物园的管理员的得病率一直为30%，而 general population 中的得病率会由于患病的动物管理员的加入而增多。自然会高于30%。

nolanhym

为什么我觉得这道题答案是E呢，

E 看起来像是削弱，实际上是在说：动物园管理员有时候会穿防护服。

所以证明动物园管理员有可能更少的感染疾病。