问两道GWD题目 没看到讨论贴

pipilovelail

如果同学们知道讨论贴在哪里 告诉我 谢谢 或者帮忙解答

GWD-9-Q13:

Fact: Asthma, a bronchial condition, is much less common ailment than hay fever, an allergic inflammation of the nasal passages.

Fact: over 95 percent of people who have asthma also suffer from hay fever.

If the information given as facts above is true, which of the following must also be true?



A.      Hay fever is a prerequisite for the development of asthma

B.       Asthma is a prerequisite for the development of hay fever

C.      Those who have neither hay fever nor asthma comprise less than 5 percent of the total population

D.      The number of people who have both of these ailments is greater than the number of people who have only one of them

E.       The percentage of people suffering from hay fever who also have asthma is lower than 95 percent.



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.

明白题目说的是什么，没明白 题目答案的逻辑思路，第一题排除法可以选出E，就是想不明白怎么算出来的，第二题觉得ABCDE全是无关项。大家帮忙讲讲谢谢了

yhwut

第一个题，你需要画个图。一个小圆和一个大圆相交，小的代表ashma，大的是hay fever，他们交集是要大于小圆95%以上的面积。然后自然答案就出来了
第二个，感觉D是明显的削弱啊。其他选项确实无关

yhwut

哦，明白了，第二题选A
题说接触动物得病，接触频率一样的话，应该比率相同，但是现在他说动物园里的低，说明动物园里的得病的人不干了所以保持了较低的比率，不然的话应该都是>30%

yhwut

好难，一开始感觉A无关呢

pipilovelail

恩 都明白了 第二题说动物园的工作人员是30percent 后面又说general population who。。。is not 30 percent but substantially more. 意思是说他们比30percent还高，所以如果真有那么多时间接触动物的话，allergy的概率应该高于30percent，所以说动物园里面的人是去干别的工作了 所以他们才30percent 对吧？

pipilovelail

谢谢你 解释的挺好的 哈哈