亲们，罗技JJ69，选啥？

笨蛋加油

69. GWD-14-Q15 【by wangyang1195】
og上原材料，题目不同，是问原因.
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
l

kelvinhu

选 E

12604698

归纳题，画个韦恩图，大圈和小圈交叉，大圈是 hay fever，小圈Asthma，是交叉范围是小圈的95%，e就是那个交叉范围占大圈的比例~

笨蛋加油

大牛啊，太噻了

笨蛋加油

归纳题，画个韦恩图，大圈和小圈交叉，大圈是 hay fever，小圈Asthma，是交叉范围是小圈的95%，e就是那个交叉范围占大圈的比例~

-- by 会员 12604698 (2011/11/6 20:53:03)

12604698

哦。没看到问原因，我以为是原题呢。这5个选项里没有原因吧，因为abcd和原文的意思是相矛盾的。e只是个现象。asthma可能是hay fever的并发症，但还有小部分不是。
会不会是fever可能产生某个东西，然后这个东西是asthma的  prerequisite 。
胡乱猜的~不过gmat很喜欢再引入个新东西然后再用这个东西把2个无关的事物联系在一起~
个人感觉~

gmyy123

但是A选项不就是表达这个意思么？

12604698

但是如果Hay feve是先决条件那不是说所有Asthma的人都要Hay fever么，也是就大圈套小圈了，剩下5%怎么解释？？