GWD31-40

asx223

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.（E)

[此贴子已经被作者于2009-4-12 21:30:01编辑过]

jbyupei

这题有意思，

设 A=asthma  F=fever

原文信息：　　Ｆ患者大于Ａ患者，　　Ａ患者中，多于９５％的人都患了Ｆ

Ｅ选项，　Ｆ患者中，少于９５％的人患Ａ。　

分析：假如说F患者中有大于等于95%的人患A， 是不是能得出 F患者总数小于A患者总数 呢？  和原文第一句话违背

asx223

是不是因为Asthma, a bronchial condition, is much less common ailment than hay fever

所以不可能在hay fever的患者中有那么高的asthma患者比例啊

alibaba_2009

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