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标题: [求助]GWD-9-Q13 [打印本页]

作者: anchoretes 时间: 2010-9-29 06:52 标题: [求助]GWD-9-Q13

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.

想问一下，这个选项E是什么意思~怎么得出来的啊。。头都大了

作者: liyucmh 时间: 2010-9-29 15:50

我晕了果然高手现身吧
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作者: MarilynR 时间: 2010-9-29 20:13

是这样的,

可以在脑子里画一个大圆和一个小圆相交维恩图.结合两个fact, 因为H F交A超过A的95%, 又

因为HF人数比A多,所以倒过来,分母大了,A占HF肯定小于HF的95%.不知道说的对不对.

作者: anchoretes 时间: 2010-10-3 06:43

谢楼上，顺便能不能帮忙翻译一下句子E啊。。。

句子E的意思是说

The percentage of people{（ suffering from hay fever） who also have asthma} is lower than 95 percent.

得了HF病的人，又患有A病的人，低于HF人数的（还是总人数的）95%?

作者: IMARCUS 时间: 2010-10-5 20:41

是占suffering from hey faver的

肯定小于95% 因为asthma比hey faver nuch less common

我之前也没有看懂只是按照排除选出来的

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