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标题: GWD9-13 [打印本页]
作者: vacationer 时间: 2005-9-5 10:31
标题: GWD9-13
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?
- Hay fever is a prerequisite for the development of asthma
- Asthma is a prerequisite for the development of hay fever
- Those who have neither hay fever nor asthma comprise less than 5 percent of the total population
- The number of people who have both of these ailments is greater than the number of people who have only one of them
- The percentage of people suffering from hay fever who also have asthma is lower than 95 percent.
这题答案是什么? 没有找到相关的帖子,我下载的XY版无重复题上也没有这道的答案
作者: 寂寞的声音 时间: 2005-9-5 11:27
我选E
A的得病数远远小于H,并且A种95%都会同时感染H,那么取反就是E了
作者: vacationer 时间: 2005-9-6 12:11
以下是引用寂寞的声音在2005-9-5 11:27:00的发言:我选E
A的得病数远远小于H,并且A种95%都会同时感染H,那么取反就是E了
取反就是E了?怎么推出来的啊?
作者: PKGMAT 时间: 2005-9-24 12:04
because: "Asthma is much less common ailment than hay fever", 也就是HF的数量会比A多,分母大,比例就小。
作者: amber0919 时间: 2006-5-1 16:12
作者: amber0919 时间: 2006-5-1 16:15
但也推不出小于95%吧?
作者: 加拿大帅哥 时间: 2007-1-31 10:41
PKGMAT,
言之有理!
if AS persons are 100, HF persons are 200
96% AS (including HF suffering)=96 persons 96 /200 HF < 96%
作者: cakemouse 时间: 2007-8-19 15:57
我觉得这个题目不严谨。什么叫much less common?!比如得A的人100个,其中96个FEVER。另外,总共FEVER的人101个,结果是96/101。那么这个小于95%就不成立。所以,OVER 95%到什么程度,MUCH LESS COMMON 到什么程度都将决定结果的。
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