标题: GWD18-Q15 [打印本页] 作者: lorrain_cc 时间: 2009-11-19 08:21 标题: GWD18-Q15 15. GWD-18-Q15 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
对于C不解~~~作者: lorrain_cc 时间: 2009-11-19 08:29
基数看错！！！ 囧！作者: ajassmine 时间: 2009-11-22 16:17
答案是E吗？作者: joywu1221 时间: 2009-11-22 16:37 标题: I think ans is E I think ans is E.作者: 粉红栀 时间: 2011-4-21 14:15
为什么选E???实在不理解哎。不是说两个都suffer的人 over 95%的 吗作者: 粉红栀 时间: 2011-4-21 14:15
people who have asthma also suffer from hay fever.
people suffering from hay fever who also have asthma 这两种人有什么区别？？？作者: guojinxin 时间: 2011-4-21 22:45
画图解决。。。。作者: 涩姬 时间: 2011-4-22 00:28
原题表述是 有AS的人中且有fever的占有AS的95%以上。 同时有个前提条件是 fever比AS更常见，也就是fever人更多。