标题: GWD-9-Q13题目绝对是错误的！ [打印本页] 作者: Sean0727 时间: 2017-11-14 04:38 标题: GWD-9-Q13题目绝对是错误的！ 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.
E明显是错误的。只能得出E这个比例是小于percent of people who have asthma also suffer from hay fever，由于这个比列是over 95%,所以无法得出结论 小于95%
当percent of people who have asthma also suffer from hay fever 等于99% 或者98%时The percentage of people suffering from hay fever who also have asthma 很有可能大于95%
比如 同时得两种病的人数为99人，1人只得了Asthma，2人只得了hay fever。
这样比例就是 99% 和 99/101=98%。