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.
新版GWD的解答裡竟然寫X，然後又找不到其他的出處，真抱歉！
但我認為這題看起來很像考Venn diagram 所以直覺選了 C
不過美國人一致的答案竟然是 E。
挖勒∼怎麼可能？如果說這題考的是數學的話，那美國人的答案就絕對不能參考啦∼
