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. 第一个fact 说 hay fever 比asthama 普遍
第二个fact 说 得asthma的患者中超过95%同时患有hay fever 就凭这两点，怎么就能推出患有hay fever的患者中同时患有asthma的少于95%？这里的分母是患有hay fever的患者总和，而不是fact II中的患有asthma的患者总和，不是吗？ 忘指点迷津~~
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