作业帮超级困惑
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超级困惑
超级困惑
超级困惑
A.Hay fever is a prerequisite for the development of asthma.
不可能,如果是前提,那就不是95%,所有得asthma的人都应该先有hay fever.
B.Asthma is a prerequisite for the development of hay fever.
不可能,因为asthma比hay fever较为少见,如果是前提,就应该是相反的情况.
C.Those who have neither hay fever nor asthma comprise less than 5 percent of the total population.
无关,题目没提过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.
无关,题目没有提到hay fever的比例,无从知晓
E.The percentage of people suffering from hay fever who also have asthma is lower than 95 percent.
因为hay fever的人较多,因此asthma占hay fever的比例肯定比hay fever占asthma的比例小.
选E