GMAT逻辑题练习及答案(472)

2018-01-16 09:52

来源：新东方在线

作者：

　　1. Although 90percent of the population believes itself to be well informed about healthcare, only 20 percent knows enough about DNA. So apparently at least 80 percentof the population does not know enough about medical concepts to makewell-informed personal medical choices or to make good public policy decisionsabout health care.

　　The argument’sreasoning is questionable because the argument fails to demonstrate that

　　A. those people who can understandnews stories about DNA are able to make well-informed personal medical choices

　　B. more than 20 percent of thepopulation needs to be well informed about health care for good public policydecisions about health care to be made

　　C. one’s being able to makewell-informed personal medical choices ensures that one makes good publicpolicy decisions about health care

　　D. an understanding of DNA isessential to making well-informed personal medical choices or to making goodpublic policy decisions about health care

　　E. since 90 percent of thepopulation believes itself to be well informed about health care, at least 70percent of the population is mistaken in that belief.

　　答案：D

　　思路：本题的推论错误在于以偏概全，用对DNA的了解程度来考核wellinformed about health care的程度。据个例子，我们可否用掌握核物理知识的程度来考核对物理基本知识的掌握程度呢?显然不行!

　　A: 支持作者的观点

　　B: 无关

　　C: 无关

　　D: 本题的推论错误在于以偏概全，用对DNA的了解程度来考核wellinformed about health care的程度。据个例子，我们可否用掌握核物理知识的程度来考核对物理基本知识的掌握程度呢?显然不行!

　　E: 无关

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