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问一道逻辑题(陈向东的逻辑推理)
这道题是陈向东编的GMAT逻辑推理 书中的,因为找不到有关这本书中题目的讨论,所以新开一贴,麻烦nn们帮忙解释下。
P503
10. A recent survey showed that 50 percent of people polled believe that elected officials should resign if indicted for a crime, whereas 35 percent believe that elected officials should resign only if they are convicted of a crime. Therefore, more people believe that elected officials should resign if indicted than believe that they should resign if convicted.
The reasoning above is flawed because it
A. draws a conclusion about the population in general based only o a sample of that population
B. confuses a sufficient condition with a required condition
C. is based on an ambiguity of one of its terms
D. draws a conclusion about a specific belief based on responses to queries about two different specific beliefs
E. contains permises that cannot all be true
答案是b, 我选了a
实在想不通b所谓的充分条件,必要条件是怎么对应文中的推理? |
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