When the truth of sentence(a)guarantees the truth of sentence(b)and the falsi...

作者: tihaiku 人气: - 评论: 0

问题 When the truth of sentence(a)guarantees the truth of sentence(b)and the falsity of sentence(b) guarantees the falsity of sentence(a)，we can say that_________．

选项 A.sentence(a)presupposes sentence(b) B.sentence(a)entails sentence(b) C.sentence(a)is synonymous with sentence(b) D.sentence(a)contradicts sentence(b)

答案 B

解析题干描述的是句子(a)和句子(b)的真值条件，即如果(a)为真，那么(b)也为真；如果(b)为假，那么(a)也为假。由此判断，句子(a)的含义蕴涵于句子(b)的含义，选B。

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When the truth of sentence(a)guarantees the truth of sentence(b)and the falsi...

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