Peter, David and Paul said following sentences: Peter: David is a liar, Paul always tells the truth. David: Peter is truthful.

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问题 Peter, David and Paul said following sentences:
Peter: David is a liar, Paul always tells the truth.
David: Peter is truthful.
Paul: David is a liar, Peter is truthful.
Two of these men always tell the truth, one of them sometimes tells the truth and sometimes lies. Which of these men is a liar?

选项

答案David

解析 (Peter和Paul都认为David is a liar，三人中只有一个人有时会说谎，不可能两人同时说谎，所以David是说谎的人。)

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本试题收录于： B类竞赛（英语专业本科专科）题库大学生英语竞赛（NECCS）分类

B类竞赛（英语专业本科专科）

大学生英语竞赛（NECCS）

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Peter, David and Paul said following sentences: Peter: David is a liar, Paul always tells the truth. David: Peter is truthful.

B类竞赛（英语专业本科专科）

大学生英语竞赛（NECCS）

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