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单项选择题

在同一思维过程中，对于两个具有矛盾关系或具有反对关系的命题必须从中否定一个，不能两个都加以肯定，否则就会出现自相矛盾或两可的逻辑错误。（）

A.正确
B.错误

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热门试题

单项选择题矛盾律用公式表达就是：A不是非A。（）

A.正确
B.错误

单项选择题‎The reasons that reporters and writers do research are

A．Research shows.
B．A feature writer who is confident of his own knowledge of the story will be taken seriously by his sources and later by his readers.
C．Research will put the feature writer in the right direction for more necessary information.
D．All of the above