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已知命题p:;命题q:有意义.则是的( ) A.充分不必要条件 B.必要不充分...

 已知命题p:6ec8aac122bd4f6e;命题q:6ec8aac122bd4f6e有意义.则6ec8aac122bd4f6e6ec8aac122bd4f6e的(      )

A.充分不必要条件                       B.必要不充分条件

C.充要条件                             D.既不充分也不必要条件

 

 A.由p得,由q得,则q是p的充分不必要条件,故是的充分不必要条件.
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