Nowadays skilled workers such as carpenters electricians and TV repairmen often have hig

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Nowadays, skilled workers such as carpenters, electricians and TV repairmen often have higher income than college graduates. The old distinction that white-collar workers make a better living than blue-collar workers no longer_____true.

A.hold

B.stay

C.come

D.become

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热搜:a是b的充分条件,b是a的必要条件吗