One works hard with a high purpose and not just to show______.A.inB.offC.overD.up

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One works hard with a high purpose and not just to show______.

A.in

B.off

C.over

D.up

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗