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--Every means has been ______. --No one is effective.

时间:2022-06-16 21:50:48

--Every means has been ______.

--No one is effective.

A.tried for

B.tried on

C.tried in

D.tried out

答案及解析: D

解析:

无A、C两项表达法。try on表示“试穿”,而此处表示“试验某物来检验其功能、效果等”,用try out。

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