問題詳情

18. Special equipment is ______ detect signs of life under collapsed buildings.
(A) used for
(B) used as
(C) used to
(D) used with

參考答案

答案:C[無官方正解]
難度:適中0.555556
統計:A(3),B(1),C(5),D(0),E(0)

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