【題目】Don't touch that wire with a wet hand. We ______ always be careful with electricity.

A. needB. canC. mustD. may

【答案】C

【解析】

句意:別用濕手碰那根電線。我們必須始終小心用電。

本題考查情態(tài)動(dòng)詞。A.需要;B.可以;C.必須;D.可以。根據(jù)上句Don't touch that wire with a wet hand. 別用濕手碰那根電線。根據(jù)句意可知,此空是必須的意思,應(yīng)填must,故選C。

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