— The terrible accident is under investigation.

— Actually, quicker action _________ those workers trapped in the mine.

A．may have saved

B．must have saved

C．should have saved

D．could have saved

 

【答案】

Ｄ

【解析】情態(tài)動詞用法辨析。Ａ也許會做某事；Ｂ一定做了某事；Ｃ本應(yīng)該做某事；Ｄ本可以做某事；結(jié)合句意可知Ｄ正確。句意：—這個可怕的事故正在調(diào)查中�！獙嶋H上，迅速行動本可以挽救那些被困在煤礦中的工人。

 

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