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【题目】We are trying our best to _______ costs and improve quality.

A.cut offB.cut upC.cut throughD.cut down

【答案】D

【解析】

考查动词短语辨析。句意:我们正在尽力降低成本,提高质量。A. cut off切断;B. cut up切碎;C. cut through穿过,挤进;D. cut down削减,降低。由语境可知,是降低成本,提高质量,cut down符合语境。故选D项。

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