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【题目】Over the past 12 months the company ______ a 10 percent improvement.

A. managed B. manages

C. had managed D. has managed

【答案】D

【解析】

考查时态。句意:在过去的12个月里,该公司取得了10%的进步。表示“过去的动作或状态对现在造成的影响和结果”,用现在完成时,故选D。

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