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【题目】We are confident that the environment ________ by our further efforts to reduce production.

A.had improvedB.is improvedC.will be improvedD.improved

【答案】C

【解析】

考查时态和语态。句意:我们相信,通过进一步努力减少生产,环境会得到改善。根据语境可知,此事还未发生,且此处表示被动,故用一般将来时的被动语态。故选C

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