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        1. 精英家教網 > 高中英語 > 題目詳情

          【題目】Conservationists __________on setting aside natural reserves for the wild species they are trying to protect during the past decade.

          A.focusedB.focusC.have focusedD.had focused

          【答案】C

          【解析】

          考查時態(tài)辨析。句意:自然保護主義者在過去幾十年里一直在致力于為他們盡力保護的野生動物物種留出自然保護區(qū)。根據during the past decade,此處應該用現在完成時。故選C。

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