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    【题目】 The nationwide smog serves as a constant reminder, indicating that it’s high time we ______ on ourselves.

    A. would reflect B. have reflected

    C. are reflecting D. reflected

    【答案】D

    【解析】试题分析：考查动词。句意：全国烟雾作为不断的提醒者,表明是时候我们反思自己。反思自己的过去，时态为过去时，选项D正确。

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