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    【题目】 It’s important for the figures _________ regularly.

    A. to be updated B. to have been updated

    C. to update D. to have updated

    【答案】A

    【解析】

    试题分析：考查不定式用法。本句中it是形式主语，真正的主语是后面的不定式短语。本句中的不定式是一个复合结构，the figures与动词update构成被动关系，所以使用被动语态。句意：这些数据被经常更新很重要。故A正确。

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