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    精英家教网 > 高中英语 > 题目详情
    It was not until then that I came to know that knowledge _______ only from practice.?
    A．had comeB．has comeC．cameD．comes
    D

    试题分析：考查时态。本句中的knowledge comes only from practice是一个客观真理；在任何情况下都使用一般现在时。故D正确。
    点评：在英语中表示客观真理的句子在任何情况下都要使用一般现在时，这是一条永远都不变的规则。
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