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    精英家教网 > 高中英语 > 题目详情

    When ________ to the market, these products were very popular.

    A. introducing    B. introduced

    C. introduce    D. being introduced

     

    【答案】

    B

    【解析】

    试题分析:考查非谓语动词。由结构可知When ________ to the market, 在句中做状语，而逻辑主语these products和introduce之间是被动关系， being introduced表示正在进行的被动，不合句意，所以B选项正确。补充完整后为：when they were introduced to the market。句意：当被引进到市场上的时候，这些产品非常受欢迎。

    考点：考查非谓语动词。

     

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