◎ 题干
According to a recent U.S. survey, children spent up to 25 hours a week ____ TV.
A.to watchB.to watchingC.watchingD.watch
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“According to a recent U.S. survey, children spent up to 25 hours a week ____ TV.A.to watchB.to watchingC.watchingD.watch…”主要考查了你对  【序数词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。