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10．A good rest between classes______ recover brain power to its best and make us perform better in class later．（　�。�
A．canB．mustC．needD．shall

分析 課間好好休息可以使大腦能力恢復到最佳狀態并且使我們在后來的課堂上表現得更好．

解答 答案：A．
can 表示能力；must必須，應該，一定，準是；need 需要，必要；shall 1．用于第一、第三人稱疑問句中，征求對方的意見和向對方請示．2．用于第二、第三人稱陳述句中，表示說給對方的命令、決心、警告、允諾或威脅等3．用在條約、規章、法令等文件中表示義務或規定，一般用于第三人稱．結合句意"課間好好休息可以使大腦能力恢復到最佳狀態并且使我們在后來的課堂上表現得更好．"可知，這里表示能夠，所以can符合語境，故選A．

點評 本題考查情態動詞的用法．要理解句意，掌握好各個情態動詞的用法．充分利用語境，注意分清各個情態動詞適用的句型，得出答案．

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