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    3．Much to my surprise，the trapped girl ________ stay alive in the ruins for up to seven days with nothing to eat or drink．（　　）
    A．canB．shouldC．mayD．must

    分析 让我非常惊讶的是，这位被困在废墟里没吃没喝多达七天的女孩居然还活着．

    解答 答案：B
    can 能够；should 应该；may也许；must 必须．should 除了表示应该外，还可以表示意外或惊奇，意思是居然，想不到；其它选项没有这个用法．故选B．

    点评 情态动词的用法是英语中常考的语言点．通常考查的方式有虚拟和推测，本题考查的是情态动词的特殊含义．学习时要注意积累．

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