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    13．The school rules state that no child _______ be allowed out of the school during the day unless they are with an adult．（　　）
    A．shallB．willC．needD．might

    分析 学校规章规定：除非有成年人陪同，否则孩子们在校期间不能出学校．

    解答 答案是A．
    考查情态动词，根据句意：学校规章规定除非有成年人陪同，否则孩子们在校期间不能出学校． shall用在此表示按法律、条约、规章等必须履行的义务．所以答案选A．

    点评 本题考查情态动词的用法．情态动词本身有一定的词义，但是不能独立作谓语，只能和行为动词一起构成谓语．情态动词用在行为动词前，表示说话人对这一动作或状态的看法或主观设想．所以在做题时应该把握好说话人的情感态度．

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