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  • In our school library there        a number of books on science and the number of them           growing larger and larger.
    A．is , are B．are , is C．has , is D．have , are
    【考点】情态动词,名词,固定搭配,量词
    【分析】请登陆后查看
    【解答】请登陆后查看
    难度：中等
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