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    Because of high demand for Type O blood, supplies of it available in blood banks are usually limited. A. the; the B. /; the C. a; the D. /; / 【查看更多】

     

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    Because of _______ high demand for Type O blood, _______ supplies of it available in blood banks are usually limited.

    A. a; the                B. the; the     C. /; the               D. /; /

     

     

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