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    14、_______ is known to us all is that there have been five cases of A(H1NI) influenza on the mainland, two of whom have been cured.

    A．It                            B．As                       C．That                       D．What

    14、D

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    _______ is known to us all is that there have been five cases of A(H1NI) influenza on the mainland, two of whom have been cured.

    A．It                            B．As                       C．That                       D．What

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