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    23、 It is ______ that all the governments should join hands to prevent H1Ni flu from spreading. Ks5u

    A. essential         B. reliable            C. precious       D. traditional Ks5u

    23、A

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     It is ______ that all the governments should join hands to prevent H1Ni flu from spreading. Ks5u

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    科目：高中英语 来源： 题型：

     It is ______ that all the governments should join hands to prevent H1Ni flu from spreading.  

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