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    29．Some blood types are quite common, others are regionally , and still others are rare everywhere. A．contributed B．distributed C．obtained D．expanded 【查看更多】

     

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    Some blood types are quite common，others are regionally______，and still others are rare everywhere.

    A．distributedB．contributedC．obtainedD．convinced

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    Some blood types are quite common，others are regionally______，and still others are rare everywhere.


    1. A.
      distributed
    2. B.
      contributed
    3. C.
      obtained
    4. D.
      convinced

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    Some blood types are quite common，others are regionally ________，and still others are rare everywhere．

    A．distributed            B．contributed           C．obtained            D．contradicted

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