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    What worries us is that, more and more forest being destroyed, some animals are facing the danger of dying out. A. with B. by C. as D. for 【查看更多】

     

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    Although medical science      control over several dangerous diseases，what worries us

     is that some of them are returning．

     A．achieved    B．has achieved        C．will achieve          D．had achieved

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    Although medical science ______ control over several dangerous diseases, what worries us is that some of them are returning.

    A. achieved          B. has achieved       C. will achieve         D. had achieved

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    Although medical science________ control over several dangerous diseases, what worries us is that some of them are returning.?

    A．achievedB．has achieved
    C．will achieveD．had achieved

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    Although medical science ________ control over several dangerous diseases, what worries us is that some of them are returning．


    1. A.
      achieved
    2. B.
      has achieved
    3. C.
      will achieve
    4. D.
      had achieved

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    Although medical science________ control over several dangerous diseases, what worries us is that some of them are returning.?

    A．achieved                              B．has achieved

    C．will achieve                            D．had achieved

     

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