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    We can not figure out quite a number of insects, birds, and animals and dying out. A. that B. as C. why D. when 【查看更多】

     

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    We can not figure out ________ quite a number of insects, birds, and animals are dying out．

    [　　]

    A．that

    B．as

    C．why

    D．when

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    We can not figure out　　 quite a number of insects,birds,and animals are dying out.

    A、that　　　 B、as　　　 C、why　　　　 D、when

     

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