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    We cannot figure out quite a number of insects, birds, and animals are dying out.A. that B. as C. why D. when[解析]C:figure out=understand by thinking. 理解.从句意看我不明白大量物种正在消亡.缺少状语.排除A.B项.从are dying out的时态排除D项.应该是我不明白大量物种为什么正在消亡. 【查看更多】

     

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    We cannot 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 cannot 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 cannot 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 cannot 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 cannot 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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