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    Scientists are confident that they can make lasers which can missiles. A. knock down B. knock out C. knock into D. knock off 【查看更多】

     

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             Scientists are confident that they can make lasers which can ____ missiles.

    A. knock down B. knock out                  C. knock into                 D. knock off

     

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           Scientists are confident that they can make lasers which can ____ missiles.

    A. knock down      B. knock out              C. knock into             D. knock off

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       Scientists are confident that they can make lasers which can ____ missiles.

    A. knock down      B. knock out              C. knock into             D. knock off

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