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    Science and technology have in important ways to the improvement of agricultural production. A.attached B.assisted tributed D.witnessed 【查看更多】

     

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    Science and technology have ____in important ways to the improvement of agricultural production.

    A.     attached  B. assisted  C. contributed  D. witnessed

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    Science and technology have ____in important ways to the improvement of agricultural production.

    A.     attached  B. assisted  C. contributed  D. witnessed

    查看答案和解析>>

    .Science and technology have ____in important ways to the improvement of agricultural production.

    A.attached         B. assisted         C. contributed        D. witnessed

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