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    As is known to all, great scientific achievements may have positive effect on our life as well as society. A. /; a B. the ; a C. the; / D./; / 【查看更多】

     

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    As is known to all, ______ great scientific achievements may have ______ positive effect on our life as well as society.  

    A. /; a       B. the; a        C. the; /             D. /； /

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