As is known to all, great scientific achievements may have positive effect on our life a——青夏教育精英家教网—

摘要：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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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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