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In the past few years, Chinese scientists ________ great success in the field of space flight.
A.achievedB.have achievedC.wonD.had won
B
考察时态及词义辨析.win赢得;achieve取得.句意:在过去的几年中,中国科学家已经在航天领域取得了巨大的成功.结合语境可知本句描述的是现在已经完成动作,故用现在完成时态,选B.
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