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题目内容
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Like no previous technology, mobile technology has spread______an unprecedented pace in the last few years.
A.at
B.in
C.on
D.with
B.in
C.on
D.with
参考答案
参考解析
解析：本题考查介词用法辨析。题目意为“与之前的技术不同，移动技术在过去几年中以前所未有的速度发展。”根据题干，at a pace为固定搭配，意为“以……的速度”，因此A选项正确。
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共用题干
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is changingB
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people’s handwriting would have been better without computersB
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