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英语
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Computers must be of great use to ________ doing the scientific research.
A．those B．who C．those who D．whomever
为什么呢?
人气：458 ℃ 时间：2020-08-03 23:46:04
解答
因为 those doing == those people who are doing --------强调‘正在’做某事的人们.
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