Withthedevelopmentofscience,morene

发布时间：2020-07-27 13:42:20

With the development of science, more new technologies ________ to the field of IT．A.have introducedB.are being introducedC.are introducedD.were introduced

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B解析根据句意，空格处应用现在进行时的被动语态，故选B。
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