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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1241

Without electronic computers, much of today’s advanced technology         achieved.

A.must have been
B.could have been
C.should have
D.would not be
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Withoutelectroniccomputers,muc