题目内容
【题目】The book has been translated into thirty languages since it _____ on the market in 1973.
A. had come B. has come C. came D. comes
【答案】C
【解析】句意:自从1973年上市以来,这本书已经被翻译成了 30种语言。主句是现在完成时,since引导的时间状语从句 用一般过去时,表示动作发生在过去并延续到现在。
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