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    527] Charles Babbage is generally considered the first computer. [译文] Charles Babbage被认为是第一台电脑的发明者. A. to invent B. inventing C. to have invented D. having invented [答案及简析] C. 不定式的动作发生在谓语动作之前.要用完成时态. 【查看更多】

     

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