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    Charles Babbage is generally considered the first computer. A. to invent B. inventing C. to have invented D. having invented 答:C．不定式的完成式表示不定式本身的动作发生在谓语动词之前.如:We seem to have met each other before.我们似乎以前见过面. 【查看更多】

     

    题目列表(包括答案和解析)

    Charles Babbage is generally considered ________ the first computer.

    A. to invent     B. inventing     C. to have invented     D. having invented

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    Charles Babbage is generally considered______-the first computer.

              A. to invent   B .inventing   C. to have invented   D. having invented

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    Charles Babbage is generally considered _____ the first computer.
    [     ]
    A. to invent       
    B. inventing    
    C. to have invented
    D. having invented

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    Charles Babbage is generally considered ________ the first computer.   
    [     ]
    A. to invent        
    B. inventing   
    C. to have invented    
    D. having invented

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    Charles Babbage is generally considered _____ the first computer.

    [     ]

    A. to invent
    B. inventing
    C. to have invented
    D. having invented

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