Charles Babbage is generally considered______-the first computer.

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

C


解析:

非謂動(dòng)詞表示的動(dòng)作如果發(fā)生在句子謂語動(dòng)詞表示的動(dòng)作之前，非謂語動(dòng)詞就要用完成體。

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