题目内容
Charles Babbage is generally considered to _______ the first computer.
| A.to invent | B.inventing | C.to have invented | D.having invented |
C
考察不定式用法。Consider sb to do/be…认为某人…;发明了第一台电脑是一个已经完成的事情,所以使用完成式to have done.
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