Charles Babbage is generally considered ______ the first computer.

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问题 Charles Babbage is generally considered ______ the first computer.

选项 A、to invent
B、inventing
C、to have invented
D、having invented

答案A

解析 consider的用法是consider to do sth,因此首先排除B和D。此句只说明发明这一个事实,不定式后用原形即可。而C为现在完成时,invent为非延续性动词,一般不用完成时,且此处也不强调对现在的影响,因此不选C。
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