Charles Babbage is generally considered ______ the first computers.

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问题 Charles Babbage is generally considered ______ the first computers.

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

答案C

解析 此题考查的是非谓语动词中不定式的用法be considered/said/believed to do ,意为“据认为/据说/据相信做……”,而后面的动作若已经发生,则用完成时表示,故选to have invented。
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