2. 外语
  3. Charles Babbage is generally considered ______ the first computers.

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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