Bell is considered the first phone in 1896.
A. inventing
B. having invented
C. to invent
D. to have invented
网友回答
A. inventing
B. having invented
C. to invent
(答案→)D. to have invented
解析:这题考查consider做为“认为”的用法:consider sb+不定式的完成式“认为某人已经做了”,句意是:Bell被认为在1896年发明了第一个电话。选D。