Edison, who was considered ______ the bulb, is considered ______ the greatest inventor of the last century.

A. to invent; as
B. inventing; to be
C. having invented; for
D. to have invented; /
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科目：高中英語 來源：0110 期中題 題型：單選題

Edison, who was considered ______ the bulb, is considered ______ the greatest inventor of the last century.
[     ]
A. to invent; as
B. inventing; to be
C. having invented; for
D. to have invented; /

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