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Thomas Edison worked ______ hours a day so he called himself a "two-shift man".
Thomas Edison worked ______ hours a day so he called himself a "two-shift man".
游客
2024-07-02
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问题
Thomas Edison worked ______ hours a day so he called himself a "two-shift man". [br] Of all the inventions, ______ was probably the most important for civilization.
选项
A、the vote recorder
B、the stock ticker
C、the light bulb
D、the motion picture camera
答案
C
解析
根据第一段可以推断爱迪生对人类社会贡献最大的发明是电灯。
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