It is well known that Tomas Edison ______ the electric lamp.A、discoveredB、found

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问题 It is well known that Tomas Edison ______ the electric lamp.

选项 A、discovered
B、found
C、developed
D、invented

答案 D

解析

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ItiswellknownthatTomasEdison______theelectriclamp.A、discoveredB、found