It was well known that Thomas Edison _____ the electric lamp.A discovered B inve

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问题 It was well known that Thomas Edison _____ the electric lamp.

选项 A discovered
B invented
C found
D developed

答案B

解析考点:动词词义辨析。invent“发明”，discover“发现”，found（find的过去时）“发现”，develop“研究、发展”。句意：大家都知道托马斯爱迪生发明了电灯。

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