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

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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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