It was Thomas Edison that______the electric lamp.

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问题 It was Thomas Edison that______the electric lamp.

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

答案A

解析 句意:是托马斯-爱迪生发明了电灯泡。invent发明,创造;discover发现,发觉;design设计,计划;develop开发,使成长。根据句意,故选A。
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