题目内容

【题目】—Who ________ the electric light bulb?

—Thomas Edison.

A. performed B. discovered

C. imagined D. invented

【答案】D

【解析】

句意：-谁发明了电灯泡？-托马斯爱迪生。A.表演B.发现C.想象D.发明，从答句看出前句应该是在问“是谁发明了灯泡”，discover 指“发现”某种本来存在，而以前未被发现的事物或未为人所知的东西。invent 指“发明”，即原来没有而后来发明创造的东西。在爱迪生发明灯泡之前世界上是没有灯泡的，所以使用invent更为合适，故选D。

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