【題目】Edison the electric light lamp.
A.invent
B.discover
C.invented
D.discovered

【答案】C
【解析】句意:愛迪生發(fā)明了電燈。invent意為“發(fā)明”,discover意為“發(fā)現(xiàn)”。由句意可知,句子應(yīng)用一般過去時. 故選C。

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