【題目】The electric lamp ____ by Edison.

A. was invented B. is invented C. was invent D. invented

【答案】A

【解析】句意：點(diǎn)燈是被愛迪生發(fā)明的。根據(jù)語(yǔ)境可知是一般過去時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)，其結(jié)構(gòu)是was/were done的形式。根據(jù)題意，故選A。

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