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    The light bulb ______ by Edison in the middle of the 1780s.

    A．is inventedB．was inventedC．inventedD．invent

    B

    解析试题分析：句意：电灯是爱迪生在18世纪80年代中期发明的。应用被动语态的过去时。句中有in the middle of the 1780s表示18世纪80年代中期，是一个过去时间，故用一般过去时的被动形式。
    考点：一般过去时的被动形式
    点评：被动是中考中必考的语法点。解答好此类被动语态的题目，首先需要对句意有充分的理解，其次注意被动语态的基本形式。对于各个时态的被动语态，学生在平时的学习中都必须了然于心，中考英语中很亲睐考察将来时的被动语态，即will+be+done.

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