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    The computer in 1946 in America.

    A. is inventedB. was inventedC. inventsD. invented

     

    B

    【解析】

    试题分析：句意: 电脑是1946年在美国被发明的。根据句意可知这是一件过去的事情了，而且句子的主语computer 与invent 之间构成被动的关系，故应使用被动语态。一般过去时的被动语态应是was/were + 过去分词。故选B。A选项是一般现在时的被动语态；C是一般现在时，D是一般过去时，两项没有用被动语态。

    考点：考查动词。

     

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