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    The country has already sent up three unmanned spacecraft, the most recent at the end of last March. A．has been launched B．having been launched C．being launched D．to be launched 解析:the most recent前没有连词.说明后面不是一个句子.因而该题考查独立主格结构.根据题干中提供的时间判断.最近的spacecraft已经被发射.用现在分词完成式的被动式.所以选择B. 【查看更多】

     

    题目列表(包括答案和解析)

    The country has already sent up three unmanned spacecraft, the most recent          at the end of last March.

    A．has been launched     B．having been launched

    C．being launched        D．to be launched

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    The country has already sent up three unmanned spacecraft, the most recent _____ at the end of last March.

    A．has been launched    B．having been launched

    C．being launched       D．to be launched

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    The country has already sent up three unmanned spacecraft, the most recent __________ at the end of last March.

    A. has been launched     B. having been launched

    C. being launched   D. to be launched

    查看答案和解析>>

    The country has already sent up three unmanned spacecraft, the most recent          at the end of last March.

    A．has been launched     B．having been launched

    C．being launched        D．to be launched

    查看答案和解析>>

    The country has already sent up three unmanned spacecraft, the most recent ________ at the end of last March.

    A．has been launchedB．having been launched
    C．being launchedD．to be launched

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