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    Astronaut Zhai Zhigang has become the first Chinese in space. A. walking B. walked C. to have walked D. to walk 【查看更多】

     

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     Astronaut Zhai Zhigang has become the first Chinese_____in space.

    A. walking         B. walked          C. to have walked    D. to walk

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     Astronaut Zhai Zhigang has become the first Chinese_______in space.

    A. walking         B. walked          C. to have walked    D. to walk

    查看答案和解析>>


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