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    ＿＿several times, the young scientist still kept on making his experiments. A.Having been failed B.Having failed C.Though failed D.Because of failure 【查看更多】

     

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    ＿＿several times, the young scientist still kept on making his experiments.

    　　A.Having been failed    B.Having failed

    　　C.Though failed         D.Because of failure

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    ＿＿several times, the young scientist still kept on making his experiments.

    　　A.Having been failed B.Having failed　 C.Though failed D.Because of failure

    查看答案和解析>>


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