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    The element radium, in the chemistry lab, gave off a faint blue light. A. discovered B. to be discovered C. to discover D. discovering 【查看更多】

     

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     The element radium, ______ in the chemistry lab, gave off a faint blue light.

        A. discovered      B. to be discovered   C. to discover  D. discovering

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     The element radium, ______ in the chemistry lab, gave off a faint blue light.

        A. discovered      B. to be discovered   C. to discover  D. discovering

    查看答案和解析>>

    The element radium, ______ in the chemistry lab, gave off a faint blue light.

    　　 A. discovered　　 B. to be discovered　 C. to discover D. discovering

     

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