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    The Bunsen Burner is so named because it is thought by Robert Bunsen. A. to be invented B. having been invented C. invented D. to have been invented 【查看更多】

     

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    The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

    A. to be invented                   B. having been invented

    C. invented                         D. to have been invented

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    The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

    A. to be invented               B. having been invented

    C. invented                     D. to have been invented

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    The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

    A. to be invented               B. having been invented

    C. invented                     D. to have been invented

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    The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

      A. to be invented               B. having been invented

      C. invented                     D. to have been invented

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    The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

    A. to be invented　　　　　　　 B. having been invented

    C. invented　　　　　　　　　 D. to have been invented

     

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