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    Bell was very great. He _______ the telephone.


    1. A.
      found
    2. B.
      found out
    3. C.
      discovered
    4. D.
      invented

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    Bell______ the telephone in 1876.    
    A. find                
    B. found    
    C. invented              
    D. was invented

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    Bell           the telephone which is still being used today.    
    [     ]
    A. invented                  
    B. discovered    
    C. found                    
    D. found out

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    ——Bell said, “The earth goes around the sun．”

    ——Bell said that the earth         around the sun．

    A．goes                     B．went                 C．going                  D．gone

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    Bell won the fame as the inventor of the telephone when he ________ as a teacher of deaf children．

    [　　]

    A．employed

    B．is employed

    C．was employing

    D．was employed

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