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    25．Some English scientists are identifying problems technology in the 21st century. If solved, the solutions could change the world. A．facing B．faced C．being faced D．having faced 【查看更多】

     

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    Some English scientists are identifying problems ____ technology in the 21st century. If solved, the solutions could change the world.


    1. A.
      facing
    2. B.
      faced
    3. C.
      being faced
    4. D.
      having faced

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     Some English scientists are identifying problems ____ technology in the 21st century. If solved, the solutions could change the world.                         

           A. facing B. faced  C. being faced D. having faced

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    Some English scientists are identifying problems ____ technology in the 21st century. If solved, the solutions could change the world.

    A．facing                         B．faced                  C．being faced          D．having faced

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