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18、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

18、A

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科目：高中英語 來源： 題型：單選題

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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科目：高中英語 來源： 題型：

 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

查看答案和解析>>

科目：高中英語 來源： 題型：

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

查看答案和解析>>


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