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More bison were killed．The bison population is thought ______ from 60 million to just a few hundred between 1850 and 1910.

     A．to have fallen     B．having fallen      

       C．to fall                D．falling

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科目：高中英語 來源：2010-2011學(xué)年重慶八中上學(xué)期高三第一次月考英語試題 題型：單項填空

More bison were killed．The bison population is thought ______ from 60 million to just a few hundred between 1850 and 1910.

A．to have fallen

B．having fallen

C．to fall

D．falling

 

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科目：高中英語 來源： 題型：單選題

More bison were killed．The bison population is thought ______ from 60 million to just a few hundred between 1850 and 1910.


  1. A.
    to have fallen
  2. B.
    having fallen
  3. C.
    to fall
  4. D.
    falling

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科目：高中英語 來源： 題型：

More bison were killed．The bison population is thought ______ from 60 million to just a

few hundred between 1850 and 1910.

A．to have fallen                                          B．having fallen

C．to fall                                                    D．falling

查看答案和解析>>

科目：高中英語 來源：2011屆重慶八中上學(xué)期高三第一次月考英語試題 題型：單選題

More bison were killed．The bison population is thought ______ from 60 million to just a few hundred between 1850 and 1910.

A．to have fallenB．having fallen
C．to fallD．falling

查看答案和解析>>

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