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


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科目:高中英语 来源: 题型:

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

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科目:高中英语 来源:2011届重庆八中上学期高三第一次月考英语试题 题型:单选题

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

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