题目内容

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
A
考查句型;Sb /sth is thought to have done，某人据认为已经做了什么，句意是;更多的野牛被杀死，野牛数量被认为在1850到1910之间已经从6千万下降到几百头了。选A。
练习册系列答案
相关题目
When ________ what made him a popular person, he said it was his personality.
A．askingB．askedC．being askedD．ask
The young mother walked off, leaving the little boy ___________ in the room.
A．cryB．crying C．criedD．to cry
Since then, more than 2 billion apps have been downloaded at prices ________ free to $900.
A．ranging betweenB．ranging fromC．rang betweenD．rang from
Mr. Smith is busy these days ________ a new book on how to develop a child’s reading skill.
A．working outB．working onC．working forD．working with

.An air France jet is reported________in the Atlantic Ocean with 228 people aboard，the airline’s worst disaster in its 75-year history．
A．to have crashedB．to have been crashed
C．having crashedD．having been crashed
In the morning you can get up only______ all your equipment buried and you’ve got to dig it out．
A．to be foundB．foundC．to findD．finding

Mr Smith said that he would delay introducing the scheme because of the demands ______ on teachers by other educational reforms.
A．madeB．makingC．makeD．to make

The Russian women athlete was in the lead all the way in the women’s 10-meter air rifle, only __________ the final to Du Li.
Alosing            B. to lose          C. lost               D. lose

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网