We’ve failed three times in the experiment,so we’ll have to do it       time.A.f

We’ve failed three times in the experiment,so we’ll have to do it       time.A.f

题型:不详难度:来源:
We’ve failed three times in the experiment,so we’ll have to do it       time.
A.fourB.a fourthC.fourthD.the fourth

答案
B
解析
此题考查序数词的用法。一般来说,定冠词+序数词表示顺序,而不定冠词+序数词表示“又一次”。
举一反三
The small box is       as the big one.
A.one-tenth the sizeB.one-tenths as large
C.one-tenths largeD.one-tenth as large

题型:不详难度:| 查看答案
He did it       it took me.
A.one-third a timeB.one-third time
C.the one-third timeD.one-third the time

题型:不详难度:| 查看答案
The young dancers looked so charming in their beautiful clothes that we took
       pictures of them.
A.many ofB.masses ofC.the number ofD.a large amount of

题型:不详难度:| 查看答案
      people in the world are sending information by E-mail every day.
A.Several millionB.Many millionsC.Several millionsD.Many million

题型:不详难度:| 查看答案
      of the land in that district       covered with trees and grass.
A.Two fifth;isB.Two fifth;areC.Two fifths;isD.Two fifths;are

题型:不详难度:| 查看答案
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