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【单选题】
With international ______ and education exchanges increasing every year, the number of Chinese students studying abroad has increased rapidly.A.
cooperation
B.
competition
C.
construction
D.
conflict
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举一反三
【单选题】We planted _________ trees last year. Two _________ of them are in the park.
A.
thousands of; hundred
B.
thousand of; hundred
C.
thousands of; hundreds
D.
thousand of; hundreds
【单选题】在Windows live mail电子邮件客户端软件中,“已发送邮件”文件夹保存的电子邮件是___________
A.
等待发送的邮件
B.
已经发送出去的邮件
C.
发送不出去的邮件
D.
发送出去被退回的邮件
【单选题】______ trees are cut down in the forests every year.
A.
Thousand
B.
Thousands
C.
Thousands of
D.
Thousand of
【单选题】Five ______ trees were cut down in the mountain every year. [ ]
A.
thousand
B.
thousands
C.
thousand of
D.
thousands of
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