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【判断题】
在进出口贸易中，我们要尽量选择我方责任低、费用少和风险小的贸易术语。()A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】求由摆线x=a(t-sint)，y=a(1-cost)的一拱(0≤t≤2π)与横轴所围成的图形的面积．
【简答题】求由摆线 x = a ( t - sin t ) , y = a (1 - cos t ) 的一拱 (0 £ t £ 2 p ) 与横轴所围成的图形的面积 .
【单选题】—Were there ___ sharks in the aquarium? —No, there weren't _____. [ ]
A.
any; any
B.
any; some
C.
some; any
D.
some; some
【单选题】— 2008 is drawing near. Any changes in Beijing? — Yes, more stadiums arc being built, and ______ people are learning English. [ ]
A.
more and more
B.
the more and the more
C.
the more and more
D.
more and the more
【单选题】According to the statistics, among the homeless in New York there were ______.
A.
more people in families than single persons
B.
about six thousand families
C.
3 children in family
D.
more families with two parents than one
【单选题】―Were there any sharks in the aquarium? ―______. [ ]
A.
Yes, there were
B.
No, there wasn't
C.
Yes, there was
D.
No, there were
【单选题】Were there any sesame streets in 1969?
A.
Yes, they taught Children.
B.
No, they were imaginary.
C.
Yes, they were in the South Africa.
D.
No, they were in the future.
【单选题】--- ___________ there any sharks in the aquarium? --- No, we didn’t see any.
A.
Did
B.
Had
C.
Have
D.
Were
【单选题】— Were there any dolphins in the aquarium? — ___________. We didn't see any in it. [ ]
A.
Yes, there were
B.
No, there weren't
C.
Yes, there are
D.
No, there aren't
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