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【单选题】

电路如图所示,的波形为( )。

A.
A
B.
D
C.
B
D.
C
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【简答题】A.China has a long history. B.China has a colorful and rich culture. C.It's not expensive and people are friendly. D.The scenery in China is beautiful.
【单选题】So well ________ in 2011 that the world has agreed that it was the year of China. [     ]
A.
did China perform
B.
China has performed
C.
was China performed
D.
China is performing
【单选题】Has Jessica ever been to China?
A.
Yes, she has been to China several times.
B.
Yes, she has been to China only once.
C.
No, she has never been to China.
D.
No, she has never been to China and Japan.
【单选题】So well in 2009 that the world has agreed that it was the year of China.
A.
did China perform
B.
China has performed
C.
was China performed
D.
China is performing
【判断题】实际上,个体通过努力提高自我价值的过程,也是其创造社会价值的过程。
A.
正确
B.
错误
【判断题】基本步法中,低冲击动作是总有一只脚离开地面的动作( )
A.
正确
B.
错误
【简答题】Every year there is the Spring Festival in China. Usually it is in January or February. It’s the most important festival in China. So before it comes, everyone has to prepare things. They buy beef, ...
【单选题】维氏硬度所用的测头是( )
A.
Φ1.588mm钢球
B.
120°金刚石圆锥
C.
140°金刚石圆锥
D.
136°的正四棱锥金刚石
【判断题】基本步法中,低冲击动作是总有一只脚离开地面的动作。()
A.
正确
B.
错误
【单选题】---What ____ the population of China ? ---China has a population of 1.3 ____.
A.
is, billions
B.
are; billions
C.
is; billion
D.
are; billion
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