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【单选题】
The Yerkes-Dodson law demonstrates thatA.
the level of arousal becomes too high, our performance will decrease.
B.
the level of arousal becomes too high, our performance will increase.
C.
the level of arousal becomes too high, our performance may increase or decrease.
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【单选题】（2011.09全国二级C题）以下选项中关于C语言常量的叙述错误的是（）。
A.
所谓常量，是指在程序运行过程中，其值不能被改变的量
B.
常量分为整型常量、实型常量、字符常量和字符串常量
C.
常量可分为数值型常量和非数值型常量
D.
经常被使用的变量可以定义成常量
【单选题】Fans can compare players of different eras and __________ their own all-time all-star team.
A.
wake up
B.
dream up
C.
dream of
D.
dream about
【单选题】It can be inferred that the fans' over-enthusiastic behaviors sometimes ______.
A.
express their dislike for the singers
B.
make the singers more popular
C.
show their likes and respect to the singers
D.
make practical jokes on the singers
【单选题】Can fans attend the press conference?
A.
Yes, but the faces should be recognizable
B.
Yes, but the fans must be obedient.
C.
Yes, but the number must be limited
D.
Yes, but they must be checked
【简答题】A．The walls of a shower room can be made of straw. B．Extractor fans can be fitted on a straw wall. C．Straw can 'breathe' naturally by itself. D．The straw wall looks exactly like a normal wall, with no...
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