单项选择题
1、根据下面内容，回答题：
Researchers have found that REM (rapid eye movement)sleep is important to human beings.This type of sleep generally occurs four or five times during one night of sleep lasting five minutes toforty minutes for each occurrence. The deeper a person's sleep becomes, the longer the periods ofrapid eye movement.
There are physical changes in the body to show that a person has changed from NREM (non-rapid eye movement)to REM sleep. Breathing becomes faster, the heart rate increases, and, as thename implies, the eyes begin to move quickly.
Accompanying these physical changes in the body there is a very important characteristic of
REM sleep. It is during REM sleep that a person dreams.
According to the passage,how often does REM sleep occur in one night?
A．Once.
B．Twice.
C．Four or five times.
D．Forty times.


2、购买债券得到的利息收入是(   )
A．按劳分配的收入
B．按生产要素分配的收入
C．剥削收入
D．风险收入


3、 设函数ƒ(sinx)=sin2x，则ƒ'(x)等于(　　)．
A．2cosx
B．-2sinxcosx
C．x
D．2x


4、
A． 2dx   
B．
C． dx 
D．0


5、 下列合同中，合同一方在合同终止后有返还原物义务的是（　　）。
A．买卖合同
B．租赁合同
C．消费借贷合同
D．委托合同


6、 甲将其电脑借给乙使用，乙却将该电脑卖给丙。依据我国《合同法》的规定，下列关于乙、丙之间电脑买卖合同效力的表述中，正确的是（　　）。
A．效力待定
B．有效
C．无效
D．得变更或撤销


7、 没有公证遗嘱的数份遗嘱中，如果内容相抵触的，以（　　）。
A．自书遗嘱为准
B．代书遗嘱为准
C．录音遗嘱为准
D．后所立的遗嘱为准


填空题
8、


简答题
9、 电影艺术：《乱世佳人》

10、 简述“德育过程是一个长期的、反复的、逐步提高的过程”这一德育过程规律。

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