单项选择题
1、
A．x=-2    
B．x=-1    
C．x=l 
D．X=0


2、
A．sin(x-1)+C
B．-sin(x-l)+C
C．sinx+C 
D．-sinx+C


3、 Whatever you do, you ________click with the right mouse button or the program will crash.
A．must not
B．don't have to
C．doesn't have to
D．needn't


4、根据下面内容，回答题：
It is bad to have food stuck between your teeth for long periods of time. This is because food attracts germs, germs produce acid, and acid hurts your teeth and gums. Flossing helps to remove the food that gets stuck between your teeth. This explains why flossing helps to keep your mouth healthy,but some doctors say that flossing can be also good for your heart.
It may seem strange that something you do for your teeth can have any effect on your heart.
Doctors have come up with a few ideas about how flossing works to keep your heart healthy. One idea is that the germs that hurt your teeth can leave the mouth and travel into your blood. Germs that get into the blood can then attack your heart. Another idea is based on the fact that when there are too many germs in your mouth, the body tries to fight against these germs. For some reason, the way the body fights these mouth germs may end up weakening the heart over time.
Not every doctor agrees about these ideas. Some doctors think that the link between good flossing habits and good heart health is only a coincidence. A coincidence is the occurrence of two or more events at one time apparently by mere chance. The incidence of these events is completely random, as they do not admit of any reliable cause and effect relationship between them. For example, every time I wash my car,it rains. This does not mean that when I wash my car,I somehow change the weather.
This is only a coincidence.
The theory that flossing your teeth helps to keep your heart healthy might not be true. But every doctor agrees that flossing is a great way to keep your teeth healthy. So even if flossing does not help your heart,it is sure to help your teeth. This is enough of a reason for everyone to floss their teeth every day.

Flossing effectively helps to keep your mouth healthy by preventing________.
A．germs from producing acid
B．food from entering your body
C．germs from entering into your blood
D．acid from contacting your teeth and gums


5、 以马克思主义为基础早探讨教育学问题的著作是（　　）。
A．加里宁的《论共产主义教育》
B．马卡连科的《教育诗》
C．克鲁普斯卡娅的《国民教育与民主制度》
D．杨贤江的《新教育大纲》


6、 下列各项中，不属于法定孳息的有（　　）。
A．租金
B．牛奶
C．利息
D．股息


7、下列带横线的字，解释正确的是（　　）
A．缮甲兵，具卒乘，将袭郑。    具：具有       
B．李广才气，天下无双，自负其能          负：负责
C．此五帝三王之所以无敌也。所以：……的原因
D．苏子愀然，正襟危坐。    危：危险


填空题
8、 微分方程y′-y=1的通解为______.


简答题
9、为什么说“教育救国论”是错误的。


10、马斯洛需要层次论是怎样划分的？

责编：cll  评论 纠错