直流电促进骨折愈合时的最适电流A．5μA B．10μA C．15μA D．20μA

阅读理解。

     Everyone knows that exercise is important. We all need to exercise. Doctors say it's good for us. It

keeps body strong.    

     When the daytime comes, we must get up. This is the time for exercise. Exercise means doingthings

with the body. There're many ways to exercise. You can walk, run, swim, skate, or play ball games.

Make sure you exercise in the following ways : You have to like what you're doing.  Exercise enough but

not too much. It's good to exercise twice each week. Thirty minutes each time is enough. Try all kinds of

things until you find one, two or three sports that are suitable for you.     

     Exercising can be fun. Friends can exercise together at a fitness center. and they can play sports

together. How do you exercise?      

1. In order to keep healthy, everyone should                regularly.        

A. drink                      

B. relax        

C. exercise                    

D. work    

2. Which of the following sports can't we find in the passage?        

A. Fishing.                    

B. Running.        

C. Swimming.                  

D. Walking.    

3. What does exercise mean?        

A. It means doing things with the body.        

B. It means studying.        

C. It means doing lessons.        

D. It means playing.    

4. What can exercise do to the body?        

A. It can make the body strong.        

B. It can make the body healthy.        

C. It can make us sleep more.        

D. Both A and B.    

5. The phrase "fitness center" in the passage means "               " in Chinese.        

A. 减肥中心              

B. 健中心        

C. 购物中心              

D. 医疗中心

有关尖锐湿疣，下列说法错误的是( )

A．尖锐湿疣病原体为HPV，以6、11亚型最常见
B．性行为是其主要传播途径
C．好发部位以 * * 最常见
D．可垂直传播感染胎儿或新生儿
E．以局部物理治疗为主

南极洲特有鸟类是[ ]

A、企鹅

B、蜂鸟

C、鸵鸟

D、鹦鹉

补体结合试验中，补体主要来自于（）

A.家兔 

B.绵羊 

C.马 

D.小牛 

E.豚鼠

我国在1988年、1993年、1999年、2004年先后通过宪法修正案，调整、充实1982年宪法的内容，使这部国家根本大法能够适应不断发展变化的社会情况”，这说明中国

A．现代化发展使宪法逐步完善

B．形成以宪法为核心的法律体系框架

C．确立“依法治国”方略

D．宪法是国家的根本大法