问题 名词解释

卯酉圈

答案

参考答案:

过椭球面上一点的一个与该点子午面相垂直的法截面同椭球面相截形成的闭合的圈。

完形填空
完形填空。
     We are busier now. We have  more lessons to take, more   1   to finish but less time to exercise.  Exercise is good for both our body  2   mind. It can
keep our body healthy and    3  .It can also help us relax  4   we feel stressed.
In fact, we don't need too much time and money to   5   . Exercise can be
everywhere if we like. For   6   , we can climb stairs instead of ( 代替) using
lifts; we can walk or  7  our bike to school instead of asking our parents to
drive us; we can walk while talking with a friend instead of just sitting at the
table.
     There are many   8   of exercise. Running, swimming, dancing,skating and playing balls are all  9  exercise. Exercise is a great   10   for us to keep
healthy and make new friends. So let's do exercise ifwe have time.
( )1. A. housework
( )2. A. and      
( )3. A. funny    
( )4. A. how      
( )5. A. work    
( )6. A. district
( )7. A. ride    
( )8. A. facts    
( )9. A. good    
( )10.A.culture  
B. accessory
B. or        
B. young    
B. when      
B. exercise  
B. form      
B. drive    
B. ideas    
B. awful    
B.bridge    
C. homework
C. but      
C. fantastic
C. why      
C. eat      
C. exam    
C. bring    
C. kinds    
C. tired    
C. menu    
D. activities
D.so        
D. strong    
D. what      
D. play      
D. example    
D. sell      
D. things    
D. pretty    
D.way        
单项选择题