问题 单项选择题

以下哪个是网络安全威胁的主要来源之一()

A、网络诈骗

B、虚构产品

C、信息泄露

D、拒绝服务攻击

答案

参考答案:D

完形填空
完形填空。
      Every year many people get hurt or die in traffic accidents. People make traffic   1   for some reasons, so we
must obey them. Different countries have different traffic rules. In China, all the cars and buses keep on the   2  
of the road.   3   we cross the road, we must   4   and look at both sides (first left then right). But in England,
the traffic is on the left. When you cross the road, you should look   5   first or you may be in an accident.
      People have to obey many traffic rules. You must walk   6   the sidewalk. If you like riding a bike, don't ride
in the middle of the road   7   run through red traffic lights (闯红灯). When you ride a bike with a friend,   8   
look around and talk. When you drive, you must not drive too fast and you should pay attention to (注意) the
traffic   9  . For example (例如), when you see, you mustn't make a U-turn. It's good  10   children and old
people to cross the road. Remember to (记住) think about others.
( ) 1. A. cars  
( ) 2. A. middle
( ) 3. A. After 
( ) 4. A. stop  
( ) 5. A. left  
( ) 6. A. at    
( ) 7. A. and  
( ) 8. A. not  
( ) 9. A. sign  
( ) 10. A. help  
B. rules    
B. left      
B. Before    
B. run      
B. right    
B. to        
B. but       
B. don’t          
B. map      
B. helping 
C. policeman  
C. right    
C. Because  
C. walk        
C. traffic    
C. on          
C. so          
C. isn’t            
C. ticket    
C. to help  
D. maps         
D. back         
D. So           
D. listen       
D. buildings         
D. for          
D. or           
D. aren’t      
D. meaning      
D. helpful    
选择题