问题 单项选择题 案例分析题

患者女,23岁。凹面型,面下1/3正常,前牙反,磨牙中性关系,上颌尖牙唇向高位,拥挤9mm。上下前牙唇倾度正常,下牙列无拥挤。侧位片测量显示上颌骨发育不足,ANB-2°。4个第三磨牙牙胚存在

若该患者确定是固定正畸治疗,治疗方案可能为下列哪项().

A.不拔牙矫治

B.拔除2个上颌双尖牙

C.拔除4个第一双尖牙

D.拔除双侧上颌第二双尖牙和下颌第一双尖牙

E.拔除4个第二双尖牙

答案

参考答案:B

完形填空
完形填空。
     Tourism wasn't as important as it is today in China. In the past,    1   people could travel on holiday to other countries. But today more and more Chinese travel     2  
they now are becoming richer and have enough      3   for travel. Special planes for
tourists     4   travel less expensive than ever before. Not all people travel for   5  
reason. Most people enjoy seeing countries that are different from their own. They
also like to    6 new people and eat new food.
    Tourism causes many   7  in Chinese people's lives. People   8   new hotels and
restaurants and   9   guides to show visitors interesting places.  10   tourists visit China every year. Tourism is clearly a big business.
( )1. A. few      
( )2. A. if        
( )3. A. energy    
( )4. A. allow    
( )5. A. the same  
( )6. A. know      
( )7. A. troubles  
( )8. A. buy      
( )9. A. attract  
( )10.A. Millions  
B. a few      
B. unless      
B. time        
B. make        
B. same        
B. understand  
B. changes    
B. sold        
B. afford      
B. Millions of
C. no                        
C. because                  
C. countries                  
C. allows                    
C. one                        
C. find                      
C. challenges                
C. finish                    
C. train                      
C. More than ten millions of  
D. many                    
D. though                  
D. places                  
D. makes                  
D. different              
D. meet                    
D. accidents              
D. build                  
D. choose                  
D. More than ten million of
      
单项选择题