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问题 单项选择题

气候变化是由（）的变化引起的。

A.生态系统 

B.环境系统 

C.水系统 

D.气候系统

答案

参考答案：D

补全对话，情景问答
完形填空
Sonia: Hi!
Mary:   1  !
Sonia: Is this your notebook? There isn't a name on it.
Mary: No,   2  .
Sonia: Are you sure?  3   is your notebook?
Mary: Oh, it's on the desk.
Sonia: Is this   4   notebook?
Mary: I think it is   5   notebook. Let's ask   6  . Maria !
Maria:   7  ?
Mary: Is this your notebook?
Maria: Let me see. Oh, yes, it is   8   notebook.
Mary: Oh,  good,  but please write down your name on it. By the way, where is the teachers' office?
Maria:   9   way, please.
Mary:   10   .
( )1. A. OK          
( )2. A. this is      
( )3. A. Who          
( )4. A. Sonia's      
( )5. A. she          
( )6. A. her          
( )7. A. OK          
( )8. A.I            
( )9. A. This        
( )10. A. Excuse me   		B. Hi        
B. it isn't  
B. What      
B. Mary's    
B. her      
B. him      
B. Yes      
B. me        
B. Its      
B. Sorry     		C. How are you  
C. this isn't    
C. How          
C. Maria's      
C. him          
C. she          
C. No            
C. my            
C. His          
C. Thank you     		D. Good morning      
D. it is                
D. Where                
D. your                  
D. his                  
D. he                    
D. Hi                    
D. mine                  
D. Here's                
D. It's good            
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单项选择题

患者，缺失、可摘局部义齿修复，及之间放隙卡、型卡，义齿完成后，固位好，咬合好，无压痛，戴用1年后，义齿从折断

处理方法是（）

A．游离端组织重衬

B．人工牙减径、减数

C．折断处重新塑料粘固

D．重新可摘局部义齿制作

E．折断处修理，游离端重衬
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