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问题 单项选择题

CT扫描中，边缘增强滤过的作用是（）

A.增强所显示图像组织结构的边缘

B.只增强组织中血管的边缘

C.只增强病灶的边缘

D.只增强高密度组织结构的边缘

E.低密度的组织结构都被去除

答案

参考答案：A

选择题
把相应的问句与答句搭配起来。
( )1. Do you like hot dog?                                    
( )2. Would you like some tea?                                  
( )3. What would you like?                                     
( )4. How much for one donut?                                 
( )5. How many bottles of pop?                                
( )6. Are you thirsty?            		a. I'd like a hamburger.  
b. Two yuan.  
c. Yes. I'm thirsty. 
d. Yes. I like it.         
e.  No, thanks.                                                       
f. There are fifteen.        
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选择题

.

Many wild animals in the world _____ , so we must take measures to protect them.

A．are dying out

B．have died out

C．died out

D．die out
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