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问题 选择题

将放在冰箱中经过冷藏的装有水的矿泉水瓶取出后放置在空气中，发现外表面会有小水滴生成，这些小水滴是通过怎样的物态变化过程产生的（　　）

A．汽化

B．液化

C．凝华

D．熔化

答案

空气中的水蒸气遇到经过冷藏的冷的矿泉水瓶发生液化，形成小液滴．属于液化现象．

故选B．

完形填空
完形填空。
       China is the home of tea,   1   has more than 4,000 years of history. People in China drink tea daily.   2   
the three major drinks — tea, coffee and cocoa, tea is drunk by   3   people in the world. Tea from China,
along   4   silk and porcelain, began to be known by the world over a thousand years ago and has been an
important Chinese export   5  . 
       Tea leaves   6   mainly in the area south of the Yangtze River, in the provinces of Zhejiang, Jiangxi and
Fujian, because of the mild   7   and rich soil there. Longjing, Wulong, Pu'er and Tieguanyin are all   8   kinds
of tea.
       Over the past centuries, Chinese people   9   their unique tea culture, which includes tea planting, tea-leaf
picking, tea making, tea drinking and so on. Tea is   10   a popular topic which is often mentioned in dances,
songs, poems and novels.
( ) 1. A. who            
( ) 2. A. In             
( ) 3. A. the number of          
( ) 4. A. between        
( ) 5. A. at that time   
( ) 6. A. produce        
( ) 7. A. climate        
( ) 8. A. interesting    
( ) 9. A. had developed  
( ) 10. A. too           		B. which           
B. For             
B. a number of             
B. with            
B. from now on     
B. are produced    
B. weather         
B. important       
B. have developed        
B. as well        		C. where             
C. Of                
C. a large number of      
C. except            
C. since then        
C. make              
C. condition         
C. famous            
C. developed               
C. either           		D. when                   
D. By                     
D. the largest number of     
D. besides                
D. since now              
D. are made               
D. environment            
D. normal                 
D. are developing         
D. also                 
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简述小料球快速煅烧技术？
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