问题 完形填空
完形填空
     The Western world has  always  been  divided  into  two  types  of people-the cool and the uncool.
It is a    1   that starts in school. The cool kids are good at sports. They are    2    with the opposite sex.
They are goodlooking and people want to   3    their style. They can do their homework but they don't  
  4    a big effort. That would not be cool.
     The uncool kids are in the   5    of the playground. They are very bright,  but they don't have great  
  6   skills and they are   7   at sports. When they are not programming computers or doing calculus(微
积分) in their heads, they are reading comic books and watching shows   8    the X Files.  They are 
   9  as the geeks(怪人).
      Here are the geeks. The geeks are taking over(占上风). Make friends with them now   10     they
will put virus in your computer and    11    your math homework to ruin. Geeks might not be popular
at school, yet they do pass their examinations, and they might not be too popular at university,  but
    12    good degrees.
     The most important    13     of the 21st century, computers and IT, has been at least partly created
by geeks. Geek heroes like Bill Gates   14   others to follow their examples. Being a geek is a way of
earning good money. And the creation of the Internet gave them a    15    of their own to work and play
in,  making them a global force.   16  ,   the effect of the geeks   17   popular culture has started a new
trend. It is now cool to be    18  . Geek culture is becoming an important part of general popular culture,
in which what you know is more important than   19  you look like.
     But there are also    20  . Geeks were often bullied (欺侮)or laughed at in school. Now a geek may
be your boss. Perhaps it is time for punishment.
( )1. A. division  
( )2. A. pleasant  
( )3. A. take      
( )4. A. have      
( )5. A. corner    
( )6. A. operating  
( )7. A. good     
( )8. A. like      
( )9. A. admired  
( )10. A. and     
( )11  A. put     
( )12. A. win      
( )13. A. industry  
( )14. A. excite  
( )15. A. room    
( )16. A. Somehow  
( )17. A. in      
( )18. A. rich    
( )19. A. how     
( )20. A. risks    
B. part          
B. popular      
B. act          
B. suffer        
B. team          
B. speaking      
B. active        
B. for          
B. thought      
B. so            
B. place        
B. take          
B. progress      
B. discourage    
B. world        
B. However      
B. of            
B. uncool        
B. that          
B. questions    
C. class      
C. crazy      
C. copy       
C. support    
C. group     
C. social    
C. hopeless  
C. such      
C. known      
C. or         
C. bring        
C. wish      
C. discovery
C. demand    
C. chance    
C. Though    
C. on        
C. attractive  
C. how much  
C. shortcomings
D. habit      
D. particular  
D. advance    
D. make        
D. center      
D. experimental
D. sharp      
D. as          
D. treated    
D. that        
D. take        
D. finish      
D. improvement
D. promise    
D. heaven      
D. Besides    
D. for        
D. handsome    
D. what        
D. chances    
答案

1-5: ABCDA  6-10: CCACC  11-15: CBAAB  16-20: DCBDA

选择题
填空题

现代社会中铜在电气、交通、机械和冶金、能源及石化工业、高科技等领域有广泛的应用。某铜矿石含氧化铜、氧化亚铜、三氧化二铁和脉石(SiO2) ,现采用酸浸法从矿石中提取铜,其工艺流程图如下。其中铜的萃取(铜从水层进入有机层的过程)和反萃取(铜从有机层进入水层的过程)是现代湿法炼铜的重要工艺手段。

已知:①Cu2O+2H+=Cu2++Cu+H2O;②当矿石中三氧化二铁含量太低时,可用硫酸和硫酸铁的混合液浸出铜;③反萃取后的水层2是硫酸铜溶液。回答下列问题:

(1)矿石用稀硫酸处理过程中发生反应的离子方程式为:________________________________(写其中1个)。

(2)“循环I”经多次循环后的水层1不能继续循环使用,但可分离出一种重要的硫酸盐晶体,该晶体的化学式是___________。若水层1暴露在空气中一段时间后,可以得到另一种重要的硫酸盐,写出水层l暴露在空气中发生反应的离子方程式________________________________。

(3)“循环II”中萃取剂是一类称作为肟类的有机化合物,如N-510、N-530等。某肟类化合物A的分子结构中仅含n1个-CH3、n2个-OH和n3个三种基团,无环状结构,若A的相对分子质量为116,上述基团连接时碳原子跟碳原子相连,则A的结构简式是______________________。

(4)“循环Ⅲ”中反萃取剂的主要成分是______________________________。