问题 单项选择题 A1/A2型题

牙骨质由牙胚的哪部分形成()

A.成釉器

B.牙蕾

C.牙囊

D.牙板剩余

E.牙 * *

答案

参考答案:C

完形填空
完形填空。
     But   1   a few of them are very   2  . English is one of these. Many, many people use it, not only in
England and the U. S. A,  but in other parts of the world. About 200, 000, 000 speak it as their
own language. It is difficult to say how many people are learning it as a   3   language. Many millions
are   4   to do so.
     Is it easy or difficult to learn English? Different people may have different   5  . Have you ever 
  6   the ads of this kind in the newspapers or magazines?
     'Learn English in six month, or your   7   back ...'  'Easy and funny? Our records and tapes 
  8   you master your English in a month.   9   the first day your   10   will be excellent. Just send ..." Of
course, it never   11   quite like this.
     The only language that seems easy to learn is the mother tongue. We should   12   that we all
learned our own language well when we were   13  . If we could learn English in the same way, it
would not seem so difficult.   14   what a small child does.  He listens to what people say. He tries
what he hears. When he is using the language, talking in it, and   15   in it all the time, just imagine
how much   16   that gets!
     So it is   17   to say that learning English is easy, because a good command of English   18   upon a lot of practice. And practice needs great effort and   19   much time. Good teachers, records,
tapes, books, and dictionaries will   20  . But they cannot do the student's work for him.
( )1. A. not    
( )2. A. difficult
( )3. A. native  
( )4. A. learning
( )5. A. questions
( )6. A. found  
( )7. A. knowledge
( )8. A. make    
( )9. A. From    
( )10. A. spelling
( )11. A. happened
( )12. A. know  
( )13. A. students
( )14. A. Imagine
( )15. A. using  
( )16. A. time  
( )17. A. hard  
( )18. A. depends
( )19. A. uses  
( )20. A. do    
B. quite  
B. important
B. foreign
B. enjoying
B. problems
B. watched
B. time    
B. help    
B. On      
B. grammar
B. know    
B. remember
B. children
B. Mind    
B. thinking
B. money  
B. easy    
B. tries  
B. takes  
B. work    
C. only    
C. necessary
C. useful  
C. trying  
C. ideas    
C. noticed  
C. money    
C. let      
C. Since    
C. English  
C. seemed  
C. understand
C. babies  
C. Do      
C. trying  
C. language
C. funny    
C. has      
C. gets    
C. help    
D. very        
D. easy        
D. mother      
D. liking      
D. answers      
D. known        
D. English      
D. allow        
D. After        
D. pronunciation
D. felt        
D. think        
D. grown-ups    
D. Think of    
D. practicing  
D. practice    
D. silly        
D. takes        
D. costs        
D. master      
单项选择题