问题 选择题
集合M={x|x=sin
3
,n∈Z},N={x|x=cos
2
,n∈Z},M∩N=(  )
A.{-1,0,1}B.{0,1}C.{0}D.∅
答案

M={x|x=sin

3
,n∈Z}={
3
2
,0,-
3
2
},

N={x|x=cos

2
,n∈Z}={0,-1,1},故M∩N={0},

故选C

完形填空
完形填空。
     When  you are going to leam English, you  should  first  pay  attention  to
listening  and  speaking. It's  the groundwork(基础)  of  reading and  writing.
You'd better         l     your best to speak while you are doing much listening.
Don't be   2        0f making mistakes. But be careful not to let them stop you
from improving your _ 3   .  While you are doing this, a good    4    is to keep a diary, write notes or letters.Then if you can, asksome others to go though   
    5   you have written and they will tell you where it is wrong.Many mistakes in your speaking will be   6    found when you write. Through correcting
mistakes, you can do better in learning English.
     If you are slow in speaking, don't    7    about it.  One of the helpful ways
is to read-read aloud or read to yourself.  The important thing is to choos      8    interesting to read, and it mustn't be too difficult for you.  When you are reading    9   this way, don't stop to _10    the new words if you can guess
their meanings or when they don't have anything to do with the sentences. But you can do that at some other time.
( )1.A. have    
( )2.A. sure    
( )3.A. English
( )4.A. start  
( )5.A.how      
( )6.A.happily  
( )7.A.talk    
( )8.A.something
( )9.A.by      
( )10.A.look at
B. send      
B. proud    
B. Chinese  
B. idea      
B.when      
B.easily    
B.fear      
B.everything
B.on        
B.look for  
C. make    
C. afraid  
C. Japanese
C. time    
C.what    
C.really  
C.worry    
C.anything
C.at      
C.look up  
D. try      
D. tired    
D. French    
D. way      
D.why        
D.slowly    
D.hurry      
D.nothing    
D.in        
D.look over  
   
实验题