问题 填空题
1.25×8.8=1.25×8+1.25×0.8是运用了(  )
A.乘法交换律B.乘法结合律C.乘法分配律
答案

1.25×8.8,

=1.25×(8+0.8),

=1.25×8+1.25×0.8,

=10+1,

=11;

所以这是运用了乘法分配律进行简算.

故选:C.

完形填空
完形填空。
Dear Zhou Jun,
     Thank you for your letter. It's great to   1   you again. How's your study? I hope you can   2   all your
exams to get into a high school.
     When I got your last letter, I was very   3   volunteering (志愿活动) in Ghana. So I had no time to write
back. I just got back home last week. I've got so much to   4   you! It was my first time to be a volunteer.
  5   two months there, teaching in a very poor school. When I arrived, there were only six classes and
three   6  !
     I had my own   7  . There were twenty children in it. I could teach them anything I wanted. They love
me very much. I was so   8   in Ghana. I slept in the same house with some of the children in my class.
That was a (an)   9   experience for me! I'd love to  10  to Ghana in a few months to see them again.
     Well, good luck with your exams!
Ben
( )1. A. hear from  
( )2. A. fail       
( )3. A. surprised  
( )4. A. help       
( )5. A. spent      
( )6. A. children   
( )7. A. letter     
( )8. A. welcome    
( )9. A. old        
( )10. A. run away  
B. worry about    
B. pass          
B. tired         
B. beat          
B. played        
B. students      
B. exam          
B. rich          
B. unlucky       
B. go back       
C. agree with    
C. take      
C. busy      
C. believe   
C. travelled 
C. parents   
C. class     
C. shy       
C. new       
C. ring up   
D. look for              
D. do         
D. angry      
D. tell       
D. drove      
D. teachers   
D. school    
D. sad        
D. boring     
D. fall down  
选择题