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问题 单项选择题

田径运动会的4×100m接力比赛中，每个接力区的有效距离是（）。

A.10米

B.15米

C.20米

D.25米

答案

参考答案：C

解析：接力区的距离为20米。

完形填空
完形填空。
     The Browns   1   a building with two stories (层).   2   the first floor, there   3   a garage (车库), a living
room, a dining room and a kitchen. Mr. Brown has a new car. He often   4   it to work. Mrs. Brown is a nurse.
She often goes to work   5   , because the   6   is near to her house. On the second floor,   7   two bedrooms,
a study, a living room and a bathroom. The big bedroom is   8   Mr. and Mrs. Brown. The small one is for
their son, Jim. In the study, there is a computer. Jim usually plays games and downloads (下载) music   9   the
Internet. The Browns have a very nice garden behind their house. It has some tall trees and many flowers. Mr.
and Mrs. Brown work hard in their garden in   10   spare times. Now Mrs. Brown is getting some flowers in
the garden. She will put the flowers in the dining room and the living room.
(   ) 1. A. has     
(   ) 2. A. On     
(   ) 3. A. is     
(   ) 4. A. by     
(   ) 5. A. by her bike
(   ) 6. A. school  
(   ) 7. A. there is  
(   ) 8. A. for     
(   ) 9. A. to     
(   ) 10. A. his     		B. have   
B. In   
B. am   
B. drives 
B. on bike 
B. park  
B. there are 
B. with   
B. behind  
B. her               		C. in       
C. At        
C. are       
C. rides     
C. by bike     
C. company    
C. there be     
C. to      
C. in front of 
C. their                       		D. are             
D. Of              
D. will be         
D. in              
D. ride a bike     
D. hospital       
D. there have        
D. about           
D. from            
D. my            
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单项选择题

材料的耐水性可用（）表示。

A、亲水性

B、憎水性

C、抗渗性

D、软化系数
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