问题 选择题

在医院病房外就能闻到特殊气味,这说明(  )

A.分子质量很小

B.分子是可分的

C.分子间有间隔

D.分子是不断运动的

答案

在医院病房外就会闻到特殊气味,是因为药物中含有特殊气味的分子运动到了空气中,进入鼻子中的缘故.说明了分子在不断地运动,和分子小,分子可分、分子间有间隔没有直接关系.

故选D.

完形填空
阅读短文,从各题所给的四个选项中,选出 一个正确答案。
     Paul received an expensive car from his brother as a Christmas present. On Christmas Eve Paul
saw a dirty and poorly-dressed boy walking     1    his shining car. "Is this your car, sir?" he asked.
     Paul told him how he got the car and the boy was     2    . "You mean your brother gave it to
you and it didn't cost you anything? Boy, I wish..." he said, without    3     his sentence. Paul thought
the boy wished he had a     4     like that. But what the boy said surprised Paul greatly. "I wish," the
boy went on, "that I could be a brother like that. "
     Paul looked at the boy in surprise. He invited him to take a     5    in his car and the boy agreed happily.
After a short ride, the boy turned and with his eyes     6    , said, "Sir, would you mind driving in front of
my house?"
     Paul smiled a little. He thought the boy wanted to     7    his neighbors that he could ride home in
a big car. But Paul was wrong     8   . The boy ran back into his house, and after a short while came
back with his disabled brother in his arms.
     He     9   him down on the step and pointed to the car. "There  he is, buddy, just like what I told you
upstairs. His brother gave it to him for Christmas and it didn't   10     him a cent. Some day I'm going
to give you one just like it. "
(     )1. A. inside   
( )2. A. interested
(     )3. A. finishing
(     )4. A. car      
(     )5. A. seat     
(     )6. A. watering 
(     )7. A. frustrate
(     )8. A. either    
(     )9. A. sat      
( )10. A pay       
B. around      
B. excited     
B. understanding
B. brother     
B. rest        
B. shining     
B. shock       
B. too         
B. dropped     
B. cost        
C. through 
C. satisfied
C. hearing 
C. sister  
C. ride    
C. wondering
C. remind  
C. again   
C. let     
C. bring   
D. across  
D. surprised
D. checking
D. family  
D. picture 
D. shaking 
D. show    
D. instead 
D. kept    
D. return  
多项选择题