问题 多项选择题

若大豆的需求弹性系数为0.2,在其他条件不变的情况下,关于大豆价格和需求量的说法,正确的有()。

A.大豆价格上涨1%,则大豆需求下降0.2% 

B.大豆价格下降1%,则大豆需求增加0.2% 

C.大豆价格上涨1元,则大豆需求量下降20% 

D.大豆价格上涨1元,则大豆需求下降20% 

E.大豆价格上涨0.1%,则大豆需求下降2%

答案

参考答案:A, B

解析:本题考查第五章农产品需求弹性的含义,需求弹性为农产品需求量对农产品价格变动的反应程度,需求弹性系数=需求数量变动的百分比/农产品价格变动的百分比,表示农产品价格没变动1%,农产品需求量变工的百分比。

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     When I was young, I was very embarrassed (尴尬) to be seen with my father. He was disabled and very
short, and he  1  with great difficulty. When we walked together, with his hand on my arm for balance, people
would  2 . I would be nervous about the unwanted  3 .
     It was  4  for us to walk in step, and because of that, we didn't say much as we went  5   But as we started
out, he always said," You set the pace (步幅). I will try to follow you."
     Our usual walk was to or from the subway, which was how he got to work. He never missed a day, and
would  6  it to the office even if others could not.
     He  7  talked about himself as an unhappy man, nor did he show any envy (嫉妒) of the more fortunate
or able. What he  8  in others was a "good heart,"  9  if he found one, the owner was good enough for him.
     He has been gone many years now. I wonder if he felt I didn't  10  to be seen with him during our walks.
If he did, I am sorry I never told him how  11  I was. I think of him when I complain about life, when I envy
another's good fortune, and when I don't have a "good heart".
     At such times I put my hand on his arm to get back my  12 , and say, "You set the pace. I will try to
follow you."
( )1. A. walked    
( )2. A. listen    
( )3. A. invitation
( )4. A. possible  
( )5. A. along     
( )6. A. try       
( )7. A. only      
( )8. A. thought of
( )9. A. and       
( )10. A.care      
( )11. A. proud    
( )12. A. luck     
B. spoke        
B. look         
B. information  
B. important    
B. away         
B. get          
B. never        
B. learned about
B. but          
B. enjoy        
B. nervous      
B. balance      
C. played     
C. talk       
C. expression 
C. difficult  
C. alone      
C. make       
C. once       
C. depended on
C. now        
C. hate       
C. sorry      
C. chance     
D. studied  
D. stand    
D. attention
D. necessary
D. around   
D. keep                                         
D. also     
D. looked for
D. then     
D. like     
D. sad      
D. purpose  
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