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从2000个编号中抽取20个号码入样,采用系统抽样的方法,则抽样的间隔为

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题目:

从2000个编号中抽取20个号码入样,采用系统抽样的方法,则抽样的间隔为           

答案:

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小题1:A小题2:F小题3:D小题4:B小题5:E题目分析:文章介绍现在的人才流失的现象非常严重,分析这个现象存在的原因,它的危害和解决的方法。小题1:考查句意理解和上下文串联:根据上文:His parents may feel i...

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     Before my recent graduation,the last project of the term was called "Smile".The class was
asked to go out and   1   at three people and record their  2  .
     Soon after we were given the  3  ,my husband and 1 went out to McDonald's one cold
morning.We were standing in   4 ,waiting to be  5   ,when suddenly everyone around us
began to back away.A feeling of  6   rose up inside of me as I wondered what happened.
     As I   7   around I smelled a horrible dirty smell.Behind me were two poor homeless men.
As I looked at the short man close to me,he was smiling and his blue eyes searched for   8  .
     He said "Good day" as he   9 the few coins.The waitress asked him what they wanted.He
said,"Coffee is all,Miss." That was all they could   10 .
     I   11   felt the urge and actually hugged him.That was  12   I noticed all the eyes in the restaurant
were set on  13  .I smiled and asked the waitress for two more breakfast meals on   14 trays(托盘).
I then walked to the table that the men had   15   as a resting spot.I put the trays on the table and
laid my  16  on the short man's cold hand.He said "Thank you" with tears in his eyes.
     I  17  this story as my project.My instructor read it and said, "Can I  18  this with classmates?"
I nodded.At that moment I found something more  19  than a simple smile.I graduated with one of
the most important  20  I would ever learn-uncond.
( ) 1.A.stare    
( ) 2.A.experiences
( ) 3.A.task    
( ) 4.A.public  
( ) 5.A.served  
( ) 6.A.excitement
( ) 7.A.got      
( ) 8.A.pleasure
( ) 9.A.counted  
( )10.A.accept  
( )11.A.eagerly  
( )12.A.why      
( )13.A.me      
( )14.A.separate
( )15.A.booked  
( )16.A.meal    
( )17.A.made up  
( )18.A.believe  
( )19.A.cheerful
( )20.A.courses  
B.aim    
B.behaviors
B.degree  
B.turn    
B.called  
B.panic  
B.moved  
B.attention
B.begged  
B.afford  
B.probably
B.when    
B.him    
B.usual  
B.hidden  
B.money  
B.handed in
B.improve
B.practical
B.lessons
C.smile       
C.reactions  
C.information
C.road        
C.paid        
C.satisfaction
C.turned      
C.service    
C.saved      
C.drink      
C.hardly      
C.where      
C.my husband  
C.clean      
C.chosen      
C.bill        
C.went through
C.share      
C.reasonable  
C.skills      
D.shout            
D.feelings        
D.advice          
D.line            
D.checked          
D.disappointment  
D.stayed          
D.acceptance      
D.collected        
D.find            
D.really          
D.how              
D.the waitress    
D.large            
D.ordered          
D.hand            
D.put away        
D.evaluate        
D.valuable        
D.rules            
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