问题 问答题 简答题

影响年龄分布的因素是什么?

答案

参考答案:

影响年龄分布的因素:

①人群免疫力可影响疾病的年龄分布。

②生活条件不同,可以影响疾病的年龄分布。

③部分非传染性疾病的发病率随年龄增长而增高。

完形填空
完形填空。
      A man was exploring some caves by the seashore.In one cave he __1__a bag of hardened
clay balls.It seemed that someone had __2__some clay and     baked  the balls in the sun.They
didn't look like __3__ things,but they interested him,__4__ he took the bag out of the cave with him.
      As he walked along the beach he __5__ the clay balls one at a time out into the ocean as far as
he could.He thought __6__ about it until  he dropped one of the  balls  and it cracked open on a
rock.__7__was a beautiful,precious stone.__8__,the man  started  breaking open the  remaining
clay balls.__9__contained a similar treasure.He found thousands of dollars'worth of  jewels in the
20 or so clay balls he had __10__,and then it struck him:__11__thousands of dollars in treasure,he
could have had tens of thousands,with the 50 or 60 clay balls with their __12__treasures which were
now in the ocean.He just __13__the chance.
      Sometimes it's like that with __14__.When we look at a person,we usually only see "the outside
clay shell".It isn't always beautiful or shining,so we __15__ the person;we see him as less important
than someone more beautiful or more __16__.But we haven't taken the time to look for the __17__
inside that person.If we spend the time getting to know that person,the clay will __18__ and the brilliant
jewel will shine.We are __19__ made,not only with our physical bodies,but also with our spiritual selves,which are sometimes hidden __20__ others by the "earthen shell"
( )1.A.searched  
( )2.A.rolled  
( )3.A.dangerous  
( )4.A.while  
( )5.A.pushed  
( )6.A.little  
( )7.A.Out  
( )8.A.Moved  
( )9.A.Each  
( )10.A.given  
( )11.A.In case of  
( )12.A.hidden  
( )13.A.forgot  
( )14.A.money  
( )15.A.pity  
( )16.A.warm-hearted  
( )17.A.clay  
( )18.A.come off  
( )19.A.normally  
( )20. A.from  
B.lost        
B.pressed      
B.valuable    
B.though      
B.put          
B.long        
B.Inside      
B.Satisfied    
B.Much        
B.taken        
B.In return for
B.obvious      
B.missed      
B.life        
B.blame        
B.honest      
B.treasure    
B.break away  
B.gradually    
B.behind      
C.made  
C.dug  
C.annoying  
C.if  
C.threw  
C.hard  
C.Next  
C.Worried  
C.None  
C.left  
C.Instead of  
C.well-known  
C.abandoned  
C.people  
C.ignore  
C.famous  
C.ball  
C.run out  
C.wonderfully  
C.with  
D.found        
D.cut          
D.ordinary      
D.so            
D.pulled        
D.well          
D.Below        
D.Excited      
D.Few          
D.dropped      
D.Because of    
D.question able
D.faced        
D.friends      
D.hate          
D.stylish      
D.shell        
D.dry up        
D.expensively  
D.by           
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