问题 选择题

下列比例尺中,最大的是[ ]

A、1:500000

B、五百万分之一

C、

D、图上1厘米,代表实地距离40千米

答案

答案:C

完形填空
完形填空。
     Villagers are much healthier than people who live in towns. One reason for this is country air is fresher
than the air in smoky  1 . The villagers breathe fresh clean air all day in the fields, but the air the towns men 
 2  is always full of smoke and dust.
     We cannot live without air. If we are stopped from breathing  3  for five minutes, we will die. Bad air
means bad health and certain kinds of  4 , which may kill us in the end,  5  they may not kill us at once.
     We all  6  what unpleasant feelings we get if we stay a long time in a closed, crowded room. After a time,
we begin to feel very  7 . and can hardly keep our eyes open. The longer we stay, the worse we feel. How
nice it is when we get  8  into the fresh air outside!
    We must keep our windows open, so that the  9  in our house is always fresh, and we should breathe as
much as we can in the open air. For people who breathe  10  air for a long time often get very ill and die of
lung diseases.
( )1. A. cities
( )2. A. eat  
( )3. A. as   
( )4. A. death
( )5. A. so   
( )6. A. know 
( )7. A. hot  
( )8. A. up   
( )9. A. air  
( )10. A. dry 
B. fields   
B. smell    
B. even     
B. illnesses
B. since    
B. fear     
B. sleepy   
B. out      
B. furniture
B. clean    
C. factories   
C. breathe     
C. still       
C. accidents   
C. though      
C. expect                      
C. lonely      
C. down        
C. environment 
C. bad         
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