问题 解答题

南方大地震为四川人民带来巨大灾难,学校也受到了严重破坏,为了让灾区的孩子们能尽快在一个舒适、优美的环境里读书.某对口支援单位承担了重建学校的任务,为了美化校园.计划在一块长19米.宽15米的长方形空地上新建一块长方形花圃,并要求花圃四周空地的宽度一样.计划新建花圃的面积为77米2,问花圃的长和宽是多少米?

答案

设四周空地的宽度为x米,

依题:(19-2x)(15-2x)=77,

即:x2-17x+52=0

解之,x1=4,x2=13(舍去),

花圃的长为19-2×4=11(米)

宽为15-2×4=7(米).

答:矩形花圃的长为11米,宽为7米.

完形填空
完形填空。
                                                       Sports in America
     In many parts of the world, there are four seasons: spring, summer, fall and winter. In the USA, there
are only three: football, basketball and baseball. If you want to know  1 , just have a look at what people
are playing.
     Sports are an important part of American culture. Throughout their school  2 , Americans learn to play
many sports. All students take P.E. classes in school. Some try out for the school teams,  3  others join
school sports leagues. For many people in the USA, sports are not just  4 . They're almost a religion (宗教). 
  5  sports fans buy expensive tickets to watch their favorite teams and athletes  6  in person. Other fans
watch games at home, glued to their TV sets. The most devoted (投入的) sports fans  7  a game.
( )1. A. what is season
( )2. A. live          
( )3. A. while         
( )4. A. for funny     
( )5. A. Thousands of  
( )6. A. to play       
( )7. A. never lose    
B. what season is  
B. life            
B. until           
B. for fun          
B. Thousand of     
B. played          
B. have never lost 
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C. when             
C. for interesting  
C. Thousand                                 
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C. never miss       
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