天津的一项调查发现，98%的高校生和92%的小学生都把周末用来做作业。请根据这个 调查说明你的看法，写一篇150词左右的英文短文。

What field of television is intended for specific groups?

• A、Broad-based. 
  
  

• B、Reconstituted.
  
  

• C、Traditional.
  
  

• D、Non-broadcast.
  
  

Which of the following is NOT mentioned in the passage as a function of electronics in television transmissions?

• A、The conversion of an image into electronic impulses.
  
  

• B、The sending of impulses through a wire cable.
  
  

• C、The changing of one image into another image.
  
  

• D、The feeding of impulses into a receiver.