Since policy decisions are business secrets of a firm,workers should not be informed of them

• A、True
  
  

• B、False
  
  

• C、Not Given
  
  

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.
  
  

Task 1

16.Paragraph  ①  

17.Paragraph  ② 

18.Paragraph  ③ 

19.Paragraph  ④ 

20.Paragraph  ⑤ 

A. Popularity of Science Fiction

B. Future Development

C. Classics of Science Fiction

D. Difficulty in Keeping Ahead of Scientific Advances

E. Its Origin/Past

F. Themes of Modern Science Fiction