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 2

21. Some form of ideal society is       

22.Books written by J. Verne are       

23.People enjoy       

24 Works of modern science fiction have       

25.Writers find it difficult       

A. a recurrent theme

B. to keep ahead of scientific advances

C. reading books of science fiction

D. political implications

E. a current theme

F. read worldwide