A.It reflects the audience reaction to their programs.B.It has some close connection with the price for advertising time.C.It keeps a record of what the audience have watched.D.It helps to improve the quality of the programs.
A.It reflects the audience reaction to their programs.
B.It has some close connection with the price for advertising time.
C.It keeps a record of what the audience have watched.
D.It helps to improve the quality of the programs.