TV and Radio

I think that TV and Radio are the most powerful means of Mass Media.Almost all people watch TV or listen to the radio for several hours.People watch TV or listen to the radio to entertain themselves or to learn some information.TV and Radio do many things.TV and Radio include information to all tastes.And of course TV and Radio include effective advertisement.I prefer TV to Radio because I want to watch but not only listen to programs.Many people watch news.They reflect vital and present day problems, they raise questions and problems for discussion.And they affect various spheres of life.