As we all know ，communication has been playing an important part in people‘s As far as I know there are many kinds of communication， among them mail， telephone and computer are most commonly Writing letters is one of People use it to exchange information， ideas and Slow as the mail is， it is the cheapest means of The second kind is the By using telephone， people can hear each other even if they are far With the development of modern science and technology，the computer has come into Communication with computers is fast and In this way， people can send E-mail to each In a word， mail， telephone and computer all help to bring people all over the world
