Michael 我写了06广东的作文 麻烦批改 谢谢非常Communication is quite significant both in the past and at present.Those days, through the letter ang public telephone people can communicate with their family and friends. Althoughthe letter is slow ,it is the cheapest means of communication. People keep track of others by public telephone sometimes. By telephone, people use sound to communicate with others and they can hear each other even if they are far apart.These days, with the development of living standards, mobile telephone become more and more popular. What amazing us is that through the Internet we can make many new friends. And the Internet can abroaden our horizon. E-mail being faster than letter , is fairly convient special when we have something urgent. If the mobile phone and the Internet weren't invented, people wouldn't exchange information, ideas and thoughts around the world. No one can deny that communication systems are playing an important role in our life.