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　　【参考范文】

　　In the past century, people's ways of communication have changed greatly.

　　Before the 19th century, people kept in touch with others by writing letters. Although it takes a long time for people to receive a letter from their relatives or friends, it can help to keep people who live far away connected. With the science and technology developing rapidly, the telephone and mobile phone were invented, which made it more convenient for people to communicate with others. The mobile phone makes it possible for us call our friends wherever we are at any time.

　　Right now more and more people would like to chat with friends through the Internet. So science and technology is making our life more enjoyable

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