When you're ready，you create an account.Next，you need to figure out the IM names your friends use.Add their IM names to your IM program.Click on the friend you want to talk to and then type away.When you click “Send”，your friend gets the message instantly.

　　But behind the scenes，amazing things are happening.Your IM program is communicating with a computer，called a server，which could be just down the road or even in some other city.All your friends' computers are communicating with a server，too.Your computer is constantly chatting with it

　　to make everything happen.The network called the Internet makes it all possible.

　　【语篇导读】　本文是一篇说明文，主要介绍了目前网上最流行的交流方式——即时通信。

　　1．What could be the best title of the passage?

　　A．Different Ways of Communication

　　B．The Easiest Way to Talk to a Friend

　　C．How to Send Instant Messages

　　D．Development of Communication

　　解析　主旨大意题。根据第一段的后两句及整篇文章的内容可知，该文介绍的是如何发送即时消息，所以选C项作标题最合适。

　　答案　C

　　2．Why did so many people share a computer in the 1980s?

　　A．Because they wanted to be connected to each other.

　　B．Because few people could afford to buy computers.

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