(5) Think about how many ways there are for you to communicate today. You can send a letter or pick up the phone and make a call. But today, one of the most popular ways to communicate is called instant messaging (IM). In any instant messaging system, you type a little text message on your computer, press the “Send” button, and your message instantly shows up on your friend’s screen. But how does it work? Actually, the whole process is very cool. In the 1980s, you could sit down at a computer at any big university. Up to 100 people would be logged in and share the computer because these computers were very expensive. You could type a command to send an instant message to anyone logged in the same computer. It felt like everyone was connected together no matter where they were sitting. Today, you can communicate with anyone in the world. All you need is an instant messaging program installed on your computer. There are many programs to choose from. AOL’s instant messenger is probably the most popular right now. MSN has one. Google has Google Talk. 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. 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 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. C.Because few people knew how to use computers. D.Because computers at that time were too large. 3.From the passage we can see that “Google Talk”______. A.is a kind of search engine B.refers to a computer company C.is a famous website D.is an IM program 4.The underlined “it” in the last paragraph most probably refers to“______ ”. A.a server B.an IM program C.a computer D.the Internet