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　　Perhaps you have heard a lot about the Internet, but 　1　 is it, do you know? The Internet is a network. It uses the telephone to join millions of computers together around the world.

　　Maybe that doesn't sound 　2　. But when you have joined to the Internet, there are lots and lots of things you can 　3　. You can send e-mails to your friends, 　4　 they can get them in a few seconds. You can 　5　 do with all kinds of information on the World Wide Web (www.).

　　There are many different kinds of 　6　 now. They can be joined to the Internet. Most of them are small machines sitting on people's 　7　 at home but there are still many others in schools, offices and factories. These computers are 　8　 by people and factories, but no one really owns the Internet itself.

　　There are lots of 　9　 for you to go into the Internet. For example, your school may have the Internet: You can use it during 　10　 or free time. Libraries often have computers joined to the Internet. You are 　11　 to use it at any time.

　　Thanks to the Internet, the 　12　 is becoming smaller and smaller. It is possible for you to 　13　 at home with a computer in front, getting and searching the news you need. You can buy or 　14　 whatever you want by the Internet. But do you know 98% of the information on the Internet is in English? So what will 　15　 be like tomorrow?

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通读全文，了解大意，然后填写所空单词。(首字母已给出)

　　“Listen! What's that noise?” said David. Peter and Frank s　1　 up and listened. The three boys were having a rest. “The noise is f　2　 the fire station,” said Peter. “There must be fire s　3　.” He looked round at the sky q　4　, “I can't see smoke.”

　　The o　5　 two boys looked back towards the town, a　6　 then they all looked at the sky and trees round them. “There it is!” s　7　 Frank suddenly. He pointed to the column(柱) of blue smoke rising in the s　8　 about a mile away.

　　“C　9　 on,” said David excitedly(激动地). He picked up his b　10　 “Let's go and see what is happening. We might be able to h　11　.”

　　The boys j　12　 on their bikes and rode away quickly. Peter wondered(想知道) i　13　 the fire was n　14　 his uncle's shop. With their heads bending(弯) over the handle-bars(车把), the boys rode as hard as they c　15　. Soon they h　16　 the bell of a fire-engine(消防车) rising as it hurried a　17　. The sound quickly grew l　18　. The fire engine suddenly caught up w　19　 them and ran quickly towards the fire. W　20　 they got there, the fire had been put away.