Internet是一组全球信息资源的总汇。有一种粗略的说法，认为Internet是由于许多小的网络（子网）互联而成的一个逻辑网，每个子网中连接着若干台计算机（主机）。Internet以相互交流信息资源为目的，基于一些共同的协议，并通过许多路由器和公共互联网组成，它是一个信息资源和资源共享的集合。计算机网络只是传播信息的载体，而Internet的优越性和实用性则在于它本身。
近十年来，随着社会科技，文化和经济的发展，特别是计算机网络技术和通信技术的大发展，随着人类社会从工业社会向信息社会过渡的趋势越来越明显，人们对信息的意识，对开发和使用信息资源的重视越来越加强，使联入这两个网络的主机和用户数目急剧增加。
从目前的情况来看，Internet市场仍具有巨大的发展潜力，其应用涵盖从办公室共享信息到市场营销、服务等广泛领域。另外，Internet带来的电子贸易正改变着现今商业活动的传统模式，其提供的方便而广泛的互连必将对未来社会生活的各个方面带来影响。
未来的因特网不仅具有许多奇特的功能，还可以自动报警。当你家有小偷潜入时，未来的因特网就会立即做出反应，发出震耳欲聋的响声，这时候，你就会马上从睡梦中醒来，让小偷无法得逞。通过因特网，你可以弄清楚已经过去了的五万年的历史，却不一定能够知道未来五十年的事情。但有一点是可以肯定的：因特网会越来越 “神”。
拓展阅读：
With the development of science(科学) and technology(技术), more and more people are communicating with each other by e-mails. People are "talking" through computers. No matter how far away they are from each other, they can always communicate with each other readily. Sending emails has become an import ant way of communicating between people.
No doubt, email has a great deal of advantages(优点). The most import ant one is that sending emails is so fast that we needn't wait for a long time to get the message we want. We can exchange our feelings and ideas easily. And we can get a great amount of written information in no time. And compared with talking on the phone, sending emails can be much more economical, especially than making long-distance phone calls. Of course, convenience is also a merit. It's too troublesome(麻烦) to go to the post office to send a letter. As long as you have an email box and a computer, you can send an email anytime.
Nowadays, when more and more people have a computer and know how to send and receive emails through computers, communication emails is very fashionable. I am sure it will become the most popular way for people to keep in touch with each other in the near future.
1. What is the best title(题目) of the passage?
A. Sending an E-mail B. Receiving an E-mail
C. Opening an E-mail D. Closing an E-mail
2. The most import ant advantages is that sending emails is ______.
A. fast C. slow
B. busy D. bad
3. Communication emails are very ______.
A. long B. old C. fashionable D. short
4. Why are people communicating with each other by e-mails?
5. How can you send an email anytime?
答案：
1. A
解析：通读全文，理解大意，选A
2. A
解析：The most import ant one is that sending emails is so fast that we needn't wait for a long time to get the message we want. 给出答案，选A
3. C
解析：Nowadays, when more and more people have a computer and know how to send and receive emails through computers, communication emails is very fashionable. 一句指出答案，选C
4. Because sending emails is very fast, economical and convenience.
解析：通读第二段，总结其大意即为答案
5. As long as you have an email box and a computer, you can send an email anytime.
解析：As long as you have an email box and a computer, you can send an email anytime. 原句
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