北师大版高中英语必修第二册unit4 information technology 导读话题妙切入学案

UNIT 4 Information technology

If you have any trouble sounding condescending，find a Unix user to show you how it's done.

—Scott Adams

如果你不知道怎么样表现得高人一等，找个Unix用户，让他做给你看。

——斯科特·亚当斯

If you don't double­click me，I can't do anything.

—John Aniston

如果你不双击我，我什么也做不了。

——约翰·安妮斯顿

The Internet is so big，so powerful and pointless that for some people it is a complete substitute for life.

—Andrew Brown

互联网是如此之大，强大而无意义，以至于对某些人来说，它是生活的完全替代品。

——安德鲁·布朗

You should focus on the difficulty in acquiring useful information in spite of advanced information technology.

The recent decades has witnessed the remarkable development of information technology，which indicates we have entered an era of information.However，here arises an issue about how to dive into oceans of information and acquire the useful one.

Can you imagine a world without the Internet? It's surprising to think about it.

Now，China has more than 162 million Internet users，according to the China Internet Network Information Centre.This is the second highest number of user in the world after the United States.

Today，66% of Chinese “netizens” are teenagers.“They spend about thirteen hours every week online，” said Qian Hulin，an Internet expert.Doctor Song in Beijing Xuanwu Hospital said about 14% of Chinese netizens who are teens often lasted over ten hours to play online games.

The main reasons why teenagers surf the Web are to search for information，to communicate with others and to have fun.On the Internet，teenagers can find out almost anything.And surfing the Web can help students with their homework and widen their knowledge.

Li Dong，a teacher at No.41 Middle School in Shijiazhuang，likes her students to use the Internet.“When we talk in class，students who surf the Net usually know more background information than the others，” she said.

In addition，people can use the Internet to write letters or stories and send e­mails.Many teens keep in touch with their friends online.It is cheaper than phoning somebody far away and also much quicker.

[探索发现]

1．Which country has the largest number of Internet users in the world?

The United States.

2．Why do teenagers surf the Net?

They want to search for information，to communicate with others and to have fun.