1、Unit 4Cyberspace现在，中国有一亿六千多万网民，其中66%是青少年。你知道人们上网做什么吗？你能够想象得到没有网络的世界会是什么样子吗？ Can you imagine a world without the Internet? Its 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 largest number o
2、f users in the world after the United States.Today，66% of Chinese “netizens (网民)” 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
3、to play online games.The main reasons why teenagers surf the Net 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 Net can help students with their homework and widen their knowledge.Li Dong，a teacher at No
4、.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，send emails and chat.Many teens keep in tou
5、ch with their friends online.It is cheaper than phoning somebody far away and also much quicker.1search for寻找，搜寻2widen v.(使)变宽；(使)扩大3background n.背景4keep in touch with.与保持联系1Which country has the largest number of users in the world? 2Why do teenagers surf the Net? 【答案】1.The United States.2.They wan
6、t to search for information，to communicate with others and to have fun.Section Warmup & Tomorrows WorldPreparing根据提示写出下列单词1gallery n画廊2global adj.全球的，全世界的3artificial adj.人造的4climate n.气候5flood n.洪水，水灾vt.& vi.淹没6reality n.真实，现实7affect vt.影响8crime n.犯罪；罪行9criminal n.罪犯10terrorist n.恐怖分子11attack n& vt.
7、进攻，攻击12crash vt.(汽车，飞机等)撞毁；坠毁13offer n& vt.提供，提议14entertainment n.娱乐；款待15disappear vi.消失16harm vt.& n.伤害，损害17obvious adj.明显的，显而易见的看单词 学构词：前缀dis表示“不，否，非”，如：dislike不喜欢；dishonest不诚实的；disagree 不同意；disappoint失望；disadvantage不利条件；disappear从视线中消失；discourage 使失去勇气，劝阻；disabled 残疾的，丧失能力的等。 根据提示补全下列短语1make up组成
8、；编造；弥补；化妆2come true变成现实；实现3find out发现，查出，弄清楚4in the last thirty years在最近30年里5be optimistic about.对乐观6get into进入；陷入；染上(坏习惯)7take immediate action立即采取行动8believe in信任，信仰9as if/though好像；似乎10in chaos混乱根据提示补全下列教材原句1In the last thirty years，the Internet has grown rapidly.在过去的三十年里，网络已经迅速地发展起来。2.it is clear
9、that we are going to see a huge growth in shopping on the Internet.很显然，我们将会看到网上购物的巨大增长。3Some experts see our future in virtual realitythe use of computers with sounds and pictures that make you feel as if you are in a real situation.一些专家用虚拟现实的眼光看未来是计算机通过声音和图像模拟现实，以使人感到仿佛置身于一个真实的空间。阅读P8教材课文，选择最佳答案1.
10、From Paragraph One，we know Athe Internet came into the world in 1980sBmore and more computers will be connected to the InternetCpeople will lose interest in the Internet somedayDone can have several computers at home2Some experts are pessimistic about the future.They are worrying that Athe growth wi
11、ll slow downBit will cost people a lotCthe world wont be safeDcomputers will take the place of humans3Peter Anderson thinks Apeople will be able to work in a virtual worldBtelevision will disappearCthe mail service will disappearDterrorists may “attack” the worlds computers4Which of the following is
12、 NOT mentioned in the passage?AShopping in a virtual supermarket.BStudying in a virtual school.CCommunicating with others by chatting tools.DGetting all kinds of information from the Internet.【答案】14BCAC阅读P8课文，在空白处填入适当的内容(1个单词)或括号内单词的正确形式The Future of CyberspaceIn the last thirty years，the Internet 1
13、. (grow)rapidly，and this growth is 2. (clear)going to continue.Some experts are pessimistic 3. the future.One worry is crime in cyberspace.In the future，terrorists may“attack”the worlds computers，cause chaos and make planes and trains crash.However，many people are optimistic about the future of the
14、Internet.Already，users can buy books，find out about holiday 4. (offer)and so on.Angela Rossetto says that in the next few years，it is clear that we are going to see a huge growth in shopping on the Internet.She also believes that，in the future，we 5. (get)entertainment from the Net and 6. television
15、will probably disappear.The mail service may also disappear with the 7. (increase)use of email.Some experts see our future in virtual 8. (real)the use of computers with sounds and pictures 9. make you feel as if you are in 10. real situation.【答案】1.has grown2.clearly3.about4.offers5.will get6.that7.increasing8.reality9.that10.a
