牛津译林版（2019） 必修 第三册 Unit 3 The world online学案（共6份，含答案）

　　The Internet is the biggest source of information in the world,and it’s accessible through a computer.It consists of millions of pages of data. In 1969,DARPA,a US defence organisation,developed a way for all their computers to “talk” to each other through the telephone.They created a network of computers called DARPANET.For fifteen years,only the US army could use this system of communication.Then in 1984,the US National Science Foundation (NSF) started the NSFNET network.It then became possible for universities to use the system as well. NSFNET became known as the Inter-Network,or “Internet”. The World Wide Web (the web) is a computer network that allows computer users to access information from millions of websites via the Internet...By 2020,much web traffic could be in Chinese. The World Wide Web was invented in 1991 by an English scientist,Tim Berners-Lee.Berners-Lee built his first computer while he was at university using an old television! He came up with the idea of the World Wide Web in 1989 while he was working in Switzerland. Berners-Lee made it possible for everyone to use the Internet,not just universities and the army.He designed the first “web browser”,which allowed computer users to access documents from other computers.From that moment on,the web and the Internet grew.Within five years,the number of Internet users rose from 600,000 to 40 million. 词汇积累 1.accessible / k ses bl/ adj.可进入的;可使用的　　2.consist of由……组成 3.data / de t / n.(pl.)数据 4.defence /d fens/ n.保护,防御 5.create /kri e t/ vt.创造;发明 6.document / d kjum nt/ n.文件;公文;证件;文档 佳句背诵 1.It then became possible for universities to use the system as well.(it作形式主语) 然后,大学也可以使用该系统。 2.Berners-Lee made it possible for everyone to use the Internet,not just universities and the army. [make+it+adj.+(for sb) to do] 伯纳斯·李让每个人都可以使用互联网,而不仅仅是大学和军队。 Period Ⅰ　Welcome to the unit & Reading———通文本 Step Ⅰ　Read for the main idea Match the main idea with each Paragraph. Part 1(Para.1)　　A.We should use the Internet properly and responsibly. Part 2(Paras.2-4) 　　 B.We can achieve almost anything online. Part 3(Para.5) 　　C.The Internet has many advantages. Step Ⅱ　Read the lines (Ⅰ)Read the text and answer the following questions. 1.Why is the word “frontiers” used in the title 　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　 2.What is the function of the last sentence of the first paragraph 　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　 3.What should we be mindful of when dealing with the Internet 　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　 4.According to Paragraph 4,what are the convenient communication ways brought by the Internet 　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　 ... ...