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1、Unit 7 Internet,计算机专业英语,郭敏 徐莹 杨阳,Unit 7 Internet,Section1 Situational Dialog Internet Shopping Section 2 Passages Passage A. A Brief Introduction to the Internet Passage B. Regulating the Internet Section 3 Skill in Focus Writing Skills Part 2: IT Project Proposals Section 4 Extended Reading Safe Sh
2、opping on EBay New Safari Browser Succeeds At Speed RATs Tips: Stop Unauthorized Access of Your Network,Unit 7 Internet,Section 1 Situational Dialogue,Unit 7 Section 1,Zhang Ling and Li Jie are talking about shopping on-line. Zhang Ling: You look excited. Whats going on? Li Jie: Look, Ive got the bo
3、ok Ive long expected but couldnt find in any bookstore nearby. Zhang Ling: I havent seen you go shopping. How did you buy it? Li Jie: I got from Taobao. Zhang Ling: You mean you do online-shopping? Li Jie: Yes. It saves lots of time and money, really convenient.,Unit 7 Section 1,Zhang Ling: How do y
4、ou do that? Ive never tried before. Li Jie: Well, its quite simple. Just search the items you want, compare their quality and price, and communicate with the seller if you have any questions. You can pay for your goods online and wait for them to be delivered to your house. Zhang Ling: But dont you
5、worry about the security of your account number when you pay online? Weve heard a lot of reports about credit card fraud on the Internet. Li Jie: I know its not easy to hand over the credit card number when you know nothing about the other end of the transaction, but online payment will be safer if
6、you use a third-party payment service. Zhang Ling: What is a third-party payment service?,Unit 7 Section 1,Li Jie: A third-party payment service enables you to transfer money into an online account and make payment from that account. Only when you confirm receipt of your goods will it transfer the m
7、oney into the sellers account Thus youll never expose your real credit card or bank account information. Zhang Ling: Sounds a better choice. What are the third-party payment services available? Li Jie: We can use AliPay on Taobao, like the most popular PayPal owned by eBay in the US. Capitel Easy is
8、 used by Joyo, and still others such as 99bill, TenPay, YeePay, ChinaPay, HaoPay, etc. Zhang Ling: I see. Is there anything we should pay attention to while using them? Li Jie: Yes, you should attend to some details when choosing the service.,Unit 7 Section 1,Zhang Ling: What are they, then? Li Jie:
9、 You should read the privacy policy and check for approval from authoritative organizations. Dont respond to e-mail messages from any third party asking you to confirm account details, for they might be an identity theft scam, such as phishing. Zhang Ling: How can I confirm my account details safely
10、? Li Jie: I suggest visiting the Website with your personal bookmark or by typing the URL of the payment service directly into the browser if you really need to confirm the information. Zhang Ling: OK. Maybe Ill try Internet shopping some other day. Thank you for your introduction. Li Jie: Youre wel
11、come.,Unit 7 Internet,Section 2 Passage A A Brief Introduction to the Internet,Unit 7 Section 2 Passage A,ARPAnet NSF www URL Newsgroup WAN TCP/IP SMTP POP NNTP,Signature encryption LAN FTP search engine C/S web page website hacker confidential data,Unit 7 Section 2 Passage A,The Internet, originall
12、y the ARPAnet (Advanced Research Projects Agency network), began as a military computer network in 1969. Other government agencies and universities created internal networks based on the ARPAnet model. The catalyst for the Internet today was provided by the National Science Foundation (NSF). Rather
13、than have a physical communications connection from each institution to a supercomputing center, the NSF began a “chain” of connections in which institutions would be connected to their “neighbor” computing centers, which all tied into central supercomputing centers. This beginning expanded to a glo
14、bal network of computer networks, which allows computers all over the world to communicate with one another and share information stored at various computer “servers,” either on a local computer or a computer located anywhere in the world. The Internet is not governed by any official body, but there
15、 are organizations which work to make the Internet more accessible and useful.,Unit 7 Section 2 Passage A,The Internet consists of thousands of networks world-wide, connecting research facilities, universities, libraries and private companies. Many of these networks have host computers dedicated to
16、maintaining archives of information which are accessible to the public. The functions of the Internet may be divided into several categories.,Unit 7 Section 2 Passage A,1. A Source of Information Internet services such as Newsgroups and the World Wide Web (WWW) hold vast amounts of information, much of which is freely accessible and available 24 hours per day. The information may be of varying quality but the diversity of available information is extraordinary; it includes IT, l
