全新版大学英语（第二版）听说教程3讲义Unit 13 Inventions.doc

Unit 13 Inventions Part A Pre-listening Task Questions for Discussion What do you think were the most important inventions in the last century? (For example, the computer and the Internet) What is online shopping? What kind of things are bought most online? Do you go shopping online? If yes, what do you buy? Why can online stores attract customers? Have you or your friends ever taken the medicine aspirin? What do you know about it? Suppose you were an inventor, what would you like to invent? Demo: 2. What is online shopping? What kind of things are bought most online? Online shopping is the process whereby consumers directly buy goods, services, etc. from a seller interactively in real-time without an intermediary service over the Internet. If an intermediary service is present the process is called electronic commerce. An online shop, e-store, Internet shop, online store, or virtual store evokes the physical analogy of buying products or services at a bricks-and-mortar retailer or in a shopping mall. Now you can buy almost everything on the Internet, from soap to computer. It is said that some terrorists have bought the technology of making atomic bombs. 6. Suppose you were an inventor, what would you like to invent? If I had studied biology and medical science, I would like to invent a drug that would enable people to live a long life, perhaps 200 years or longer. Many people say life is short. That is very true. When people live longer, they will be able to bring their knowledge and experience to better use and create a lot more good things for the human race. Language Focus Here are some sentences and structures that you may find useful in discussing the above questions. I think the most important inventions in the 20th century were the computer and the Internet. I often / seldom go shopping online. I prefer to / would rather buy computer gear online. I’m fond of / interested in buying books at online bookstores. For books, CDs and video games, I often visit