UNIT4_The_information_age.ppt

信息时代简史 　　 人们常用最具代表性的生产工具来代表一个历史时期，如石器时代，青铜时代，铁器时代，蒸汽时代。用这种思维模式 来观察20实际，可以说，人类从电气时代走向了信息时代。 　　 新科技革命以电子信息业的突破与迅猛发展为标志，主要包括信息技术，生物工程技术，新材料技术，海洋技术，空间技术五大领域。晶体管和大规模集成电路极大的降低了信息传播的费用，其结果是：人类社会从工业时代进入了信息时代。 Read the text and do true-false exercises: (true or false exercises) (抢答) 1. ( ) We know TV does not tell us what is going on the country. 2. ( ) TV makes our life more colorful . Fast Reading After reading, answer the following questions? What is the “couch potatoes”? 一、the advantaes of TV 1. It brings the whole world into our family both in sight and in sound. 2. We can know what is going on across the country and all over the world 3. We can get much news and other information by watching TV. 4. We can watch many programs and TV plays, enjoy music, see movies and even watch live sports games on TV. Such as the following cards * * * * videophone What are they ? Do you have a telephone ? Do you like watching TV? 同学速读课文，找出每段的主题句或总结出主要大意。 “Couch potatoes” are people who spend too much time watching TV. 一、the disadvantages of TV Couch potatoes Both TV and the Internet are certainly great wonders of modern science and technology. TV brings the world into our home in sight and in sound. It tells us what is going on across the country and all over the world. 用图像和声音 发生，进行，继续 全世界 Sitting at home ,we can visit places of interest, enjoy music or TV plays, see movies and even watch live sports games.Television makes our life more colorful. 活的，活跃的 make +n.+adj. 使...... But some people often spend too much time watching television sitting on a sofa.We call them “couch potatoes”. In the evening, they do nothing but turn on the TV , slowly go through all the channels and finally settle on the one they like. Let me tell you what ____________(正在发生) in class at 7:30 this morning. Your parents ___________________(担心) your heal