科技英语综合教程第五单元详解Unit Five Wireless Communication科技英语综合教程第五单元详解Unit Five Wireless Communication.doc

Unit Five Wireless Communication (Warm-up questions: 1. What is the definition of a telephone? What about a mobile phone? 2. Do you know how to express the followings in English? 投币电话 信用卡电话 磁卡电话 可视电话 同线电话 人工电话 自动电话 台式电话 墙上电话 按键式电话 拨盘式电话 免提电话机 个人通讯话机 无线电话 ?移动电话 coin call credit card call magnetic card telephone video phone? party line manual telephone automatic telephone desk phone wall phone touch phone dial phone handsfree telephone PCS phone? cordless phone? mobile phones?  3. How does a mobile phone work? Mobile telephones are two-way radios. When you receive a call on your mobile phone, the message travels through the telephone network until it reaches a base station close to your phone. The base station then sends out radio waves that are detected by a receiver in your telephone, where the signals are changed back into voice or data. 4. What about the future of our mobile phone？ (Our phone will be faster. (Our phone will also connect on faster networks. (Our phone will be smarter. (Our phone will store more. (Our phone will play music we bought elsewhere, or music we bought through our phone. (Video phones wont look like baseball bats. (TV is coming. (Text A Your Next Computer Text Organization (p.144)- Five Parts Part One Paras. 1-3 Part Two Paras. 4-5 Part Three Paras. 6-9 Part Four Paras. 10-12 Part Five Paras. 13-14 (Part One Paras. 1-3 Now people spend countless / many hours using their mobile phone’s Internet connection to download, check or send messages . ( Obsolete (L. 3 杋ntroduction)?a. no longer in use or no longer useful 已废弃的,过时的 Eg.公司计划淘汰这些设备，因为它们已经报废了。 The company plans to phase out the equipment as it becomes obsolete. 我们的服务已经过时，需要从根本上进行改革。 Our service is obsolete, requiring root and branch reform. Gas lamps became obsolete when electric lighting was invented. Chanukah （L.3; para. 1) n. (=Hanuka)光明节(犹太人一纪念节日) Every year between the end of November and the end of December, Jewish people arou