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Unit 1单词：〖Ex. 3〗根据下面的英文解释，写出相应的英文词汇（使用学过的单词、词组或缩略语）〖Ex. 5〗把下列短文翻译成中文系统面板和普通键盘有专门控制键，你可以使用这些控制键实现主要的多媒体功能：观相片、听音乐和看电影。
面板还有为看电视和阅读电视指南而设的快速启动按钮。
Ex. 9〗用that从句做宾语将下面汉语译成英语你应该知道，你不仅仅能读取磁盘上的数据，也能够往上面写新的信息1. You should know that you can not only read data from the disk but also write new information to it.你应该意识到，软盘容纳不了多少数据2. You should realize that floppies do not hold too much data.我们计算机老实说，USB要比火线慢多了3. Our computer teacher said that USB is much slower than Firewire.我认为CPU主要责任是执行指令4. I think/believe that the CPU is primarily responsible for executing instructions.Unit 2单词〖Ex. 3〗根据下面的英文解释，写出相应的英文词汇（使用学过的单词、词组或缩略语）Unit 3〖Ex. 3〗根据下面的英文解释，写出相应的英文词汇（使用学过的单词、词组或缩略语）Unit 4单词〖Ex. 3〗根据下面的英文解释，写出相应的英文词汇（使用学过的单词、词组或缩略语）Unit 5单词〖Ex. 3〗根据下面的英文解释，写出相应的英文词汇（使用学过的单词、词组或缩略语）〖Ex. 5〗把下列短文翻译成中文佳能打印机有五种样式，价格从$80 到$500不等，满足了任何想打印相片用户的需求。
Unit 7 Network【教学目的】○ Learn about the English terms of Network: LAN（局域网），WAN（广域网），Band（波段），bandwidth（带宽），bridge（网桥），repeater（转发器），router（路由器），full duplex （全双工），optical fiber（光纤），packet（数据包），star network（星型网络），switch （交换机），hub（集线器），TP, “Twisted Pair”（双绞线）○ Improve the students‟ ability to understand the long and difficult sentences in the text.○ Master the key language points and grammatical structures in the text.○ consolidate the technical terms and important professional phrases by doing exercises.【教学重点难点】○Important technical terms:LAN（局域网），W AN（广域网），band（波段），bandwidth（带宽），bridge（网桥），repeater（转发器），router（路由器），full duplex（全双工），optical fiber（光纤），packet（数据包），star network（星型网络），switch（交换机），hub（集线器），TP, “twisted pair”（双绞线）○ Difficult sentences:1. Optical input is converted to electrical form to restore a clean signal, which drives lasers that fully restores the optical signal at the original signal strength.2. The twists are important: they give it electrical characteristics which allow some kinds of communications otherwise not possible.○ Review the important points of essential Englishforward vt.buffer vt.characterize vt.【教学步骤】Step OneRead and explain Text A to the students and ask the students to keep in mind the following professional terms:Network（网络）: a group of computers working together; the physical wire etc. connecting the computersLAN（局域网）：Local Area NetworkWAN（广域网）：Wide Area Networkband（波段）：A range of frequencies between two defined limits.bandwidth（带宽）：A measure of capacity of information-carrying capacity on a communications channel.bridge（网桥）：A data communications device that connects two or more network segments and forwards packets between them.repeater（转发器）：1. Equipment that receives a low-power signal, possibly converting it from light to electrical form, amplifying it or retiming and reconstructing it for transmission. 2. An optoelectrical device used at each end and occasionally intermediate points of exceptionally long fiber optic span.router（路由器）：A network device that connects two similar networks having the same network protocol.full duplex（全双工）：The simultaneous transmission of data in both directions, used when communicating between two computers.optical fiber（光纤）：Thin filaments of glass through which light beams are transmitted.packet（数据包）：Generic term for a bundle of data, organized in a specific way for transmission.bus network（总线网络）：A type of network configuration where multiple nodes share access at the physical level.Star Network（星型网络）：The descriptive name of any network which is configured with many branches attaching to a common point.switch（交换机）：a device that turns current on and off. A switch is a network hub device creating a direct connection to the destination port.hub（集线器）：The center of a star-type network is called a hub.TP, “Twisted Pair”（双绞线）：The type of wire used by the phone company to wire telephonesStep TwoHelp the students to analyze the following long difficult sentences:1. Optical input is converted to electrical form to restore a clean signal, which drives lasers that fully restore the optical signal at the original signal strength.Optical input“光输入”；is converted to“被转换为”；electrical form“电格式”；to restore a clean signal,“恢复成清晰信号”。
