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1、Lead-in: 1._ plays an important role in exploring the unknown fields and realizing the dreams of our ancestors（祖先）.Science and technology2.High technology has a direct effect on our life.What electric goods and electronic appliances(電器) do you have at home?第1頁/共25頁 TV setremote control第2頁/共25頁 refri

2、geratorwashing machine第3頁/共25頁 microwave ovenAir conditioner第4頁/共25頁 flatiron vacuum cleaner第5頁/共25頁electric rice cookerelectromagnetic oven第6頁/共25頁 desktop laptop第7頁/共25頁digital cameraDVDmicrophone第8頁/共25頁MP4MP3第9頁/共25頁cell phonetelephone第10頁/共25頁tape recorderelectronic calculator第11頁/共25頁electric

3、fanhair dryer第12頁/共25頁Timeline 1982 electric fan1984 TV(black-and-white)1985 refrigerator1986 washing machine1990 TV (colour)1997 air-condition2001 mobile phone(with basic functions)2004 mobile phone(with MP3 and camera)What can you conclude from the timeline?development第13頁/共25頁The development of e

4、lectric devices:development of TVblack-and-white TVcolour TVLCD screen第14頁/共25頁 desktop laptopPalmdevelopment of computer第15頁/共25頁development of dictionarydictionaryelectronic dictionary第16頁/共25頁development of communicationletter/telegramtelephonebeepercell phone第17頁/共25頁developmentof cameramobile p

5、honewith a cameradigital cameracamera第18頁/共25頁development of audio(音響) devicegramophone(留聲機)radio/tape recorder第19頁/共25頁 MDwalkmanCD playerMP3MP4第20頁/共25頁development of fanfanair conditionerelectric fan第21頁/共25頁Discussion:1.What can our human beings benefit from the development of electric and elect

6、ronic appliances? 2.Can we depend on these appliances completely?第22頁/共25頁Summary With peoples hard work and intelligence, human beings own lots of useful and handyelectric and electronic devices.These devicesdo make us save a lot of time and energy.Besides, they free us from heavy housework.But we should not depend completely on them.We human beings should make reasonable useof them so that we can relax ourselves andfind pleasure and happiness in our life.第23頁/共25頁Homework 1.Read two passages on P106-107 2.Preview reading.3. Unit Revision: Period 1.第24頁/共25頁感謝您的觀看！第25頁/共25頁