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1、M7 Unit1Living with technology,refrigerator,washing machine,Air conditioner,microwave oven,vacuum cleaner,desktop,laptop,The evolution of video and sound devices,Reading strategy: understanding headings,If you want to obtain some specific information, for instance, information about satellite TV, fr
2、om this passage as fast as possible, what will you do?,Looking at subtitles （副标题）,_history of TV,(in order of_ ),Early history of_ _ goes digital,TV,Audio devices,Early,time,modern,age: Cable TV, satellite TV, digital TV,The,_,sound recorders,Sound and video,Fast reading,TV,Part One:（L1-25),Careful
3、reading,black-and-white TV,Make a timeline of the development of TV,1925,The first public TV broadcast were made in the USA,1928,Long-distance TV broadcast was made between the UK and the USA. Regular public broadcasting began.,1938,The first color TV program was broadcast,1951,Regular color TV broa
4、dcasts began in the USA,John Logie Baird,Most early TV broadcasts were made using his system. However, his system was very _ and had many _.,primitive,drawbacks,Early history(1-17),Philo Farnsworth, He made important _ in the development of TV. Modern TVs use many of the _ first discovered by him.,b
5、reakthroughs,principles,1962,Satellites were used to broadcast TV,The Modern age(19-25),Satellites make TV _ to people who live far away from cities.,accessible,Satellite TV dishes,They can often be seen throughout the countryside and remote areas. However, most people benefit _ satellite TV, as loc
6、al TV companies broadcast the _ to the population living nearby.,from,signals,distributed,Part Two:(L26-52),Audio Devices,Early history of sound devices(26-32),1877 : Thomas Edison made the first recording of a human voice.,tubes,Early record players used _ to record on.,He used discs as alternative
7、s to tubes.,Whos he?,Emile Beriner,tape recorders,steel tape,Sound and video devices (33-41),In1982, the first_used to copy sound were in Germany. Most early recorders employed _ to record on.,steel tape,Portable cassette player were develope by the _,late 1960s,Video recorders,By the late 1970s, vi
8、deo recorders for home use were introduced.,_(1982),Digital era 数字时代,_(1993),_(1995),VCD,DVD,the first CDs,Sound and video go digital,walkman,CD player,MP3,MP4,iPad,1. Color TV became popular within just a few years after it was invented. ( ) 2. People without satellite dishes do not benefit at all
9、from satellite TV broadcasts. ( ),Reading (Part C1):,F（12-14）,F（24）,3. Some of the first tape recorders used plastic tape to record on. ( ) 4. Records and cassettes do not offer as good a sound quality as CDs. ( ) 5. New technology will soon make many of the things talked about in the article out of date. ( ),T（43-45）,F（28）,T(49-50),Keys for activity D. 1. _ 2. _ 3. _ 4. _ 5. _ 6. _ 7. _ 8. _,e,d,h,c,f,a,b,g,Keys for activity E. 1. _ 2. _ 3. _ 4. _ 5. _ 6. _ 7. _,foresaw,drawbacks,constructed,delayed,percentage,receiver,Eventually,
