牛津英语模块七第一单元reading.ppt

M7 Unit1Living with technology refrigeratorwashing machineAir conditioner microwave ovenmicrowave oven vacuum cleanervacuum cleaner desktop desktop laptop laptopThe evolution of video and sound devicesReading strategy:understanding headingsIf you want to obtain some specific information,for instance,information about satellite TV,from this passage as fast as possible,what will you do?Looking at subtitles（副标题）（副标题）_history of TV(in order of_)Early history of_ goes digital TVAudio devicesEarlytimemodern age:Cable TV,satellite TV,digital TV,The _sound recordersSound and videoPart One:（L1-25)black-and-white TVMake a timeline of the development of TV1925The first public TV broadcast were made in the USA1928Long-distance TV broadcast was made between the UK and the USA.Regular public broadcasting began.1938The first color TV program was broadcast 1951Regular color TV broadcasts began in the USAJohn Logie BairdMost early TV broadcasts were made using his system.However,his system was very _and had many _.primitivedrawbacksEarly history(1-17)Early history(1-17)Philo FarnsworthHe made important _ in the development of TV.Modern TVs use many of the _ first discovered by him.breakthroughsprinciples1962 Satellites were used to broadcast TVThe Modern age(19-25)Satellites make TV _ to people who live far away from cities.accessibleSatellite TV dishesThey can often be seen throughout the countryside and remote areas.However,most people benefit _ satellite TV,as local TV companies broadcast the _ to the population living nearby.fromsignalsdistributedPart Two:(L26-52)Early history of sound devices(26-32)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 alternatives to tubes.Whos he?Whos he?Emile BerinerEmile Berinertape recorderssteel tapeSound and video devices(33-41)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 1960sVideo recordersBy the late 1970s,video recorders for home use were introduced._(1982)Digital era数字时代数字时代_(1993)_(1995)VCDDVDthe first CDs Sound and video go digitalSound and video go digitalwalkmanCD playerMP3MP4iPad1.Color TV became popular within just a few years after it was invented.()2.People without satellite dishes do not benefit at all 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._edhcfabgKeys for activity E.1._ 2._3._ 4._5._ 6._7._foresawdrawbacksconstructeddelayedpercentagereceiverEventually