高中英语多媒体课件 19页

高中英语多媒体课件\n\n\n\nTELEPHONESUNIT23\nAnswerthefollowingquestions1.Howwasonetelephoneconnectedwithanotherinthepast?2.Howisonetelephoneconnectedwithanothertoday?BythickheavymetalwiresByverythinglasspipesandsatellite\nelectricalsignalselectricalsignalsHowdoesatelephonework?\nWhydidpeoplehavetowindthehandlebeforemakingacall?\nWhatdidthetelephoneoperatordo?\nWhataresatellitesusedfor?AmericaChina\nelectricalsignalselectricalsignalsWhatwasthewaytosendsignalsinthepast?metalwireslightsignalslightsignalsHowtosendsignalsnow?thinglasspipestoonoisy!notclear!veryclearelectricalsignalselectricalsignals\nconferencecallingABCDE\ncallwaitingABC\nABBcredirection\nFindsomewordstocompletethesentences:Ifyoudon’tknowthetelephonenumberofacertainunit,youmaylookitupinthetelephoned________.2.Thiskindoffoodwills__________youupafteryourillness.3.Pleaser________alltheletterstothefollowingaddresses.irectorytrengthenedirect\n4.Wehaveplentyofrainhere,Itrainsf__________inthispartofthecountry.5.Youmustw______theclockonceaweek,oritwillstop.requentlyind\nCompletethefollowingsentences1.________________________________(他怎样到美国来的)wasamystery.2.____________________________________________(我们是否应该穿校服)hasnotbeendecided.3.Ididn’treceivethenews________________________________(会议时间推迟了）4.Theproblemis______________________________________________(电信号会变得越来越弱）astheytravelalongmetalwires.HowhecametoAmericaWhetherweshouldwearschooluniformsthatthemeetinghadbeen.delayedthatelectricalsignalsgetweakerandweaker\nIfyouhavegotenoughmoney,whichofthefollowingthingsdoyouwanttohavemost?Giveyourreasonsforthechoice.A.AmobiletelephoneB.AcarC.AcolourTVD.AcomputerDiscussion\nHomework:1.Readthetextagainandagain2.Ex.1onPage127.