2007年江苏省普通高等学校“专转本”统一考试大学英语 (2)

《2007年江苏省普通高等学校“专转本”统一考试大学英语 (2)》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、2007年江苏省普通高等学校“专转本”统一考试大学英语第I卷（共100分）PartIReadingComprehension（共40分）PassageoneUnderproperconditions,soundwaveswillbereflectedfromahillsideorothersuchobstruction.Soundtravelsattherateofaboutone-fifthofmilepersecond.Ifthehilliselevenhundredfeetaway,ittakestwosecondsforthesoundtotrav

2、elothehillandback.Thus,bytimingtheintervalbetweenasoundanditsreflection(theecho),youcanestimatethedistancetoanobstruction.Duringwordwar2theBritishusedapracticalapplicationofthisprincipletodetectGermanplanesontheirwaytobombLondonlongbeforetheenemywasnearthetarget.Theyusedradiowaves

3、insteadofsoundwaves,sinceradiowavescanpenetratefogandclouds.TheoutnumberedRoyalAirForce(RAF)alwaysseemedtothepuzzledGermanstobelyinginwaitattherighttimeandnevertobesurprised.ItwasradioechoesmorethananythingelsethatwontheBattleofBritain.Sincetheradiowaveswereusedtotellthedirectioni

4、nwhichtosendtheRAFplanesandthedistancetosendthem(theirrangeofflight,inotherwords),thedevicewascalledradiodirectingandranging,andfromtheinitialsthewordradarwascoined.(filescomefromwww.dinyuan.cn)1.Soundwavesreflectedfromahillcanbeusedtoestimatethe.A.heigtofthehillB.speedofsoundC.di

5、stancetothehillD.intensiteofsound2.Practicalapplicationsofthisprinciplesresultedin.A.NewelectronicinstrumentsforplanesB.AradiodirectingandrangingdeviceC.NewradiosetsforRAFbombersD.Anelectronicdetectingdevice3.RadarenabledtheEnglishto.A.DetectGermanplanesontheirwaytoLondonB.Directt

6、heoutnumberedRAFplaneseffectivelyC.ConfuseGermanbomberpilotsD.BothAandB4.ItcanbeinferredfromthepassagethatA.LightwavescouldbeusedinadevicesimilartoradarB.Radarwasapracticalapplicationofawell-knownprincipleC.RadargreatlyincreasedtheeffectivenessoftheRoyalAirForceD.Soundwavesarerefl

7、ectedfromahillsideunderallconditions5.TheauthorofthispassageprobablyintendedtoexplainA.ExactlyhowradarworksB.WhytheBritishusedradiowavesintheirdeviceC.Howradar(workanddevice)cametobeD.HowradarhelpedtheBritishwintheBattleofBritainPassageTwoIngeneral,theancientRomanswereapracticalpe

8、ople.Theycaredlessaboutphilosophy