《大学英语》全新版综合教程Book3Unit3SecurityTextATheLandoftheLockYearsagoinAmerica,itwascustomaryforfamiliestoleavetheirdoorsunlocked,dayandnight.Inthisessay,Greeneregretsthatpeoplecannolongertrusteachotherandhavetoresorttoelaboratesecuritysystemstoprotectthemselvesandtheirpossessions..Ⅰ.TeachingObjectivesStudentswillbeableto:1.graspthemainidea(Americaisdeterioratinginto"themostinsecurenation")andthestructureofthetext(opening-body-conclusion);2.learntousecomparisonandcontrastinwritingmoreeffectivelyandtousekeywordsformoreefficientreading;3.masterthekeylanguagepointsandgrammaticalstructuresinthetext;4.conductaseriesofreading,listening,speakingandwritingactivitiesrelatedtothethemeoftheunit.Ⅱ.BeforeReading1.EnglishSong—SaturdayNightSpecialListentotheSongQuestionsabouttheSong1)---WhoisMr.SaturdayNightSpecial?Thegun2)---Whatisthemessageofthesong?It'sdangeroustohaveguns.2.AirportSecurityExtraordinarychallengesrequireextraordinarymeasures.TheterroristattacksonAmericaofSeptember11,2001requirethatAmericansreformtheirNation’saviationsecuritysysteminfundamentalways.OnSeptember27,PresidentBushlaunchedtheprocessofreformbyannouncinghisproposalfora$500millionfederalgrantprogramtostrengthenaircraftsecurityandfederalmanagementofairportsecurityandscreeningservices.3.SecuritySystemsHoldadiscussionwithinstudentstoseewhatequipmentweusuallyusetokeepusB3-Unit3.doc1《大学英语》全新版综合教程Book3safe.securitychains—electronicalarmsystems—tripwires—slidingglassdoorswithsteelbars—accesscards—electronicX-rayequipment—high-intensitylight—rapewhistles—dead-boltlocks4.SomeSecurityMeasuresinAncientTimeTheGreatWallListenandanswerthefollowingquestions.TheGreatWallisapopularnameforasemi-legendarywallbuilttoprotectchina’snorthernborderin3rdcenturyBC,andfroimpressivestoneandearthenfortificationsbuiltalongadifferentnorthernborderinthe15thand16thcenturiesAD,longaftertheancientstructurehaddisappeared.RuinsofthelaterwallarefoundtodayalongformerborderareasfromBoHaiintheeasttoGansuProvinceinthewest.1)WhatwastheaimofbuildingtheGreatWalloriginally?ToprotectChina’snorthernborderinthe3rdcenturyBC.2)WherearetheruinsoftheGreatWalllocatednow?FromBoHaiintheeasttoGansuProvinceinthewest.CastleCastleswerebuiltinplaceswheretheycouldbeeasilydefended.Apositiononhighgroundprovidedthedefenderswithaviewofthesurroundingcountryside,makingattacksmoredifficult.Inflatareas,castlesweresurroundedbyaprotectivemoat.5.SecuritySituationsintheUSATerroristAttacksonSept.11,2001WhereveryouwereinlowerManhattanbeforeSeptember11th,2001,twobuildingsdominatedthelandscape.CriticssaidtheWorldTradeCentertowersdidn’trelatetotheirsurroundingsandweren’tespeciallypleasingindesign.Butthefactisthattheywerebig,undeniablyandfrighteninglyso,andawalkacrosstheplazainsummermonthscouldmakeyourheadreel.OnFebruary26,1993,theWorldTradeCentercomplexwasrockedbyanexplosivedeviceleftinoneoftheundergroundparkinglots;sitpeoplewerekilledandoverathousandinjured.OnthemorningofSeptember11,2001,theUnitedStatesofAmericaawoketofinditselfunderattack.SeveralterroristattackswithinanhourwreakedhavocinNewYorkCityandWashington,D.C.,causingwidespreaddevastationandmorethanfivethousandcasualtiesonSeptember11,2001.ItwasthedeadliestdayinAmericanhistory,costingmorelivesthantheattackonPearlHarbororD-Day.SeparatehijackedcommercialairlinershitbothoftheWorldTradeCentertowersinMa...
