大学英语全新版第三册第三单元答案

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1、1.Thetextis,roughlyspeaking,organizedinthreeparts-anopening,abodyandaconclusion.Theparagraphnumbersofeachparthavebeengiventoyou.Nowwritedowntheirmainideas.TextOrganizationPartsparagraphsMainIdeasPartTwoParas1-3PartTwoPar4-15PartThreePa16-19InAmerica,theeraofleavingthefrontdooronthelatchhas

2、drawntoaclose.Anewatmosphereoffearanddistrustcreepsintoeveryaspectofdailylife.Asaresult,securitydevices,invariedforms,areputtouse.Bylockingourfearsout,webecomeprisonersofourownmaking.2.Inthetexttheauthoruseslotsoffactstosupporthiscentralpointofview:Americaisdeterioratingfrom“theLandoftheFr

3、ee”into“themostinsecurenation”.Couldyoufindanymoresupportingfactsthantheonethathasbeenlistedbelow,andwritethemdown?Doorsarenotleftunlockedeitherincitiesorinruralareas.2)__________________________________________________________________________________3)_____________________________________

4、______________________________________________4)______________________________________________________________________________________________________________________________Dead-boltlocks,securitychains,electronicalarmsystemsandtripwiresarewidelyinuse.Suburbanfamilieshavesteelbarsbuiltins

5、lidingglassdoors.Smallnoticeswarningagainstburglaryarecommonlyseenpastedonthewindowsofthemostpleasanthomes.5)____________________________________________________________________________________6)____________________________________________________________________________________7)_________

6、_______________________________________________________________________________________________________________________8)_______________________________________________________________________________________Accesscardsarerequiredofthosewhoworkwithmediumtolarge-sizecompanies.Suburbanhousew

7、iveswearrapewhistlesontheirkeychains.AirportsecurityuseselectronicX-rayequipmenttoguardagainstterrorism.Businessmenemploynewmachineslinkeduptotheirtelephonetohelpdeterminewhetherthecalleristellingliesornot.I.2.Fillinthegapswithwordsorphraseschosefromthebox.Cha