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1、原文段落Unit1Isuspectnoteveryonewholovesthecountrywouldbehappylivingthewaywedo.Ittakesacoupleofspecialqualities.Oneisatoleranceforsolitude.Becausewearesobusyandonsuchatightbudget,wedon'tentertainmuch.Duringthegrowingseasonthereisnotimeforsocializinganyway.JimandEmil
2、yareinvolvedinschoolactivities,buttheytoospendmostoftheirtimeathome.?Theotherrequirementisenergy--alotofit.Thewaytomakeself-sufficiencyworkonasmallscaleistoresistthetemptationtobuyatractorandotherexpensivelaborsavingdevices.Instead,youdotheworkyourself.Theonlyma
3、chineryweown(notcountingthelawnmower)isalittlethree-horsepowerrotarycultivatoranda16-inchchainsaw.?Unit2Yetthisstopwasonlypartofamuchlargermissionforme.JosiahHensonisbutonenameonalonglistofcourageousmenandwomenwhotogetherforgedtheUndergroundRailroad,asecretwebof
4、escaperoutesandsafehousesthattheyusedtoliberateslavesfromtheAmericanSouth.Between1820and1860,asmanyas100,000slavestraveledtheRailroadtofreedom.?InOctober2000,PresidentClintonauthorized$16millionfortheNationalUndergroundRailroadFreedomCentertohonorthisfirstgreatc
5、ivil-rightsstruggleintheU.S.Thecenterisscheduledtoopenin2004inCincinnati.Andit'sabouttime.FortheheroesoftheUndergroundRailroadremaintoolittleremembered,theirexploitsstilllargelyunsung.Iwasintentontellingtheirstories.Unit3Ithasbeenreplacedbydead-boltlocks,securit
6、ychains,electronicalarmsystemsandtripwireshookeduptoapolicestationorprivateguardfirm.anysuburbanfamilieshaveslidingglassdoorsontheirpatios,withsteelbarselegantlybuiltinsonoonecanprythedoorsopen.?Itisnotuncommon,inthemostpleasantofhomes,toseepastedonthewindowssma
7、llnoticesannouncingthatthepremisesareundersurveillancebythissecurityforceorthatguardcompany.?ThelockisthenewsymbolofAmerica.Indeed,arecentpublic-serviceadvertisementbyalargeinsurancecompanyfeaturednotchartsshowinghowmuchatriskweare,butapictureofachild'sbicyclewi
8、ththenow-usualpadlockattachedtoit.??Unit4Hehadimpressivepowersofconcentration.Einstein'ssister,Maja,recalled"...evenwhentherewasalotofnoise,hecouldliedownonthesofa,pi
