大学英语4课后练习答案(units 1-3)

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1、KeytoExercises(Units1-3)Unit1PartIITextATextOrganizationPartsParagraphs''MainIdeasPartOneParas1-2Introduction—BothNapoleon'sandHitler'smilitarycampaignsfailedbecauseoftheseverityoftheRussianwinter.PartTwoParas3-11Napoleon'smilitarycampaignagainstRussiaPartThreePa

2、ras12-20Hitler'smilitarycampaignagainsttheSovietUnionPartFourPara21Conclusion—Theelementsofnaturemustbereckonedwithinanymilitarycampaign.2.SectionsParagraphsMainIdeasSectionOneParas12-13Hitler'sblitzkriegagainstRussiaandStalin'sscorchedearthpolicySectionTwoParas1

3、4-18thebattlesfoughtatLeningrad,MoscowandStalingradSectionThreeParas19-20theRussiancounter-offensiveandtheoutcomeofthewarLanguagesenseenhancement(1)thefierceresistance(2)thelongmarch(3)devastatingenemy(4)bleak(5)launched(6)militarymight(7)moweddown(8)campaign(9)p

4、ainfullesson(10)theaidVocabularyI.1.1)alliance3)stroke5)minus7)declarations2)atthecostof4)limp6)regions8)siege9)raw10)bidehistime11)havetakentheirtoll12)Inthecaseof2.1)isfacedwith2)getboggeddown3)ispressingon/pressedon4)dragon5)getby6)dineout7)havecutback8)getth

5、rough3.1)Therapidadvanceingenetherapymayleadtotheconquestofcancerinthenearfuture.2)…hasbeenbroughttoahaltbythedelayedarrivalofrawmaterialsduetothedockworkers’strike.3)Sarahasmadeuphermindthatherleisureinterestswill/shouldnevergetinthewayofhercareer.4)Obviouslythe

6、reporter'squestioncaughttheforeignministeroffguard.5)Theintroductionoftheelectroniccalculatorhasrenderedtheslideruleoutofdate/obsolete.4.1)Beingfacedwithanenemyforcesmuchsuperiortoours,wehadtogiveuptheoccupationofbigcitiesandretreattotheruralandmountainousregion

7、stobuildupourbase.2)Unityiscrucialtotheefficientoperationofanorganization.Failuretoreckonwiththisproblemwillweakenitsstrength.Inmanycases,workmaybebroughttoahaltbyconstantinternalstruggleinanorganization.3)TheRedArmyfoughtaheroicbattleatStalingradandwonthedecisi

8、vevictoryagainsttheGermans.Infact,thisbattleturnedthetideintheSecondWorldWar.Duringthisfamousbattle,theSoviettroopswithstoodtheGermansiegeandweakenedtheGermana