21世纪大学英语第四册课后习题答案(全)

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1、UnitoneTEXTAII1.Hedefinesgreatnessasthelastingcontributionwhichapersonmakesorhasmadetohumancivilization.2.TheexampleofChurchillshowstheimportanceofpersistenceanddedicationinachievinggreatness.3.Firstbornsandonlychildrentendtomakegoodleadersintimesofcrisis,butmiddle-bornchildrenarebetter

2、peacetimeleaders.4.A20thcenturypoliticianshouldbeaneffectivepublicspeakerandasocialperson.5.Intelligenceseemstobelessimportantthanotherfactors,suchastheabilitytocommunicateeffectively.6.Theabilitytoovercometraditionalwaysofthinkingisalsocrucial.7.Theysimplydon’tdevotetheamountoftimerequ

3、ired.8.Thestudyshowedthatenjoyingone’sworkisthebestformofmotivation.IV1.chat2.acknowledge3.motivated4.charcteristic5.despite6.influential7.cited8.obstacle9.intrinsic10.criteria11.obsession12.innate13.contribution(s)14.contemporary15.submitted16.moraleV1.leftbehind2.rise3.madehistory4.we

4、reendowedwith5.putupwith6.goingnowhere7.ifocuseson8.bebuilton9.putin10.comeupwith11.takecharge12.set...apartVIefficiencyemergencyfluencyfrequencyproficiencytendencyurgencysufficiency1.fluency2.proficiency3.emergency4.Efficiency5.tendency6.frequencyVII1.Forsomestudents,it'snotthattheydon

5、'tputinenoughtime—it'sthattheydon'thavegoodstudyhabits.2.Childrenperformdifferentlyatschool.It'snotthattheyhavedifferentIQs—it'sthattheyarebroughtupindifferentenvironments.3.Thecompanyisnotveryproductive.It'snotthatitsstaffaren'ttalented—it'sthattheirenergyhasn'tbeenchanneledeffectively

6、.4.I'mreallysorry.It'snotthatIdon'twanttogotothecinemawithyou—it'sthatIhavetofinishmypapertonight.5.Youhaveastomachache.It'snotthatthefoodwasbad—it'sprobablythatyouhavetoomuchstressfromyourwork.VIII1.PresidentWilsondidn'ttrytobringtheUSbacktoeconomicandpoliticalisolation.Instead,hebelie

7、vedinyearsmortgagehousing;4.mortgageregistrationformalitiesarecompleted.(D)pledge1.borrower(includingthepledgor)between18-65yearsofage,withfullcivilcapacity;2.collateralinternationalcooperationthroughanassociationofnations.2.Computersdon'tteachstudentsingroups.Instead,theycanhe