西交大unit1英语课后习题答案

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1、SentenceStudy1.Weareonatrajectoryforglobalwarmingtobecomemuchmoreintenseunlesswebeginaconcertedrapidshifttowardalow-carboneconomy.(para.1—line2)Notes:①trajectory轨迹，轨道，弹道ballistictrajectory弹道轨迹，惯性飞行轨迹onatrajectory:onthewaytowarde.g.Themissiledeflectedf

2、romitstrajectory.Theuniversityisontherighttrajectoryinansweringthequestion“whateducationcando?”②concerted协定的，协调的concertedaction一致行动③intense~heat/~emotion/~painintensive~training/~care/labor-~/~economyintense和intensive的意思在相当程度上是交叉的，但是它们经常有细微的差别。当用来描述人的

3、感情或活动时，intense通常指由内在倾向而来的力量或专心；而intensive更常用于指行为的强度和程度是由外部强加的。Paraphrase:Humanbeingsaremakingtheearthwarmerandwarmertoanintolerabledegree.Nowtheonlytostopitisforallcountriestotakeactionstogethertobuildalow-carboneconomy.2.Fearsofanenvironmentalcrisisa

4、redefiningtheirgenerationinwaysthattheDepression,WorldWarII,VietnamandtheColdWar’slingering‘WarGames’etchedsoulsinthe20thcentury.(para.4--line2)Notes:①TheGreatDepressionwasasevereworldwideeconomicdepressioninthedecadeprecedingWorldWarII.Itstartedinabo

5、ut1929andlasteduntilthelate1930sorearly1940s.②Vietnam:VietnamWar----Inthe1950'stheUnitedStatesbegantosendtroopstoVietnam.Duringthefollowing25-yearstheensuingwarkilledover2,5millionpeopleonbothsides.③Coldwarbeganin1946withWinstonChurchill'sIronCurtainS

6、peech,andendedin1991withthecollapseoftheSovietUnion,aconflictbetweenSocialismandCapitalism.④inwaysthat:以.....的方式e.g.Humanshapetheirenvironmentinwaysthatotherorganismscannot.Watermovesincomplexwaysthatnoonecouldeverdraw.Paraphrase:Youngpeoplenowadaysar

7、efrightenedandimpactedbyenvironmentalpollutionandclimatechange.Thefrightisjustlikethatofpeoplein20thcenturywhohaveexperiencedandsufferedfromDepression,WorldWarII,ColdWarandVietnamWar.Theseallhaveleftintensepainfulscarsonpeople’smindandbody.Translation

8、:对环境危机的恐惧正在影响着年轻一代，其影响的方式如同上世纪的大萧条、二战、越战、冷战的“战争阴影”对当时人们心灵的侵蚀一样。3.Accordingtothisanalysis,keepingaveragetemperaturetoanincreaseintherangeof2.0-2.4oCwouldrequireaCO2equivalentconcentration----orCO2e,whichisameasurementthatexpressestheglobalwarmi