资源描述：
《2015年6月大学英语四级考试及答案――模拟题二.doc》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、模拟试题二PartIWritingDirections:Forthispart,youareallowed30minutestowriteacompositiononthetopic:OverseasStudyatanEarlyAge.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow:1.目前很多父母在子女高中毕业前就送他们出国学习2.形成这种趋势的原因3.我对些的看法OverseaStudyatanEarlyAgePartIIReadingComprehension
2、(SkimmingandScanning)Directions:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswersheet1.TheSky'sLimitAirtravelisarapidlygrowingsourceofgreenhousegases.Butitisalsoanindispensablewayoftravel.ThenewA380Thedouble-deckerA380,thebiggestairl
3、inertheworldhasseen,landedatHeathrowlastmonthtotestwhetherLondon'smainairportcouldhandlethenew550-seater,duetoentercommercialserviceattheendofthisyear.ItwasaproudmomentforBritain'sRolls-Royce,themakersoftheaircraft'sTrent900engines.Rolls-RoycesaysthefourTrentsontheA380a
4、reascleanandefficientasanyjetengine,andproduce"asmuchpoweras3,500familycars".Asimplecalculationshowsthattheequivalentofmorethansixcarsisneededtoflyeachpassenger.Takethecalculationfurther:flyingafullyladenA380is,intermsofenergy,likea14km(nine-mile)queueoftrafficontheroad
5、below.Andthatisjustoneaircraft.In20years,Airbusreckons,1,500suchplaneswillbeintheair.Bythen,thetotalnumberofairlinersisexpectedtohavedoubled,to22,000.Thehugeairplanealonewouldbepumpingoutcarbondioxide(CO2)atthesamerateas5millioncars.Thatmaynotseemmuchcomparedwiththe60mi
6、llionvehiclesthatpouroffassemblylineseveryyear—orthe1billionvehiclesalreadyontheworld'sroads.Butwhereascarsareusedroughlyforaboutanhourorsoaday,jetairlinersareonthemoveforatleast10hoursaday.Andtheyburntax-free,highoctane(1)高能量的)fuel,whichdumpshundredsofmillionsoftonneso
7、fCO2intothemostsensitivepartoftheatmosphere.Aviationisarelativelysmallsourceoftheemissionsblamedforglobalwarming,butitsshareisgrowingthefastest.Theevidenceisstrong.Asaresult,aviationisincreasinglyattractingtheattentionofenvironmentalistsandpoliticians.Amidmuchcontrovers
8、y,CO2caps(最高限制)andcarbon-tradingcouldsoonbeusedtohelpcurbaircraftemissions.Frequentflyers,freeridersAirlinesar
