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1、大学英语六级模拟试题4及答案 PartIWriting(30minutes)Directions：Forthispart,youareallowed30minutestowriteashortessayentitledSayNotoPiratedProducts．Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow:1.目前盗版的现象比较严重2.造成这种现象的原因及其危害3.我们应该怎么做SayNotoPiratedProducts PartⅡReadingComprehension(SkimmingandScanning)
2、(15minutes)Directions:Forquestions1to4,markY(forYES) ifthestatementagreeswiththeinformationgiveninthepassage;N(forNO) ifthestatementcontradictstheinformationgiveninthepassage;NG(forNOTGIVEN) iftheinformationisnotgiveninthepassage.Forquestions5to10,completethesente
3、nceswiththeinformationgiveninthepassage. RainforestsTropicalrainforestsarethemostdiverseecosystem(生态系统)onEarth,andalsotheoldest.Today,tropicalrainforestscoveronly6percentoftheEarth'sgroundsurface,buttheyarehometooverhalfoftheplanet'splantandanimalspecies.WhatIsaRainforest?Generallyspeaking,arainf
4、orestisanenvironmentthatreceiveshighrainfallandisdominatedbytalltrees.Awiderangeofecosystemsfallintothiscategory,ofcourse.Butmostofthetimewhenpeopletalkaboutrainforests,theymeanthetropicalrainforestslocatedneartheequator.Theseforestsreceivebetween160and400inchesofrainperyear.Thetotalannualrainfal
5、lisspreadprettyevenlythroughouttheyear,andthetemperaturerarelydipsbelow60degreesFahrenheit.Thissteadyclimateisduetothepositionofrainforestsontheglobe.BecauseoftheorientationoftheEarth'saxis,theNorthernandSouthernhemisphereseachspendpartoftheyeartiltedawayfromthesun.Sincerainforestsareatthemiddleo
6、ftheglobe,locatedneartheequator,theyarenotespeciallyaffectedbythischange.Theyreceivenearlythesameamountofsunlight,andthereforeheat,allyear.Consequently,theweatherintheseregionsremainsfairlyconstant.Theconsistentlywet,warmweatherandamplesunlightgiveplantlifeeverythingitneedstothrive.Treeshavethere
7、sourcestogrowtotremendousheights.andtheyliveforhundreds,eventhousands,ofyears.Thesegiants,whichreach60to150ftintheair,formthebasicstructureoftherainforest.Theirtopbranchesspreadwideinordertocapturemaximumsunlight.Thisc
