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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(SkimmingandScannin
2、g)(15minutes)Directions:Forquestions1to4,markY(forYES) ifthestatementagreeswiththeinformationgiveninthepassage;N(forNO) ifthestatementcontradictstheinformationgiveninthepassage;NG(forNOTGIVEN) iftheinformationisnotgiveninthepassage.Forquestions5to10,completethes
3、entenceswiththeinformationgiveninthepassage. RainforestsTropicalrainforestsarethemostdiverseecosystem(生态系统)onEarth,andalsotheoldest.Today,tropicalrainforestscoveronly6percentoftheEarth'sgroundsurface,buttheyarehometooverhalfoftheplanet'splantandanimalspecies.WhatIsaRainforest?Generallyspeaking,
4、arainforestisanenvironmentthatreceiveshighrainfallandisdominatedbytalltrees.Awiderangeofecosystemsfallintothiscategory,ofcourse.Butmostofthetimewhenpeopletalkaboutrainforests,theymeanthetropicalrainforestslocatedneartheequator.Theseforestsreceivebetween160and400inchesofrainperyear.Thetotalannua
5、lrainfallisspreadprettyevenlythroughouttheyear,andthetemperaturerarelydipsbelow60degreesFahrenheit.Thissteadyclimateisduetothepositionofrainforestsontheglobe.BecauseoftheorientationoftheEarth'saxis,theNorthernandSouthernhemisphereseachspendpartoftheyeartiltedawayfromthesun.Sincerainforestsareat
6、themiddleoftheglobe,locatedneartheequator,theyarenotespeciallyaffectedbythischange.Theyreceivenearlythesameamountofsunlight,andthereforeheat,allyear.Consequently,theweatherintheseregionsremainsfairlyconstant.Theconsistentlywet,warmweatherandamplesunlightgiveplantlifeeverythingitneedstothrive.Tr
7、eeshavetheresourcestogrowtotremendousheights.andtheyliveforhundreds,eventhousands,ofyears.Thesegiants,whichreach60to150ftintheair,formthebasicstructureoftherainforest.Theirtopbranchesspreadwideinordertocapturemaximumsunlight.Thisc
