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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 PartⅡReadi
2、ngComprehension(SkimmingandScanning)(15minutes)Directions:Forquestions1to4,markY(forYES) ifthestatementagreeswiththeinformationgiveninthepassage;N(forNO) ifthestatementcontradictstheinformationgiveninthepassage;NG(forNOTGIVEN) i
3、ftheinformationisnotgiveninthepassage.Forquestions5to10,completethesentenceswiththeinformationgiveninthepassage. RainforestsTropicalrainforestsarethemostdiverseecosystem(生态系统)onEarth,andalsotheoldest.Today,tropicalrainforestscoveronly6percentoftheEarth'sgrounds
4、urface,buttheyarehometooverhalfoftheplanet'splantandanimalspecies.WhatIsaRainforest?Generallyspeaking,arainforestisanenvironmentthatreceiveshighrainfallandisdominatedbytalltrees.Awiderangeofecosystemsfallintothiscategory,ofcourse.Butmostofthetimewhenpeopletalka
5、boutrainforests,theymeanthetropicalrainforestslocatedneartheequator.Theseforestsreceivebetween160and400inchesofrainperyear.Thetotalannualrainfallisspreadprettyevenlythroughouttheyear,andthetemperaturerarelydipsbelow60degreesFahrenheit.Thissteadyclimateisduetoth
6、epositionofrainforestsontheglobe.BecauseoftheorientationoftheEarth'saxis,theNorthernandSouthernhemisphereseachspendpartoftheyeartiltedawayfromthesun.Sincerainforestsareatthemiddleoftheglobe,locatedneartheequator,theyarenotespeciallyaffectedbythischange.Theyrece
7、ivenearlythesameamountofsunlight,andthereforeheat,allyear.Consequently,theweatherintheseregionsremainsfairlyconstant.Theconsistentlywet,warmweatherandamplesunlightgiveplantlifeeverythingitneedstothrive.Treeshavetheresourcestogrowtotremendousheights.andtheylivef
8、orhundreds,eventhousands,ofyears.Thesegiants,whichreach60to150ftintheair,formthebasicstructureoftherainforest.Theirtopbranchesspreadwideinordertocapturemaximumsunlight.Thisc
