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1、雅思写作高分范文6篇（一）modelanswer:Thethreegraphsofwheatexportseachshowaquitedifferentpatternbetween1985and1990.ExportsfromAustraliadeclinedoverthefive-yearperiod,whiletheCanadianmarketfluctuatedconsiderably,andtheEuropeanCommunityshowedanincrease・In1985,Austral
2、iaexportedabout15millionsoftonnesofwheatandthefollowingyearthenumberincreasedbyonemilliontonnesto16million.Afterthat,however,therewasagradualdeclineuntil1989and1990whenitstabilisedatabout11milliontonnes.Overthesameperiod,theamountofCanadianexportsvarie
3、dgreatly・Itstalledat19milliontonnesin1985,reachedapeakin1988of24million,droppeddramaticallyin1989to14milliontonnesandthenclimbedbackto19millionin1990・SeventeenmilliontonneswereexportedfromtheEuropeanCommunityin1985,butthisdecreasedto14milliontonnesin19
4、86andthenroseto15millionin1987and1988beforeincreasingoncemoreto20millionin1990.（二）Wildanimalshavenoplaceinthe21stcentury,andtheprotectionisawasteofresources.Towhatextentdoyouagreeordisagree?Thecurrentglobalextinctioncrisisisoneofthegreatestchallengespo
5、sedbytherapidexpansionofhumanpopulations・Theprotectionofendangeredspecies,asfarasIcansee,shouldbeatoppriorityforthreemainreasons:economicvalue,scientificvalue,andsurvivalvalue・Wildanimalsprovidemanyvaluablesubstances,suchasmeat,skinsandfurs.Thefinancia
6、lvalueofwildspeciesisimportanttotheeconomiesofmanynations.Inmanycountriestherecreationalviewingofanimalsatzoosisalsoasourceofrevenue・Thestudyofwildlife,ontheotherhand,providesvaluableknowledgeaboutvariouslifeprocesses.Suchstudyhashelpedscientistsunders
7、tandhowthehumanbodyfunctionsandwhypeoplebehaveastheydo.Scientistshavealsogainedmedicalknowledgeanddiscoveredimportantmedicalproductsbystudyingwildlife.Inaddition,byobservingtheeffectofenvironmentalpollutiononwildanimals,scientistshavelearnedhowpollutio
8、naffectshumanlife.Furthermore,everyspeciesofwildlifeplaysaroleinhelpingmaintainthebalanced,livingsystemsoftheEarth・Thesesystemsmustcontinuetofunctioniflifeistosurvive.Thus,thelossofanyspeciescanthreatenthesurvivalofalllife,includinghuma
