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雅思寫作機(jī)經(jīng)一、考試時(shí)間:20140710Task1:Task2: TaskThediagramsbelowshowthewayinwhichsanddunes*are ??*Sanddune:sandgraduallyformedindeserts/onSand
WetSandTheflowchartshowsthedynamicprocessofsandduneformationindesertsoroncoasts.Itinvolvestheinctionbetweenwindandsand.Indrydesertsoroncoasts,therearescatteredpatchesofwetsandwheresandduneisgroundedon.Windconsistentlyblowsfromonedirection,accumulatingdryloosesandparticlesonwetsandwhererelativelyhigherfrictionofthelandpreventssandmoving.Butwithstrongerwind s,themobilityofsandincreases.Whilethedrysandcontinuetopileup,someofthemmovedownwinduntiltheyreachanotherwetpieceofEvenwiththe ofgentlebreeze,sandpilesonwetlandcankeepdrygrainssettledownandhencegrowintodunes.Ontheleeside,adunecanextendoutofthewetgroundafewfeetduetotheshelterofthedune.Duetothedirectionandspeedofwindsaswellastheareaofwetgrounds,dunesareformedindiverseshapesandsizes. TaskSomecountriesachieveinternationalsportingsuccessbybuildingspecializedfacilitiesonlyforthetrainingoftopathletes,insteadofprovidingfacilitiesthateveryonecanuse.Doyouthinkthisisapositiveornegativedevelopment? 22補(bǔ)給丌Internationalsportsevents,typicallyOlympicGamesorFootballWorldCup,ignitetheaudience’senthusiasmforgoldmedalsandsportsaswell.However,insomecountriestheinvestmentforthosereputationandgloryisenormous,includingconstructingspecializedsportsfacilitiesforsportsmentraining.Incomparison,communitysportsconstructionforordinarypeopleisquitelimited.Theinvestmentinathleticelitesseemsworthwhileforanation.Thenumberofmedalsrepresentsstateimageattheinternationalsportsstageandthepowerofanation.showeditsstrengthtotheworldintheBeijingOlympicGamesbyrankingtoponthemedallist.Thisgloryinspiredthenationalprideofeverycitizen,whichisconducivetobuildamorecohesivecountry.Anothercontributionthatsportselitesmakeisthattheiroutstandingperformancespursthespectatorsontotakepartinsportsactivities,hencepromotingthepublichealth.However,thesepositiveeffectscanbedilutedwhenenlightenedaudiencegoouttoworkoutbutunfortuna yhardlyfindnowheretodosuchathing.Whentheexpendituregapbetweenathletetrainingfacilitiesandcommunitycounterpartiswide,thedisadvantageswouldemerge.Lackofsportsequipmentwouldleadtoinsufficientinvolvementofphysicalexercisesandlowerhealthlevelofcitizens.Accordingly,notonlymaymedicalcareexpensesincrease,buttheproductionefficiencycanalsodrop.Anotherdrawbackofignoringgrassrootssportsactivitiesisinsufficientsportstalentpool,resultinginnarrowerbaseforsportsprofessionals.Fromapolitical,obviousprejudicetowardssportstalentsratherthanthecommonpeopleunfairtotheordinarytaxpayers,andthecomintarousedmaycounterbalancethepatriotismevokedbytheirchampions.Toconclude,internationalsportingeventsareinitiatedtospreadsportsspirits,andrankingsarenotthepriority,atleastshouldnotbetheonlyfocusofth
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