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1、Unit4Publictransport一、阅读理解。HIseeyou"vegotabitofwateronyourcoat,'，saidthemanatthepetrolstation.''Isitrainingoutthere?"'''No.it'sprettynice,nIreplied,checkingmysleeve.HOh,right.Apony（马驹）bitmeearlier.11Asithappened,thebitewasvirtuallypainless:morethekin
2、dofsmal1biteyoumightgetfromanaughtychild・Theponyresponsib1ewasqucuingupforsomeicecreaminthecarparknearHaytor,andperhapsthought1’djumpedinaheadofhim.ThereasonwhytheponiesherearenaughtyisthatHaytorisatourist—heavyareaandtouristsareconstmitlyfeedingthep
3、oniesfoods,despitesignsaskingthemnotto.Byfeedingtheponies,touristsincreasetheriskofthemgettinghitbyacar,andmakethemhardertogatherduringthearea"sannualponydrift（迁移）.Thepurposeofaponydriftistogatherthemupsotheirhealthcanbechecked,thebabyonescanbestoppe
4、dfromfeedingontheirmothers'milk,andthosewho"vegonebeyondtheir1imitedareacanbereturnedtotheircorrectarea.Someofthemarealsolatersold,inordertolimitthenumberofponiesaccordingtotherulessetbyNaturalEngland.Threeweeksago,1witnessedasmallnear•一disasterafewm
5、ileswestofhere.Whilewalking,Inoticedaponyrolloveronhisback.HHello!NIsaidtohim,assuminghewasjustrollingforfun,buthewasverysti11and,asTgotcloser,Tsawhimkickinghislegsintheairandbreathingheavily・Ibegantoproperlyworry,abouthim・Fortunately,Imanagedtogetin
6、touchwithaDartmoorsLivestockProtectionofficerandsendheraphoto.Theofficerimmediatelysentalocalfarmerouttocheckonthepony.Theponyhadactuallybeentrappedbetweentworocks.Thefarmerfreedhim,andhebegantorunhappilyaroundagain.Dartmoorhas1,000orsoponies,whoplay
7、acriticalroleincreatingthediversityofspeciesinthisarea・Manypeopleareworkinghardtopreservetheseponies,andtryingtocomeupwithplanstofindasustainable（可持续的）futureforoneofDartmoor"smostfinancially—troubledelements.1.Whyaretouristsaskednottofeedtheponies?A.
8、Toprotectthetouristsfrombeingbitten.B.Tokeeptheponiesoffthepetrolstation.C.Toavoidputtingtheponiesindanger・D・Topreventtheponiesfromfighting.2.Oneofthepurposesofthearmualponydriftis•A.tofeedbabyponiesonmiIkB・tocontrolthenumberofponiesC.toexpandthehabi
