高二英语限时训练九 牛津版.doc

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1、高二英语限时训练九ＡDomestic(驯养的)horsesnowpullploughs,raceintheKentuckyDerby,andcarrypolice.Butearlyhorsesweren’ttame(驯服的)enoughtoperformthesekindsoftasks.Scientiststhinkthefirstinteractionshumanshadwithhorseswerefardifferentfromthosetoday.Thousandsofyearsago,peoplekilledthewildhorsesth

2、atlivedaroundthemforfood.Overtime,peoplebegantocatchtheanimalsandraisethem.Thiswasthefirststepindomestication.Aspeoplebegantotameandridehorses,theychosetokeepthoseanimalsthathadmoredesirablecharacteristics.Forexample,peoplemayhavechosentokeephorsesthathadagentlepersonalitysoth

3、eycouldberiddenmoreeasily.Peoplewhousedhorsestopullheavyloadswouldhavechosentokeepstrongeranimals.Characteristicslikestrengtharepartlycontrolledbytheanimals’genes.Soasthedomesticatedhorsesreproduced,theypassedthecharacteristicsontotheiryoung.Eachnewgenerationofhouseswouldshowm

4、oreofthesechosencharacteristics.Moderndayhorsebreedscomeinawidevarietyofshapesandsizes.Thisvarietydidn’texistinthehorsepopulationbeforedomestication.TheShetlandhorseisoneofthesmallestbreeds—typicallyreachingonlyonemetertall.Withshort,stronglegs,theanimalswerebredtopullcoalouto

5、fmineshafts(矿井)withlowceilings.HugehorsesliketheClydesdalecameonthescenearound1700.Peoplebredtheseheavy,tallhorsestopulllargevehiclesusedforcarryingheavyloads.Thedomesticationofhorseshashadgreateffectsonsocieties.Forexample,horsewereimportanttoolsintheadvancementofmodernagricu

6、lture.Usingthemtopullploughsandcarryheavyloadsallowedpeopletofarmmoreefficiently.Beforetheywereabletoridehorses,humanshadtocrosslandonfoot.Ridinghorsesallowedpeopletotravelfargreaterdistanceinmuchlesstime.Thatencouragedpopulationslivingindifferentareastointeractwithoneanother.

7、Thenewfromofrapidtransportationhelpedculturesspreadaroundtheworld.１.Beforedomesticationhorseswere______.A.caughtforsportsB.huntedforfoodC.madetopullploughsD.usedtocarrypeople２.TheauthorusestheShetlandhorseasanexampletoshow______.A.itissmallerthantheClydesdalehorseB.horseusedto

8、havegentlepersonalitiesC.somehorseshavebettershapedthanothers