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2019-2020年高考英语一轮复习Unit4Globalwarming话题新人教版选修Globalwarmingcouldmakehumansshorterwarnscientistswhoclaimtohavefoundevidencethatitcausedtheworld’sfirsthorsestoshrunknearly50millionyearsago. InfactateamfromtheuniversitiesofFloridaandNebraskasaysithasfoundalinkbetweentheearthheatingupandthesizeofmammals—horsesinthiscasethelasttimetheworldheatedup.Thescientistsusedfossilstofollowtheevolutionofhorsesfromtheirearliestappearance56millionyearsago. Astemperatureswentuptheirsizewentdownandviceversa;atonepointtheywereassmallasahousecatsaidDr.JonathanBlochcuratoroftheFloridamuseumofnaturalhistorywasquotedbythe"dailymail"assaying.Thescientistssaythatthecurrentwarmingcouldhavethesameeffectonmammals—andcouldevenmakehumanssmaller. "Horsesstartedoutsmallaboutthesizeofasmalldoglikeaminiatureschnauzer.what’ssurprisingisthataftertheyfirst...。