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大学英语四级听力考试日常训练.docx

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大学英语四级听力考试日常训练大学英语四级听力考试日常训练【听力材料】ThefuturehasarrivedatadairyfarmaboutinanhourbycarfromWashingtonD.C.Arobotismilkingcows.ItismilkingtimeatWoodbourneCreameryinMt.Airy,Maryland.Thecowsarestandinginlineforaturnattherobot.JohnFendrickistheownerofthefarm.Heinspectstheprogressoftheanimalsbylookingatacomputerscreen.Thatisallhehastodo."Thedoorofthemilkopensup,theywalkin,theygetmilked.Thedooropensup,theywalkout."JohnFendrickcheckstheprogressonthescreen.Therobotdoesallthework.Itusesalasertofindeachteat--theplaceonthecowwherethemilkcomesout.Therobotthencleanstheteatandconnectsamilkingtubetoit.Therobotalsoteststhemilkforpossiblecontamination.Ifitfindsaproblem,itrejectsthemilk.Whentheamountofmilkcomingoutofthecowslows,themachineknowstostop,andsendsthecowonitsway.MilkingrobotsarebecomingpopularamongdairyfarmersintheUnitedStates,EuropeandAustralia.JohnFendricksaystherobotshavechangedlifeonadairyfarm."Youaregivingthefreedomback.Soitallowsmeorthepeopleworkformetoactuallydootherthingsonthefarm."Mostdairyfarmersmustmilktheircowstwotimesaday,earlyinthemorningandlateatnight.Theanimalsaremilkedeverydayingoodweatherorbad.ButMrFendrick'scowsdonotfollowsuchschedule,theystayinthefielduntiltheywanttobemilkedbytherobot.Someofthemcometobemilkedinthemiddleofthenight.MrFendrickdoesn'tevenneedtobetheretowatchhiscowsbemilked.Hecanwatchfromhistelephone.Hecanlearnwheneachcowwasmilkedandhowmuchsheproduced.Hecanalsolearnifacowhasnotbeenmilkedforalongtime.Thecowmilkingrobotisnotlowcosttechnology.MrFendrickpaidmorethan$150,000forit.Buthenotes,payingsomeonetomilkthecowsisalsocostly."Inthreeyears,Iwillhavepaidoffthedifferencewiththis,andIdon'thavetobethepersonwho'salwaysoncalltomilk.Thefactthatwehavealife,andourcowsareabletofunctionwithoutus--tous,it'swellworththemoney."Andhesaysthatisagoodthing."Idon'tliketomilk."Withtherobot,hecanturnhisattentiontootherthings.Hegetsabout475litersofmilkaday,andheneverhastotouchacow.Andthat'stheAgriculture