现代大学英语听力1原文.docx
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现代大学英语听力1原文.docx
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现代大学英语听力1原文
Unit2
Task1
【原文】
1)TheyliveinAfricaandIndia.Theyhavefourlegsandatail.Theyareverybigandverystrong.Theyareintelligent,too.Theyhaveatrunkandsomeofthemhavetusks.Theysometimeslivefor70years.
2)TheyliveinAfricaandAsia.Theyarebrown.Theyhavearmsandlegs,buttheydon’thaveatail.Theirarmsareverylongandtheyhavebigears.Theyaregoodclimbers.Theyareveryintelligent,too.
3)TheyliveinAfrica.Theyareverytall.Theyhavefourlegs,atailandaverylongneck.Theyeatleavesandtwigs.Theycanrunveryfast.Theyarebrownandwhite.
4)Theyliveinverycoldcountries.Theyhavewings,buttheycan’tfly.Theyaregoodswimmers.Theyeatfish.Theyareblueandwhiteorblackandwhite.
5)TheyliveinAustralia.Theyareredorgray.Theyhaveshortfrontlegs,longbacklegsandaverylongtail.Thebacklegsandthetailareverystrong.Theycanrunveryfast.Thefemalescarrytheiryounginapouch.
6)TheyliveinAfrica.Theyhavefourlegsandatail.Theyhaveabeautifulcoatwithblackandwhiteorbrownandwhitestripes.Theyeatgrassandplants.
7)Theyliveinverycoldcountries.Theyhavefourlegs.Theyareverybigandverystrong.Theyhaveawhitecoat.Theycanswim.Theyeatsealsandfish.
Task2
【原文】
Thefastestanimalonlandisthecheetah.Itcanrunataspeedofabout100kilometresanhour.Thefastestbirdintheworldcanflyat170km/h,andthefastestfishcanswimatmorethan100km/h.
Humanbeingsarenotveryfast.Thefastestmanintheworldcanonlyrunatabout40km/h.
Manyanimalscanrunfasterthanthis.Butmostanimalsrunonfourlegs.Fourlegsarebetterthantwo,aren’tthey?
Whydoweonlyhavetwolegs?
Scientistssaythatwearemoreintelligentthanotheranimalsbecausewestandontwolegs,sowecanuseourhandsforotherthings.Wecanpickthingsupwiththem.Wecanusetools.Humanbeingshaveusedtoolsformillionsofyears.Thatiswhyourbrainshavedeveloped.Thatiswhywehavebecomethemostintelligentanimalsintheworld.
Inthepastfewyears,wehavemadeallkindsofmachines.Wehavemadecars,ships,aeroplanesandspacecraft.Inthesemachineswecantravelfasterthananyanimal—byland,bysea,orbyair.Wecanevengotothemoon.Nootheranimalhaseverdonethat!
Task3
【原文】
A:
Youknow,we’restudyingdinosaursinscienceclass.It’sreallyinteresting.
B:
Oh,yeah?
Hey,haveyoulearnedwhythedinosaursdisappeared?
A:
Well,nooneknowsforsure.
B:
Ithoughtithadsomethingtodowiththeclimate.Thetemperaturemighthavegottencoolerandkilledthemoff.
A:
Yeah,that’sonetheory.Anotherideaisthattheymayhaverunoutoffood.
B:
Uh-huh.Andyouknow,there’sevenatheorythattheycouldhavebeendestroyedbyaliensfromouterspace.
A:
Thatsoundscrazytome!
Task4
【原文】
Fortheshortestlife,thefirstprizemustgotothemayfly,whichtypicallylivesonlyamatterofafewhoursafteritemergesfromitsshell.Fewmayflieslivetoseethesunriseagain.Thesecreaturesdevotetheirwholelivestoasingledesperatemission:
findingamateandproducingyoung.Theydon’tevenhavefunctionalmouthsandstomachs.Theysimplyhavenotimetoeat.Infacttheyhavenotimeforanythingelse.
Therecord-holderforthelongestlifemaybetheArcticclam,oneofwhichlivedquietlyunderwaterfor220years.Howeveritdidnothaveanybirthcertificatetoprovethis.Onecouldonlyjudgebyitsgrowthrings.
Ifyouinsistonbetterdocumentation,theoldestanimaleverwasprobablyatortoisethatdiedin1918.Ithadbeencapturedalreadyfull-grownin1766,nineyearsbeforetheAmericanRevolutionbegananditdied152yearslaterasWorldWarIcametoaclose.
Task5
【原文】
Everyyearabout17millionanimalsareusedinLaboratoryexperiments.Butinmanycountriestoday,adifficultquestionisbeingasked:
Dowehavetherighttouseanimalsinthisway?
Peoplewhoareforusinganimalsinresearcharguethattheuseofanimalsinmedicalresearchhasmanypracticalbenefits.Animalresearchhasenabledresearcherstodeveloptreatmentsformanydiseases,suchasheartdiseaseanddepression.Itwouldnothavebeenpossibletodevelopvaccinesfordiseaseslikesmallpoxandpoliowithoutanimalresearch.Everydruganyonetakestodaywastriedfirstonanimals.
Futuremedicalresearchisdependentontheuseofanimals.Whichismoreimportant:
thelifeofaratorthatofathree-year-oldchild?
Medicalresearchisalsoanexcellentwayofusingunwantedanimals.Lastyear,over12millionanimalshadtobekilledinanimalsheltersbecausenoonewantedthemaspets.
Howeverthosewhoareagainstitpointoutthatthefactthathumansbenefitcannotbeusedtojustifyusinganimalsinresearchanymorethanitcanbeusedtojustifyexperimentingonotherhumans.Animalssufferalotduringtheseexperiments.Theyareforcedtoliveinsmallcages,andtheymaybeunabletomove.
Muchoftheresearchthatiscarriedoutisunnecessaryanyway.
Animalshavethesamerightsashumansdo—tobeabletomovefreelyandnottohavepainorfearforcedonthem.Researchersmustfindotherwaysofdoingtheirresearch,usingcellcultureandcomputermodeling.Thereshouldbenoanimalsinresearchlaboratoriesatall.
Task6
【原文】
VisitorstotheNationalZooinWashingtonD.C.canseethreenewyoungtigers.Therarebabiesmetthepublicforthefirsttimelatelastmonth.ChipO’Nealtellsusaboutthem.
Themothertigersatnearbyonthegrassasherbabiesrolled,chasedandbiteachotherplayfully.ThenKorenchyalsojumpedintothegames.Hercubswerebornatthezoofourmonthsago.TheyarecalledMike,EricandChrisy.ThenewyoungtigersattheNationalZooeachweighabout13kilograms.Theirfurisdarkorangewithblackstripes.TheyeathorsemeatanddrinkmilkfromKorenchy.
KorenchyandherbabiesareSumatrantigers.SumatrantigerscamefromtheIndonesianislandofSumatra.Theyarenowindangerofdisappearingfromtheearth.Fewerthan500ofthesetigersremainintheworld.Thatincludesabout60livinginzoosinNorthAmerica.
KorenchycametotheNationalZoofromtheJakartaZooinIndonesia.ThegirlwaspartoftheSumatranTigerSpeciesSurvivalProgram.Korenchyhasgivenbirthtolivecubsthreetines.ThefatherofhernewcubsisRokan,aSumatrantigerwhoarrivedtwoyearsagofromanotherzoo.KorenchyandRokanhadtheirbabiesthenaturalwayinsteadofthescientificmethodoftenusedtoproduceyounganimalsinzoos.
AwirefenceseparatesRokanfromhisbabies.ZooworkerswhocareforRokansayhereachesthroughthefencetowashthecubswithhistongue.TheysaythismeansherecognizesMike,EricandChrisyashiscubs.However,zooofficialsarehopingthatRokanwillproducemorecubswithanotherfemaleSumatrantigeratthezoo,sotheydonotwanthimtobecometoointerestedinthisfamily.
TheNationalZoohopestokeeptheSumatrantigercubsforatleast18monthsbeforesendingthemtootherzoos.Thatisabouttheagewhenmosttigercubsinthewildleavetheirmothers.TheNationalZoohasplacedcamerasintheSumatrantigers’livingarea,sopeoplewithcomputerscanseethem.Todothis,useyourcomputertofindtheNationalZoo’sWebsiteatwww.si.edu/natzoo.
Task7
【原文】
Anoldexpressionsays,“Man’sbestfriendishisdog.”Today,however,itseemsthatcatshavereplaceddogsasthemostpopularpetsinAmericanhomes.
Americanshavemorethan62millionpetdogs.Butevenmorecats—morethan64million—liveinAmericanhomes.
Thesepetcatsmayhavelonghairorshorthair.Theyaredifferentcolorsandsizes.Somearecostlyanimalsthattakepartincompetitions.ManymorearecommonAmericanmixturesofseveralkindsofcats.
Mosthousecatsliveagoodlife.Theyarenotexpectedtoworkfortheirfood.Instead,theyruletheirhomeslikefurrykingsandqueens.Theywaitfortheirownerstoservethem.
Americansareincreasinglyseriousabouttheircats.Theseconcernshavemadethecareofcatsintobigbusiness.
Eachyear,catownersbuytonsoffoodespeciallypreparedforcats.Theybuytoysandotherequipment.Theybuyjewelryandclothesforthemselveswithimagesofcatsonthem.Someownersevenburytheirdeadpetsinspecialburialgrounds.
Humanshavelovedandrespectedcatsforcenturies.Scientistshaveevidencethatcatsandpeoplelivedtogetheraslongas8000yearsago.Thesmallhousecatwasonceahighlyhonoredanimal.InancientEgypt,forexample,peoplewhokilledacatcouldbepunishedbydeath.
EarlyinAmericanhistorycatswerenottreatedasgods,however.TheyprobablyarrivedintheUnitedStateswithsettlersandtradersfromEurope.Thesecatsworked.Theykilledratsandmice.
Sometimes,Americansmistreatedtheircats.Duringtheearlydaysofthenation,religiousextremistsbelievedthatsomecatswereworkingforthedevil.Blackcatswereespeciallysuspectedofbeingevil.
Later,Americanfamilieswhohadenoughfoodbegantakingcatsintotheirhomes.Peoplecaredforthecatsbecausetheanimalsgavethempleasure.Thecatsthankedpeopleforfeedingthembymakingapurringsound.Thispleasantnoiseusuallymeansacatishappy.
Animalexpertsofferseveralreasonswhycatshavebecomesopopularashousepets.Theysaycatsneedlesscarethandogs.Andcatsdonotseemtosufferasmuchasdogsfrombeingaloneiftheownersareaway.
Still,millionsofotherpeopledonotlikecatsatall.Theysaydogsarebetterandmorelovingpets.Theysaycatsdonothavemuchfeeling.Theybelievecatsstaywithpeopleonlytobefed.Catownersdefendtheirpetsagainstsuchcriticism.Theysaycatsarejustmuc
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