现代大学英语听力 unit ppt课件.ppt

1Unit02AnimalsandPets TeachingObjectives Understandwhatanimalsarebeingdescribed GettoKnowmoreaboutanimals Gettoknowmoreabouthowmanandanimalsco exist Learntolistenforusefulinformation Warming upactivities SpeakoutasmanyanimalsasyoucaninEnglish Whichanimaldoyoulikebest Why Haveyoueverraisedapet Whatarethepositiveandnegativeeffectsofhavingapet TheChineseZodiac 鼠 Rat牛 Ox虎 Tiger兔 Hare龙 Dragon蛇 Snake马 Horse羊 Sheep猴 Monkey鸡 Rooster狗 Dog猪 Boar Positiveandnegativeeffectsofhavingapet Thepositiveeffects CaringapetcanmakepeoplehappierandhealthierIncreasingexercises Providingcompanionship Helpingmeetingnewpeople petstores clubs Reducinganxiety Helpingpeoplefindingmeaningandjoyinlife Thenegativeeffects Money consuming food clothes vaccination etc Bringingharmtopeople shealth ListeningAids 1 alien e li n n 1 apersonwhocomesfromaforeigncountry2 beingfromanotherworld外星人2 culture n agroupofcellsgrownformedicalorscientificstudy培养的细菌3 vaccine v ksi n n 疫苗developasmallpox polio rabies etcvaccine培养天花 小儿麻痹症 狂犬病等的疫苗4 trunk n 1 longnoseofanelephant 2 mainstemofatree fromwhichthebranchesgrow树干5 tusk n apairoflongteethofcertainanimals egtheelephant walrusandwildboar 长牙6 twig n asmallbranchordivisionofabranch trunkbranchtwig Task01Key A1 Elephants2 Chimpanzees3 Giraffes4 Penguins5 Kangaroos6 Zebras7 PolarBearsB1 TheyliveinAfricaandIndia Theyhavefourlegsandatail 2 Theirarmsareverylongandtheyhavebigears NamesofWildLives 鹿狐袋鼠鲸长颈鹿海豚猎豹斑马熊海豹 DeerFoxKangaroo k g ru WhaleGiraffe d r f Dolphin d lf n Cheetah t i t Zebra zibr zebr BearSeal si l Names 豹Cheetah猎豹Panther黑豹英 p n r 美 p n Puma美洲豹英 pju m 美 pu m Leopard金钱豹 花豹 lep d 猩猩orangutan猩猩英 r u t n 美 o r u t n chimpanzee黑猩猩 t mp n zi gorilla大猩猩 g r l 鳄鱼alligator短吻鳄 l ge t r crocodile非洲鳄 WildLives WildLives Keywords trunktusk1 Elephants Keywords armsandlegs notails climbers intelligent 2 Chimpanzees英 t mp n zi 美 t mp n zi p n t m p nzi Keywords Africa longneck eatleavesandtwigs3 Giraffes Keywords coldcountries wings swimmer blackandwhite4 Penguins pe gw n Keywords Australia shortfrontlegs pouch5 Kangaroos k g ru Keywords Africa blackandwhitestripes6 Zebraszebracrossing斑马线 Keywords verycoldcountries strong whitecoat7 Polarbears Speed Task02 A1 Thecheetah 2 170km h 3 Morethan100km h 4 Becausemostanimalsrunonfourlegs 5 Becausewehavemachines B1 F 2 F 3 T Dinosaurs Task3 A1 Climate lackoffoodandaliensfromouterspacemightberesponsiblefortheirextinction 2 No B b Ithoughtithadsomethingtodowiththeclimate Thetemperaturemighthavegottencoolerandkilledthemoff a Yeah that sonetheory Anotherideaisthattheymayhaverunoutoffood b Uh huh Andyouknow there evenatheorythattheycouldhavebeendestroyedbyaliensfromouterspace DinosaurExtinction Task3Whythedinosaursdisappeared Isthereanydinosaurintheworld Task04 1 Themayfly Afewhours 2 Theyjustdotwothings findingamateandproducingyoung 3 Wecouldjudgebyitsgrowthrings 4 Itwaskeptfor152years Whatanimalhastheshortestlife Themayfly Afewhours Whichanimalhasthelongestlife TheArcticclams北极蛤 220years俗名 冰岛鸟蛤 时代 白垩纪晚期 全新世 分布 欧洲 北美洲 壳从椭圆形至心形都有 厚实平滑 其口转向更短的前端 每瓣上 嘴的下方均有3颗齿 其后有一长侧齿 主齿前方的板凹入呈小扇状 LifeSpan AnimalsinMedicalExperiments Task05 APeoplehavedifferentopinionsonusinganimalsforresearch B 1 Thecaseforusinganimalsinresearch a Everydruganyonetakestodaywastriedfirstonanimals b Futuremedicalresearchisdependentontheuseofanimal c Medicalresearchisalsoagoodwayofusingunwantedanimals Task05 2 Thecaseagaistusinganimalsinresearch a Animalssufferalotduringtheexperiments b Muchoftheresearchisunnecessary c Animalshavethesamerightsashumansdo 3 Somealternativewaysforscientiststodotheirresearch a Usingcellculture b Usingcomputermodeling Task05Script EveryyearaobutseventeenmillionanimalsareusedinLaboratoryexperiments Butinmanycountriestoday adifficultquestionisbeingasked dowehavetherighttouseanimalsthisway Peoplewhoareforusinganimalsinresearcharguethattheuseofanimalsinmedicalresearchhasmanypracticalbenefits Animalresearchhasenabledresearcherstodeveloptreatmentsofrmanydiseases suchasheartdiseaseanddepression Itwouldnothavebeenpossibletodevelopvaccinesfordiseaseslikesmallpoxandpoliowithoutanimalresearch Everydruganyonetakestodaywastriedfirstonanimals Futuremedicalresearchisdependentontheuseofanimals Whichismoreimportant thelifeofaratorthatofathree year oldchild Medicalresearchisalsoanexcellentwayofusingunwantedanimals Lastyear overtwelvemillionanimalshadtobekilledinanimalsheltersbecausenobodywantedthemaspets Task05Script Howeverthosewhoareagainstitpointoutthatthefactthathumansbenefitcannotbeusedtojustifyusinganimalsinresearchanymorethanitcanbeusedtojustifyexperimentingonotherhumans Animalssufferalotduringtheseexperiments Theyareforcedtoliveinsmallcages andtheymaybeunabletomove Muchofthereaearchthatiscarriedoutunnecessaryanyway Animalshavethesamerightsashumansdo tobeabletomovefreelyandnottohavepainorfearforcedonthem Researchersmustfindotherwaysofdoingtheirresearch usingcellcultureandcomputermedeling Thereshouldbenoanimalsinresearchlaboriatoriesatall TigerCub Task06 A 1 No 2 Becausezooofficalswanthimtoproducecubswithanotherfemaletiger sotheydon twanthimtobecometoointerestedinthisfamily B 1 Theyoungtigersarefourmonthsold 2 Eachofthemweighsabout13kilograms 3 Theyeathorsemeatanddrinktheirmother smilk 4 PeoplewithcomupterscanseethedailylifeoftheseteigersbyvisitingtheNationalZoo sWebsiteat C 1 C 2 C 3 B Task06Script VisitorstotheNationalZooinWashingtonD C canseethreenewyoungtigers Therarebabiesmetthepublicforthefirsttimelatelastmonth ChipO Nealtellsusaboutthem Themothertigersatnearbyonthegrassasherbabiesrolled chasedandbiteachotherplayfully ThenKorenchyalsojumpedintothegames Hercubswerebornatthezoofourmonthsago TheyarecalledMike EricandChrisy ThenewyoungtigersattheNationalZooeachweighabout13kilograms Theirfurisdarkorangewithblackstripes TheyeathorsemeatanddrinkmilkfromKorenchy KorenchyandherbabiesareSumatrantigers SumatrantigerscamefromtheIndonesianislandofSumatran Theyarenowindangerofdisappearingfromtheearth Fewerthan500ofthesetigersremainintheworld Thatincludesabout60livinginzoosinNorthAmerica Task06Script KorenchycametotheNationalZoofromtheJakartaZooinIndonesia ThegirlwaspartoftheSumatranTigerSpeciesSurvivalProgram Korenchyhasgivenbirthtolivecubsthreetines ThefatherofhernewcubsisRokan aSumatrantigerwhoarrivedtwoyearsagofromanotherzoo KorenchyandRokanhadtheirbabiesthenaturalwayinsteadofthescientificmethodoftenusedtoproduceyounganimalsinzoos AwirefenceseparatesRokanfromhisbabies ZooworkerswhocareforRokansayhereachesthroughthefencetowashthecubswithhistongue TheysaythismeansherecognizesMike EricandChrisyashiscubs However zooofficialsarehopingthatRokanwillproducemorecubswithanotherfemaleSumatrantigeratthezoo sotheydonotwanthimtobecometoointerestedinthisfamily TheNationalZoohopestokeeptheSumatrantigercubsforatleast18monthsbeforesendingthemtoOtherzoos Thatisabouttheagewhenmosttigercubsinthewildleavetheirmothers TheNationalZoohasplacedcamerasintheSumatrantigers livingarea sopeoplewithcomputerscanseethem Todothis useyourcomputertofindtheNationalZoo sWebsiteatwww si edu natzoo CatsandDogs Task07 A 1 Catshavebeenmorepopular becausetherearemorepetcatsinAmericanhomes 2 About8 000years3 TheyprobablyarrivedintheUnitedStatesfromEurope 4 No B 1 Thecareofcatshasbecomeabigbusiness becausecatowners a buytonsoffoodespeciallypreparedforcats b buytoysandotherequipment c buythingswithimagesofcatsonthem d burytheirdeadpetsinspecialburialgrounds Task07 B 2 Peoplewhoprefercatssaycats a givetheirownerspleasure b needlesscare c sufferlessfrombeingalone d aremoreindependent C 1 F 2 F 3 T 4 F 5 F Task07Script Anoldexpressionsays Man sbestfriendishisdog Today however itseemsthatcatshavereplaceddogsasthemostpopularpetsinAmericanhomes Americanshavemorethansixty twomillionpetdogs Butevenmorecats morethansixty fourmillion liveinAmericanhomes Thesepetcatsmayhavelonghairorshorthair Theyaredifferentcolorsandsizes Somearecostlyanimalsthattakepartincompetitions ManymorearecommonAmericanmixturesofseveralkindsofcats Mosthousecatsliveagoodlife Theyarenotexpectedtoworkfortheirfood Instead theyruletheirhomeslikefurrykingsandqueens Theywaitfortheirownerstoservethem Americansareincreasinglyseriousabouttheircats Theseconcernshavemadethecareofcatsintobigbusiness Eachyear cat ownersbuytonsoffoodespeciallypreparedforcats Theybuytoysandotherequipment Theybuyjewelryandclothesforthemselveswithimagesofcatsonthem Someownersevenburytheirdeadpetsinspecialburialgrounds Task07Script Humanshavelovedandrespectedcatsforcenturies Scientistshaveevidencethatcatsandpeoplelivedtogetheraslongaseight thousandyearsago Thesmallhousecatwasonceahighlyhonoredanimal InancientEgypt forexample peoplewhokilledacatcouldbepunishedbydeath EarlyinAmericanhistorycatswerenottreatedasgods however TheyprobablyarrivedintheUnitedStateswithsettlersandtradersfromEurope Thesecatsworked Theykilledratsandmice Sometimes Americansmistreatedtheircats Duringtheearlydaysofthenation religiousextremistsbelievedthatsomecatswereworkingforthedevil Blackcatswereespeciallysuspectedofbeingevil Later Americanfamilieswhohadenoughfoodbegantakingcatsintotheirhomes Peoplecaredforthecatsbecausetheanimalsgavethempleasure Thecatsthankedpeopleforfeedingthembymakingapurringsound Thispleasantnoiseusuallymeansacatishappy Task07Script Animalexpertsofferseveralreasonswhycatshavebecomesopopularashousepets Theysaycatsneedlesscarethandogs Andcatsdonotseemtosufferasmuchasdogsfrombeingaloneiftheownersareaway Still millionsofotherpeopledonotlikecatsatall Theysaydogsarebetterandmorelovingpets Theysaycatsdonothavemuchfeeling Theybelievecatsstaywithpeopleonlytobefed Catownersdefendtheirpetsagainstsuchcriticism Theysaycatsarejustmuchmoreindependentthandogs Astudentofa