懂你英语Level3Unit3.docx

懂你英语Level3Unit3.docx

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懂你英语Level3Unit3

Unit3-1Listening自然灾害和环境保护

Therearemanyformsoflivesonearth,includinghumanbeings.Lifeexistsinavarietyof

conditions.Someformsoflivesliveinthewateryenvironment,liketheoceans.Otherformsoflivescanbefoundinverydryareaslikedesserts.However,foranyformoflivetoexist,conditionsmustberight.Whentheconditionsaren'rtight,thatformoflivescanextinct.Tobecomeextinctmeanstodieoutcompletely.

Conditionsmustberightforlifetoexist.Millionsofyearsago,therewereformsoflivesthatnolongerexist.Whenconditionchanged,thisformoflifediedout.Oneextinction

eventhappenedabout250millionyearsago.Thisisthelargestextinctioneventofalltime.

Manyformsoflivesbecomeextinct.96%ofalllivesintheoceansdiedout.Mostinsects

alsobecameextinct.Thiseventhappenedoveraperiodofseveralmillionyears.Thecausesofthisextinctioneventarestillunknown.Possiblecausesincludelargestvolcanic

eruptionsandglobalwarming.Somescientistsbelievethattherewereseveralcauses.

Theybelievethataseriesofeventscausedtheextinctions.Scientistsareworkingforbetterunderstandwhatreallyhappened.

Inmoderntimes,wehumanbeingsfacechangingconditions.Forhumanstolive,weneedcleanairandcleanwater.Pollutionisnowagrowingproblemaroundtheworld.Pollutionpoisonstheairandwaterthatwedependon.Pollutedairmakespeoplesickandafraidtogetoutside.Pollutedwaterpoisonsourfoodsupply.Asaresult,weneverknowwhichfoodsaresafetoeat.Humanbeingscanbenotliveinapoisonedenvironment.

Therefore,pollutionisamajorthreattoourexistence.

Humansneedtemperaturetobeinacomfortablerange.Tobeinacomfortablerangemeanstobeneithertoohotnortoocold.Withglobalwarming,globaltemperaturesarerising.Asglobaltemperaturesrise,thepolaricecapswillmelt.Asthepolaricecapsmelt,oceanlevelswillrise.Areasofsomecountrieswillsoonbeunderwater.Peoplewouldbeforcedtorelocatedfromfloodedareas.

Innature,evensmallchangescansometimeshavelargeeffects.It'sdifficulttopredict

what'sgoingtohappen.Theentireecosystemthatwedependonischanging.Someof

thesechangingsareirreversible.Irreversiblechangescannotbeundone.Let'shopethe

humansaresmartenoughtounderstandhowtheworldischanging.Withmoreunderstanding,wemakebetterchoicesaboutwhattodo.Wecanfacethechallengeofthepollutionsandglobalwarming.Weneedtodothisbeforeit'stoolate.Thisplanetofearthisouronlyhomeandweneedtoprotectit.

Unit3-1vocabulary动物和工具

Lizard蜥蜴

Mammalsarecoveredbyhairorfur,haveabackboneandwarm-blooded.Allmammalsproducemilkfortheyoung.

Reptilesarecoveredbys,includessnakes,lizardsandturtles.Reptileshaveabackboneandarecold-blooded,whichmeanstheyoftenrelyontheexternalresourcesofheat.

Birdsarecoveredbyfeatherandarewarmblooded.Mostofthebirdscanflyandmanytypesofbirdmigrategreatdistances.

Mostinsectssuchantsandbeeshaveasmall3partsbodywith3pairsoflegs.Someinsects,suchasmosquitoes,spreaddiseasesthatcausethedeathsofmanyhumans.Unlikeanimals,plantsgettheenergythattheyneedfromthesun.Plantsconvertlight

energyalongwithcarbonandwaterintochemicalenergy.

Scalesandrulersareusedtomeasureweightandlength.Unitsofweightincludeskilogramsandpoundsandunitsoflengthincludescentimetersandinches.

Theseinstrumentsareusedtoobserveverylargeandverysmallobjects.Telescopesare

usedbyastronomersandmicroscopesareusedbybiologistsanddoctors.

Theseappliancesareusedinthekitchensofalmosteveryhome.Stovesareusedtoheat

foodandrefrigeratorsareusedtokeepfoodscoolorcold.

Housetoolslikethese,areusedtobuildorrepairthings.Hammersareusedtopoundinthenailsandscrewdriversareusedtoturnascrew.

Mammalsincludesomeofthemostintelligentanimalsonearth,suchaselephantsandhumanbeings.

Mosquitoescausethedeathofmorehumanthananyotheranimals.

Rulersareusedtomeasurelength

Wecanuseatelescopetoseeobjectsthatarefarway.

Unit3-1dialogue纪念日

Doyouknowwhatdateisittoday?

Whatdoyoumean,it'sthespecialday?

Oh,soyoudon'tremember.

Rememberwhat?

What'sthespecial?

It'souranniversary.Westarteddatingayearagotoday.

Oh,really.Sorry.

Justaminute,whatdoyouthinkthisis.

Oh,it'sneacklace.

Doyoulikeit?

Yes,Ido.It'slovely.Especiallytheredheart.MayIputiton?

No,letmedoit.

Soyoudidremember.

OfcourseIremember.It'sveryspecialforbothofus.

Ihavesomethingforyoutoo.

Youdo?

Yes,butyouhavetowaituntillater.

Oh,Ican'twait.Tellmewhatisit.

Canyouguesswhatitis?

Couldyougivemeah?

Wewentthere3monthsago.

Yes,areyouexcited?

Yousaidyoureallylikethefoodthere.

Yes,that'strue.Ialsorememberedthedessert.Doyou?

Yes,butlet'snottalkaboutthatnow.let'snowviewinthesurprise.

Thatrestaurantlooksnice.

Yes,butitlooksexpensive.

Let'sgoinandlookatthemenu.

Wow,themenulooksgreat,especiallythefish.

Yes,itlooksgoodbutlookatthoseprices.

Let'strysomewhereelse.

Sometimeit'soktospendalittlemoney.

Yes,butthispriceisabittoohigh.Don'tyouthink?

Yes,theyareabithigh.Butdon'tyouthinkitworth?

Let'senjoyourselves.

Em,ok,ifyouputitthatway.Let'sseeifwecantakethetable.

I'vegotyouhaveacreditcard.

Isurehopethefoodisgood.

Stopworrying,let'sjustenjoy.

Unit3-2Listening快速服务维修公司

Quickserveisahomerepaircompany.Itprovidesquick,reliablerepairservicestohomes.

Quickservehandlesplumbingandelectricalissues24hoursaday.Italsocleanstheroofs,fixesinternetconnectionsandreplacesbrokenwindows.Forasmallfee,customerssubscribetotheservice.Itsmaincustomersareelders,whichmeansolderpeople.Whenevercustomershaveproblems,theycancallforhelp.Thereisalsosmallchargeforeachservicecall.

Thecompanywasestablished5yearsagoandisgrowingrapidly.Itstartedin1citybutit'snoiwn5cites.Thecompanyplanstoexpandto10citieswithinthenext24months.Ineachcity,thereissmallcentralofficeinalowrentareaofthecity.Thecentralofficehandlesthebusinesses,advertising,payrollandbilling.Italsotakescallsbycustomer

eitheronlineorbytelephone.Ittakescall24hoursaday,7daysaweek.

60%ofthecompany'semployeesworkfromtheirhomes.Whenacustomercallsintothecentraloffice,aserviceemployeeiscontactedit.Theserviceemployeethencontactscustomerandsetsupanemployment.Theseemployeesarehighlytrainedandprovideexcellentservices.Inemergencies,suchasaseriousplumbingproblem,servicecanbeprovidedwithinanhour.Onereasonforthisisthattheserviceemployeesliveindifferentpartsofthecountry.Theyarenotcentrallocatedsoit'squickandeasyfortheytotravelto

customers‘home.

Quickservehasanexcellentreputation.Itspricesarereasonableanditservicesarequickandefficient.Thecompany'sserviceemployeesareclean,politeandefficient.Inthistypeofbusiness,persontopersoncontactisthekeytosuccess.Witheachsatisfiedcustomer,morecustomerssubscribe.Satisfiedcustomersrecommendquickservetotheirfriends.Thiskindofword-of-mouthadvertisingisverycosteffective.Costeffectmeansthattheresultsaregoodwithoutpayingahighprice.Inotherword,qualityserviceprovidesitsownrewardstothecompany.

Thecompanytakegreatprideinbeinghonestwiththecustomers.Therearenohiddenchargesfortheirservices.Asaresult,thenumberofcustomersineachcityisgrowingrapidly.Withtheagingpopulation,therearemoreelderlypeoplewhoneedhomerepairservices.Thesepeopleneedtohaveconfidenceintheserviceprovider.Theydon'twant

tocheated.

Thesepeopledon'tmindpayingareasonablefeeforhighqualityservice.Highquality

servicesshouldberewarded.

Thecompanyprovidesarangeofserviceplans,eachwithadifferentsubscriptionprice.

Theleastexpensiveserviceplaniscalledthebasicplan.Thisplanprovidesnon-emergencyservicewithaverylowservicecharge.Themostexpensiveservice'splan

istheirVIPplan.TheVIPplanprovidesemergencyservices24hoursadaywithnoadditionalservicecharge.Italsoprovidesrebatesforcustomerswhodon'tcallforany

serviceduringtheyear.Inaddition,quickservegivesbonuspointstocustomersforeach

yeartheysubscribe.Thesebonusescanbeusedtobuynewappliancessuchasstovesandrefrigerators.Ifthebusinesscontinuestogrow,theownersmaydecidetotakethecompanytopublic.Thismeansthatthepubliccanbuysharesofthecompany.Itwouldthenchangefromprivate-ownedcompanytoapubliccompany.Theownersbelievethattheirbusinessissuccessfulandcanexpandaroundworld.Theyalsobelievethattakingtheircompanypubliccanmakethemrich.

Unit3-2vocabulary学科和自然灾害

Biologyisstudyoflife,includingitsstructureandevolution.Biologystudyhowlifesurvives

andreproduces.

Chemistryisthestudyofmatter,includingthestructureofitsatomsandmolecules.Chemistsstudyhowvarioussubstancesinteractwitheachother.

Astronomyisoneoftheoldestsciences.Astronomersstudythestructureandevolutionof

theuniverse,includingthestudyofstars,planetsandgalaxies.

Geologiesisthestudyofstructureofhistoryoftheearthandotherplanets.Geologiststudydifferenttypesofrocks,earthquakesanddifferentlayersoftheearth.

Mathematicsisthe