懂你英语l unit.docx

懂你英语l unit.docx

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懂你英语lunit

Unit3-1Listening

Therearemanyformsoflivesonearth,includinghumanbeings.Lifeexistsinavarietyofconditions.Someformsofliveliveinthewateryenvironment,liketheoceans.Otherformsoflivescanbefoundinverydryareaslikedesserts.However,foranyformoflivetoexist,conditionsmustberight.Whentheconditionsaren’tright,thatformoflivescanextinct.Tobecomeextinctmeanstodieoutcompletely.

Conditionsmustberightforlifetoexist.Millionsofyearsago,therewereformsoflivesthatnolongerexist.Whenconditionchanged,thisformoflifediedout.Oneextinctioneventhappenedabout250millionyearsago.Thisisthelargestextinctioneventofalltime.Manyformsoflivesbecomeextinct.96%ofalllivesintheoceansdiedout.Mostinsectsalsobecameextinct.Thiseventhappenedoveraperiodofseveralmillionyears.Thecausesofthisextinctioneventarestillunknown.Possiblecausesincludelargestvolcaniceruptionsandglobalwarming.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’sdifficulttopredictwhat’sgoingtohappen.Theentireecosystemthatwedependonischanging.Someofthesechangingsareirreversible.Irreversiblechangescannotbeundone.Let’shopethehumansaresmartenoughtounderstandhowtheworldischanging.Withmoreunderstanding,wemakebetterchoicesaboutwhattodo.Wecanfacethechallengeofthepollutionsandglobalwarming.Weneedtodothisbeforeit’stoolate.Thisplanetofearthisouronlyhomeandweneedtoprotectit.

Unit3-1vocabulary

Lizard蜥蜴

Mammalsarecoveredbyhairorfur,haveabackboneandwarm-blooded.Allmammalsproducemilkfortheyoung.

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

Birdsarecoveredbyfeatherandarewarmblooded.Mostofthebirdscanflyandmanytypesofbirdmigrategreatdistances.

Mostinsectssuchantsandbeeshaveasmall3partsbodywith3pairsoflegs.Someinsects,suchasmosquitoes,spreaddiseasesthatcausethedeathsofmanyhumans.

Unlikeanimals,plantsgettheenergythattheyneedfromthesun.Plantsconvertlightenergyalongwithcarbonandwaterintochemicalenergy.

Scalesandrulersareusedtomeasureweightandlength.Unitsofweightincludeskilogramsandpoundsandunitsoflengthincludescentimetersandinches.

Theseinstrumentsareusedtoobserveverylargeandverysmallobjects.Telescopesareusedbyastronomersandmicroscopesareusedbybiologistsanddoctors.

Theseappliancesareusedinthekitchensofalmosteveryhome.Stovesareusedtoheatfoodandrefrigeratorsareusedtokeepfoodscoolorcold.

Housetoolslikethese,areusedtobuildorrepairthings.Hammersareusedtopoundinthenailsandscrewdriversareusedtoturnascrew.

Mammalsincludesomeofthemostintelligentanimalsonearth,suchaselephantsandhumanbeings.

Mosquitoescausethedeathofmorehumanthananyotheranimals.

Rulersareusedtomeasurelength

Wecanuseatelescopetoseeobjectsthatarefarway.

Unit3-1dialogue

Doyouknowwhatdateisittoday?

Whatdoyoumean,it’sthespecialday?

Oh,soyoudon’tremember.

Rememberwhat?

What’sthespecial?

It’souranniversary.Westarteddatingayearagotoday.

Oh,really.Sorry.

Justaminute,whatdoyouthinkthisis.

Oh,it’sanecklace.

Doyoulikeit?

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

No,letmedoit.

Soyoudidremember.

OfcourseIremember.It’sveryspecialforbothofus.

Ihavesomethingforyoutoo.

Youdo?

Yes,butyouhavetowaituntillater.

Oh,Ican’twait.Tellmewhatisit.

Canyouguesswhatitis?

Couldyougivemeah?

Wewentthere3monthsago.

Oh,youmeanAlfredo’s.

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

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

Thecompanywasestablished5yearsagoandisgrowingrapidly.Itstartedin1citybutit’snowin5cites.Thecompanyplanstoexpandto10citieswithinthenext24months.Ineachcity,thereissmallcentralofficeinalowrentareaofthecity.Thecentralofficehandlesthebusinesses,advertising,payrollandbilling.Italsotakescallsbycustomereitheronlineorbytelephone.Ittakescall24hoursaday,7daysaweek.

60%ofthecompany’semployeesworkfromtheirhomes.Whenacustomercallsintothecentraloffice,aserviceemployeeiscontactedit.Theserviceemployeethencontactscustomerandsetsupanemployment.Theseemployeesarehighlytrainedandprovideexcellentservices.Inemergencies,suchasaseriousplumbingproblem,servicecanbeprovidedwithinanhour.Onereasonforthisisthattheserviceemployeesliveindifferentpartsofthecountry.Theyarenotcentrallocatedsoit’squickandeasyfortheytotraveltocustomers‘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’twanttocheated.

Thesepeopledon’tmindpayingareasonablefeeforhighqualityservice.Highqualityservicesshouldberewarded.

Thecompanyprovidesarangeofserviceplans,eachwithadifferentsubscriptionprice.Theleastexpensiveserviceplaniscalledthebasicplan.Thisplanprovidesnon-emergencyservicewithaverylowservicecharge.Themostexpensiveservice’splanistheirVIPplan.TheVIPplanprovidesemergencyservices24hoursadaywithnoadditionalservicecharge.Italsoprovidesrebatesforcustomerswhodon’tcallforanyserviceduringtheyear.Inaddition,quickservegivesbonuspointstocustomersforeachyeartheysubscribe.Thesebonusescanbeusedtobuynewappliancessuchasstovesandrefrigerators.Ifthebusinesscontinuestogrow,theownersmaydecidetotakethecompanytopublic.Thismeansthatthepubliccanbuysharesofthecompany.Itwouldthenchangefromprivate-ownedcompanytoapubliccompany.Theownersbelievethattheirbusinessissuccessfulandcanexpandaroundworld.Theyalsobelievethattakingtheircompanypubliccanmakethemrich.

Unit3-2vocabulary

Biologyisstudyoflife,includingitsstructureandevolution.Biologystudyhowlifesurvivesandreproduces.

Chemistryisthestudyofmatter,includingthestructureofitsatomsandmolecules.Chemistsstudyhowvarioussubstancesinteractwitheachother.

Astronomyisoneoftheoldestsciences.Astronomersstudythestructureandevolutionoftheuniverse,includingthestudyofstars,planetsandgalaxies.

Geologiesisthestudyofstructureofhistoryoftheearthandotherplanets.Geologiststudydifferenttypesofrocks,earthquakesanddifferentlayersoftheearth.

Mathematicsisthestudyofnumbers,shapes,patternsandchange.Mathe