懂你英语Level Uni.docx

懂你英语Level Uni.docx

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懂你英语LevelUni

Unit3-1Listening自然灾害和环境保护

Therearemanyformsoflivesonearth,includinghumanbeings.Lifeexistsinavarietyofconditions.Someformsoflivesliveinthewateryenvironment,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.Plantsconvertlightenergyalongwithcarbonandwaterintochemicalenergy.

Scalesandrulersareusedtomeasureweightandlength.Unitsofweightincludeskilogramsandpoundsandunitsoflengthincludescentimetersandinches.

Theseinstrumentsareusedtoobserveverylargeandverysmallobjects.Telescopesareusedbyastronomersandmicroscopesareusedbybiologistsanddoctors.

Theseappliancesareusedinthekitchensofalmosteveryhome.Stovesareusedtoheatfoodandrefrigeratorsareusedtokeepfoodscoolorcold.

Housetoolslikethese,areusedtobuildorrepairthings.Hammersareusedtopoundinthenailsandscrewdriversareusedtoturnascrew.

Mammalsincludesomeofthemostintelligentanimalsonearth,suchaselephantsandhumanbeings.

Mosquitoescausethedeathofmorehumanthananyotheranimals.

Rulersareusedtomeasurelength

Wecanuseatelescopetoseeobjectsthatarefarway.

Unit3-1dialogue纪念日

Doyouknowwhatdateisittoday

Whatdoyoumean,it’sthespecialday

Oh,soyoudon’tremember.

RememberwhatWhat’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,areyouexcitedYousaidyoureallylikethefoodthere.

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’tyouthinkitworthLet’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,fixesintern