stepbystep3000第二册Unit7unit12原文及答案.docx

stepbystep3000第二册Unit7unit12原文及答案.docx

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stepbystep3000第二册Unit7unit12原文及答案

leaveourschool,”histeachersaid.Louis'smusicwasjazzandhelovedit.Herememberedallthemusicheheard.Hedidn’tlearntoreadmusicuntilhewasaman.Whenheleftschool,heplayedinmanybands.Helovedhisworkandpeoplelovedhim.Theyknewthathehadawonderfultalent.Louisplayedinlittletownsandinbigcities.

Satchmo’shornhadasmanysoundsastenhorns—sometimesslowandsweet?

Sometimesfastandhot,highandlow.Hismusicwasalwaysstrongandexciting.“Hedoesmakewonderfulmusic,”saidthemanwholistenedhappily.“Yes,”saidanotherman,“hemakesthathornspeak.”Thenthemusicendedandthecrowdcheered.LouisArmstrongspokewithtearsinhiseyes,“Ithink,myfriends,youcanlistentoasmuchjazzasIcanplay.Ithoughtjazzwasmymusic,butnowIunderstanditisours.Isn’titbeautifulhowmusicbringsustogether!

”

Questions:

1.WherewasLouisfrom?

2.Whatkindoffamilywasheborninto?

3.WhoknewLouis?

4.Whatmusicdidheplay?

5.Whendidhelearntoreadmusic?

6.WhatisLouisArmstrongmostfamousfor?

7.WhatbringsLouisandotherpeopletogether?

8.Whatdoesthestory“Themanwiththehorn”mainlytellus?

PartIVBankHolidayDIY

1.（F）2.（F）3.（T）4.（T）5.（T）6.（F）

Wheneverthere’saRankHolidayweekendinBritain,acertainkindofshopalwaysgetsverybusy,andit’snotwhatyoumightthink—clothesshopsormusicshops.TheBritishflocktoDIYstoresandgardencentresandhugenumbersofpeoplespendtheirdaysoffdoinghomeimprovementsinsteadofrelaxing!

DoingDIYisverypopularinBritain,andtherearelotsofTVprogrammeswhichshowpeoplehowtoimprovetheirhomes.

Somepeoplesticktosimpledecorating—puttingupwall-paperandpaintingwalls.ButtherearcallsortsofDIYprojectsthatsomepeopledecidetotakeon,fromlayingnewflooring,toplumbing,suchasputtinginanewshower,ortilingwalls.

Unfortunately,somepeoplebiteoilmorethantheycanchew,andstartdoingajobwhichendsinDIYdisaster.Forexample,it’srecommendedthatanythingelectricalshouldbedonebyaqualifiedelectrician,butmanypeopleignorethiswarningandputthemselvesindanger.

Thereisalsoahugemarketforflat-packfurniturewhichyouputtogetheryourselfwithafewbasictools.OftenpeoplewhoarenotverysavvyaboutDIYfindthesupposedlysimpleinstructionsimpossibletofollow,andit’seasytobuildapieceoffurniturewhichisunstableorjustnotveryattractive!

Gardeningisalsopopular,andagoodwaytoenjoytheweatheronasunnyBankHoliday.Butit’snotassimpleasplantingplantsanddoingsomeweeding.Morecomplicatedworksuchasbuildinganewpatioorsomedeckingcancausesomestressandbackache!

Sowhydopeopledoit?

Whoknows,maybewearesousedtoworkingthatwearen’tverygoodatrelaxing.Onething’sforsure,thoughalotofDIYorgardeningprojectswillbestartedwiththebestintentionsduringtheBankHolidayweekend,manyofthemmaynotgetfinished!

Statements:

1.ManyBritishpeoplegotoclothesshops,musicshopsorrelaxathomeonaBankHolidayweekend.

2.DIYprojectsareveryeasytofinishbecausetherearemanyTVprogrammesshowingpeoplehowtodothem.

3.Pullinginanewshowerismoredifficultthanputtingupwall-paper.

4.Non-electriciansarenotsupposedtodoanythingelectricalbecausetheymightputthemselvesindanger.

5.Hat-packfurnitureisfurniturethatcanbeputtogetherwithafewbasictools.

6.Gardeningcancausestressandbackache.

Unit8Everybodycanhelptheenvironment

PartIWarmingup

A

1.Greenpeace,attitudesandbehavior,environment,peace

2.WorldWildlifeFoundation,1961,future,nature

3.LiveEarth,climatecrisis

4.GreenSchoolProject,schools,waste,landfill

5.ClimateChange,knowledge,measures

6.FriendsoftheEarth,network,activistgroups,urgent

7.EnvironmentalBureau,143,31,sustainable

8.Foundation,oceans,wavesandbeaches,50000

9.GreenBuildingCouncil,designed,builtandoperated,responsible,healthy

10.theAlliancetoSaveEnergy,costs,greenhousegasemissions

11.theEarthOrganization,conservation,rehabilitation,pantandanimal

12.Trees,WaterandPeople,naturalresources,well-being

13.AmericanForests,restoreandenhance,filter,remove,homes

14.TheGlobalAmphibianAssessment,status,5918,600,60

15.SolarEnergySociety,technologies

B

1.food,doesn’t,packaging

2.vegetables,don’t,chemicals

3.Save,water

4.won’t,forever,earthorsea

5.bottles,once,bank

6.paper,recycled

7.Avoid

8.unleadedpetrol

9.madefrom,protected

10.publictransportation

11.wood,rainforests

12.aerosols,haven’t

13.Don’t,plasticboxes

14.batteries,little,50,energy

15.lights,using

16.conservation,danger

17.25%,rubbish

18.oldpeople,homes,energy

19.visit,zoos

PartIICampaignCaliforniaRe-Leaf

A

1.theatmosphere,theclimate,irreversible,

2.everybody’slife,activities,realsimple,accessibleto,everydaypeople,doalot

3.onestep,consciousabout,energy,fuelefficient,lightbulbs,recycling

B

1.plantingsingletree

2.deflateGreenhouseEffect/takeCO2

3.realsimpleactivities/accessibletopeople/citizens/doalot

4.cleanupCO2/improveenvironment/neighborhoodsattractive

5.avarietyofpersonalactions

CampaignCaliforniaRe-LeafasinL-E-A-FwaskickedoffrecentlywithapartyinSanFrancisco’sWashingtonSquareParkthrownbyacoalitionofsevenurbanforestrygroups.Thefocusofthepartywastheplantingofasingletree,thefirstof20milliontobeplantedin40Californiancitiesoverthenextdecade.Thetreeplantingcampaignisanattempttodeflatewhat’sbeencalledtheGreenhouseEffect.Scientistsbelievethattheearthisgettingwarmerbecauseofanaccumulationofcarbondioxideintheair.Treestakecarbondioxideoutoftheair.

MartinRosenisthedirectoroftheTrustforPublicLand,theorganizationthatiscoordinationthestat-widetreeplatingeffort.“Timeisnotneutral.Wearesorapidlydepletingtheatmosphere,wearesorapidlychangingtheclimate,thatunlesswestartnowthesituationmaywellbecomeirreversible.”

Somemoviestarswereonhandforthetreeplantingceremony.ActorPeterCyoteservedasthemasterofceremonies.“Unlesstheenvironmentalmovementcomesintoeverybody’slife,inrealsimpleactivities,it’snotgoingtowork.Plantingatreeisrealsimple.SoIwantedtoparticipateinsomethingthatwasreallyaccessibletothecitizen,justtoeverydaypeople,tochildren.Sothatascitizenswecandoalot.”

AfterPeterCyoteintroducedafewspeakersandacoupleofsongsweresung,theceremonymovedovertoacorneroftheparkwhereagroupofyoungstersplantedaCopperBeechtree.

IsobelWadeisthestatecoordinatorforCampaignCaliforniaRe-Leaf.Wadesaysthetreeplantingsareimportantbecausetheywillhelpcleanupthecarbondioxideintheatmosphere,improvetheenvironmentandmakeneighborhoodsmoreattractive,butIsobelWadecautionsitisn’tenough.“It’sonestepinacombinationofthings.Theotherkindsofthingsthatwecanallbedoingarebeingmuchmoreconsciousabouthowweuseenergyinourhome,whetherwe’rebuying—ah—fuelefficientcarsandproducts,whetherwe’reusingStyrofoamwhenwedon’thavetobe,--ah—whetherwe’returningofflightbulbswhenwe—ah—leavetheroom—um—andjustavarietyofpersonalactionslikerecyclingthatweneedtostartthinkingaboutanddoingmore.”

IsobelWadealsosaysshe’dlovetoseeeveryoneinCalifornia’surbanarrearstakethetimetoplantonetreeandtakecareoftheonesthatarealreadygrowing.

PartIIIPBS–abiodegradableplasticproduct

Outline

I.headache

noteasilybreaddown

II.PBS

A:

contact/microorganisms/enzymes/smallerpieces/intowater&CO2

B:

1.safer

90%/degraded/in90days/shorter/inadump

2.moreheatresistant

a.meltat60℃

b.shaperetainedupto100℃

C.disadvantage

moreexpensivethanordinaryplastic/price20%higher

III.Application

A.alreadystarted

B.tobepopularized

C.role

plasticfoodcontainers&tableware/roadsigns/teamcheeringequipment（e.g.horns/miniflags/trashbags/umbrellas/eyeglassframes）

Whenyougotothesupermarket,canyouresistusingplasticbags?

Forlotofus,probablywon’t.Whatyoueatout?

Canyouguaranteenottouseanyplastictableware?

Andhowaboutifsomeoneasksyou;canyourecommendareplacementforplasticproducts?

Don’tsaypaper!

Hereisanewsolution;biodegradableplastic!

Aseveryoneknows,plasticisabigenvironmentalheadachealthoughitbringsusmuchconvenience.Likeplasticbags,plasticfoodcontainers,andplastictableware.Butitisperhapsthemostharmfulofallourgarbagebecauseitdoesnoteasilybreakdowninnature.

AresearcherformtheChineseAcademyofSciences,JiJunhuisaysheandhiscolleagueshavefoundabettersolution.

“WhenthePBSinthebiodegradableplasticcomesincontactwithmicroorganismsorenzymes,theplasticstructurewilldegradeintosmallerpieces,andfinallyitturnsintowaterandcarbondioxide.Thisishowthebreak-downprocessworks.”

PBSisachemicalcomponentthatisthekeytothisnewbiodegradableplastic.Itcanhelptheplasticdegradeintonon-pollutingelements,sothebroken-downplasticfragmentscanbeabsorbedbysoilandwater.

PBSisnotanentirelynewproduct,however,thisChina-madebiodegradableplasticissaferandmoreheat-resistant.AccordingtoJiJun-hui,testinghasshownthat90%ofthisnewbiodegradableplasticcanbedegradedwithin90days.Anditeventakesashorterperiodoftimeifitisburiedinadumpratherthanexposedtoth