step by step 3000 第三册 英语听力 Unit 6.docx

step by step 3000 第三册 英语听力 Unit 6.docx

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stepbystep3000第三册英语听力Unit6

Unit6BreakthroughsinScienceandTechnology

AKeywords:

bulletproofvest…防弹背心predictingweather…预测天气

shootingrange…靶场yarn…纱线pawn…兵，卒

rivalv.…媲美,对抗,角逐mutationn.…突变,变种

traitn.…特征,特徵cutting-edge…尖端

PartIWarmingup

A1Summaries

1.Thisnewsitemisaboutakindofnewbulletproofvestmadeofsilk.

2.ThisnewsitemisaboutresearchdonebyAmericanandJapaneseresearcherstopredictsevereweatherinandaroundtheIndianOcean.

3.ThisnewsitemisaboutachessmatchbetweenaworldchampionandtherestoftheworldontheInternet.

4.ThisnewsitemisaboutthesignificanceofthediscoveryofthestructureofDNA.

5.ThisnewsitemisaboutNEC'snewrobotthattalksandunderstandsorders.

A2Completefacts

1.Whilesilkthreadsmaybesoft,theycanbeusedtoproduceastrongeryarnthancopperthreads.

2.AmericanandJapaneseresearchershavediscoveredastrongconnectionbetweenextremeweatherandconditionsintheocean.

3.Visitorstothesitehave24hourstovoteontheircountermovehelpedbyateamofyoungchessexpertswhowillsuggeststrategies.

4.Understandingitscodehashelpedtounlockthemechanicsofinheriteddisease,aswellasbeneficialbiologicaltraitssuchasintelligenceandbodystrength.

5.TherobotfromNECcanrecordandsendvideomailthroughtheInternetandswitchonTVs,VCRsandairconditioners.

Tapescripts:

1.Thaisilkisknownforitsbeautyandelegance.Butaresearchteamhasfoundanewuseforit.AbulletproofvestmadeofsilkwasputtothetestatashootingrangeinThailand.Afterseveralroundsofgunfire,thevestwasexamined.Thebulletswerestuckinthefirstlayeroffifteenpiecesofsilk.Amemberoftheresearchteamsayswhilesilkthreadsmaybesoft,theycanbeusedtoproduceastrongeryarnthancopperthreads,thematerialusedinregularbulletproofvests.

2.AmericanandJapaneseresearcherssaytheyareastepclosertopredictingsevereweatherinandaroundtheIndianOcean.Researchershaveanalyzedweatherdatafromtheregionoverthepast40yearsandthey'vediscoveredastrongconnectionbetweenextremeweatherandconditionsintheocean.ABBCsciencecorrespondentsaysthefindingscouldmakeiteasiertopredictdroughtsor,indeed,periodsofheavyrainfall.

3.TheworldchesschampionGarryKasparovbeganamatchagainsttherestoftheworldontheInternet.Kasparovmadehisfirstmovewithameter-highpawnbeforeanaudienceofchessfansataparkinNewYork.ThemovewasimmediatelypostedonaspecialwebsitesetupbytheMicrosoftCorporation.Visitorstothesitehave24hourstovoteontheircountermovehelpedbyateamofyoungchessexpertswhowillsuggeststrategies.

4.FewscientificadvancesofthisoranymillenniumcanrivalinsignificancethediscoveryofthestructureofDNA,thebasicmoleculeoflife.KnowledgeofthestructureofDNAhelpsexplainmanythings,includinggeneticmutationand,throughit,evolution.Understandingitscodehashelpedtounlockthemechanicsofinheriteddisease,aswellasbeneficialbiologicaltraitssuchasintelligenceandbodystrength.ThediscoveryoftheDNAmoleculealsopavedthewayformanyoftoday’scutting-edgescience,includinggeneticengineering,acontroversialbranchofknowledgethatraisesnewethicalandmoralquestionsthatarecertaintobewithusintothenextmillennium.

5.Somesayit'shardtofindgoodhelpthesedays,butaJapaneseelectronicsfirmthinksit'sfoundtheanswer.It'sarobotthattalksandunderstandsorders.TherobotfromNECcanrecordandsendvideomailthroughtheInternetandswitchonTVsandVCRs.Andifit'sbecomingabitwarmforyou,onesimplecommandandtherobotwillswitchontheairconditioner.

B

keywords:

forceofattraction…引力spark…火花,星火,触发

penetrate…穿透,渗入electromagneticwaves…电磁波fungus…菌类,霉resistancetomovement…运动阻力

energy-efficient…高效节能opaque…不透明ruby…红宝石ferment...发酵,酵母

ballbearing…球轴承lubricatingoil…润滑油

LightAmplificationbytheStimulatedEmissionofRadiation（LASER）

…受激辐射光放大，激光

Subjectsthatthespeakersaretalkingabutandtheirtonesofvoice:

SubjectToneofvoice

1.Gravity/GravitationSuperior（有优越感的）

2.LighteningPatronizing（以施惠人自居）

（摆出屈尊俯就的样子）

3.XraysEnthusiastic

4.LaserBored

5.YeastFriendly/intimate

6.FrictionLoudlybutneutral

7.RecyclingPatiently

Tapescripts:

1....Yes,yousee,it'stheforceofattractionbetweenanytwoobjects.Thestrengthoftheforcedependsonthemassoftheobjectsandthedistancebetweenthem.Er...themostobviouseffectisthewayobjectsonthesurfaceoftheearthareattractedtowardsthecenteroftheearth...

2....asitcomesdownitgoesrelativelyslowly100to1,000milesperhourandyoucan'tseeit,butthereturnstrokegoesupfromtheearthtothecloudanditgoesatover87,000milesperhourandthat'stheoneyoucansee,yousee,theonethatgoesbackup.It'sreallyjustaverylarge,powerfulspark.Thedistanceinmilesyouareawayfromitisthetimeinsecondsbetweenitandthesoundyouhear...

3....Well,theywerefirstdiscoveredin1895andtheycanpenetratematterthatisopaquetolight.Somematterismoretransparenttothemthanothers,whichmeansyoucanseeinsidesomebody.Theyareactuallyquitedangerousandpeoplewhoworkwiththemwearspecialprotectiveclothing...

4....ordinarylightconsistsofelectromagneticwavesofdifferentfrequenciesandphase（s）.Thisisabundleofwavesofthesamefrequencyandphase.Youcancreatethebeamsfromarubyrodoratubeofcarbondioxidethat'sstimulatedwithflashesofordinarylight.Thewordisanacronymforlightamplificationbythestimulatedemissionofradiation.Now,doesanybody...

5....they'realltypesoffungus.Therearemanydifferentkindsofthembutthebestknownaretheonesusedincookingandbrewing.Whenthey'remixedwithsugartheycausethesugartofermentandtwothingshappen:

firstcarbondioxideisgivenoffandsecondalcoholisformed,butwhentheproportionreaches12%,it'sallkilledoffnaturally...

6....incontactwitheachother,there'saresistancetomovementbetweenthem.Themainreasonwhyweuseballbearingsandlubricatingoilistocounteractthis;themainreasonwhyrubberisusedintiresandshoesistoincreasetheeffectofit...

7....No,it'stheprocesswherebymaterialsareusedagain.Normally,itischeapertodothisbecauseit'smoreenergy-efficient.Ontheotherhand,onematerialthat'shardtodealwithinthiswayisplastic--therearesomanytypesthatit'sverydifficulttoseparate...

PartIIHumangenomeproject

A

Keywords

humangenomeproject…人类基因组计划inheriteddisease…遗传病

genetictraits…遗传性状geneticmap…基因图谱,遗传图谱

genenome…基因组chromosome…染色体rung…n.（梯子的）横档，梯级amplify…放大,扩大warfare…战争，战争状态

AOutline

I.Thegoalofthehumangenomeproject:

toidentify,catalog,mapandanalyzeeveryoneofthe100,000inthehumanbody.

II.Descriptionofagene

A.asimpledefinitionofagene:

apieceofDNA,thebasicmoleculeoflife

B.locationofgenes:

onchromosomes/ineverycell/alternatelycoloredrungs

C.functionofthesequenceofgeneticrungs:

producechemicalinstructions/build&runthehumanbody

III.Significanceofthehumangenomeproject

A.tohelpcureorpreventmanyinheriteddiseases

B.tohelpamplifydesirablegenetictraitsinfuturegenerations

C.tosolvemanymysteriesofthebrain,consciousnessandthemind

D.toleadtoascientificdescriptionofhumannature

IV.Controversiesofthehumangenomeproject

Potentialabuse

e.g.:

1.forprofit

2.forwarfare

B

Keywords:

deciphering…破译geneticcode…遗传密码

humangenome…人类基因组sortedout…理顺decipher…解码lifeblood…命脉,生命线embryo…胎,初期

scrollv.…滚动cysticfibrosis…囊性纤维化

Choosecorrectanswers:

1.d2.c3.a4.c5.b6.b

PartIIILatestbreakthroughsintechnology

Keywords:

integratedadj.集成的miniaturization…微型化

tinkerwith…修补prototype…原型,样机

earpiece…听筒,耳机inventiveness…创造性

PopularSciencemagazine…科普杂志

A

1.Whatisthetrendforelectronicsinthefuture?

Integrated,smaller,faster,better

2.Whatisthethemeforelectronicsinthefuture?

Thecombinationofcomputersandcommunicationsandthenhavingthemdisappearfromoursight

BWriterelevantinformation

ItemDescriptions

T-Bo’spersonalTV…•canreadvideobroadcast

•canpauseonalivebroadcast

•learnswhichTVshowsandcharactersyouliketowatchandrecordsthemforyou

Ericsson’sR380•canmakecalls

•canbrowsetheweb

•cancheckyourcalendar

•cansendandreceiveemail

P3wristcamera•cangiveprettygoodpicture

•costs$2,000

IBMwearablePC•canbecarriedeasily

•informationcanbeaccessedthroughearpiece

•informationcanbeintegratedintoclothing

•weighslessthanapound

•canbeclippedontobelt

•themonitor,thesizeofapencap

Panasonicportable•canwatchmoviesandlistentoCDswhile

DVDplayertraveling

Casio’sGPSwatch•cantellyouwhereyouareonamap

•cangiveyoudirections

Tapescript:

"Everybodythinksoftechnologyassomebodyinalabcoat,youknow,tinkeringwithcomputerchips,buttechnologyisreallyabouthowweliveandhowwecommunicate."

SuzanneCantraisthe"What'sNew?

"editoratPopularSciencemagazine,amagazinethathasbeenfollowingadvancesintechnologyformorethanahundredyears.

Themostfancifuldreamofmankindistodayastartlingreality."Rememberwhentelevisionwasconsideredafadofthefuture?

"Itmaynotbelongbeforeournewseventsandcurrentworldhappeningswillbewitnessedinthousandsofhomes."Boy,weretheywrong?

T