科技英语视听说复习提纲完整版.docx

科技英语视听说复习提纲完整版.docx

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科技英语视听说复习提纲完整版

科技英语视听说复习提纲

Lesson1

ThePrivateLifeofPlants1

1、Whatproblemsdoplantshavetofacethroughouttheirlivessoastosurvive

（1）Fightseasons

（2）competeformates（3）invadenewterritories

2.ArefungiplantsWhatdofungiproduce

Fungiproducesporeswhicharesimilartoseeds.

3.Howdotheseedsofdandelionsfly

Aspecialapparatusisneededbytheseedsofdandelionstofly.Eachseedofthedandelionisfittedwithitsownindividualparachute.

Lesson2

ThePrivateLifeofPlants2

1.Whatisthebegonia’ssecretofsurvivingonthedimforestfloor

Thesecretofbegoniasurvivingonthedimforestfloorliesinitsleaveswhichundersidesisred.

2.Howdoleavesreducetheproblemofwaterlyingontheirsurface

Therearefourways.

Thefirstoneisthattheleavesaretoughenoughtowithstandthepoundingofwater.

Thesecondoneisthattheleaveshavegutterstocarryawaythewater.

Thethirdoneisleaveshavepointedtipsattheendsoastodrainwaterrapidly.

Thelastoneisthatleaveshavethedensehairstokeeptheirporesfree.

3.Whatisthedramaticsolutionasensitivemimosapossessestodefenditself

Onetouchcanmaketheleavesfold,anothertapcanmakeitfloptotheground.

Lesson3

GlobalWarming

1.Whatarethethreefactorscausingthecollisionbetweenourcivilizationandtheearth

（1）population

（2）ourwayofthinking

（3）thescientificandtechnologicalrevolution.

2.Howtobalancetheeconomyandtheenvironment

（Open-EndedQuestion）

3.WhatshouldwedotosolvetheclimatecrisistosecureourfutureortosaveourplanetEarth

（Open-EndedQuestion）

Discussion1

BigFreeze

1.WhatmightbethemajorcauseoftheBigFreeze

Themajorcausesofthebigfreezearevolcaniceruptions,globalwarmingandchangesintheoceancurrents.

2.Pleasenamethefivewaysmentionedinthestateoftheplanetthatwecareaffectinglife’sdiversityonEarth.

（1）over-harvesting

（2）theintroductionofalienspecies

（3）thedestructionofhabitats（4）islandisation（5）pollution.

Lesson4

JourneyofLife1

1.Whatisnationalselection

Anytraitthatincreasesthepossibilityofyoungstersurvivingwillbepassedoninitsgenes.

2.Thereisanenormousvarietyoflifeontheplanet,howdidlifebegin

Thesingle-celllivingthingsbeganat3billionyearsago.Thecellspullingtogetherlikejellyfishbeganat670millionyearsago.Theanimals’softbodiesturnedhardlikesnailsbeganataround570millionyearsago.

3.Wheredidalllifebegin,andwhy

Allthelifebeginsinthesea.Becauseinthesea,thetemperaturehardlychangesandthewatercanprotectagainstthepullofgravityandtheburningsun.

Lesson5

JourneyofLife2

1.Whatarethegoodreasonsforlifetogetintotheair

Therearethreereasons.

Thefirstisthatwingsprovideanimalswithextrastrikepower.

Thesecondisthatflyingisfastestandmostefficientwaytotravel.

Thelastoneisthatitallowsanimalstofindfood,exploreterritoryorescapefromdanger.

2.Whydowesaycaterpillarsaremunchingmachines

Becausetheironlypurposeistoeatandgrow,theycanballoontoincredible2000timestheirstartingweight.

3.Whydowesaythatthepredatorsandpreyarelockedinanintenserelationship

Whenpredatorsfindbetterwaystocatchandkill,andpreyshavetoimprovetheirself-defense.Thatistosay,neitherpredatorsnorpreyscanaffordtobeleftbehind.

Lesson6

Phobias

1.Whatisphobia

Fearplaysavitalpartinoursurvival,whenfeargetsoutofcontrol,wecallitphobias.

2.Whatisthepercentageofpeoplewithphobias

Tenpercentpeoplewithphobias.

3.Doweinheritspecificphobiasfromourparents

No,wedon’t.

Discussion2

JourneytotheCenterofthePlanet

1.Howdoesaseaturtleknowitslocationandnavigateitswayaroundtheearth

It’sbasedontheearth’smagneticfield.

2.Whatwasfoundatthebottomoftheoceanin1985bysomescientists

Shrimpswhichcanliveinboilinghotwaterandlivewithoutsun’senergywerefoundin1985.

Lesson7

SecretofSexes

1.Whatarethedifferencesbetweenmenandwomen

Menaremorethings-orientedwhilewomenaremorepeople-oriented.

2.Whatarethetworeasonsforthemarriagetoendindivorce

Thefirstreasonisyouareunfaithfultoyourspouse,thesecondreasonisconstantargue.

3.Whypeoplesay“lovemakespeopleblind”

Therewardsystemfloodswithfeelinggoodchemicals,whileanotherpartofthebrain,whichisusedforcriticalthinking,switchesoff.

Lesson8

GreatWildlifeMoments

1.Whydoredcrabsheadfortheshoretospawn

Becausetheredcrabsareunabletoraisetheiryoungonland,sotheyhavetotrekseveralkilometerstothesea,theirancestralhome.

2.HowdoestheAuroraaustralisoccur

TheAuroraaustralisoccurswhensubatomicparticlestravelingthroughspaceentertheEarth’smagneticfield.

3.Howcananeagleeatatortoise

Aneaglefliestofindafavoritesite,gainitsheight,letsthetortoisego.

Lesson9

TheSunandtheMoon

1.WhyalllifeonEarthowesitsexistencetothesun

Thesunpowerseverynaturalsystemandsustainseveryplantandanimal.WithouttheSun,theEarthwouldbeabarren,lifelessballofrock.

2.Whatisthesunmadeof

Over90%ofthesunismadeofhydrogen.

3.Whatistheimpactofthefullmoononseacreaturesandonhumanbeings

Intheoceanthefullmoon’sbrightlightisamatingcallforseacreatures.Mostwomengettheirmenstrualperiodatthedayoffullmoon.

Discussion3

TheHumanMind

1.Howcanyoutellaperson’ssmileafakeone

Youjustwatchthelinesaroundhis/hereyes.

（1）movementofone’smouth

（2）musclesaroundone’seyes

AlienContact

1.IfonedayalienspeciescometoEarth,what’sthenarrator’shope

Thenarrator’shopeisthatthey’llcomeinpeace.