科技英语视听说复习提纲完整版Word文档下载推荐.docx
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科技英语视听说复习提纲完整版Word文档下载推荐.docx
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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
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.
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