选修6英语课本原文文档.docx
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选修6英语课本原文文档.docx
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选修6英语课本原文文档
高中英语选修6
Unit1
ASHORTHISTORYOFWESTERNPAINTING
Artisinfluencedbythecustomsandfaithofapeople.StylesinWesternarthavechangedmanytimes.AstherearesomanydifferentstylesofWesternart,itwouldbeimpossibletodescribealloftheminsuchashorttext.Consequently,thistextwilldescribeonlythemostimportantones.StartingfromthesixthcenturyAD.
TheMiddleAges(5thtothe15thcenturyAD)
DuringtheMiddleAges,themainaimofpainterswastorepresentreligiousthemes.Aconventionalartistofthisperiodwasnotinterestedinshowingnatureandpeopleastheyreallywere.Atypicalpictureatthistimewasfullofreligioussymbols,whichcreatedafeelingofrespectandloveforGod.Butitwasevidentthatideaswerechanginginthe13thcenturywhenpainterslikeGiottodiBondonebegantopaintreligiousscenesinamorerealisticway.
TheRenaissance(15thto16thcentury)
DuringtheRenaissance,newideasandvaluesgraduallyreplacedthoseheldintheMiddleAges.Peoplebegantoconcentratelessonreligiousthemesandadoptamorehumanisticattitudetolife.AtthesametimepaintersreturnedtoclassicalRomanandGreekideasaboutart.Theytriedtopaintpeopleandnatureastheyreallywere.Richpeoplewantedtopossesstheirownpaintings,sotheycouledecoratetheirsuperbpalacesandgreathouses.Theypaidfamousartiststopaintpicturesofthemselves,theirhousesandpossessionsaswellastheiractivitiesandachievements.
Oneofthemostimportantdiscoveriesduringthisperiodwashowtodrawthingsinperspective.ThistechniquewasfirstusedbyMasaccioin1428.Whenpeoplefirstsawhispaintings,theywereconvincedthattheywerelookingthroughaholeinawallatarealscene.Iftherulesofperspectivehadnotbeendiscovered,noonewouldhavebeenabletopaintsuchrealisticpictures.Bycoincidence,oilpaintswerealsodevelopedatthistime,whichmadethecoloursusedinpaintingslookricheranddeeper.Withoutthenewpaintsandthenewtechnique,wewouldnotbeabletoseethemanygreatmasterpiecesforwhichthisperiodisfamous.
Impressionism(late19htoearly20thcentury)
Inthelate19thcentury,Europechangedagreatdeal,fromamostlyagriculturalsocietytoamostlyindustrialone.Manypeoplemovedfromthecountrysidetothenewcities.Thereweremanynewinventionsandsocialchangesalsoledtonewpaintingstyles.AmongthepainterswhobrokeawayfromthetraditionalstyleofpaintingweretheImpressionists,wholivedandworkeinParis.
TheImpressionistswerethefirstpainterstoworkoutdoors.Theywereeagertoshowhowlightandshadowfellonobjectsatdifferenttimesofday.However,becausenaturallightchangessoquickly,theImpressionistshadtopaintquickly.Theirpaintingswerenotasdetailedasthoseofearlierpainters.Atfirst,manypeopledislikedthisstyleofpaintingandbecameveryangryaboutit.Theysaidthatthepainterswerecarelessandtheirpaintingswereridiculous.
ModernArt(29thcenturytotoday)
Atthetimetheywerecreated,theImpressionistpaintingswerecontroversial,buttodaytheyareaccepetedasthebeginningofwhatwecall“modernart”.ThisisbecausetheImpressionistsencouragedartiststolookattheirenvironmentinnewways.Therearescoresofmodernartstyles,butwithouttheImpressionists,manyofthesepaintingstylesmightnotexsist.Ontheonehand,somemodernartisabstract;thatis,thepainterdoesnotattempttopaintobjectsasweseethemwithoureyes,butinsteadconcentratesncertainqualitiesoftheobject,usingcolour,lineandshapetorepresentthem.Ontheotherhand,somepaintingsofmodernartaresorealisticthattheylooklikephotographs.Thesestylesaresodifferent.Whocanpredictwhatpaintingstylestherewillbeinthefuture?
Unit3
ItisabeautifuldayhereandIamsittingunderthebigtreeattheendofthegarden.Ihavejustreturnedfromalongbikeridetoanoldcastle.ItseemsamazingthatatmyageIamstillfitenoughtocycle20kilometresinanafternoon.It’smybirthdayintwoweeks’timeandI‘llbe82yearsold!
IthinkmylongandactivelifemustbeduetothehealthylifeIlive.
Thisbringsmetotherealreasonformyletter,mydeargrandson.Yourmothertellsmethatyoustartedsmokingsometimeagoandhowyouarefindingitdifficulttogiveitup.Believeme,Iknowhoweasyitistobeginsmokingandhowtoughitistostop.Yousee,duringadolescenceIalsosmokedandbecameaddictedtocigarettes.
Bytheway,didyouknowthatthisisbecauseyoubecomeaddicatedinthreedifferentways.First,youcanbecomephysicallyaddicatedtonicotine,whichisoneofthehundredsofchemicalsincigarettes.Thismeansthatafterawhileyourbodybecomesaccustomedtohavingnicotineinit.Sowhenthedrugleavesourbody,yougetwithdrawalsymptoms.Irememberfeelingbad-temperedandsometimeseveninpain.Secondly,youbecomeaddictedthroughhabit.Asyouknow,ifyoudothesamethingoverandoveragain,youbegintodoitautomatically.Lastly,youcanbecomementallyaddicted.IbelievedIwashappierandmorerelaxedafterhavingacigarette,soIbegantothatIcouldonlyfeelgoodwhenIsmoked.Iwasaddictedinallthreeways,soitwasverydifficulttoquit.ButIdidfinallymanage.
WhenIwasyoung,Ididn’tknowmuchabouttheharmfuleffectsofsmoking.Ididn’tknow,forexample,thatitcoulddoterribledamagetoyourheartandlungsorthatitwasmoredifficultforsmokingcouplestobecomepregnant.Icertainlydidn’tknowtheirbabiesmayhaveasmallerbirthweightorevenbeabnormalinsomeway.NeitherdidIknowthatmycigarettesmokecouldaffectthehealthofnon-smokers.However,whatIdidknowwasthatmygirlfriendthoughtIsmeltterrible.Shesaidmybreathandclothessmelt,andthattheendsofmyfingerswereturningyellow.Shetoldmethatshewouldn’tgooutwithmeagainunlessIstopped!
IalsonoticedthatIbecamebreathlessquickly,andthatIwasn’tenjoyingsportasmuch.WhenIwastakenofftheschoolfootballteambecauseIwasunfit,Iknewitwastimetquitsmoking.
IamsendingyousomeadviceIfoundontheInternetItmighthelpyoutostopandstrengthen
yourresolve.IdohopesobecauseIwantyoutoliveaslongandhealthyalifeasIhave.
Lovefrom
Grandad
Unit4
THEEARTHISBECOMIGWARMER-BUTDOESITMATTER?
Duringthe20thcenturythetemperatureoftheearthros
eaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?
Earthcare’sSophieArmstrongexploresthesequestions.
Thereisnodoubtthattheearthisbecomingwarmer(seeGraph1)andthatitishumanactivitythathascausedthisglobalwarmigratherthanarandombutnaturalphenomenon.
Allscientistssubscribetotheviewthattheincreaseintheearth’stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.Somebyproductsofthisprocessarecalled“greenhouse”gases,themostimportantoneofwhichiscarbondioxide.DrJaniceFosterexplains:
“Thereisanaturalphenomenonthatscientistscallthe“greenhouseeffect”.Thisiswhensmallamountsofgasesintheatmosphere,likecarbondioxide,methaneandwatervapour,trapheatfromthesunandthereforewarmtheearth.Withoutthe‘greenhouseeffect
theearthwouldbeaboutthirty-threedegreesCelsciucoolerthanitis.So,weneedthosegases.Theproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.Itmeansthatmoreheatenergytendstobetrappedintheatmospherecausingtheglobaltemperaturetogoup.
Weknowthatthelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100to150years.ItwasascientistcalledCharlesKeeling,whomadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.Hefoundthatbetweentheseyearsthecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion(seeGraph2)
Allscientistsacceptthisdata.Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.Sohowhighwillthetemperatureincreasego?
DrJaniceFostersaysthatoverthenext100yearstheamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.
However,theattitudeofscientiststowardsthisriseincompletelydifferent.Ontheonehand,DrFosterthinksthatthetrendwhichincreasesthetemperatureby5degreeswouldbeacatastrophe.Shesays,“Wecan’tpredicttheclimatewellenoughtoknowwhattoexpect,butitcouldbeveryserious.”Otherswhoagreewithherthinktheremaybeariseofseveralmetresinthesealevel,orpredictseverestorms,floods,droughts,famines,thespreadofdiseasesandthedisappearanceofspecies.Ontheotherhand,therearethose,likeGeorgeHambley,whoareopposedtothisview,believethatweshouldnotworryabouthighlevelsofcarbondioxideintheair.Theypredictthatanywarmingwillbemildwithfewbadenvironmentalconsequences.Infact,Hambleystates,“Morecarbondioxideisactuallyapositivething.Itwillmakeplantsgrowquicker;cropswillproducemore;itwillencourageagreaterrangeofanimals-allofwhichwillmakelifeforhumanbeingsbetter.”
Greenhousegasescontinuetobuildupintheatmosphere.Evenifwestartreducingtheamountofcarbondioxideandothergreenhousegases,theclimateisgoingtokeeponwarmingfordecadesorcenturies.Nooneknowstheeffectsofglobalwarming.Doesthatmeanweshoulddonothing?
Or,aretheriskstoogreat
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