12英语六级模拟长篇阅读.docx

12英语六级模拟长篇阅读.docx

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12英语六级模拟长篇阅读

长篇阅读1

Paper--MorethanMeetstheEye

　　A）Wearesurroundedbysomuchpaperandcardthatitiseasytoforgetjusthowcomplexitis.Therearemanyvarietiesandgradesofpapermaterials,andwhilstitisfairlyeasytospotthevarieties,itisfarmoredifficulttospotthegrades.

　　B）Itneedstobeunderstoodthatmostpaperandcardismanufacturedforaspecificpurpose,sothatwhilstthecorn-flakepacketmaylooksmart,itisclearlynotsomethingdestinedforthearchives.Itismadetolookgood,butonlyneedsalimitedlifespan.Itisalsomuchcheapertomanufacturethanhighgradecard.

　　C）Papercanbemadefromanalmostendlessvarietyofcellulose-basedmaterialwhichwillincludemanywoods,cottonsandgrassesorwhichpapyrusisanexampleandfromwherewegettheword"paper".Manyoftheseareveryspecialized,butthepreponderanceofpapermakinghasbeenfromsoftwoodandcottonorrags,withthebulkbeingwood-based.

　　PaperfromWood

　　D）Inordertomakewoodintopaperitneedstobebrokendownintofinestrands.Firstlybypowerfulmachineryandthenboiledwithstrongalkaliessuchascausticsoda,untilafinepulpofcellulosefibersisproduced.Itisfromthispulpthatthefinalproductismade,relyingonthebondingtogetherofthecelluloseintolayers.That,inaverysmallnutshell,istheessenceofpapermakingfromwood.However,therealityisrathermorecomplicated.Inordertogiveusourwhitepaperandcard,themakerswilladdbleachandothermaterialssuchaschinaclayandadditionalchemicals.

　　E）Afurtherproblemwithwoodisthatitcontainsamaterialthatisnotcellulose.Somethingcalledlignin.Thisisessentialforthetreesinceitholdsthecellulosefibrestogether,butifitisincorporatedintothemanufacturedpaperitpresentsarchivistswithaproblem.Lignineventuallybreaksdownandreleasesacidproductsintothepaper.Thiswillweakenthebondbetweenthecellulosefibersandthepaperwillbecomebrittleandlookratherbrownandcareworn.Wehaveallseenthisinoldnewspapersandcheappaperbackbooks.Ithasbeenestimatedthatmostpaperbackbookswillhavealifeofnotgreaterthanfiftyyears.Notwhatweneedforourarchives.

　　F）Sincethelignincanberemovedfromthepaperpulpduringmanufacture,theobviousquestionis"whyisitleftinthepaper?

"Theanswerliesinthefactthatligninmakesupaconsiderablepartofthetree.Byleavingthelignininthepulpapapermakercanincreasehispaperyieldfromatreetosome95%.Removingitmeansayieldofonly35%.Itisclearlyuneconomictoremovetheligninformanypaperandcardapplications.

　　G）Italsomeans,ofcourse,thatlignin-freepaperisgoingtobemoreexpensive,butthatisneverthelesswhatthearchivistmustlookforinhissupplies.Thereisnopointwhatsoeverincarefullyplacingourvaluableartifactsinpaperorcardthatisgoingtohastentheirdemise.Acidisparticularlyharmfultophotographicmaterials,causingthemtofadeandissomecasessimplyvanish!

　　H）So,howdowetellapieceofsuitablepaperorcardfromonethatisunsuitable?

Youcannotdoitbysimplylooking,andratherdisappointingly,youcannotalwaysrelyonthelabel."Acid-free"mightbetrueinasmuchasatestonthepapermayindicatethatitisaneutralmaterialatthistime.Butlignincantakeyearsbeforeitstartstheinevitableprocessofbreakingdown,andintherightconditionsitwillspeedupenormously.

　　I）Addedtothis,asIhaveindicatedearlier,papermayalsocontainothermaterialsaddedduringmanufacturesuchasbleach,chinaclay,chemicalwhitenersandsize.Thislookslikeableakpicture,anditwouldbebutforthefactthattherearesupplierswhowillguaranteethematerialthattheysell.Ifyouwanttobeabsolutelysurethatyouarestoringin,orprintingon,thecorrectmaterialthenthisisprobablytheonlyway.

　　J）Incidentally,acidscanmigratefrommaterialtomaterial.Liningoldshoeboxeswithgoodqualityacid-freepaperwilldolittletoguardthecontents.Theacidwillgetthereintheend.

　　PaperfromRag

　　K）Paperisalsocommonlymadefromcottonandragwaste.Thishastheadvantageofbeinglignin-free,butbecausethereismuchlesscottonandragthantrees,italsotendstobemuchmoreexpensivethanwoodpulppaper.Youwillstillneedtopurchasefromareliablesourcethough,sinceevenragpaperandcardcancontainundesirableadditives.

　　L）Areliablesourceforqualityragpapersisarecognizedartstockiest.Manywatercolorartistsinsistonusingonlyfinequalityragpaperandboard.

　　M）Themainlessontolearnfromthisinformationisthatyoucannotrelyonpurchasingarchivalmaterialsfromthehighstreet.Theonlysafesolutionistopurchasefromspecialistsuppliers.Itmaycostrathermore,butintheendyouwillknowthatyourimportantandvaluabledataandimageshavethebesthomepossible.

　　1.Thecorn-flakepacketischeaperthanhighgradecard.

　　2.Therearealotofmaterialswhichcanbeusedformakingpaper,butthesuperiorityonesaresoftwood,cottonandrags.

　　3.Duringthewholemanufacturingprocess,thefinalproductismadefromapulpofcellulosefibres.

　　4.Inordertomakewhitepaperandcard,themakerswilladdbleach.

　　5.Liguinisessentialforthetreebutitwillmakepapereasytobreak.

　　6.Manypaperproducerswillpreserveligninduringmanufacture,becauseleavingtheligninwillmakemorepaperfromatree.

　　7.Acidisparticularlyharmfultophotographicmaterials.

　　8.Iftheligninisremovedfromthepaper,thepaperwillbemoreexpensive.

　　9.Althoughfreeoflignin,papermadefromcottonandragwastecanalsocostmoremoneythanwoodpulppaperbecausethereismuchlesscottonandragthantrees.

　　10.Whatwecanlearnfrom"PaperfromRag"isthatyouhadbetterbuyarchivalmaterialsfromspecialistsuppliers.

文章精要

　　本文主要介绍了我们平常所见所用的纸的复杂性，通过介绍用木头和破布料造纸的过程，使我们对纸的类别、属性有了更深入的了解。

　　1.B

　　根据题干中的信息提示词corn—flakepacket,highgradecard,可定位到文章第二段，该部分最后提到corn-flakepacket在制造过程中比高等级的纸（highgradecard）便宜.

　　2.C

　　根据题干中的信息提示词softwood，cottonandrags，可定位到文章第三段最后一句。

　　3.D

　　根据题干中的信息提示词finalproduct，可将答案定位到D段，第二、三句提到最后的产品来源于纤维素纸浆。

　　4.D

　　根据题干中的信息提示词whitepaperandcard，可将答案定位到D段，该部分最后提到为了得到白纸，纸张生产者在制造过程中添加了漂白粉和其他化学物质。

　　5.E

　　根据题干中的信息提示词essentialforthetree，可将答案定位到E段，该部分提到木质素是木头的主要组成物，其作用是凝聚纤维素，但它会使纸张变得易碎。

　　6.F

　　根据题干中的信息提示词lignin，可将答案定位到F段，该部分最后提到许多纸张生产者在生产过程中会保留木质素，主要是因为它会增加树木的造纸产量。

　　7.G

　　根据题干中的信息提示词acid，可将答案定位到G段，该部分最后提到酸对相纸的原料尤其不利。

　　8.F

　　根据题干中的信息提示词lignin和paper可定位到文章的F段，因为该段提到，如果在纸张的生产中去除木质素，将会降低树木出产纸张的量，由此可以知道，去除了木质素的纸张价格必定会更加昂贵。

　　9.K

　　根据题干中的信息提示词cottonandragwaste可定位到文章的K段，该部分告诉我们，尽管用棉花和破布料造的纸里没有木质素，但它们要比木制的纸贵很多，这是因为棉花和破布料的数量比树木少得多，由此可以得出答案。

　　10.M

　　根据题干中的信息提示词PaperfromRa9可定位到文章的最后一段，该部分提出最好到专业的供应商那里去买档案材料，由此可以得出答案。

长篇阅读2

HowtoMakeAttractiveandEffectivePowerPointPresentations

　　A）MicrosoftPowerPointhasdramaticallychangedthewayinwhichacademicandbusinesspresentationsaremade.ThisarticleoutlinesfewtipsonmakingmoreeffectiveandattractivePowerPointpresentations.

　　TheText

　　B）Keepthewordingclearandsimple.Useactive,visuallanguage.Cutunnecessarywords—agoodruleofthumbistocutparagraphsdowntosentences,sentencesintophrases,andphrasesintokeywords.Limitthenumberofwordsandlinesperslide.TrytheRuleofFive-fivewordsperline,fivelinesperslide.Iftoomuchtextappearsononeslide,usetheAutoFitfeaturetosplititbetweentwoslides.ClickwithintheplaceholdertodisplaytheAutoFitOptionsbutton（itssymbolistwohorizontallineswitharrowsaboveandbelow）,thenclickonthebuttonandchooseSplitTextbetweenTwoSlidesfromthesubmenu.

　　C）Fontsizefortitlesshouldbeatleast36to40,whilethetextbodyshouldnotbesmallerthan24.Useonlytwofontstylesperslide—oneforthetitleandtheotherforthetext.Choosetwofontsthatvisuallycontrastwitheachother.GaramondMediumCondensedandImpactaregoodfortitles,whileGaramondorTempusSanscanbeusedforthetextbody.

　　D）Embedthefontsinyourpresentation,ifyouarenotsurewhetherthefontsusedinthepresentationarepresentinthecomputerthatwillbeusedforthepresentation.Toembedthefonts:

（1）OntheFilemenu,clickSaveAs.

（2）Onthetoolbar,clickTools,clickSaveOptions,selecttheEmbedTrueTypeFontscheckbox,andthenselectEmbedcharactersinuseonly.

　　E）Usecolorssparingly;twotothreeatmost.Youmayuseonecolorforallthetitlesandanotherforthetextbody.Beconsistentfromslidetoslide.Chooseafontcolorthatcontrastswellwiththebackground.

　　F）Capitalizingthefirstletterofeachwordisgoodforthetitleofslidesandsuggestsamoreformalsituationthanhavingjustthefirstletterofthefirstwordcapitalized.Inbulletpointlines,capitalizethefirstwordandnootherwordsunlesstheynormallyappearcapped.Upperandlowercaseletteringismorereadablethanallcapitalletters.Moreover,currentstylesindicatethatusingallcapitallettersmeansyouareshouting.Ifyouhavetextthatisinthewrongcase,selectthetext,andthenclickShift+F3untilitchangestothecasestylethatyoulike.ClickingShift+F3togglesthetextcasebetweenALLCAPS,lowercase,andInitialCapitalstyles.

　　G）Useboldoritalictypefaceforemphasis.Avoidunderlining,itcluttersupthepresentation.Don’tcenterbulletedlistsortext.Itisconfusingtoread.Leftalignunlessyouhaveagoodreasonnotto.Run“spellcheck”onyourshowwhenfinished.

　　TheBackground

　　H）Keepthebackgroundconsistent.Simple,lighttexturedbackgroundsworkwell.Complicatedtexturesmakethec