2023年大学英语四级长篇阅读段落信息匹配题练习.pdf
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1、英语四级长篇阅读段落信息匹配题练习(1)难度:适中 来源:网络收藏 30Directions:In this section,you are goingto reada passagewith ten statementsattachedto it.Eachstatementcontainsinformationgivenin oneof theparagraphs.Identifytheparagraphfromwhichthe informationis derived.You maychoosea paragraphmorethanonce.Each paragraphis marked
2、witha letter.长篇阅读Paper-MorethanMeetstheEyeA)We are surroundedby so muchpaperand card thatit is easyto forgetjust howcomplexit is.Thereare manyvarietiesand gradesof papermaterials,and whilstit is fairlyeasytospotthe varieties,it is far moredifficultto spotthe grades.B)It needstobe understoodthatmostp
3、aperandcardis manufacturedfora specificpurpose,so thatwhilstthecorn-flakepacketmaylooksmart,it is clearlynotsomethingdestinedfor the archives.It is madeto look good,but onlyneedsa limitedlife span.It isalsomuchcheaperto manufacturethanhighgradecard.C)Papercan be madefroman almostendlessvarietyof cel
4、lulose-basedmaterialwhichwillincludemanywoods,cottonsand grassesor whichpapyrusis an exampleand fromwherewegetthewordpaper.Manyof theseareveryspecialized,butthe preponderanceofpapermakinghas beenfromsoft woodand cottonor rags,with the bulk beingwood-based.PaperfromWoodD)In orderto makewoodinto paper
5、it needsto be brokendowninto fine strands.Firstlybypowerfulmachineryandthenboiledwithstrongalkaliessuchas causticsoda,until a finepulpof cellulosefibersis produced.It is fromthispulpthatthefinalproductis made,relyingon the bondingtogetherof the celluloseinto layers.That,in a verysmallnutshell,is the
6、 essenceof papermakingfromwood.However,the realityis rathermorecomplicated.Inordertogiveusourwhitepaperandcard,themakerswill addbleachandothermaterialssuchas chinaclay and additionalchemicals.E)A furtherproblemwithwoodis thatit containsamaterialthatis notcellulose.Somethingcalledlignin.Thisis essent
7、ialforthetreesinceit holdsthecellulosefibrestogether,but if it is incorporatedinto the manufacturedpaperit presentsarchivistswithaproblem.Lignin eventuallybreaksdownand releasesacid productsinto the paper.This willweakenthebondbetweenthecellulosefibersandthepaperwill becomebrittleandlookratherbrowna
8、nd careworn.We haveall seenthis in old newspapersand cheappaperbackbooks.It has beenestimatedthatmostpaperback bookswill havea life of not greaterthanfifty years.Not whatwe needfor our archives.F)Sincethelignincan be removedfromthepaperpulp duringmanufacture,theobviousquestionis whyis it left in the
9、 paper?The answerlies in the factthatligninmakesup aconsiderablepartof the tree.By leavingtheligninin the pulp a papermakercan increasehis paperyieldfroma treeto some95%.Removingit meansa yieldof only35%.It isclearlyuneconomicto removethe ligninfor manypaperand cardapplications.G)It alsomeans,of cou
10、rse,thatlignin-freepaperis goingto be moreexpensive,but thatisneverthelesswhatthearchivistmustlookforinhissupplies.Thereisnopointwhatsoeverin carefullyplacingour valuableartifactsin paperor card thatis goingto hastentheirdemise.Acid is particularlyharmfulto photographicmaterials,causingthemto fade的信
11、息提示词可定位到文章第二段该部分最后提到在制造过程中比高等级的纸便宜根据题干中的信息提示词可定位到题干中的信息提示词可将答案定位到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它会使纸张变得易碎根据题干中的信息提示词可将答案定位到段该部分最后提到许多纸张生产者在生产过程中会保留and is somecasessimplyvanish!H)So,howdo wetell a pieceof suitablepaperor cardfromonethatis unsuitable?Youcannotdo it by simplylooking,andratherdisapp
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