徐托福tpo1-33阅读答案详细解析tpo26r

TPO26-R-2解Q1:Accordingtoparagraph1,waterprovidesallofthefollowingessentialfunctions ntsimproving nts’abilitytoabsorbpreventingnts ingservingasarawmaterialforQ2:Paragraph3suggeststhatduringadryyearproduceevenmoreseedsthaninawetdonotsproutfromtheirbloommuchlaterthaninawetaremoreplentifulthanHowisparagraph2relatedtoparagraphParagraph2providesageneraldescriptionofdesertnts,andparagraph3providesascientific

SurvivalofntsandAnimalsinDesertTheharshconditionsindesertsareintolerableformostntsandanimals.Despitetheseconditions,however,manyvarietiesofntsandanimalshaveadaptedtodesertsinanumberofways.Mostnttissuesdieiftheirwatercontentfallstoolow:thenutrientsthatfeedntsaretransmittedbywater;waterisarawmaterialinthevitalprocessofphotosynthesis;andwaterregulatesthetemperatureofantbyitsabilitytoabsorbheatandbecausewatervaporlosttotheatmospherethroughtheleaveshelpstolowernttemperatures.■Watercontrolsvolumeofntmatterproduced.■Thedistributionofntswithindifferentareasofdesertisalsocontrolledbywater.■Someareas,becauseoftheirsoiltexture,topographicalposition,ordistancefromriversorgroundwater,havevirtuallynowateravailabletonts,whereasothersdo.■[x3]:文章结构题：问第2段第3段之间的关系，第二段先提出两[x3]:文章结构题：问第2段第3段之间的关系，第二段先提出两

[x1]:EXEPTAtheatmospherethroughtheleaveshelpstolower nttemperatures.C选项：thenutrientsthatfeed aretransmittedbywatervitalprocessofphotosynthesis批注批注[x2]:Suggest推理题： AB选项，正确，定位句为：Thisdesertsoil.这句话说在雨季，会产生 CDTips：suggest题，一般抽象的一句，有时候的是取反。大部分答1Paragraph2dividesntsintoParagraph2dividesntsintocategories,andparagraph3providesfurtherinformationaboutoneofthesecategories.Paragraph2proposesonewayofdividingdesertntsintocategories,andparagraph3exinsoneproblemwiththismethodofclassification.Paragraph2discussestwocategoriesofdesertnts,andparagraph3introducesathirdcategoryof

Theephemeralntsevadedrought.Givenayearoffavorableprecipitation,suchntswilldevelopvigorouslyandproducelargenumbersofflowersandfruit.Thisreplenishestheseedcontentofthedesertsoil.Theseedsthenliedormantuntilthenextwetyear,whenthedesertbloomsagain.

Insayingthatephemeralswill

批注[x4]:细节题，其 词汇“vigorously"whenthereisfavorabletheauthormeansthattheirdevelopmentwillstrongandQ5:Theword“countering”inthepassageisinmeaning

Theperennialvegetationadjuststotheariditybymeansofvariousavoidancemechanisms.

Vigorously的意思是充沛，答案自然DmakinguseactingQ6:Accordingtoparagraph4,somedesertntswithrootsystemsthatareextraordinarilywelldevelopedhaverelativelylittlegrowthveryleafyabovegroundnonwoodynttissueresistanttowaterstoredwithintheirQ7:Theword“assured”inthepassageisclosestmeaning Q8:Whatdo“thedatepalm,tamarisk,andmesquite"haveincommon?

Mostdesertntsareprobablybestclassifiedasxerophytes.Theypossessdrought-resistingadaptations:lossofwaterthroughtheleavesisreducedbymeansofdensehairscoveringwaxyleafsurfaces,bytheclosureofporesduringthehottesttimestoreducewaterloss,andbytherollinguporsheddingofleavesatthebeginningofthedryseason.Somexerophytes,thesucculents(includingcacti),storewaterintheirstructures.Anotherwayofcounteringdroughtistohavealimitedamountofmassabovegroundandtohaveextensiverootnetworksbelowground.Itisnotunusualfortherootsofsomedesertperennialstoextenddownwardmorethantenmeters.Somentsarewoodyintype—anadaptationdesignedtopreventcollapseofthenttissuewhenwaterstressproduceswilting.Anotherclassofdesertntisthephreatophyte.Thesehaveadaptedtotheenvironmentbythedevelopmentoflongtaprootsthatpenetratedownwarduntiltheyapproachtheassured

[x7单词题：确保的意思，答案选择C[x8]:A选项：foundtogether C选项，因为这三个植物都是前面观点句，Anotherclassof ntthephreatophyte.的例子。所以正确D选项：breakingthroughhardsoils[x5[x5]:批注[x6]:细节题：定位词：roothaveextensiverootnetworksground.,B选项：leafyabovegroundC2TheyarealwaysfoundTheydependonsurfacewaterprovidedbystreams,springs,andlakes.TheyareTheirrootsarecapableofbreakingthroughhardQ9:Whichofthesentencesbelowbestexpressestheessentialinformationinthehighlightedsentenceinthepassage?IncorrectchoiceschangethemeaninginimportantwaysorleaveoutessentialOnewayanimalsescapeisbyenteringastateofextendeddormancy,knownasaestivation,duringthehottestanddriesttimesofyear.Animalscanescapewithoutusingdirectaction,oraestivation,simplybyreducingtheirmetabolicrateandbodytemperature.Theactionsthatananimalusestoescapeareknownasaestivation,whichsometimesinvolvesareductioninmetabolicrateorbodytemperature.Whentheweatherisespeciallyhotanddry,ananimalmaysufferfromaconditionknownasaestivation,atwhichpointtheanimalneedstoescape.

watersupplyprovidedbygroundwater.Amongthesentsarethedatepalm,tamarisk,andmesquite.Theycommonlygrownearstreamchannels,springs,oronthemarginsoflakes.[x9]:写，那个hottestanddriesttimes是原B选项：withoutusingdirectaction,CsometimesAnimalsalsohavetoadapttodesertconditions,andtheymaydoitthroughtwoformsofbehavioraladaptation:theyeitherescapeorretreat.Escape[x9]:写，那个hottestanddriesttimes是原B选项：withoutusingdirectaction,CsometimesQ10:Itcanbeinferredfromparagraph5thatallofthecesdesertanimalsretreattoprovideshadefromthe eareceswheresoffoodareleavetheanimalsvulnerableto

Seasonalmigrationisanotherformofescape,especiallyforlargem lsorbirds.Thetermretreatisappliedtotheshort-termescapebehaviorofdesertanimals,anditusuallyassumesthepatternofadailyrhythm.Birdsshelterinnests,rockoverhangs,trees,anddenseshrubstoavoidthehottesthoursoftheday,whilem lsliketheratburrowunderground.

[x10推断题：包含关系。就是上面那个改写句，duringwhichanimalsreducetheirmetabolicrateandbodytemperature，所以就是避免光。A选项正B，C，DABAB选项：onlyC选项：both这个词原文没提，而且Thesparsedistributionofthefeathers,所conditionsarehottheostricherectsthemonitsback。3adaptationhelpstheostrichcopewithhotdesertEachofitsfeathersisveryshortandItswingsproduceonlyla lairmovementwhenflap.Itsfeathersareverythicklysetonbothitsbackanditswings.Itcanmakeitsfeathersstanduponits

andmorphological(structural)adaptationsthatenablethemtowithstandextremeconditions.Forexample,theostrichhasplumagethatissoconstructedthatthefeathersarelongbutnottoodense.Whenconditionsarehot,theostricherectsthemonitsback,thusincreasingthethicknessofthebarrierbetweensolarradiationandtheskin.Thesparsedistributionofthefeathers,however,alsoallowsconsiderablela lairmovementovertheskinsurface,therebypermittingfurtherheatlossbyconvection.Furthermore,thebirdsorientthemselvescarefullywithregardtotheSunandgentlyflaptheirwingstoincreaseconvectioncooling.Q12:Lookatthefoursquares[■]thatindicatewhere

Theharshconditionsindesertsareintolerableformostntsandanimals.Despitetheseconditions,however,manyvarietiesofnts[zachangzi12本题插入句有andanimalshave[zachangzi12本题插入句有Theincreaseinrewardstilldidnotattractyoungpeopletothishardlife,andconvictedcriminalsandslaveswerepressedintoservicesWherewouldthesentencebestDirections:Selectfromthesevenphrasesbelowthetwophrasesthatcorrectlycharacterizespecialadaptationsfoundprimarilyindesertannualsandthethreephrasesthatcorrectlycharacterizespecialadaptationsfoundprimarilyindesertperennials.Selecteachphraseyouselectintheappropriatecolumnofthetable.Thisquestionisworth3points.

numberofways.Most nttissuesdieiftheirwatercontentfallstoolow:thenutrientsthat ntsaretransmittedbywater;waterisarawmaterial vitalprocess photosynthesis;andwaterregulatesthetemperatureofa ntbyitsabilitytoabsorbheatandbecausewatervaporlosttotheatmospherethroughtheleaveshelpstolower