tpo1 31阅读答案详细tpo28 r

TPO>Mostoftheworld’smention“thepressureoftheToshowhowwatercanTPO>Mostoftheworld’smention“thepressureoftheToshowhowwatercanbeforcedunderEarth’sToshowwhygroundwaterismoreplentifulthansurfacefreshwaterTocorrectacommonlymadeerroraboutthelocationofgroundwaterToexplainwhymostgroundwaterliesnearEarth’ssurfacedrinking—isaccountedforgroundwater,whichisstoredintheporesandfracturesinrocks.Thereismorethan50timesasmuchfreshwaterstoredundergroundthaninallthefreshwaterriversandlakesofEarth.AtgreaterdepthswithinEarth,thepressureoftheoverlyingrockcausesporesandcrackstoclose,reducingthespacethatporewatercanoccupy,andParagraph1ismarkedwithQ2Accordingtoparagraph1,differsfromthewaterinriversandlakesintermsofitsalmostcompleteclosureoccursatdepthofabout10kilometers.Thegreatestwaterstorage,therefore,liesnearthesurface.Paragraph1ismarkedwithanQ3Theword"extracted"inthepassageclosestinmeaningAquifers,Porosity,andkept>Groundwaterisstoredinaofrocktypes.Agroundwaterreservoirfromwhichwatercanbeextractediscalledanaquifer.Wecaneffectivelythinkofanaquiferasadepositofwater.ExtractionofwaterdependsontwopropertiesofParagraph2ismarkedwithanQ4Theword"termed"inthepassageclosestinmeaningtheaquifer:porosityA.Q1Inparagraph1,whydoesthe里也是在说thepressureoftheoverlyingrock导致的结果，的地方。因此选那句话。原句说morethan50量大。这里A是饮用性，原就更没提到了答案为丰富的词缀ex-本身就有出的意思。那么A是使用，B是泼因此选C批注[l4]:正确答案：B。也就是被命名为。那么A是D是由于。所以应该选B。causedParagraph2ismarkedwithanpermeability.Betweengrainsarespacesthatcanbefilledwithwater.Thisporespaceisknownasporosityandisexpressedasapercentageofthetotalrockvolume.PorosityisimportantTherateatcausedParagraph2ismarkedwithanpermeability.Betweengrainsarespacesthatcanbefilledwithwater.Thisporespaceisknownasporosityandisexpressedasapercentageofthetotalrockvolume.PorosityisimportantTherateatwhichtheovercomesresistancetowatertoflowthroughrocks,porespacesmustbeconnected.Theabilityofwater,orotherfluids,toflowthroughtheinterconnectedporespacesinrocksistermedpermeability.Fracturesandjointshaveveryhighpermeability.Intheintergranularspacesofrocks,however,fluidmustflowaroundandbetweengrainsinatortuouspath;thiswindingpathcausesaresistancetoflow.Theratewhichtheflowingwaterovercomesthisresistanceisrelatedtothepermeabilityofrock.TheamountofwaterthattheaquiferlikelihoodthatfracturesandwilloccurintheThedepthundergroundaquiferliesatwhichParagraph2ismarkedwithanQ6Theword"compact"inthepassageclosestinmeaning>SedimentsortinganddeeplyinfluencepermeabilityandThemorepoorlysortedorthemoretightlycompactedasedimentis,theloweritsporosityandpermeability.Sedimentaryrocks—themostcommonrocktypeneartheParagraph3ismarkedwithanQ7Accordingtoparagraph3,whenigneousrockserveasansurface—arealsotheWhenithasmanyconnectedWhenitliesnexttometamorphicrockWhenitliesrelativelynearthesurfaceWhenitiscrystallinecommonreservoirsforbecausetheycontainthemostspacethatcanbefilledwithwater.Sandstonesgenerallymakegoodaquifers,whilefiner‐grainedmudstonesaretypicallyimpermeable.Impermeablerocksarereferredtoasaquicludes.Paragraph3ismarkedwithanQ8Accordingtoparagraph3,whatisrelationshipbetweenpermeabilityandQ5Accordingtoparagraph2,whatporositywater‐storagecapacity,but[l5]:正确答案：BA决定于permeabilityofrack，对应本段最后一句。B正确，对应本段第七句（porosityisimportantforwater-storageporosity定位就很好找。C和porosity没有直接关系。D原批注[l6]:正确答案：B。通过后面的and的并列内容面说rarelycontainspace，那选择B压缩的。A是坚硬，C是重的，D是深埋的。[l7]:正确答案：Aigneousrocksmayactasfractures并且要interconnected。所以选A[l8]:正确答案sortingcompaction会共同影响permeability，结合上一permeability不高；另一种是porosity高的同时permeabilityThemoreporesarockhas,thehigherporositybuttheloweritspermeabilityRockswithmanyinternalspacesthatarenotconnectedwitheachotherwillhavehighporositybutlowpermeability.Ifwaterflowsthrougharockeasily,ithashighpermeabilitybutlowporosity.RocksthathavehighpermeabilityThemoreporesarockhas,thehigherporositybuttheloweritspermeabilityRockswithmanyinternalspacesthatarenotconnectedwitheachotherwillhavehighporositybutlowpermeability.Ifwaterflowsthrougharockeasily,ithashighpermeabilitybutlowporosity.Rocksthathavehighpermeabilityhavehighporosityandviceversa.Igneousandmetamorphicrocksmorecompact,commonlycrystalline,andrarelycontainspacesbetweengrains.However,evenigneousandmetamorphicrocksmayactasgroundwaterreservoirsifextensivefracturingoccursinsuchrocksandiftheParagraph3ismarkedwithanTheWater>Thewatertableisundergroundboundarywhichallthecracksandpores批注[l9]:正确答案：DCoating本来是外衣，和涂层的意思。那么A是溪流，B是障碍物，C是数量，D是层所以D符合watertablereachesEarth’swhereitisexpressedasrivers,lakes,andmarshes.■Typically,though,thewatertablemaybetensorhundredsofmetersbelowthesurface.■Thewatertableisnotflatbutusuallyfollowsthecontoursofthetopography.■AbovetheParagraph4ismarkedwithanQ10Paragraph4implieswhichoffollowingabouttherootsof[l10]:正确答案plantroots定位到本段最后一句。说vadosezone给植D都没提到。而只有C没有错误，因为plantroots是从vadosezone汲取的水份，而不是watertable。所以选CTheypreventwaterfromvadoseTheymarktheboundarybetweenvadosezoneandthewatertable.watertableisthevadosethroughwhichrainwaterWaterinthevadosezonedrainsdowntothewatertable,leavingbehindathincoatingofwateronmineralgrains.Thevadosezonesuppliesplantrootsnearthesurfacewithwater.TheydonottypicallygetfromthewaterTheyhelpkeepdroppingwatertableParagraph4ismarkedwithan>Becausethesurfaceofthetableisnotflatbutinsteadrisesandfallswithtopography,groundwaterisaffectedbygravityinthesamefashionassurfacewater.Groundwaterflowsdownhilltotopographiclows.IfthewatertableQ11WhichofthesentencesbelowexpressestheessentialinformationinhighlightedsentenceintheIncorrectchoiceschangethemeaningQ9Theword“coating”inthepassageclosestinmeaningfilledwithwater.Insomecases,importantwaysorleaveoutintersectstheland批注[l11]:正确答案：D。A选项缺少了spring这个条件；B，C选项不正确。D包importantwaysorleaveoutintersectstheland批注[l11]:正确答案：D。A选项缺少了spring这个条件；B，C选项不正确。D包含了原文所有的主干部分确Groundwateronlyflowsoutgroundifthewatertableintersectslandsurface.surfaceatsprings,eithertocollectedthereortosubsequentlyflowfatheralongadrainage.Groundwatercommonlycollectsinstreamdrainagesbutmayremainentirelybeneaththesurfaceofdrystream‐bedsinaridregions.Inparticularlywetyears,shortstretchesofanotherwisedrystream‐bedmayhaveflowingwaterbecausethewatertablerisestointersectthelandsurface.IfthelandsurfaceandthewaterGroundwatermaybedrainedifspringsoccurwherethewatertableintersectsthelandsurface.Wherethewatertablemeetsthelandsurface,groundwaterflowsoutthroughsurfacesprings.Paragraph5ismarkedwithanQ12Paragraph5implieswhichoffollowingaboutthelevelofthewaterSediments:materials(suchasorsmallrocks)thatare[l12]:正确答案：Ayear的描写可以得出根据降的。所以A正确。B不正确，原文明显写到在aridregions幅在写和landsurface的intersects。D原文没提到Itmayriseoffallfromdependingonannualrainfall.Indoesnotvaryinaridregions.bywater,wind,orglacialTopography:theshapeofasuchasEarth’s,includingtheriseandfallofsuchfeaturesasmountainsandvalleysItrarelyintersectsthelandmostItisunrelatedtotherategroundwaterParagraph5ismarkedwithanwherethefollowingsentencecouldbetothe批注[l13]:正确答案：C。要插入的句子说thisisa不是平面有关。所以C的位为前面一句说Thisisaconsequenceoftheslowratemovementofthegroundwater,whichoftenpreventsthewatertablefromattainingaflat(horizontal)level.Wherewouldthesentencebestfit?Clickonsquaretoaddthesentencetothe水位不是平面groundwaterwillflowoutontoQ13Lookatthefoursquares■thatabriefsummaryofthepassageisbelow.CompletethesummarybyselectingtheTHREEanswerchoicesthatexpressthemostimportantideasinthepassage.Somesentencesdonotbelonginthesummarybecausetheyexpressideasthatarenotabriefsummaryofthepassageisbelow.CompletethesummarybyselectingtheTHREEanswerchoicesthatexpressthemostimportantideasinthepassage.Somesentencesdonotbelonginthesummarybecausetheyexpressideasthatarenotpresentedinthepassageorareminorideasinthepassage.Thisquestionisworth2[l14]:正确答案FDragyouranswerchoicestothewheretheybelong.Toremoveananswerchoice,clickonit.Toreviewthepassage,clickVIEWNEXT.Mostoftheworld’spotablewaterisasgroundwaterintheporesandfracturesofundergroundrock,muchofitatdepthsoflessthan1,000meters.Groundwaterreservoirsarebytheporosityandpermeabilityofrockinwhichtheylie,andthe