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1、2022年6月大学英语四级阅读理解练习题（三）2014年6月大学英语四级阅读理解Merchantandpassengershipsaregenerallyrequiredtohavealifepreserverforeverypersonaboardandinmanycases,acertainpercentageofsmallersizesforchildren.AccordingtoUnitedStatesrequirements,lifepreserversmustdesign,reversiblecapableofbeingquicklyadjustedtofittheuninitia
2、tedindividual,andmustbesodesignedastosupportthewearerinthewaterinanuprightorslightlybackwardposition.Sufficientbuoyancy(浮力)tosupportthewearershouldberetainedbythelifepreserverafter48hoursinthewater,anditshouldbereliableevenafterlongperiodofstorage.Thusitshouldbemadeofmaterialsresistanttosunlight,gas
3、oline,andoils,anditshouldbenoteasilysetonfire.?Thepositioninwhichthelifepreserverwillsupportapersonwhojumpsorfallsintothewaterismostimportant,asisitstendencytoturnthewearerinthewaterfromaface-downpositiontoanuprightorslightlybackwardposition,withhisfaceclearofthewater,evenwhenthewearerisexhaustedoru
4、nconscious.Themethodofadjustmenttothebodyshouldbesimple,andself-evidenttouninitiatedpersonseveninthedarkundertheconfusedconditions,whichfollowadisaster.Thus,thelifebereversiblethatitisnearlyimpossibletogetitonwrong.Catches,straps,andtiesshouldbekepttoaminimum.Inaddition,thelifepreservermustbeadjusta
5、bletothewidevarietyofshapesandsizesofwearers,sincethisgreatlyaffectsthepositionoffloatingandtheself-rightingqualities.Asuitablelifealsobecomfortabletowearatalltimes,inandoutofthewater,notsoheavyastoencouragetotakeitoffonshipboardwhiletheshipisindanger,norsoburdensomethatithindersapersoninthewaterwhi
6、letryingtoswim.1Thepassageismainlyabout_.theusesoflifepreserversthedesignoflifepreserversthematerialsforlifepreserversthebuoyancyoflifepreservers查看原文2Accordingtothepassage,alifebefirstofall_.adjustablecomfortableself-evidentself-righting查看原文3UnitedStatesCoastGuarddoesNOTrequirethelifepreservertobema
7、de_.withasfewstringsaspossiblecapableofbeingwornonbothsidesaccordingtoeachwearer'ssizecomfortableandlighttowear查看原文4Bytheuninitiatedindividual(Para.1,Line.4)theauthorreferstotheperson_.whohasnotbeeninstructedhowtousealifepreserverwhohasalittleexperienceinusingalifepreserverwhousesalifepreserverw
8、ithoutpermissionwhobecomesnervousbeforeadisaster查看原文5Whatwouldhappenifapersonweresupportedbythelifepreserverinawrongposition?Thewaveswouldmovehimbackwards.Thewaterwouldchokehim.Hewouldimmediatelysinktothebottom.Hewouldbeexhaustedorunconscious.查看原文AmongthemorecolorfulcharactersofLeadville’sgold
9、enagewereH.A.W.Taborandhissecondwife,ElizabethMcCourt,betterknownasBabyDoe.TheirhistoryisfastbecomingoneofthelegendsoftheOldWest.HoraceAustinWarnerTaborwasaschoolteacherinVermont.WithhisfirstwifeandtwochildrenheleftVermontbycoveredwagonin1855tohomesteadinKansas.Perhapshedidnotfindfarmingtohisliking,
10、orperhapshewasluredbyrumorsoffortunestobemadeinColoradomines.Atanyrate,afewyearslaterhemovedwesttothesmallColoradominingcampknownasCaliforniaGulch,whichhelaterrenamedLeadvillewhenhebecameitsleadingcitizen.Greatdepositsofleadaresuretobefoundhere.hesaid.Asitturnedout,itwassilver,notlead,thatwastomakeL
11、eadville’sfortuneandwealth.Taborknewlittleaboutmininghimself,soheopenedageneralstore,whichsoldeverythingfrombootstosalt,flour,andtobacco.Itwashiscustomtogrubstakeprospectiveminers,inotherwords,tosupplythemwithfoodandsupplies,orgrub,whiletheylookedforore,inreturnforwhichhewouldgetashareinthemin
12、eifonewasdiscovered.Hedidthisforanumberofyears,butnoonethatheaidedeverfoundanythingofvalue.Finallyonedayintheyear1878,sothestorygoes,twominerscameinandaskedforgrub.Taborhaddecidedtoquitsupplyingitbecausehehadlosttoomuchmoneythatway.Thesewerepersistent,however,andTaborwastoobusytoarguewiththem.Ohhelp
13、yourself.Onemoretimewon’tmakeanydifference,Hesaidandwentonsellingshoesandhatstoothercustomers.Thetwominerstook$17worthofsupplies,inreturnforwhichtheygaveTaboraone-thirdinterestintheirfindings.Theypickedabarrenplaceonthemountainsideandbegantodig.Afterninedaystheystruckarichveinofsilver.Taborbou
14、ghtthesharesoftheothertwomen,andsotheminebelongedtohimalone.Thismine,knownasthePittsburghMine,made1300000forTaborinreturnforhis$17investment.LaterTaborboughttheMatchlessMineonanotherbarrenhillsidejustoutsidethetownfor$117000.ThisturnedouttobeevenmorefabulousthanthePittsburgh,yielding$35000worthofsil
15、verperdayatonetime.Leadvillegrew.Taborbecameitsfirstmayor,andlaterbecamelieutenantgovernorofthestate.6LeadvillegotitsnameforthefollowingreasonsEXCEPT_.becauseTaborbecameitsleadingcitizenbecausegreatdepositsofleadisexpectedtobefoundtherebecauseitcouldbringgoodfortunetoTaborbecauseitwasrenamed查看原文7The
16、wordgrubstakeinparagraph2means_.tosupplyminerswithfoodandsuppliestoopenageneralstoretodoone’scontributiontothedevelopmentoftheminetosupplyminerswithfoodandsuppliesandinreturngetashareinthemine,ifonewasdiscovered查看原文8Tabormadehisfirstfortune_.bysupplyingtwoprospectiveminersandgettinginreturnaon
17、e-thirdinterestinthefindingsbecausehewaspersuadedbythetwominerstoquitsupplyingbybuyingthesharesoftheotherasalandspeculator查看原文9TheunderlyingreasonforTabor’slifecareeris_.purelyaccidentalbasedontheanalysisofminer’sbeingverypoorandtheirpossibilityofdiscoveringprofitableminingsitethroughthe
18、helpfromhissecondwifeheplannedwellandaccomplishedtargetsstepbystep查看原文10Ifthispassageisthefirstpartofanarticle,whomightbeintroducedinthefollowingpart?Tabor’slife.Tabor’ssecondwife,ElizabethMcCourt.Othercolorfulcharacters.Tabor’sothercareers.查看原文第7页 共7页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页