Unit4 单元过关演练

2/2Unit4单元过关演练本套试卷总分120分。考试时间100分钟。第一部分阅读(共两节,满分50分)第一节(共15小题;每小题2.5分,满分37.5分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。ADonnaStricklandwasawardedthe2018NobelPrizeinPhysicsjointlywithArthurAshkinandGérardMourou.It’sthefirsttimein55yearsthatawomanhaswonthisfamousprize,butwhyhasittakensolong?Welookatfiveotherpioneeringfemalephysicists—pastandpresent—whoactuallydeservetheprize.JocelynBellBurnellPerhapsthemostfamoussnub(冷落):then-studentBelldiscoveredthefirstradiopulsars(射电脉冲星)in1967,whenshewasaPhDstudentatUniversityofCambridge.TheNobelPrizethatrecognizedthislandmarkdiscoveryin1974,however,wenttohermalesupervisor,AntonyHewish.Recentlyawardeda$2.3mBreakthroughPrize,whichshegaveawaytohelpunder-representedstudents,shejokedtoTheGuardian,“IfeelI’vedoneverywelloutofnotgettingaNobelPrize.”LeneHauHauisbestknownforleadingtheresearchteamatHarvardUniversityin1999thatmanagedtoslowabeamoflight,beforemanagingtostopitcompletelyin2001.OftentoppingNobelPrizepredictionlists,could2019beHau’syear?VeraRubinRubindiscovereddarkmatterinthe1980s,openingupanewfieldofastronomy.Shediedin2016,withoutrecognitionfromthecommittee.Chien-ShiungWuWu’s“Wuexperiment”helpeddisprovethe“lawofconservationofparity(宇称守恒定律)”.Herexperimentalworkwashelpfulbutneverhonoured,andinstead,hermalecolleagueswonthe1957NobelPrizefortheirtheoreticalworkbehindthestudy.LiseMeitnerMeitnerledgroundbreakingworkonthediscoveryofnuclearfission.However,thediscoverywasacknowledgedbythe1944NobelPrizeinChemistry,whichwaswonbyhermaleco-leader,OttoHahn.()1.WhenwasthediscoveryofradiopulsarsrecognizedbytheNobelcommittee?A.In1944. B.In1967. C.In1974. D.In1980.()2.WhichwomanismostlikelytowinaNobelPrizelateraccordingtothetext?A.DonnaStrickland. B.JocelynBellBurnell.C.LeneHau. D.VeraRubin.()3.Whatdoweknowaboutthefivefemales?A.Thefivefemalescientistsdidgreatlyinchemistry.B.VeraRubinhadopenedupanewfieldingeometry.C.LiseMeitner’steacherwonaNobelPrizeforherwork.D.Alltheirfindingshaven’tbeenrecognizedbytheNobelcommittee.BJeromeKarleandIsabellaLugoskimetintheirfirstphysicalchemistryclassattheUniversityofMichiganin1940.JeromeKarlewasinhisfirstyearofdoctoralwork,IsabellaLugoskiwasinherlastyearasanundergraduate(大学本科生),andtheywerelaboratorypartners.However,theydidn’tgetalongwellatfirst.IsabellaLugoskilookedbackonthepast,“Iwalkedintothephysicalchemistrylaboratoryandtherewasayoungmaninthedesknexttominewithhisequipmentallsetuprunninghisexperiment.Idon’tthinkIwasverypoliteaboutmyquestion.Iaskedhimhowhegotthereearlyandhadeverythingallsetup.Hedidn’tlikethat.Sowedidn’ttalktoeachotherforawhile.”Theirrelationshipgotgoingastheycompetedforthetopgradeinthatcourseandtheystartedtobuildconnectionbecausebothofthemwereinterestedinchemistry.Theymarriedin1942.By1946,bothoftheKarleshadearneddoctoratesinphysicalchemistry,and,afteraperiodoftimeattheUniversityofChicagoworkingontheManhattanProject,theymovedtoWashingtonD.C.tojointheUSNavalResearchLaboratory.EachspecializedinadifferentaspectofX-raycrystallography(晶体学):Jeromefocusedondevelopingequations(方程式)thatcoulddeterminehowatoms(原子)werearrangedinsidecomplexmolecules,whileIsabellaranpracticalexperimentstotesthowwelltheequationsworked.Workingtogether,theycreatedwhatisnowcalledthedirectmethodfordeterminingmolecularstructures(分子结构),whichhasallowedscientiststoeffectivelystudyandcopycomplexorganicmoleculestocontinuefurtherstudy.JeromeKarlewasawardedtheNobelPrizeinChemistryin1985.AlthoughhewasdisappointedthattheNobelcommitteehadignoredIsabella’scontributiontothatwork,shewasunfazed.Atthatpoint,shehadalreadywonmoreawardsandprizemoneyforherexperimentalworkthanhehad.()4.WhatdidIsabellaLugoskidowhenshefirstmetJeromeKarle?A.Sheblamedhimforhisbeinglate. B.Shesetupallhisequipmentforhim.C.Sheaskedhimaquestionimpolitely. D.Sheobservedhisexperimentsilently.()5.WhatmadeJeromeKarleandIsabellaLugoskibecomeconnected?A.Theircommoninterestinchemistry. B.Theirwonderfulmarriagesince1940.C.Theirpleasantfirsttalkinalaboratory. D.Theirsuccessfulcooperationincourses.()6.WhatisParagraph4mainlyintendedtoshow?A.TheKarles’encouragingfurtherstudy. B.TheKarles’goodteamworkinscience.C.HowtheKarlesworkedwithothers. D.WhytheKarleswontheNobelPrize.()7.Whichofthefollowingbestexplains“unfazed”underlinedinthelastparagraph?A.Generous. B.Touched.C.Shocked. D.Calm.CScientistsmayhavefoundawaytoreduceshortageoftypeOblood.TypeOisthekindofbloodthathospitalsmostoftenneed.WhattheresearchersaretestingisaneasierwaytomaketypeObloodoutofotherkindsofblood.Therearefourmainkindsofblood.Mostpeoplebornwithoneofthesefour:TypeA,TypeB,TypeABorTypeO.TypeOcanbesafelygiventoanyone.Soitiscommonlyusedwhenapersonisinjuredorsickandhastohaveblood.Thedifferencesamongbloodtypesarelinkedtowhetherornotredbloodcellscontaincertainkindsofsugarmolecules(分子).Thesemoleculesarefoundonthesurfaceofthecells.Theyareknownasantigens(抗原).TheseantigensarefoundwithtypeA,BandABbloodbutnotwithtypeO.Morethantwenty-fiveyearsago,scientistsfoundthattheantigenscouldberemovedtocreatewhattheycalleduniversal-typecells.Theycouldberemovedwithchemicalscalledenzymes(酶).Butlargeamountsofenzymeswererequiredtomakethechange.DoctorHenrikClausenoftheUniversityofCopenhageninDenmarkledthestudy.Thenextstep,hesays,istocompletesafetytests.TheteamisworkingwiththeAmericancompanyZymeQuesttotestthenewmethod.Ifitmeetssafetyrequirementsandisnottoocostly,itcouldbecomeawidelyusedlife-savingtooltoincreasethesupplyofuniversalblood.()8.HowdoscientistsdealwiththeproblemoflackingtypeOblood?A.HopemorepeopletodonatetypeOblood.B.MakethemostofthepresenttypeOblood.C.DevelopnewwaysofusingtypeOblood.D.MaketypeObloodoutofotherkindsofblood.()9.Whatmake(s)peoplehavedifferentkindsofblood?A.Sugarmoleculesinredbloodcells.B.People’sdifferentlivingconditions.C.People’svariousimmunesystems.D.Thevarietyofpeople’scellsandgenes.()10.Whatcanweinferfromthetext?A.TypeObloodcanbesafelygiventoanyone.B.Antigenscouldeasilyberemovedtocreateuniversalblood.C.ADanishcompanywantedtoinvolveitselfinstudyingblood.D.Thenewmethodisnotsafeenoughtobeputintouseinhospitalsnow.()11.Whatisthebesttitleforthetext?A.FourdifferentkindsofbloodB.AnewwaytomaketypeObloodC.ThelatestresearchonbloodtypeD.FindthepropertypeofbloodD3-Dprintingisarecenttechnologicaldevelopmentthathasstartedmakingitswayintothemarketplace.Itisawayofmaking3-Dobjectsfromcomputermodels.3-Dprintingworksbyaddingtogetherlayersofmaterial.Thispatternisrepeateduntilthelayersformashapeforalmostanypurpose.Thealmostunlimitedpossibilityof3-Dprintingisquicklyleadingtoarevolutioninhowthingsaremadeandproduced.Aswithmosttechnology,3-Dprintingmayhelptocreatethingsthatcouldbenefithumans.However,itcouldalsobeusedtocreatethingsthatcouldharmotherpeople.Oneofthepromisingaspectsof3-Dprintingisthatitmayhelpdoctorstreatpatientsinneed.Currently3-Dprintingisbeingusedtocreateprostheses(假体)thathelpreplacemissingnosesandeyeballs,thusgreatlycuttingdownontheusualwaittimeforanewprosthesis.Dentistsarealsousing3-Dprinterstocreatecustomtoothbrushesforpatients’teeth.Thetoothbrushfitsaperson’steethwell,whichmeansthatheorshegetsamuchcleanermouththanwithregulartoothbrushes.Manyscientistsseethepotentialfor3-Dprintingtocreatereplacementorgansforpeoplewhoneedorgantransplants.Thiswouldsavelivesasitremovestheneedforsuchpatientstowaitforanorgandonation(捐献).Althoughmanypeoplebelieve3-Dprintingisapositivetechnologythatcouldhelphumans,itmayalsohavetheoppositeeffect.Thereisarecentcontroversy(争议)abouttheabilityof3-Dprintingtoproducearmssuchasguns.Recently,oneorganizationannouncedtheplanstoproducea3-Dplasticgun.Anyonewiththepropertechnologyandwiththedeterminationtomakeaguncouldpotentiallydoso.Willthefutureof3-Dprintingprovidehopeordangerforhumans?()12.Accordingtothearticle,howdoes3-Dprintingwork?A.Ithelpscompaniesenterthemarketplace.B.Itaddstogetherlayersofmaterialtomakeashape.C.Ituses3-Dobjectstomakecomputermodels.D.Itusesprinterstomakedifferentmodelsofcomputers.()13.Accordingtothearticle,whatisonepossiblefuturebenefitof3-Dprinting?A.Itmayhelptopreventdeaths. B.Itcancreatecontroversy.C.Itcanmakeatoothbrush. D.Itcouldproducecomputers.()14.Whichparagraphtalksaboutthecontroversialaspectsof3-Dprinting?A.Paragraph1. B.Paragraph2.C.Paragraph3. D.Alloftheabove.()15.Whatcanbeinferredfromthearticle?A.Itisnotyetknownwhethertherewillbemorebenefitsthandangersin3-Dprinting.B.Mostofcompanieswillstarttouse3-Dprintingtechnologyinthefuture.C.Soldierswillbenefitgreatlyfromadvancesin3-Dprinting.D.Thegovernmentwillprobablyforbid3-Dprintingbecauseitistoodangerous.第二节(共5小题;每小题2.5分,满分12.5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。Franklin’sexperiment:Howmuchistrue?BenjaminFranklin’sfamouslightningexperimenthasintroducedgenerationsofchildrentoscience.16.

Thewell-knownstoryisthatFranklinflewakiteduringastormin1752.Atthattime,therewasmuchinterestinelectricity.Peoplewantedtoknowiflightningwasreallyproducedbyelectricity.17.Heraisedthekitewithapieceofstringtiedtoit.Ametalkeywasattachedtothestring.Aflashoflightninghitthekite,andelectricitywasconductedthroughthestringtothekey.18.This,hesaid,provedthatlightningwasaformofelectricity.

Foryears,schoolshavetaughtthisstoryandithasinspiredusandtaughtusthatscientificexperimentsareimportanttoestablishthetruthandtocontributetowardslaterscientificdiscoveriesandinventions.However,neitherthestorynorthedetailsoftheexperimentareentirelytrue.AlthoughithasbeenprovedthatFranklin’sexperimenttookplace,morethanonescientisthasquestionedwhatreallyhappened.19.ButscientistsallagreethatifFranklinhadactuallytouchedthekey,hewouldcertainlyhavediedfromtheelectricshock.

Scientistsoftenquestionacceptedideasbecausetheywanttoestablishthefacts.SomehaveevenquestionedthestoryabouttheapplethatfellonNewton’sheadandledhimtocomeupwithhistheoryofgravity.20.Butinscience,factsshouldbeprovedbyexperimentsandresearch,andweshouldnotalwaysbelieveeverythingwereadorhear—evenifitisagreatstory.

A.Franklinwasoneofthem.B.Thedetailsaboutthestringandthekeyaretrue.C.It’struethatmanydiscoveriesstartwithanexperiment.D.Admittedly,fictionisoftenmoreinterestingthanthetruth.E.Franklinthentouchedthekeywithhisfingerandgotanelectricshock.F.However,newresearchsuggeststhatthestorymaybefictioninsteadoffact.G.Thisexperimentprovesbeyondanydoubtthatlightningisanelectricphenomenon.第二部分语言运用(共两节,满分30分)第一节(共15小题;每小题1分,满分15分)阅读下面短文,从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。Angelausedtofly.Usingher21forwings,Angelawouldrunfasterthananyone.Now,shethought,“Iam22thaneveryone.”Shewasthelasttogetofftheschoolbus,withthehelpofwalkingsticks.

“YoumustbeAngela!”agirlcametoher.“I’mLaurie,yourinstructor.Areyoureadytolearntoski?”“No,”Angelaanswered,butstillfollowedLaurieintothechangingroom.“Icanunderstandhowyoufeel.”BeforeAngelasaidanything,Laurie23hertrousersandshowedherleft24leg.Angela’smouthdroppedopen.“Three-trackskiing(三板滑雪)wasdesignedforpeoplelikeus.IfIcanlearntoski,25canyou,”Lauriesaid.Theyputontheregularski,andusedoutriggers(支架)to26.

LaurieandAngelamadetheirwaytothe27track.Angelaspentthemorningclimbingandfalling,slidingandfalling,andturningand28.Shefeltdisappointedand29.

“OK,lastonetrybeforelunch,”Lauriesaidaftertheyclimbedupthehillonceagain.30AngelamanagedtofollowLauriedownthesmallhillwithoutfalling.WhenshestoppedbesideLaurieatthebottom,shepunchedherfistintheairandsaid,“Yes!”

Afterlunch,theymovedtoahigherplace.Lookingdownfromthetop,Angelafelt31.“Ican’tgodownthat!”shecried.

“Followme!”Laurie32.“Youaredoinggreat!TrytobeFlyingAngelaagain.”“ThatwasbeforeIlostmyleg33cancer,”Angelawhispered.“Trust34,”Lauriesaid.

Angelatookadeepbreath,thenleanedforward,spedup,tookturnsandskieddownthehill.Faster.Faster.Itfeltlike35.

()21.A.hands B.arms C.body D.feet()22.A.stronger B.weaker C.swifter D.slower()23.A.rolledup B.dressedup C.puton D.reliedon()24.A.powerful B.magical C.universal D.artificial()25.A.either B.neither C.so D.also()26.A.explore B.solve C.replace D.balance()27.A.advanced B.beginner C.longest D.fast()28.A.falling B.going C.skiing D.moving()29.A.sensitive B.hopeless C.energetic D.confident()30.A.Luckily B.Briefly C.Logically D.Peacefully()31.A.frightened B.frightening C.excited D.exciting()32.A.shouted B.screamed C.whispered D.encouraged()33.A.resultingin B.accordingto C.becauseof D.sothat()34.A.myself B.I C.yourself D.you()35.A.running B.skiing C.walking D.flying第二节(共10小题;每小题1.5分,满分15分)阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。InancientChinalivedanartist36.paintingswerealmostlifelike.Theartist’sreputationhadmadehimproud.Onedaytheemperorwantedtogethisportrait(画像)donesohecalledallgreatartiststocomeandpresenttheir37.(fine)work,sothathecouldchoosethebest.Theartistwassurehewould38.(choose),butwhenhepresentedhismasterpiecetotheemperor’schiefminister,theoldmanlaughed.ThewiseoldmantoldhimtotraveltotheLiRiver—perhapshecouldlearnalittlefromthegreatestartistintheworld.

Filledwith39.(curious),theartistpackedhisbagsandleft.40.heaskedthevillagersonthebanksoftheriverwherehecouldfindthelegendary(传奇的)artist,theysmiledand41.(point)downtheriver.Thenextmorninghehiredaboatandsetout42.(find)thewell-knownpainter.Asthesmallboatmoved43.(gentle)alongtheriverhewasleftspeechlessbythemountainsbeingsilentlyreflectedinthewater.Hepassedmilkywhitewaterfallsandmountainsinmanyshadesofblue.Andwhenhesawthemistsrisingfromtheriverandthesoftclouds44.(surround)themountaintops,hewasreducedtotears.Theartistwasfinallyhumbled(轻松打败)bythegreatestartist45.earth,MotherNature.

第三部分写作(共两节,满分40分)第一节(满分15分)假定你是李华,你们学校下周将要举行全校英语演讲比赛,学校安排外教Jay选拔一名主持人,请你给Jay写一封推荐信,推荐你的同班同学王明。内容包括:1.写信目的;2.推荐理由;3.希望给予考虑。注意:1.词数80左右;2.可以适当增加细节,以使行文连贯;3.开头和结尾已给出,但不计入总词数。DearJay,________________________________________________________________________________________________________________________________Yours,LiHua第二节(满分25分)阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。续写的词数应为150左右。Growingup,wedidn’thavemuchmoney.Actually,wehadverylittle.Welivedinasmallhousewithholesinthefloor.Weworeoldclothesandhadlittlefood.Withthreelittlemouthstofeed,mydaddyworkedasagatekeeperinamiddleschoolandthenfarmedourownsmallfielduntildark.DaddyprovidedthebesthecouldforusandMamamadeourclothesonheroldsewingmachine.Wecouldhaveeasilyappliedforwelfare,butmyparentswouldn’tthinkofit.Ourfamilywasfullofloveandproudofhardwork.ThenIwasinthethirdgrade,inMrsHarper’sclass.Oneday,MrsHarperbroughtahugeboxoftoystoschooltogiveto“poor”children.Everyonewasinvitedtobringsomeofhisorherowntoysfromhometoputinthebox.Needlesstosay.Ihadhardlyanytoysofmyowntooffer.MyeyesgotbigthenextdaywhenIlookedintothatbox.Itwaslikeadreamworldtome—somanycolourfultoys!Clearly,MrsHarpersawthecuriouslookonmyface,andalthoughIneveraskedwithasmile,sheletmepickouttwotoysformyselffromthebox.IwassothankfulandthoughtthatIwastheluckiestgirlinthewholeworld!WhenIgothome.Icouldn’twaittoshowMamawhatIbroughtfromtheschool.SheadmiredthetoysandaskedwhereIgotthem.ItoldherabouttheboxforthepoorchildrenandthatMrsHarperhadletmepicktwotoysfromthebox!Mamathoughtforafewsecondsandsaidinaverysweetway,“No…no.Youcan’tkeepthesetwotoys.”Paragraph1:Mamaexplainedtomethatthosetoyswerefor“poor”children._________________________________________________________________________________________________________________________________________Paragraph2:MrsHarpersaidsheunderstoodwhatMamameant.__________________________________________________________________________________________________________________________________________________

参考答案第一部分第一节A【文章大意】本文介绍了五位先驱女物理学家,她们在科学研究方面做出了巨大贡献,但由于种种原因而未能获得诺贝尔奖。1.C细节理解题。根据JocelynBellBurnell中“…then-studentBelldiscoveredthefirstradiopulsars(射电脉冲星)in1967…”及“TheNobelPrizethatrecognizedthislandmarkdiscoveryin1974…”可知,第一个射电脉冲星在1967年被发现,该项成果被授予诺贝尔奖是在1974年,故选C。2.C推理判断题。根据LeneHau中“OftentoppingNobelPrizepredictionlists…”可知,LeneHau经常被列于诺贝尔奖预测名单榜首,她最有可能之后获诺贝尔奖,故选C。3.D推理判断题。根据第一段最后一句可知,文中介绍的5位女科学家都应该获得诺贝尔奖,但由于各种原因未能获奖,故选D。B【文章大意】本文是一篇记叙文,主要叙述了JeromeKarle和IsabellaLugoski这两位在化学领域取得卓越成就的化学家的故事。4.C细节理解题。根据第二段中“‘Idon'tthinkIwasverypoliteaboutmyquestion.Iaskedhimhowhegotthereearlyandhadeverythingallsetup.’”(我觉得我的问题不太礼貌。我问他怎么这么早到那儿,把一切都安排好了。)可知IsabellaLugoski第一次见到JeromeKarle时她不礼貌地问了他一个问题。5.A细节理解题。根据第三段中“…theystartedtobuildconnectionbecausebothofthemwereinterestedinchemistry.”(他们开始建立关系,因为他们都对化学感兴趣。)可知,对化学的共同兴趣让JeromeKarle和IsabellaLugoski建立了关系。6.B段落大意题。根据第四段内容,尤其是第四段第一句可知,第四段主要展示夫妇俩在科学上的良好团队合作。7.D词义猜测题。根据“AlthoughhewasdisappointedthattheNobelcommitteehadignoredIsabella'scontributiontothatwork…”(尽管他对诺贝尔委员会忽视了Isabella对这项工作的贡献感到失望……)可知,画线词所在句与前半句是转折关系,因此推断Isabella尽管被忽视了贡献,但是她很平静。故画线单词意思是“平静的,冷静的”。C【文章大意】本文是一篇说明文,介绍了目前科学家正在测试的一种新的O型血的制造方法,这一方法可以解决医院和血库中O型血的匮乏问题。8.D细节理解题。根据第一段中“WhattheresearchersaretestingisaneasierwaytomaketypeObloodoutofotherkindsofblood.”可知,研究人员正在测试的是一种更容易的方法,从其他类型的血液中制造O型血液。由此可知,科学家通过使用其他类型的血液来制造O型血,以解决O型血的短缺问题。9.A细节理解题。根据第三段中“Thedifferencesamongbloodtypesarelinkedtowhetherornotredbloodcellscontaincertainkindsofsugarmolecules(分子).”可知,血型之间的差异与红细胞是否含有某些类型的糖分子有关。故选A项。10.D推理判断题。根据最后一段中“Thenextstep,hesays,istocompletesafetytests.TheteamisworkingwiththeAmericancompanyZymeQuesttotestthenewmethod.Ifitmeetssafetyrequirementsandisnottoocostly,itcouldbecomeawidelyusedlife-savingtooltoincreasethesupplyofuniversalblood.”(他说,下一步是完成安全测试。该团队正与美国公司ZymeQuest合作,测试新方法。如果它符合安全要求,而且价格不贵,它可能会因为可以增加O型血的供应,而被广泛应用于拯救生命。)可知,新的方法还没有完成安全测试,由于安全性还不确定,还没有投入使用。D项(新的方法还没有安全到现在就能在医院投入使用)切题。11.B主旨大意题。根据“WhattheresearchersaretestingisaneasierwaytomaketypeObloodoutofotherkindsofblood.”(研究人员正在测试的是一种更容易的方法,从其他类型的血液中制造O型血液。)可知,本文主要介绍的是一种新的制造O型血的方法,故选B项。D【文章大意】本文是一篇说明文,介绍了3D打印技术的发展在某些方面给人类带来的利弊,比如既可以打印假体造福人类,也会被用来生产枪支等武器。12.B细节理解题。根据第一段中“3-Dprintingworksbyaddingtogetherlayersofmaterial.Thispatternisrepeateduntilthelayersformashapeforalmostanypurpose.”可知,3D打印是通过将多层材料叠加在一起实现的。这种模式会一直重复,直到材料层形成一个形状。B项(它把多层材料叠加在一起形成一个形状)符合以上说法。13.A推理判断题。根据第二段中“Manyscientistsseethepotentialfor3-Dprintingtocreatereplacementorgansforpeoplewhoneedorgantransplants.Thiswouldsavelivesasitremovestheneedforsuchpatientstowaitforanorgandonation(捐献).”(许多科学家认为,3D打印技术有潜力为需要器官移植的人制造替代器官,这将拯救生命,因为它可以消除这类病人等待器官捐赠的必要。)可知,3D打印技术能应用于器官移植,那么病人就不需要等待器官捐献,这可能会拯救生命。A项(它可能帮助阻止死亡)符合以上说法。14.C段落大意题。根据第三段中“Thereisarecentcontroversy(争议)abouttheabilityof3-Dprintingtoproducearmssuchasguns.”(最近就3D打印技术可以生产武器诸如枪支这一问题产生了争议。)可知,本段讨论了3D打印技术的争议。故选C。15.A推理判断题。根据文章的主要内容,尤其是最后一段中“Willthefutureof3-Dprintingprovidehopeordangerforhumans?(3D打印的未来给人类带来希望还是危险?)”可以推测出,3D打印技术究竟能给人类带来好处还是危险还是未知的。A项(3D打印的好处是否大于危险还是未知的)符合以上推断。第二节【文章大意】本文是一篇说明文,主要讨论了富兰克林的实验有多少是真的?因为在科学中,事实应该通过实验和研究来证明,不应该依据一个伟大的故事。16.F由文章标题“富兰克林的实验:有多少是真的?”和第四段前两句“然而,这个故事和实验的细节都不是完全真实的。尽管富兰克林的实验已经被证明发生过,但不止一位科学家质疑到底发生了什么。”可知,富兰克林著名的闪电实验虽让孩子们认识到了科学,但这个故事可能是假的,不是真的。故F项(然而,新的研究表明,这个故事可能是虚构的,而不是事实。)切题。17.A由上两句“那时,人们对电很感兴趣。人们想知道闪电是否真的是由电产生的。”和下三句“他放飞了一个风筝,用一根绳子绑着它。一把金属钥匙系在绳子上。一道闪电击中了风筝,电通过绳子传导到了钥匙上。”可知,富兰克林开展了闪电实验,说明他对电很感兴趣,即他也是对电很感兴趣的人们中的一员。A项(富兰克林就是其中之一。)切题。18.E由上两句“一把金属钥匙系在绳子上。一道闪电击中了风筝,电通过绳子传导到了钥匙上。”和下一句“他说,这证明了闪电是电的一种形式。”可推断出,富兰克林通过自己触电来证明电的存在。E项(富兰克林接着用手指碰了一下钥匙,被电击了。)切题。19.B由上两句“然而,这个故事和实验的细节都不是完全真实的。尽管富兰克林的实验已经被证明发生过,但不止一位科学家质疑到底发生了什么。”可知,此处承接上文,富兰克林的实验虽不是完全真实的,但实验发生过,由此可得出有关绳子和钥匙的细节是真的。B项(关于绳子和钥匙的细节是真的。)切题。20.D由下一句“但是在科学中,事实应该通过实验和研究来证明,我们不应该总是相信我们所读或听到的一切,即使它是一个伟大的故事。”可知,D项(诚然,虚构的事往往比事实更有趣。)切题,空处与下句是转折关系。第二部分第一节【文章大意】本文是一篇记叙文。文章主人公Angela因为癌症失去了一条腿,她变得不像以前那样乐观和自信。Laurie是她的滑雪教练,她同样也失去了一条腿。Laurie通过鼓励Angela练习滑雪让她找到了自信。在这个过程中,Angela不断尝试,不断摔倒,最终获得成功。这篇文章告诉我们,在遭遇困难的时候,一定要继续努力,不要放弃。21.DAngela过去会“飞”。她用脚做翅膀,比任何人跑得都要快。hand手;arm胳膊;body身体;foot脚。故选D。22.D但是现在,她想:“我比任何人都要慢。”根据后句“Shewasthelasttogetofftheschoolbus…”可知,她是最后一个下车的,所以她很慢。stronger更强壮的;weaker更虚弱的;swifter更快的;slower更慢的。故选D。23.ALaurie卷起裤腿,展示了她左腿的假肢。rollup卷起;dressup打扮;puton穿上;relyon依靠。故选A。24.D语境见上一题解析。此处指假肢。powerful有力的;magical有魔力的;universal普遍的;artificial人造的。故选D。25.C如果“我”能学会滑雪,你也可以。“so+助动词/情态动词+主语”表示“……也……”。故选C。26.D她们用支架保持平衡。explore探索;solve解决;replace取代;balance使保持平衡。故选D。27.B由于Angela是第一次学习滑雪,因此她们应该去初学者雪道。advanced高级的,先进的;beginner初学者;longest最长的;fast快速的。故选B。28.A整个早晨,Angela都是爬起来然后摔倒,滑行然后摔倒,转弯然后摔倒。由此可知Angela刚开始学滑雪时经常摔倒。故选A。29.B她感到很失望,也很绝望。sensitive敏感的;hopeless无希望的,绝望的;energet