高二下学期期末考前测试英语试题Word格式.docx
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高二下学期期末考前测试英语试题Word格式.docx
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ResearchersinSpainandEnglandrecentlyfoundthatthewormsofthegreaterwaxmothcanbreakdownpolyethylene,whichaccountsfor40%ofplastics.Theteamleft100waxwormsonacommercialpolyethyleneshoppingbagfor12hours,andthewormsconsumedandbrokedownabout92milligrams,oralmost3%ofit.Toconfirmthattheworms’chewingalonewasnotresponsibleforthepolyethylenebreakdown,theresearchersmadesomewormsintopaste(糊状物)andappliedittoplasticfilms.14hourslaterthefilmshadlost13%oftheirmass--apparentlybrokendownbyenzymes(酶)fromtheworms’stomachs.TheirfindingswerepublishedinCurrentBiologyin2017.
FedericaBertocchini,co-authorofthestudy,saystheworms’abilitytobreakdowntheireverydayfood--beeswax--alsoallowsthemtobreakdownplastic."
Waxisacomplexmixture,butthebasicbondinpolyethylene,thecarbon-carbonbond,isthereaswell,"
sheexplains."
Thewaxwormevolvedamethodorsystemtobreakthisbond."
JenniferDebruyn,amicrobiologistattheUniversityofTennessee,whowasnotinvolvedinthestudy,saysitisnotsurprisingthatsuchwormscanbreakdownpolyethylene.Butcomparedwithpreviousstudies,shefindsthespeedofbreakingdowninthisoneexciting.Thenextstep,DeBruynsays,willbetoidentifythecauseofthebreakdown.Isitanenzymeproducedby
thewormitselforbyitsgutmicrobes(肠道微生物)?
Bertocchiniagreesandhopesherteam
’sfindingsmightonedayhelpemploytheenzymetobreakdownplasticsinlandfills.Butsheexpectsusingthechemicalinsomekindofindustrialprocess-notsimply"
millionsofwormsthrownontopoftheplastic.”
21.Whatcanwelearnaboutthewormsinthestudy?
A.Theytakeplasticsastheireverydayfood.
B.Theyarenewlyevolvedcreatures.
C.Theycanconsumeplastics.
D.Theywindupinlandfills.
22.AccordingtoJenniferDeBruyn,thenextstepofthestudyisto____.
A.identifyothermeansofthebreakdown
B.findoutthesourceoftheenzyme
C.confirmtheresearchfindings
D.increasethebreakdownspeed
23.Itcanbeinferredfromthelastparagraphthatthechemicalmight.
A.helptoraiseworms
B.helpmakeplasticbags
C.beusedtocleantheoceans
D.beproducedinfactoriesinfuture
24.Whatisthemainpurposeofthepassage?
A.Toexplainastudymethodonworms.
B.Tointroducethedietofaspecialworm.
C.Topresentawaytobreakdownplastics.
D.Toproposenewmeanstokeepeco-balance.
B
WhilefamousforeignarchitectsareinvitedtoleadthedesignsoflandmarkbuildingsinChinasuchasthenewCCTVtowerandtheNationalCenterforthePerformingArts,manyexcellentChinesearchitectsaremakinggreateffortstotakethecenterstage.
Theireffortshavebeenprovenfruitful.WangShu,a49-year-oldChinesearchitect,wonthe2012PritzkerArchitecturePrize—whichisoftenreferredtoastheNobelPrizeinarchitecture—onFebruary28.HeisthefirstChinesecitizentowinthisaward.
WangservesasheadoftheArchitectureDepartmentattheChinaAcademyofArt(CAA).HisofficeislocatedattheXiangshancampus(校园)oftheuniversityinHangzhou,ZhejiangProvince.Manybuildingsonthecampusarehisoriginalcreations.
ThestyleofthecampusisquitedifferentfromthatofmostChineseuniversities.Manyvisitorswereamazedbythecomplexarchitecturalspaceandabundantbuildingtypes.Thecurves(曲线)ofthebuildingsperfectlymatchtheriseandfallofhills,formingauniqueview.
Wangcollectedmorethan7millionabandonedbricksofdifferentages.Heaskedtheworkerstousetraditionaltechniquestomakethebricksintowalls,roofsandcorridors.ThiscreationattractedalotofattentionthankstoitsmixtureofmodernandtraditionalChineseelements(元素).
Wang’sworksshowadeepunderstandingofmodernarchitectureandagoodknowledgeoftraditions.Throughsuchabalance,hehadcreatedanewtypeofChinesearchitecture,saidTadaoAndo,thewinnerofthe1995PritzkerPrize.
Wangbelievestraditionsshouldnotbesealedinglassboxesatmuseums."
Thatisonlyevidencethattraditionsonceexisted,"
hesaid.
"
ManyChinesepeoplehaveamisunderstandingoftraditions.Theythinktraditionmeansoldthingsfromthepast.Infact,traditionalsoreferstothethingsthathavebeendevelopingandthatarestillbeingcreated,"
hesaid.
"
Today,manyChinesepeoplearelearningWesternstylesandtheoriesratherthanfocusingonChinesetraditions.Manypeopletendtotalkabouttraditionswithoutknowingwhattheyreallyare,"
saidWang.
Thestudyoftraditionsshouldbecombinedwithpractice.Otherwise,therecreationoftraditionswouldbeartificialandempty,hesaid.
25.Wang’swinningoftheprizemeansthatChinesearchitectsare___________.
A.followingthelatestworldtrend
B.gettinginternationalrecognition
C.workingharderthaneverbefore
D.relyingonforeignarchitects
26.WhatmadeWang’sarchitecturaldesignasuccess?
A.Themixtureofd
ifferentshapes.
B.ThebalanceofEastandWest.
C.Theuseofpopulartechniques.
D.Theharmonyofoldandnew.
27.WhatshouldwedoaboutChinesetraditionsaccordingtoWang?
A.Spreadthemtotheworld.
B.Preservethematmuseums.
C.Teachtheminuniversities.
D.Recreatetheminpractice.
C
Languageshavebeencomingandgo
ingforthousandsofyears,butinrecenttimestherehasbeenlesscomingandalotmoregoing.Whentheworldwasstillpopulatedbyhunter-gatherers,small,tightlyknit(联系)groupsdevelopedtheirownpatternsofspeechindependentofeachother.Somelanguageexpertsbelievethat10,000yearsago,whentheworldhadjustfivetotenmillionpeople,theyspokeperhaps12,000languagesbetweenthem.
Soonafterwards,manyofthosepeoplestartedsettlingdowntobecomefarmers,andtheirlanguagestoobecamemoresettledandfewerinnumber.Inrecentcenturies,trade,industrialisation,thedevelopmentofthenation-stateandthespreadofuniversalcompulsoryeducation,especiallyglobalisationandbettercommunicationsinthepastfewdecades,allhavecausedmanylanguagestodisappear,anddominantlanguagessuchasEnglish,SpanishandChineseareincreasinglytakingover.
Atpresent,theworl
dhasabout6,800languages.Thedistributionoftheselanguagesishugelyuneven.Thegeneralruleisthatmildzoneshaverelativelyfewlanguages,oftenspokenbymanypeople,whilehot,wetzoneshavelots,oftenspokenbysmallnumbers.Europehasonlyaround200languages;
theAmericasabout1,000;
Africa2,400;
andAsiaandthePacificperhaps3,200,ofwhichPapuaNewGuineaal
oneaccountsforwellover800.Themediannumber(中位数)ofspeakersismere6,000,whichmeansthathalftheworld'
slanguagesarespokenbyfewerpeoplethanthat.
Alreadywellover400ofthetotalof6,800languagesareclosetoextinction(消亡),withonlyafewelderlyspeakersleft.Pick,atrandom,BusuuinCameroon(eightremainingspeakers),ChiapanecoinMexico(150),LipanApacheintheUnitedStates(twoorthree)orWadjiguinAustralia(one,withaquestion-mark):
noneoftheseseemstohavemuchchanceofsurvival.
28.Whatcanweinferaboutlanguagesinhunter-gatherertimes?
A.Theydevelopedveryfast.
B.Theywerelargeinnumber.
C.Theyhadsimilar
patterns.
D.Theywerecloselyconnected.
29.Whichofthefollowingbestexplains"
dominant"
underlinedinparagraph2?
A.complex.B.advanced.C.powerful.D.modern.
30.Whatisthemainideaofthetext?
A.Newlanguageswillbecreated.
B.People'
slifestylesarereflectedinlanguages.
C.Humandevelopmentresultsinfewerlanguages.
D.Geographydetermineslanguageevolution.
第二节(共5小题;
每小题2分,满分10分)
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
选项中有两项为多余选项。
Everyanimalsleeps,butthereasonforthishasremainedfoggy.Whenlabratsarenotallowedtosleep,theydiewithinamonth.31
Oneideaisthatsleeph
elpsusstrengthennewmemories.32Weknowthat,whileawake,freshmemoriesarerecordedbyreinforcing(加强)connectionsbetweenbraincells,butthememoryprocessesthattakeplacewhilewesleephavebeenunclear.
Supportisgrowingforatheorythatsleepevolvedsothatconnectionsbetweenneurons(神经元)inthebraincanbeweakenedovernight,makingroomforfreshmemoriestoformthenextday.33
Nowwehavethemostdirectevidenceyetthatheisright.34.Thesynapsesinthemicetakenattheendofaperiodofsleepwere18percentsmallerthanthosetakenbeforesleep,showingthattheconnectionsbetweenneuronsweakenwhilesleeping.
IfTononi’stheoryisright,itwouldexplainwhy,whenwemissanight`ssleep,wefinditharderthenextdaytoconcentrateandlearnnewinformation—ourbrainsmayhavesmallerroomfornewexperiences.
Theirresearchalsosuggestshowwemaybuildlastingmemoriesovertimeeventhoughthesynapsesbecomethinner.Theteamdiscoveredthatsomesynapsesseemtobeprotectedandstayedthesamesize.35“Youkeepwhatmatters,”Tononisays.
A.Weshouldalsotrytosleepwellthenightbefore.
B.It’sasifthebrainispreservingitsmostimportantmemories.
C.Similarly,whenpeoplegoforafewdayswithoutsleeping,theygetsick.
D.Theprocessestakeplacetostopourbrainsbecomingloadedwithmemories.
E.That’swhystudentsdobetterintestsiftheygetachancetosleepafterlearning.
F
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