（精心整理）英语必修四非谓语动词练习题

1.Heraisedhisvoicetomakehimself_____.(hear)2.Myfatherhimselfmadesomecandles____light.(give)3.Thebossmadetheworkers______dayandnight.(work) 答案 八年级地理上册填图题岩土工程勘察试题省略号的作用及举例应急救援安全知识车间5s试题及答案 1.heard2.togive3.working非谓语动词专练（一）　　1.TellMarythatthere'ssomeone_______forheratthedoor.　　A.waiting        B.waited       C.waits        D.towait　　2.Thereisabigdog_______toafenceoutsidethehouse.　　A.tying         B.tied          C.totie          D.ties　　3.The_______waitercameuptousandsaid,"Youarewelcome."　　A.smiling       B.smiled        C.smile       D.tosmile　　4._______theearlytrain,you'llhavetogetupearlyandrushinataxi.　　A.Catching       B.Caught      C.Tocatch      D.Catch　　5.There,inthecorner,satthreegirls,_______.　　A.sew       B.weresewing        C.tosew      D.sewing　　6.Whetheritwilldousharmremains_______.　　A.seen        B.seeing      C.beingseen        D.tobeseen　　7.Whomwouldyouratherhave_______withyou,himorme?　　A.tobegone      B.gone        C.going         D.go　　8.Thepowerstationkeepsthevillages______withelectricity.　　A.supplied       B.tosupply      C.supplying      D.havingsupplied　　9.Thepathintheparklookedbeautiful,_______with_______leaves.　　A.covered;falling   B.covered;fallen   C.covering;falling   D.covering,fallen　　10.Iwon'tgotothepartyevenif_______.　　A.inviting        B.beinginvited       C.invited       D.havinginvited　　11.Allworkispleasant_______whenthehabitofworkingisformed.　　A.done         B.doing         C.todo          D.tobedone　　12.Theman_______inabluejacketatthepartywasadoctor.　　A.puton       B.dressed        C.hadon        D.wore　　13.Peoplearetalkingaboutthenewplay_______intwoweeks.　　A.tobeputon      B.toputon       C.beingputon       D.puton　　14.Theman_______inthechairaskedmeto_______.　　A.seated;seated    B.sitting;sitting    C.seating;seat    D.seated;beseated　　15.Ihappened_______withhimwhenhewashitbyastone.　　A.Iwastalking       B.talking      C.totalk        D.tobetalking　　16.Wearenotsurewhichrestaurant_______tonight.　　A.eatingat         B.foreating       C.toeatat        D.weeat　　17.ThewayDellathoughtof_______enoughmoneywastosellherbeautifulhair.　　A.got            B.tobegot       C.toget         D.get　　18.Aphonecallsenthim_______tothehospital.　　A.hurry         B.hurrying         C.tohurry         D.hurried　　19.Mywork_______,Iwenthome.　　A.hadbeendone       B.done       C.havingdone       D.tobedone　　20.Youcancloseyourumbrella.Therainseems_______.　　A.stopping       B.tostop     C.tohavestopped       D.havingstopped　　21.Irushedthereinataxionly_______thelibrary_______.　　A.finding;closed    B.finding;shut   C.tofind;close   D.tofind;closed　　22.Manythings_______impossibleinthepastarecommontoday.　　A.considering      B.toconsider      C.considered     D.beingconsidered　　23.Hemusthavegoneout.Iheardthenoiseofthedoor_______whenIwasstillinbed.　　A.beinglocked       B.tolock      C.locking       D.havinglocked　　24.Asaboy,hewas_______hardalldaylong.　　A.madetowork    B.tomakeworking   C.madeworking   D.tomakework　　25.The_______lookonhisfacesuggestedthathehadpassedtheexam.　　A.exciting       B.tired        C.tiring       D.excited　　26._______anurse,sheknewhowtotakecareofapatient.　　A.Been        B.Being         C.Tobe         D.Be　　27._______twice,hedidn'twanttotryagain.　　A.Failed      B.Failing      C.Havingfailed       D.Tofail　　28._______bythepoliceagain,thethiefhunghishead.　　A.Beingcaught     B.Caught     C.Havingcaught     D.Tobecaught　　29._______theroad,becareful.　　A.Whilecrossing     B.Whencross     C.Crossed     D.Beingcrossed　　30.Hearingthe_______news,weallfelt_______.　　A.encouraging;encouraging          B.encouraged;encouraged　　C.encouraged;encouraging           D.encouraging;encouraged　　31.Thereseemednothingelsetodobut______adoctor.　　A.tosendfor      B.tocallfor       C.sendfor      D.tocallin　　32._______areply,hedecidedtowriteagain.　　A.Notreceiving  B.Receivingnot  C.Nothavingreceived D.Havingreceivednot　　33.Shewentout,_______herbabybyitself.　　A.left        B.leaving       C.havingleft       D.toleave　　34.Ratherthan_______onacrowdedbus,healwaysprefers_______abicycle.　　A.ride;ride      B.riding;ride       C.ride;toride        D.toride;riding　　35.Thecomputercenter,_______lastyear,isverypopularamongthestudentsinthisschool.　　A.open        B.opening       C.havingopened        D.opened　　36.Thesentenceneeds_______oncemore.　　A.explained       B.explaining      C.beingexplained       D.toexplain　　37.Therewasaterriblenoise_______thesuddenburstoflight.　　A.followed       B.tobefollowed      C.following       D.beingfollowed　　38.I'msorryIforgot_______himaboutit,sohedidn'tcome.　　A.totell       B.telling       C.tobetold        D.havingtold　　39.Themonkeywassoluckythatitjustmissed______.　　A.catching      B.tobecaught       C.beingcaught       D.tocatch　　40._______forthework,hewenttosleepatease.　　A.Wellprepared     B.Preparing     C.Beingprepared     D.Gettingready非谓语动词专练（二）　　1.Doyouknowtheboy____underthebigtree?　　A.lay        B.lain        C.laying         D.lying　　2.______someofficials,Napoleoninspectedhisarmy.　　A.Followed  B.Followedby    C.Beingfollowed   D.Havingbeenfollowedby　　3.Therewasaterriblenoise____thesuddenburstoflight.　　A.followed     B.following     C.tobefollowed     D.beingfollowed　　4.Shepretended____mewhenIpassedby.　　A.nottosee      B.notseeing      C.tonotsee      D.havingnotseen　　5.-Goodmorning.CanIhelpyou?　　-I'dliketohavethispackage____,madam.　　A.beweighed     B.tobeweighed     C.toweigh     D.weighed　　6.Mostoftheartists____tothepartywerefromSouthAfrica.　　A.invited      B.toinvite     C.beinginvited      D.hadbeeninvited　　7.____moreattention,thetreescouldhavegrownbetter.　　A.Given      B.Togive     C.Giving     D.Havinggiven　　8.Shereachedthetopofthehillandstopped____onabigrockbythesideofthepath.　　A.tohaverested       B.resting      C.torest       D.rest　　9.LastsummerItookacourseon____.　　A.howtomakedresses           B.howdressesbemade　　C.howtobemadedresses         D.howdressestobemade　　10.Thissentenceneeds_________.            .　　A.improvement       B.improved        C.improving       D.improved　　11.Thesecretaryworkedlateintothenight,____alongspeechforthepresident.　　A.toprepare      B.preparing      C.prepared      D.waspreparing　　12.IcanhardlyimaginePeter____acrosstheAtlanticOceaninfivedays.　　A.sail      B.tosail      C.sailing      D.tohavesailed　　13.-Thelightintheofficeisstillon.　　-Oh,Iforgot____.　　A.turningitoff     B.turnitoff     C.toturnitoff     D.havingturneditoff　　14.Johnwasmade____thetruckforaweekasapunishment.　　A.towash       B.washing       C.wash       D.tobewashing　　15.LittleJimshouldlove____tothetheatrethisevening.　　A.tobetaken      B.totake      C.beingtaken     D.taking　　16.-Iusuallygotherebytrain.　　-Whynot____byboatforachange.　　A.totrygoing       B.tryingtogo      C.totryandgo      D.trygoing　　17.Iwouldappreciate____backthisafternoon.　　A.youtocall      B.youcall      C.yourcalling      D.you'recalling　　18.There'resomanykindsofrecordersonsalethatIcan'tmakeupmymind____tobuy.　　A.what       B.which       C.how       D.where　　19._____foralongtime,mostofthecropsinthisareadiedfromlackingwater.　　A.Beingnorain                  B.Therewasnorain　　C.Tobenorain                   D.Therebeingnorain　　20."Can'tyouread?"Marysaid____tothenotice.　　A.angrilypointing          B.andpointangrily　　C.angrilypointed          D.andangrilypointing　　21.________moreattention,thetreescouldhavegrownbetter.　　A.Given      B.Togive     C.Giving        D.Havinggiven　　22.I'msorry____solong,IforgottotellyouinadvancewhereIhadputmykey.　　A.tokeepyouwait          B.tokeepyouwaiting　　C.tokeepyouwaited        D.tohavekeptyouwaiting　　23.CharlesBabbageisgenerallyconsidered____thefirstcomputer.　　A.toinvent   B.inventing   C.tohaveinvented   D.havinginvented　　24.-Imustapologizefor____aheadoftime.　　-That'sallright.　　A.lettingyounotknow            B.notlettingyouknow　　C.lettingyouknownot            D.lettingnotyouknow　　25.Ratherthan____onacrowdedbus,healwaysprefers____abicycle.　　A.ride;ride     B.riding;ride      C.ride;toride     D.toride;riding　　26.Themissingboyswerelastseen____neartheriver.　　A.playing       B.tobeplaying       C.play       D.toplay　　27.Thevisitingministerexpressedhissatisfactionwiththetalks,____thathehadenjoyedhisstayhere.　　A.havingadded      B.toadd      C.adding      D.added　　28.Thefirsttextbooks____forteachingEnglishasaforeignlanguagecameoutinthe16thcentury.　　A.havingwritten     B.tobewritten     C.beingwritten    D.written　　29.Pauldoesn'thavetobemade____.Healwaysworkshard.　　A.learn       B.tolearn       C.learned       D.learning　　30.Weagreed____herebutsofarshehasn'tturnedupyet.　　A.havingmet       B.meeting       C.tomeet       D.tohavemet　　31.-Youwerebraveenoughtoraiseobjectionsatthemeeting.　　-Well,nowIregret____that.　　A.todo       B.tobedoing       C.tohavedone      D.havingdone　　32.-I'llbeawayonabusinesstrip.Wouldyoumindlookingaftermycat?　　-Notatall.____.　　A.I'venotime     B.I'drathernot     C.I'lllikeit     D.I'dbehappyto　　33.Theboywantedtoridehisbicycleinthestreet,buthismothertoldhim____.　　A.notto      B.nottodo      C.notdoit      D.donotto　　34.Thepatientwaswarned____oilyfoodaftertheoperation.　　A.toeatnot      B.eatingnot      C.nottoeat      D.noteating　　35.Itiswisetohavesomemoney____foroldage.　　A.putaway       B.keptup       C.givenaway       D.sepup　　36.____inthought,healmostranintothecarinfrontofhim.　　A.Losing        B.Havinglose        C.Lost       D.Tolose　　37.Sheisupstairs_______letters.　　A.writes        B.iswriting      C.write          D.writing　　38.Thespeakerraisedhisvoicebutstillcouldn'tmakehimself_______.　　A.hear         B.tohear          C.hearing         D.heard　　39.-Alice,whydidn'tyoucomeyesterday?　　-I____,butIhadanunexpectedvisitor.　　A.had         B.would        C.wasgoingto        D.did　　40.Thenextmorningshefoundtheman_______inbed,dead.　　A.lying           B.lie            C.lay           D.laying　　41.Thesalesmanscoldedthegirlcaught_______andletheroff.　　A.tohavestolen     B.tobestealing     C.tosteal     D.stealing　　42.OnSaturdayafternoon,Mr.Greenwenttothemarket,________somebananasandvisitedhercousin.　　A.bought          B.buying          C.tobuy           D.buy　　43.Shesetoutsoonafterdark_______homeanhourlater.　　A.arriving       B.toarrive      C.havingarrived      D.andarrived　　44.Thoughhehadoftenmadehislittlesister______,todayhewasmadebyhislittlesister.　　A.cry;tocry      B.crying;crying      C.cry;cry        D.tocry;cry　　45.Janewasmade________thetruckforaweekasapunishment.　　A.towash       B.washing       C.wash       D.tobewashing　　46.Theyknewherverywell.Theyhadseenher_______upfromchildhood.　　A.grow        B.grew        C.wasgrowing         D.togrow　　47.Theywouldnotallowhim______acrosstheenemyline.　　A.toriskgoing     B.riskingtogo    C.forrisktogo    D.riskgoing　　48.Mrs.Smithwarnedherdaughter_______afterdrinking.　　A.nevertodrive     B.toneverdrive     C.neverdriving     D.neverdrive　　49.Thechairlooksratherhard,butinfact,itisverycomfortableto_______.　　A.sit          B.siton         C.besat          D.besaton　　50.Tomkeptquietabouttheaccident______losehisjob.　　A.sonotasto     B.soasnotto C.soastonot D.notsoasto非谓语动词专练（三）　　1.＿＿＿＿＿Sunday,thestudentsareathome.　　A.Being  B.Tobe  C.Itis  D.Itbeing　　2.Theboylayonhisback,histeeth＿＿andhisglaringeyes＿＿＿.　　A.set；looked  B.set；looking  C.setting；lookedD.setting；looking　　3.Allthething＿＿＿＿，hisproposalisofgreatervaluethanyours.　　A.considered  B.considering  C.toconsider  D.consider　　4.＿＿＿＿whoshewas,shesaidshewasMr.Johnson'sfriend.　　A.Asking  B.Asked  C.Tobeasked  D.Whenasking　　5.Hehurriedtothestation,＿＿＿the9：30trainhadalreadyleft.　　A.tofind  B.found  C.onlytofind  D.onlyfinding　　6.Whichdoyouenjoy＿＿＿yourweekends,fishingorwatchingTV?　　A.spending  B.tospend  C.beingspent  D.spend　　7.＿＿＿allmyletters,Ihadadrinkandwentout.　　A.Finished  B.Havingfinished  C.Finishing  D.Tofinish　　8.Shehadnomoney＿＿＿abirthdaypresentforherchildren.　　A.tobuywith  B.buying  C.bought  D.withwhichtobuy　　9.Fromthedates＿＿＿onthegoldcoin,itisconformedthatitwasmadefivehundredyearsago.　　A.marking  B.marked  C.tobemarked  D.havingbeenmarked　　10.＿＿＿＿timeandlabour,cartoonistsgenerallydrawthehandsoftheircharacterswithonly3fingersandathumb.　　A.Tosave  B.Saved  C.Saving  D.Havingsaved　　11.O'Nealworkshard.Heisoftenseen＿＿＿heavilybeforehisteammatesstart.　　A.sweated  B.tobesweated  C.sweating  D.beingsweated　　12.IcanhardlyimaginePeter＿＿＿acrosstheAtlanticOceanin15days.　　A.sail  B.tosail  C.sailing  D.tohavesailed　　13.Such＿＿＿thecase,Icouldn'thelpbut＿＿＿＿＿him.　　A.being；support  B.is；tosupport  C.hasbeen；supporting  D.be；supported　　14.Doesthewayyouthoughtof＿＿＿thewatercleanmakeanysense?　　A.making  B.tomake  C.howtomake  D.havingmade　　15.Inordernottobedisturbed,Ispentthreehours＿＿inmystudy.　　A.locking  B.locked  C.tolock  D.beinglocked　　16.Youwillfindtheword"psychology"＿＿＿＿under"P"inyourdictionary.　　A.havelisted  B.list  C.listed  D.listing　　17.Sandycoulddonothingbut＿＿＿tohismotherthathewaswrong.　　A.admitting  B.admits  C.admit  D.toadmit　　18.WhenIcaughthimcheatingme,Istopped＿＿thingsinhisshop.　　A.buying  B.buy  C.tobuy  D.bought　　19.Adoctorcanexpect＿＿＿atanyhourofthedayornight.　　A.calling  B.tocall  C.beingcalled  D.tobecalled　　20.NearlyeverygreatbuildinginBeijingwasbuilt＿＿＿south.　　A.toface  B.facing  C.tohavefaced  D.beingfacing　　21.Withhisson＿＿＿,theoldmanfeltunhappy.　　A.tobedisappointed  B.disappointing C.beingdisappointed  D.todisappoint　　22.Itwas＿＿＿＿computergamesthatcosttheboyalotoftimethatheoughttohavespentonhislessons.　　A.tohaveplayed  B.playing  C.played  D.havingplayed　　23.Andthere,almost＿＿＿inthebigchair,satherlittlebrother,whoneverhadtobetoldtokeepquiet.　　A.havinglost  B.losing  C.tobelost  D.lost　　24.AsIwillbeawayforatleastayear,I'dappreciate＿＿＿fromyounowandthen＿＿mehoweveryoneisgettingalong.　　A.hearing；tell     B.tohear；tell　　C.hearing；telling  D.tohear；totell　　25.Thestudentsareforbidden,unlesstheyhavespecialpasses,＿＿after11pm.　　A.tostayout  B.fromstayingout　　C.stayingout  D.nottostayout　　26.IworkedsolateintheofficelastnightthatIhardlyhadtime＿＿thelastbus.　　A.catching  B.tocatch  C.havingcaught  D.tohavecaught　　27.＿＿tosunlightfortoomuchtimewilldoharmtoone'sskin.　　A.Exposed  B.Havingexposed  C.Beingexposed  D.Afterbeingexposed　　28.Mikedidn'tstart＿＿＿＿theimportanceofaforeignlanguagetillhegraduatedfromschool.　　A.knowing  B.toknow  C.know  D.tohaveknown　　29.--Whywasaspecialmeetingcalled?　　--＿＿＿anewchairman.　　A.Toelect   B.Electing   C.Ourelecting   D.Elected　　30.--WhydidBobweep?　　--Hecouldn'tbear＿＿＿likethatbeforethewholeclass.　　A.makingfunof     B.beingmadefunof  C.tobelaughedat  D.beingmadefun　　31.Thestudentsexpectedthere＿＿morereviewingclassesbeforethefinalexams.　　A.is   B.tobe   C.being  D.havebeen　　32.Idon'tmind＿＿＿bybus,butIhate＿＿inqueues.　　A.traveling；stand          B.totravel；tostand　　C.traveling；tostand       D.traveling；tostanding　　33.Wearelookingforwardto＿＿＿thefilm＿＿＿＿attheGrandCinema.　　A.seeing；toshow  B.see;shown  C.seeing；shown   D.see；toshow　　34.Attheshopping-centre,hedidn'tknowwhat＿＿and＿＿withanemptybag.　　A.tobuy；leave  B.tobebought；left　　C.tobuy；left   D.wastobuy；leave　　35.Thepolicemanputdownthephone,＿＿＿withasmileonhisface.　　A.satisfied  B.satisfying  C.tobesatisfied  D.havingsatisfied　　36.＿＿＿,yourcompositionisfullofmistakes.　　A.Writingcarelessly         B.Writtencarelessly　　C.Havingwrittencarelessly  D.Beingwrittencarelessly　　37.Shemadeacandle＿＿＿uslight.　　A.give   B.gave   C.togive   D.given　　38.--Whatdoyousupposemadeherworried?　　--＿＿＿agoldring.　　A.Lose  B.Lost  C.Losing  D.Becauseoflosing　　39.Iknowit'snotimportant,butIcan'thelp＿＿aboutit.　　A.tothink  B.andthink  C.thinking  D.beingthought　　40.＿＿severaltimes,theyoungscientiststillkeptonmakinghisexperiments.　　A.Havingbeenfailed   B.Havingfailed　　C.Thoughfailed        D.Becauseoffailure　　41.＿＿＿alloverthehillandaroundthelakearewildflowersofdifferentkinds.　　A.Togrow  B.Growing  C.Grown  D.Grow　　42.--Whoareyougoingtohave＿＿thisletterforyou?　　--Mysecretary.　　A.type  B.typed   C.beentyped  D.beentyping　　43.Thefood＿＿＿atthemomentisforthedinnerparty.　　A.cooked  B.tobecooked  C.isbeingcooked  D.beingcooked　　44.Akindoldgentlemanoffered＿＿＿mybagstothetaxistand.　　A.hishelpcarried   B.carrying　　C.metocarry        D.tohelpmetocarry　　45.Youcanhardlyimaginethedifficultythewomanhad＿＿＿herchildren.　　A.broughtup  B.tobringup  C.bringingup  D.tohavebroughtup　　46.Hewas＿＿＿today,butwasaskedtostayfor＿＿＿week.　　A.tohavereturned；another   B.returning；onemore　　C.returned；another           D.toreturn；other　　47.--WhereshouldIsendmyform?　　--ThePersonnelofficeistheplace＿＿＿.　　A.forsendingit   B.tosenditto  C.tosend   D.tosendit　　48.Icouldfeelthewind＿＿onmyfacefromanopenwindow.　　A.toblow   B.blowing   C.tobeblowing   D.blown　　49.--Lucy,whydidn'tyoucomelastSunday?　　--I＿＿＿,butmyfatherwasinhospital.　　A.would   B.had   C.wasgoingto   D.did　　50.--Whatterribleweather!Isimplycan'tgetthecar＿＿＿.　　--Whynottry＿＿＿＿theenginewithsomehotwater?　　A.starting；filling   B.start；filling　　C.started；tofill    D.tostart；fill非谓语动词专练（四）　　1. There______noclassesyesterday,wepaidavisittotheGreatWall.　　A.was     B.being     C.were   D.hadbeen　　2. Thepolicemanrushedintotheroomonly______anoldladylyingontheground.　　A.found          B.find      C.finding    D.tofind　　3.Theboylayontheground,hiseyes______andhishands______.　　A.closing;trembling    B.closed;trembling　　C.closed;trembled      D.closing;trembled　　4.Eachofthemgotupearly______tocatchtheearlybus.　　A.tohope    B.hoping       C.sothat    D.and　　5.HowpleasedtheEmperorwas______whatthecheatssaid!　　A.hearing    B.heard        C.hear    D.tohear　　6.Weshouldpreventpollution______happily.　　A.fromliving   B.living  C.toliving   D.tolive　　7.Iambusynow,soIcan'thelp______themachine.　　A.repair      B.tohaverepaired  C.repairing       D.fixing　　8.Janecameveryclose______agoldmedalforBritainintheOlympics.　　A.towin     B.winning    C.towinning D.tobewon　　9.Theboyseatedhimselfinthecornerwithhisback______tohisfather.　　A.turning     B.toturn     C.tobeturned  D.turned　　10.----Bytheway,whendidyougetyourbedroom______? ----Lastweek.　　A.topaint     B.painted  C.painting   D.tobepainted　　11.Helikes______,buthedoesn'tlike______todaybecauseitistoocold.　　A.toswim;toswim      B.swimming;swimming　　C.toswim;swimming    D.swimming;toswim　　12.Thenovelissaid______intomanylanguages.　　A.totranslate           B.beingtranslated　　C.tohavebeentranslated      D.havingbeentranslated　　13.I'mexaminingthecompositionhehasjustfinished______thepossiblemistakesinit.　　A.correcting    B.tocorrect    C.corrected  D.correct　　14.Theywouldnotallowhim______acrosstheenemyline.　　A.toriskgoing    B.riskingtogo   C.forrisktogo    D.riskgoing　　15. Hespentasmuchtimeashecould_____thechild.　　A.teaching      B.toteach   C.teach      D.forteaching　　16.______theroom,aletterwaslaidontheground.　　A.Entering   B.Havingentered   C.Heentered D.MrsGreenentering　　17.Theysetout______forthe______boy.　　A.searching;losing B.searching;lost C.tosearch;lostD.tosearch;missed　　18.______hermotherhadcome,herfacelitup.　　A.Hearing  B.Havingheard  C.WhenhearingD.Whensheheard　　19.Theyarrivedattheiruniversityverylate,______thegatecloselyshut.　　A.found   B.tofind    C.find   D.finding　　20.----Doyouhaveanythingmore______,sir?　　----No.Youcanhavearestordosomethingelse.　　A.typing     B.tobetyped    C.typed    D.totype　　21.Themanagerpromisedtokeepme______ofhowourbusinesswasgoingon.　　A.tobeinformed B.oninforming    C.informed       D.informing　　22.Withalotofdifficultproblems______,themanagerfeltworriedallthetime.　　A.tosettle       B.settling    C.settled     D.beingsettled　　23.Willthose______thechildrenfromabroadcometotheheadmaster'soffice?　　A.teaching       B.teach    C.whoteaches   D.whoteaching　　24.After______forthejob,youwillberequiredtotakealanguagetest.　　A.beinginterviewed  B.interviewed C.interviewing D.havinginterviewed　　25.Theyapologizedfor______toattendthemeeting.　　A.theirnotbeingable  B.theirbeingnotable　　C.themnotable      D.thembeingablenot　　26.______tonuclearradiation,evenforashorttime,mayproducevariants(变异体)ofgenesinhumanbodies.　　A.Beingexposed   B.Havingexposed　　C.Exposed       D.Afterbeingexposed　　27.Chinabecamethe143rdmemberoftheWorldTradeOrganizationonDecember11,2001,thus______its15-year