2025年安徽涉外经济职业学院高职单招高职单招英语2016-2024历年频考点试题含答案解析

2025年安徽涉外经济职业学院高职单招高职单招英语2016-2024历年频考点试题含答案解析（图片大小可自由调整）一、单选题(共50题)1、Hesaidthathewouldpasstheexamandthis________tobetrue.

(1分)A、turnedoutB、putoutC、brokeoutD、triedout正确答案选项：参考答案：A解析句意：他说他会通过考试，结果果真如此。考查动词短语辨析。turnedout结果是；putout扑灭；brokeout爆发；triedout试验。根据“Hesaidthathewouldpasstheexamandthis…tobetrue.”可知，此处强调结果，故选A。2、—Iwillgotothecountrysidetoseemygrandmotherthisafternoon,soIcan'tgoswimmingwithyou.—（）(1分)A、It'smypleasureB、YouarewelcomeC、That'sapityD、Sure,Iam正确答案选项：参考答案：C解析考查情景交际。句意为：“——今天下午我要去乡下看望我的奶奶，所以我不能和你一起去游泳。—真遗憾。”It'smypleasure意为“别客气”;Youarewelcome意为“不客气”;That'sapity意为“真遗憾”;Sure,Iam意为“当然，我是”。根据“Ican'tgoswimmingwithyou”可知，对于他人不能和自己一起去游泳应该是感到遗憾。故选C。3、Iusuallygotoschool________bike,butsometimesIgotoschool________foot.

(1分)A、with；onB、on；byC、on；withD、by；on正确答案选项：参考答案：D解析bybike：骑车；onfoot：步行4、Nobody________goingtopickcorninthefield．

(1分)A、isB、areC、willD、does正确答案选项：参考答案：A解析没有人会在地里摘玉米。“nobody”是单数形式，所以用is5、从下列选项中找出其括号部分与所给单词括号部分读音相同的选项。（）cl(ear)(1分)A、n(ear)B、l(ear)nC、h(ear)tD、w(ear)正确答案选项：参考答案：A解析clear[klɪə(r)]A.near[nɪə(r)]B.learn[lɜːn]C.heart[hɑːt]D.wear[weə(r)]故选A.6、I（）youcanfinishtheexamintwohours,(1分)A、doesbelieveB、dobelieveC、didbelievedD、dobelieved正确答案选项：参考答案：B解析考查强调句。句意为：“我确实相信你能在两个小时内完成考试。”强调谓语时，可以用“助动词do/does/did+动词原形”。本句为一般现在时，且主语为I,所以应用“do+动词原形”。故选B。7、Tianiinis（）attractiveandbeautifulcityon（）coastoftheBohaiSea.(1分)A、an;theB、an;/C、a:theD、a;a正确答案选项：参考答案：A解析考查冠词。句意为：“天津是位于渤海海岸的一个吸引人又漂亮的城市。”attractive为元音音素开头，且表泛指，所以第一空要用不定冠词an;第二空在渤海海岸线上特指了渤海，要用定冠词the。故选A。8、---Welldone,Tom!---Thanks.Butgivenmoretime,I________itbetter.

(1分)A、shouldn’thavedoneB、couldhavedoneC、mightnotdoD、coulddo正确答案选项：参考答案：B解析考查情态动词及虚拟语气。shouldn’thavedone本不应该做某事，而实际上做了，couldhavedone本可能做某事而实际上没有做，句意：汤姆，做的好！谢谢，但是如果给我更多时间的话，我本可以做的更好一些。故选B。9、

_____bytheadvancesintechnology,manyfarmershavesetupwindfarmsontheirland.(1分)A、BeingencouragedB、EncouragingC、EncouragedD、Havingencouraged正确答案选项：参考答案：C解析考查非谓语动词过去分词作原因状语的用法。分析句子可以看出，这是一个省略的原因状语从句，前后主语都是manyfarmers，由bytheadvancesintechnology，可知许多农民受到鼓舞，选C符合。10、—IsthereanythingIcandoforyou,sir?—________.I’mbeingserved

(1分)A、Oh,youareanicegirlB、ThankyouallthesameC、You’rewelcomeD、That’sallright正确答案选项：参考答案：B解析考查交际用语。根据回答可知，有别人正在为我服务，所以现在我不需要你的服务了，但是无论如何还是要表示感谢，故选B。11、Shetookhersoninherarmsandlookedathim（）(1分)A、happyB、happilyC、happinessD、unhappy正确答案选项：参考答案：B解析考查副词。句意为：“她将她的儿子抱在怀里，开心地看着他。”happily为副词，意为“开心地”,修饰动词词组lookat。故选B。12、材料Itwasgettingdarkandsnowwascomingdown.Joewasdrivinghome.He'dbeenunemployedsincethefactory(1).Mostofhisfriendshadleft,buthestayedon.（2）,hewasbornhere.

Suddenlyhesawaladystandingonthesideoftheroadand（3）.Shewasworried.Noonehadstoppedto（4）forthelasthour.Joeknew（5）shefeltandsaid,“MynameisJoeandI'mheretohelpyou.”Allshehadwasaflattyre,（6）foranoldlady,thatwasbadenough.Joechangedthe（7）,buthegotdirtyandhishandshurt.ShewantedtopayJoeandsaidany（8）wouldhavebeenallright.Joeneverthoughttwiceaboutthemoneyandthereweremanypeoplewhohad（9）himahandinthepast.Hehadlivedhislifethatway.Hetoldherthatifshereallywantedtopayhim（10）,thenexttimeifshesawsomeonewhoneededhelp,shecouldgivethatpersontheassistancethathe（11）,

Latertheladywentina（12）decoratedrestauranttoeatinahurry.Thecashierwaslikethetelephoneofanout-of-workactor—itdidn't（13）much.However,thewaitress,whowasnearlyeightmonthspregnant(怀孕的),broughtacleantoweltoherwitha（14）smile.Theoldlady（15）Joe.Afterthewaitressbroughtthechangefroma100-dollarbill,shefoundthelady（16）andsomethingwrittenonanapkin,“（17）oncehelpedmeout,thewayI'mhelpingyou.（18）youreallywanttopayhimback,don'tletthechainoflove（19）withyou.”

That（20）thewaitressgavehersleepinghusbandasoftkissandwhispered,“Everything'sgoingtobeallright,Joe.”第17空填（）。(1分)A、AnyoneB、EveryoneC、SomeoneD、Anybody正确答案选项：参考答案：C解析考查不定代词词义辨析。anyone意为“任何人”;everyone意为“每个人”;someone意为“某个人”;anybody意为“任何人”。此处指某个人曾经帮助过老太太。故选C。13、Everycollegestudentshouldlearntotakecare_______yourselfsinceyouareadults.

(1分)A、forB、atC、ofD、in正确答案选项：参考答案：C解析考固定搭配，takecareof的意思是照顾。本句话意思是，每个大学生都应该照顾好自己，因为你是成年人。14、Theboyburstintotears________hesawhismother.

(1分)A、atthemomentB、inamomentC、foramomentD、themoment正确答案选项：参考答案：D解析考查连词短语。句意：这个男孩一看见妈妈就突然哭起来了。句中themoment为连词短语，表示一……就……，其它短语只可作状语，Aatthemoment此刻，Binamoment一会儿，Cforamoment有一会，都不能做连词，故选D。考点：考查连词短语15、—Rememberthefirsttimewemet,Jack?—OfcourseIdo.You______inthelibrary.

(1分)A、havereadB、readC、hadreadD、werereading正确答案选项：参考答案：D解析考查时态。句意：——记得我们第一次见面吗，杰克？——当然。你正在图书馆看书。第一次遇见时正在做的事情，是过去正在进行的动作，用过去进行时。A是现在进行时，表现在正在进行；B是过去完成时，表过去之过去；C是现在完成时，表过去的动作对现在产生的影响。故选D。16、--____isyouryoungersister?--Sheis16yearsold.

(1分)A、HowmuchB、HowmanyC、HowsoonD、Howold正确答案选项：参考答案：D解析-你的妹妹几岁了？-她16岁了。Howold多少岁，故选D17、-CanyoucomeandseemeonSunday,Daddy?-Oh,daring,_____I’mafraidthatI’malreadygoingonabusinesstrip.

(1分)A、whatapity!B、whynot?C、comeon!D、sowhat?正确答案选项：参考答案：A解析考查交际用语。Awhatapity!真遗憾啊！Bwhynot?为什么不呢？Ccomeon!加油！得了吧！Dsowhat?那又怎么样。句意：-爸爸，你能在星期天来看我吗？-亲爱的，真遗憾啊！那时我已经去出差了。选择A项说明不能来看孩子的遗憾之情。18、---WouldyouliketocometothedinnerpartyhereonSaturday?---Thankyou.I'dloveto,（）I'llbeoutoftownattheweekend.(1分)A、becauseB、andC、soD、but正确答案选项：参考答案：D解析【解析】试题分析：句意：--请你在周六来参加聚会好吗?—谢谢，我愿意去但是我在周末将出门。A.because因为；B.and和，表并列；C.so因此，表示前因后果；D.but表示转折。第二句的前面说愿意去，后面又说不能去，所以前后是转折关系，故选D。考点：考查连词的用法。19、材料Beingjoblessforthelastthreemonths,Iamupsetnowadays.Mysonhaslosthis（1）fromagoodschoolandhemighthavetogotoalessqualifiedschool.Ihavemovedfromaspacious(宽敞的)apartmenttoasmalloneinorderto（2）mylivingexpenses.Mywifehasbuiltextrastress.Ontopofthat,myfather-in-law（3）aweekago,whichhasaddedfueltofire,（4）ourfamilyintoamoreterriblestate.

InthesecircumstancesIhavetwomental（5）:eithertofeelupsetandkeeplosingmypeaceofmind,or（6）mynegativethoughtswithsupermentalpowersaboutself-confidenceandconsistency,and（7）applyingfornewjobswithpositiveattitude.

IchoosethesecondoptionbecauseIbelievethatthepainIam（8）todaywillbuildupmy（9）.Mystrengthswillthenincreasemyconfidenceandmakemeagoodtimes,makemea（10）manoneday.Iunderstandthatgoodandbadstagesarepartof（11）.Whilegoodtimesmakemehappy,badtimes（12）the“inner”me.

Twomonthslater,（13）,Ihavefinallylandedonajobwhichisveryexcitingandoffersanicesalary.Timehashealedmywife'smentalstress（14）thedeathofherfather.Mysonhasalreadybeenacceptedbyanothergoodschoolbecausetheadmissionsfornewacademicyearwerestill（15）!

AsIambackonthetrackofnormallife,Ican（16）saythatthemostimportantthingsthathelpedme（17）thecrisisweremyconsistentcharacterofpatience,and（18）attitudetowardslife.So,whileIwishyouallthebestlifecan（19）you,Iwouldhighlyrecom-mendtakingthesameattitudetowardslife（20）youaretrappedinanyofsuchsituations.第15空填（）。(1分)A、occupiedB、emptyC、openD、closed正确答案选项：参考答案：C解析考查形容词词义辨析。occupied意为“被占领的”;empty意为“空的”;open意为“开放的”;closed意为“关闭的”。此处指作者的儿子被另外一所好的学校录取了，因为新学年的录取依然有效。故选C。20、Hefoundhismobilephone___________.

(1分)A、stealB、beingstealingC、stolenD、tosteal正确答案选项：参考答案：C解析他发现他的手机被偷了。steal的完成时是stolen，发现手机已经被偷走了要用完成时。21、Whatapitymynewcomputerdoesn'twork.（）mustbesomethingwrongwithit.(1分)A、ItB、ThereC、ThisD、That正确答案选项：参考答案：B22、从下面单词中找一个括号部分读音不同的单词。（）(1分)A、sh(are)B、h(ear)dC、h(air)D、b(ear)正确答案选项：参考答案：B23、Thechildrenarenotstudying,they________lunch．

(1分)A、areeatingB、eatC、haveD、take正确答案选项：参考答案：A解析[核心短语/词汇]eatlunch:吃午饭。孩子们不是正在学习,他们正在吃午饭。选项A:正在吃(现在进行时);选项B:吃(一般现在时);选项C:吃/喝(-般现在时);选项D:拿走(一般现在时)。根据前面的arenotstudying(不是正在学习)可以看出是现在进行时,后面在意思上表示对比:不是正在.而是正在做....所以也用现在进行时:am/is/are+现在分词,主语they是复数,所以用are+doing。故答案为A。24、---Howisherconditionnow?---Ithasimproved（）.(1分)A、greatlyB、betterC、soD、much正确答案选项：参考答案：A25、Mr.Smithisconsidering______acomputer,whichisconsidered______agreathelpinhisworkandstudy.

(1分)A、tobuy;tobeB、buying;tobeC、tobuy;beingD、buying;being正确答案选项：参考答案：B解析Smith考虑买一台电脑，这被认为对他工作学习是很大的帮助。答案一定是B。considerdoingsth是考虑做某事；Example:Ourcompanyisconsideringexpandingtrade.公司正考虑扩大业务。beconsideredtobe是固定搭配，意思是“被认为是”26、从下列选项中找出其括号部分与所给单词括号部分读音相同的选项。（）(wh)ole(1分)A、(wh)atB、(wh)omC、(wh)etherD、(wh)eat正确答案选项：参考答案：B27、材料TianwuhasclimbedHuashanmorethan3,000timesinthepastdecade.Heisa（1）,transportinggoodsuptheslopesonhisback,foraliving.Butheismost（2）,forhisdisability:Hehasonlyonearm.

He（3）hisleftarminanaccidentin1992atthecoalmine.Withtwoyoungchildrenandparentsto（4）,hewasworkingovertimethatdaywhenapulleybrake（5）.Afterthatheopenedastore,butitwentbankruptfromtoomany（6）sales.（7）hishardwork,hewasleftwithnothingbutdebts.ThenheheardaboutbearersforHuashanMountainfromafriendandthoughtitwouldbean（8）job.

Hisfirstjobwasto（9）30kilogramsofgoodstoHighLadder.Hehadacompanionwho（10）mid-way,buthefinishedhisjobwith（11）paininhisknees.Butashe（12）experiencethroughtheyears,hehasdevelopedhisown（13）forclimbingthemountain.

Nowhecarries60kilogramsofgoodsupthemountaineveryday—1kilogrammorethanhisownbodyweight.（14）,hemakesthreetofourtripseachdaytoandfrom.“I（15）eachstepverycarefullyandhaveneverhadanyaccidentinthepast10years.”Hesaid.

Beingabearerisatiresomeanddulljobinmanypeople'sminds,butheenjoyshimself.Heap-preciatesandremembersthecalligraphy（16）intherocksandcopiesthem.Hisfavoriteoneis,“Thoughheavysnowfallsdownonverdant(青翠的)pines,thepinesstillstand（17）。”Heoncesaid,“I'dliketostayherebecausethemountainpaysmyhardwork（18）。”

“Idon'tlament(对……感到悲痛)formy（19）daysandwillnotfearthefuture,”Hesaid.Thepainstakingjobhasgivenhimastrong（20）第19空填（）。(1分)A、oldB、lastC、pastD、hard正确答案选项：参考答案：C解析考查形容词词义辨析。old意为“老的；旧的”;last意为“最后的”;past意为“过去的”;hard意为“难的”。根据下文的“willnotfearthefuture”可知，此处用“过去的日子”符合语境，past和future是反义词复现。故选C。28、材料Iwaswalkinghomefromschoolonedayandithappenedtobeaparticularlycoldandwindyday.Itwas（1）andIwascrazyenoughtoforgetmyhatandscarf.Youcanimaginemycheekswererosy（2）andmyhandswereasnumbastheycanbe.

Allofasudden,anoldlady（3）upbesidemeandaskedifIwouldlikearide（4）.Atfirst,IsaiditwasOKandher（5）smilemelted(融化)awaythethoughtthatIshouldnevertalkto（6）!Wehadanamazingchatandshewasjust（7）agoodwoman.Shetoldmeher（8）andshedroppedmeoff.

Ididn'tseeherortalktoherforaboutamonthandonenightasI（9）herkindgesture,Idecidedtoreturnthefavor.So,Imadealotof（10）andwalkeddowntoherhousewithmy

friend.AtfirstIwasabit（11）shewouldn'tremembermeorthinkthatIwasabadmanwhopoisonedcookiesbutluckily,Iwas（12）wrong.Shewassohappy,andshehuggedmeandkissedmeandseemedso（13）thatsomeonewoulddosomethinglikethat!

WhenIgothomemymumtoldmethatshe（14）andtoldmymumonthephonethatshe（15）becauseshewassotouched.Shesaidshewouldnever（16）thekindnessthatwasgiventoher!Thatfilledmewithsuch（17）!Therereallyisnothingelsejoyfullikehelping（18）andmakingsomeone'sday（19）!

Letusneverforgetthejoyweget（20）givingothersahand!第14空填（）。(1分)A、visitedB、cameC、droveD、called正确答案选项：参考答案：D解析考查动词词义辨析。visited意为“参观；拜访”;came意为“来”;drove意为“驾驶”;called意为“打电话”。根据下文的“toldmymomonthephone”可知，这位老妇人给“我”妈妈打电话。故选D。29、材料

Daddyjustdidn'tknowhowtoshowlove.ItwasMomwhoheldthefamilytogether.Hejustwenttoworkeverydayandcamehomeandhe'dhavealistof(sins)we'dcommittedandhewouldscoldusaboutthem.

OncewhenIstoleacandybar,hemademetakeitbackandtellthemallIstoleitandthatI'dunpackboxestopayforit.ButitwasMomwhounderstoodIwasjustakid.

IbrokemylegonceontheplaygroundanditwasMomwhoheldmeinherarmsallthewaytothehospital.

Atmybirthdayparties,Dadalwaysseemedsortofoutofplace,Hejustbusiedhimselfblowingupballoons，andsettinguptables，andrunningerrands(跑腿).ItwasMomwhocarriedinthecakewithcandlesonitformetoblowout.

IrememberwhenMomtoldhimtoteachmehowtorideabicycle,Itoldhimnottoletgo,buthesaiditwastime.IfellandMomrantopickmeup,buthewavedheroff,Iwassomad,butIshowedhim.Igotrightbackonthatbikeandrodeitmyself,Hedidn'tevenfeelembarrassed,hejustsmiled.

WhenIwenttocollege,Momdidallthewriting.HejustsentchecksandalittlenoteabouthowgreathisgrasslookednowthatIwasn'tplayingfootballonit.

WheneverIcalledhome,heactedlikehewantedtotalk,buthealwayssaid,“I'llget

your

mother.”

Allmylifehesaid,“Whereareyougoing?Whattimeareyoucominghome?No,youcannotgo.”Daddyjustdidn'tknowhowtoshowlove…Unless…

IsitpossibleheshoweditandIdidn'trecognizeit?

Whatdidthewriterintendtotellusinthispassage?(1分)A、

His

mother

loved

him

more

than

his

father.B、

His

father

was

unkind

to

him.C、

His

father

wasn't

good

at

expressing

his

love

to

his

kid.D、Hisfatherdidn'tcaremuchabouthim.正确答案选项：参考答案：C30、Theheavyraincan'tkeepus________onapicnic．

(1分)A、forgoingB、fromgoingC、ongoingD、going正确答案选项：参考答案：B解析大雨不能阻止我们去野餐。keep...fromdoingsth.意为"阻止/防止……做某事"。31、Thewomanmurderedherfriendandto.

(1分)A、wassentenced,deathB、sentencing,dieC、sentenced,deathD、sentenced,die正确答案选项：参考答案：A解析考查被动语态和固定短语。句意：这个女人谋杀了她的朋友，她被判死刑。sentencesBtodeath意为判某人死刑，主语Thewoman和sentence之间是被动关系，该句应用被动语态。综上，A选项正确。32、材料Whydopeopleplayfootball?It'sa(1)gameandit'sdangeroustoo.Twenty-twomenfightforsixtyminutestomake(2)manygoalsastheycan.Theygetmoreblackeyes,bruiseandbrokenbonesthanthey(3)points.Footballplayersmustbemad.

Andwhydopeoplewatchfootball?They(4)bemadtoo.Theycertainly(5)andscreamlikemadmen.I'mafraid(6)nearafootballfieldwhenthey'replayingagame.Thecrowdsaredangerous.I'd(7)stayhomeandwatchTV.ButwhathappenswhenIturnit(8)?They'reshowingafootballgame.SoIturnontheradio.WhatdoIhear?The(9)footballscores.AndwhatdoIseewhenIopenanewspaper?Picturesoffootballplayers,interviewswith(10)players,scoresoffootballgames.

第(7)选（）(1分)A、rather

B、better

C、like

D、fairly正确答案选项：参考答案：A33、Hestoodup________seethewordsontheblackboardclearly.

(1分)A、suchthatB、soasC、sothatD、inorderto正确答案选项：参考答案：D解析他站起身来看清楚黑板上的字。suchthat：使得满足…的条件;是这样…以致;如此;soas：只要;用于否定句和疑问句;像…般那样;sothat：因此;以便;inorderto：为了;以便;目的在于;D符合34、材料Considerthesesituations:Youhavejustreadanexcellentbookandwanttotellafriendaboutit.Youhaveseenanexcitingmovieandwantto（1）yourinstructortogotoseeit.Youhaveheardaninspiringlecture,andwantto（2）yournewfoundknowledgewitharoommatewhodidn'tattendthelecture.

Howtogivethistypeof（3）?Youcouldtelleverythingyou（4）aboutthebook,movie,orlecture,butyouwillprobablyjustwanttoselectthe（5）pointsandtellthesetoyourlistener.This,ofcourse,iscalledsummarizing.

Tocreateagoodsummary—onethatisbothaccurateandbrief—youneedtofollowtwosteps.First,（6）informationbyreading,takingnotes,orlisteningcarefullysothatyoursummaryisasbriefaspossiblebutstillaccurateand（7）.Youraudiencewillhelpyoudecidehowthoroughyouneedtobe.Ifyougiveyoursummaryto（8）perhapsforanexamination,itwillneedtobeextremelycomplete

（9）accurate.Youwillneedtokeepinmindany（10）yourinstructormighthavegivenyouduringthelecturetoindicatewhatheorsheconsidersespeciallyimportant.Ifyouaresummarizingamovieforafriend,youcanbelessthorough.Partofthetaskofsummarizingisknowingwhattoincludeandwhattoleaveout.

第(10)选（）(1分)A、talks

B、passages

C、clues

D、stories正确答案选项：参考答案：C35、Mumpromisedthatshe（）anewcomputerformeifIlearntcomputerprogramming.(1分)A、buysB、willbuyC、boughtD、wouldbuy正确答案选项：参考答案：D解析考查过去将来时。句意为：“妈妈答应如果我学会了电脑编程，她会给我买一台新电脑。”宾语从句中，主句为一般过去时，从句也应用相应的过去时态，所以排除A和B;if引导的条件状语从句，从句用的是一般过去时，所以主句应用过去将来时。故选D。36、Itriedtopersuadehimnottosmoke,buthe（）listentome.(1分)A、wouldn't

B、couldn'tC、hadbetter

D、usedto正确答案选项：参考答案：A37、—Asweknow,theearthistheplanet________providesuswithwhatweneed.

—Soit’sourdutytoprotectit.

(1分)A、whichB、whatC、whom正确答案选项：参考答案：A38、---Hetraveledaroundtheworldalonewhenhewassixteenyearsold.---Wow,______________.

(1分)A、that'sreallysomethingB、goodluck.C、I'mwithyouonthat

D、it'snotabigdeal

正确答案选项：参考答案：A解析考查情景交际。句意：他十六岁的时候就独自一人环游全世界了。---真了不起！Athat'sreallysomething真了不起；Bgoodluck.祝好运；CI'mwithyouonthat我同意你的观点；Dit'snotabigdeal没什么大不了的。根据Wow可知，对说话者的陈述表示很惊讶，故选A。39、Hewasbornintheyear（）thewarbrokeout.(1分)A、whichB、thatC、whereD、when正确答案选项：参考答案：D40、SichuanfoodishotterthanShanghaifood.That's（）Ilikeit.(1分)A、whyB、whenC、whatD、where正确答案选项：参考答案：A解析考查表语从句。句意为：“四川食物比上海食物更辣，这就是我喜欢它的原因。”分析句子结构可知，本句是一个表语从句，That是主语，is是系动词，why引导的是表原因的表语从句。故选A。41、---What'sthatonthewall?---It'saphoto（）.(1分)A、ofmyfather'sandmotherB、ofmyfather'sandmother'sC、ofmyfatherandmother'sD、ofonefriendofmine正确答案选项：参考答案：C42、---Hemadeuphismindtodevotehislife________pollution_______happily.

(1分)A、toprevent;toliveB、toprevent;fromlivingC、topreventing;toliveD、topreventing;fromliving正确答案选项：参考答案：C解析

考查固定短语和非谓语动词。句意：他决定为了生活的幸福一生都致力于阻止污染。Devotesthtodoingsth为固定短语，意为致力于做某事，第一空需填topreventing，第二空填不定式，作目的状语，第二空需填动词不定式