2023年山西省運城市成考專升本英語自考模擬考試(含答案)

2023年山西省運城市成考專升本英語自考模擬考試(含答案)學校:________班級:________姓名:________考號:________

一、單選題(50題)1.CountriesthattraditionallyneverallowedforeignstudentstostayandworklikeGermanyortheUnitedKingdom—arefacingtheirownlabor______ininformationtechnologyandrelaxingtheirimmigrationlaws.

A.cutsB.shortagesC.weaknessesD.imports

2.—What'sthechanceofthere______anelectionthisyear?—Ihavenoidea.

A.isB.tobeC.beingD.be

3.—That'smewhenIgotmarried.SeewhatIlooklikenow!—Whynotgoonadiettogetinto______?

A.shapeB.formC.appearanceD.body

4.Busyastheyare,parentsshould______atleasttwohourstospendwiththeirchildren.

A.setoutB.setawayC.setasideD.setoff

5.Thewaterwillbefurtherpollutedunlesssomemeasures______.

A.willbetakenB.aretakenC.weretakenD.hadbeentaken

6.Thescientistsallagreedthatrulesofphysics,______weareallfamiliar,governtheworldA.towhichB.onwhichC.whichD.withwhich

7.Hishandwritingis______yours.

A.morebetterB.aswellasC.muchbetterthanD.asbetteras

8.Mr.Black,ournewEnglishteacher,isstrict______kind.

A.orB.butC.withD.aswell

9.Notuntilhelefthishome_______toknowhowimportantthefamilywasforhim.

A.didhebeginB.hadhebegunC.hebeganD.hehasbegun

10.Icanneverforget______thefamousactressduringhervisittoourschool．

A.havingbeenmetB.tomeetC.tohavemetD.meeting

11.Thenovelwrittenbytheauthor_______well,butfiveyearsagronoonecouldhaveimaginedhowgreatarolehe_______intheliteraryworldA.sells;wastoplay

B.selling;wasplaying

C.sold;hadplayed

D.sell;isplaying

12.Whathedescribedasonlya______detailIthoughtwasthemostimportantpartoftheplan.

A.commonB.plainC.justD.mere

13.Sicknessdeprivedme______thepleasureofseeingyou.

A.fromB.ofC.outofD.with

14.Sometimeschildrenhavetrouble______factfromfictionandmaybelievethatsuchthingsactuallyexist.

A.toseparateB.separatingC.forseparatingD.ofseparating

15.______yourhomeworkandmakesurethatyoudon't______anymistakes.

A.Do;doB.Make;makeC.Make;doD.Do;make

16.______hecome,theproblemwouldbesettled.

A.WouldB.ShouldC.ShallD.If

17.-Betweenthetwopossibleplans,I‘mbound_____thesecondoneA.favouringB.tofavourC.forfavouringD.tofavouring

18.Thatistheonlywaywecanimagine_______theoveruseofwaterinstudents‘bathrooms.

A.reducingB.toreduceC.reducedD.reduce

19.Haveacigarette,______?

A.willyouB.don'tyouC.doyouD.aren'tyou

20.Balloonsfloatintheair_________boatsdoonthesea.A.justasB.whenC.thatD.where

21.tosunlightfortoomuchtime,asthedoctorssay,willdoharmtoone‘sskin.

A.Beingexposed

B.Havingexposed

C.Exposed

D.Afterbeingexposed

22.Iwonderedwhatdifficultyhehad_________theplan?

A.tocarryout

B.carryingout

C.carriedout

D.withcarryingout

23.—ThisismynewdogHisnameisWisdom—That'sinterestingWhy______didyougivehimsuchaname?

A.intheearthB.inworldC.onearthD.ontheworld

24.Afterallthistimeyou‘dthinkhe‘dhaveforgotten，________?

A.shouldyouB.wouldn"tyouC.don"tyouD.doyou

25.Theyrequiredthatallthenecessarydocuments______tothepresident'sofficebeforetheendofthismonth.

A.behanded

B.mustbehanded

C.shouldhandin

D.hadbeenhandedin

26.She'sfainted.Throwsomewateronherfaceandshemay______.

A.comeroundB.comebackC.comeagainD.comeout

27.Thebankisreportedinthelocalnewspaper,_______inbroaddaylightyesterday.

A.beingrobbed

B.havingbeenrobbed

C.tohavebeenrobbed

D.robbed

28.—TheremustbeadozenpensinthishousebutIcanneverfindonewhenIneedthem.—Keeplooking.______issuretoturnup.

A.OneB.ItC.ThatD.This

29.Wecanassigntheworkto__________isreliable.

A.whoseB.whomC.whoeverD.whomever

30.

Allthestudentswenttothemagicshowyesterday.Itwasreally______A.amusinglyB.amuseC.amusingD.amused

31.Mary，_________here——everybodyelse，staywhereyouare．

A.comeB.comesC.tocomeD.coming

32.Myfather______mebysayingthatIcouldwininthespeechcontest,soItookpartinit.

A.discouragedB.encouragedC.preventedD.asked

33.Whenwe______themuseumisnotdecided.

A.visitedB.visitC.willvisitD.visiting

34.—Theeducationsystemratherthantheteachers______toanswerfortheoverburdenonthestudents—IagreeIhopethereform.beingcarriedoutinourcountrywillhangaboutthe_____results.

A.are;desiredB.is;desiredC.are;desiringD.is;desiring

35.Thesquirrelwasluckythatitjustmissed_______.

A.catchingB.tobecaughtC.beingcaughtD.tocatch

36.Wemust__earlyinthemorningsoastocatchthefirsttrain.

A．setup

B．setout

C．setabout

D．setaside

37.Little_________thattheirplanhasbeenDiscovered．

A.didtheysuspect

B.dothesuspect

C.dotheysuspect

D.theysuspect

38._____cryingsadly,heraisedhisheadandlettearsstreamdownhisfaceonpurposeA.TobeseenB.SeeingC.ToseeD.Havingseen

39.Iwonderhowmuch______.

A.thatcarwasB.wasthatcarC.isthatcarD.thatcaris

40.______today,bewouldgettherebyFriday.

A.Wereheleave

B.Wasbeleaving

C.Werehetoleave

D.Ifheleaves

41.Finallyhegottimeforaglance______thisreport.

A.offB.roundC.onD.at

42.Itisreportedthatmanyanewhouse_______atpresentinthedisasterareaA.arebeingbuilt

B.werebeingbuilt

C.wasbeingbuilt

D.isbeingbuilt

43.Thesenationalparksareveryimportantforpreservingmanyanimals,whichwouldruntheriskofbecomingextinct.

A.insteadB.thereforeC.neverthelessD.otherwise

44.While______ajob,thegraduatestudentgotanoffertostudyabroad

A.appliedforB.applyingtoC.appliedtoD.applyingfor

45.Tomwasabouttoclosethewindows_______hisattentionwascaughtbyabirdA.whenB.suddenlyC.andD.till

46.Janehasbrownhair,infact,it'squitesimilarinshade______yours.

A.asB.withC.likeD.to

47.Inoticedhiseyes______,becausetheywereverylarge.

A.inparticularB.withparticularC.inspecialD.withspecial

48.TomandJackarebothveryclever._________,Tomis____________Jack.

A.Allinall;asacleverboyas

B.Inotherwords;ascleveraboyas

C.Thatistosay;asacleverboyas

D.Inword;ascleveraboyas

49.Thisisjusttheplace______heandhiswifevisitedlastyear.

A.whereB.thatC.whenD.why

50.Thankyouforthe______youdidme.tomovethesofaupstairs.

A.favorB.goodC.helpD.kindness

二、翻譯(5題)51.Thisopportunitytoescapetherealitiesofeverydaylifeis,Ithink,themainattractionofabookshop.

52.Theyoungmanofferedtotaketheoldwomantotherailwaystation.

53.Bothsoundandnoisecanhavenegativeeffects,butwhatismostimportantisifthepersonhascontroloverthesound.

54.如果有足夠的人力和資助，我們的目標一定能實現(xiàn)。

55.Pricesdeterminehowresourcesaretobeused.Theyarealsothemeansbywhichproductsandservicesthatareinlimitedsupplyaredisturbedamongbuyers.

三、英譯漢(10題)56.Inrecentyearsmanycountriesoftheworldhavebeenfacedwiththeproblemofhowtomaketheirworkersmoreproductive.(Passage3)

57.Isawtheman(knockeddownbyacarinthestreet).

58.Pricesreachacertainlevelatwhichquantitydemandedisequaltoquantitysupplied.

59.However,(theChinesehadlittleornocontactwithEuropeatthattime),soitisnotclearwhetherornottheEuropeanslearnedaboutprintingfromtheChinese.

60.Somewascollectedbythisseason'splantsascarboncompounds.Somewasstoredbyplantsandtreesagesago.(Passage3)

61.However,whateveritsvirtues,theoldsharedliteracyculturehadgone...

62.Itisnecessaryforustolearntheirlanguageinordertocommunicatewiththesepeopleandtolearnfromthem.

63.TheLachineandWellandCanals,twoofthemostimportantsystems,wereopenedin1825and1829,respectively.(PassageOne)

64.Menhavebeentravellingacrossandaroundtheequatoronwheels,ontheirfeetorinshipsforthousandsofyears;butonlyafewmen,withgreatdifficultyandinveryrecenttime,haveevercrossedtheicetotheNorthPole.(Passage1)

65.OnChristmasEve,(youngchildrenareoftentornbetweenthedesiretogotobedearlysothatSantaClauswillbringtheirpresentsquicklyandthedesiretostayuplateincasetheymissanyofthefun).

四、詞匯與語法知識(10題)66.Sandycoulddonothingbut___tohisteacherthathewaswrongA.admitB.admittedC.admittingD.toadmit

67._______theimportanceofwearingseatbeltswhiledriving．

A．Littletheyrealize

B．Theylittledorealize

C．Littlerealizedothey

D．Littledotheyrealize

68.Shekeptacloseeye__________thesickchildanddidn’tsleepthewholenight.

A.atB.inC.forD.on

69.Sallyseldomdoesherhomeworkinthemorning,__.

A．sodoesJerry

B．Jerryistoo

C．neitherdoesJerry

D．Jerrydoesn'ttoo

70.Hewenttothebookstoreandbought__________．

A.dozenbooks

B.dozensbooks

C.dozenofbooks

D.dozensofbooks

71.Whichismoreimportant，the__________appearanceofabookoritscontent?

A.artificialB.surfaceC.physicalD.substance

72.—Excuseme,areyouwaitingforthebus?

—Yes,Iam.Butthebusissolate.__，howcanIgettoNo.1MiddleSchool?A.Intheway

B.Ontheway

C.Outoftheway

D.Bytheway

73.

第15題Aprogrammedcomputerbeginstoshowonitsscreenthefiguresyouneed

A.tobeswitchedon

B.whenswitchedon

C.switchingon

D.beingswitchedon

74.Progresssofarhasbeenverygood．__________，wearesurethattheprojectwillbecompletedontime．

A.HoweverB.OtherwiseC.ThereforeD.Besides

75.Hetalksasifhe__everything.

A．knows

B．wasknown

C．willknow

D．knew

五、閱讀理解(10題)76.

Themurdererwasatlastfound______.

A.withthehelpofaChevroletowner

B.withthehelpofcomputers

C.byawitness

D.inacar

77.

Whatshouldyoudowhenthedepressedloversayshewantstokillhimself?

A.Don'tcareabouthissayingbecausehewon'tdoit.

B.Monitorwhetherheistakingmedication.

C.Inform.thepatient'sdoctorandgethelp.

D.Accusehimofpretendingillness.

78.

Themainideaofthethirdparagraphisthat______.()

A.amaturetorpedoiscapableofproducingenoughelectricitytoknockdownaman

B.themassofthefishdecidestheintensityofelectricpoweritgenerates

C.thestrengthofshockgivenbyayoungelectricraycanonlylightthebulbofapocketflashlight

D.tomakefulluseoftheenergyproducedbyelectricfish,suitablewiresshouldbeavailable

79.Duringtheearlyyears,peoplewerenevershutoutbydoorsbecause______.

A.theywereneighbors

B.theywerefriends

C.theydependeduponeachother

D.theygotaccustomedtothat

80.根據(jù)以下內(nèi)容，回答題。

PassageOne

Therehasbeen，inhistory，amanwhowasswallowedbyawhaleandlivedtotellthetale.Theman"snameisJamesBartley.TherecordstoprovehisunusualexperienceareintheBritishAdmiralty.

BartleywasmakinghisfirsttriponthewhalingshipStaroftheEast.Suddenlythelookoutsightedahugespermwhale.Thewhalersknewitwasahugewhalebythesizeofthesprayitblewintotheair.Theyloweredtheirsmallboats.JamesBartleywasinthefirstlongboat.Themenroweduntiltheywereclosetothewhale.Aharpoonwasthrownanditfounditsmark.Itsankintothewhale"sflesh.Themaddenedbeastcrashedintotheboat，snappingitstailatthemenandthewreckageoftheirboats.Whenthesurvivorswerepickedup，JamesBartleywasmissing.

Shortlybeforesunset，thewhalewasfinallycaptured.Thesailorstiedthewhale"sdeadbodytothesideoftheship.Becauseofthehotweatheritwasimportantthattheycutupthewhalerightaway.Otherwise，themeatwouldbegintorotandoilwouldbegintospoil.Whentheygottothestomach，theyfeltsomethingmovingaboutwildly.Theythoughtitwouldbeabigfishstillaliveinside.ButwhentheyopenedthestomachtheyfoundJamesBartley.Afterthistrip，BartleysettledinEngland，andneverreturnedtosea.

Thispassageismainlyabout__________.查看材料

A.howtohuntwhalesfortheiroilandmeat

B.Thehardanddangerouslivesthatwhalershadtolive

C.Thedutiesofeachmanonawhalingship

D.amanwhowasswallowedbyawhaleandlived

81.TheOrdinanceof1784ismostsignificanthistoricallybecauseitembodiedtheprinciplethatnewstatesshouldbeformedfromthewesternregionandadmittedtotheUniononanequalbasiswiththeoriginalcommonwealths.Thisprinciple,whichunderlaythewholelaterdevelopmentofthecontinentalUnitedStates,wasgenerallyacceptedbythistimeandcannotbeproperlycreditedtoanysingleman.ThomasJeffersonhadpresentedpreciselythisideatohisownstateofVirginiabeforetheDeclarationofIndependence,however,andifhedidnotoriginateithewascertainlyoneofthosewhohelditfirst.IthadbeenbasicinhisownthinkingaboutthefutureoftheRepublicthroughoutthestruggleforindependence.HehadnodesiretobreakfromtheBritishEmpiresimplytoestablishanAmericanone--inwhichthenewerregionshouldbesubsidiaryandtributarytotheold.Whathedreamedofwasanexpandingunionofself-governingcommonwealths,joinedasagroupofpeers.

WhichofthefollowingproposalsdidtheOrdinanceof1784incorporate?

A.NewstatesshouldbeadmittedtotheUnioninnumbersequaltotheolderstates.

B.TheUnionshouldmakethewesternregionintotributarystates.

C.NewstatesshouldsharethesamerightsintheUnionastheoriginalstates.

D.Thegreatwesternregionshouldbedividedintotwelvestates.

82.Whydoyouthinktheauthorwrotethepassage?

A.ToexplainwhyPraguehassuchalonghistory

B.ToshowhowdifferentPragueisfromPairs

C.ToletpeopleknowmoreaboutEurope

D.ToencouragepeopletovisitPrague

83.Inthesecondparagraph,"thosewhodon'tfitthepattern"refersto______.

A.highschoolgraduateswhoarenotsuitableforcollegeeducation

B.collegegraduateswhoaresellingshoesanddrivingtaxi

C.collegestudentswhoaren'tbetterfortheirhighereducation

D.highschoolgraduateswhofailedtobeadmittedtocollege

84.Beforethispassage,theauthortalkedaboutthepracticeoftheOxforduniversity,thenwhatistheattitudeheldbyOxforduniversityaboutofferingadmissionopportunityfordonationofmoney?

A.Negative.B.Positive.C.Neutral.D.Indifferent.

85.WhydoesthewriterthinkitisfunnythatDameEdnaisreallyaman?

A.Becausemendon'tusuallygiveGladioli.

B.Becausemenshouldn'tdressup.

C.BecauseDameEdnaismorefamousthanBarry.

D.BecausenooneknowsBarryHumphries.

六、作文(1題)86.Youaretowritein100-120wordsonthetopicGlobalShortageof

FreshWater.YoushouldbaseyourcompositionontheoutlinegiveninChinesebelow

：1.人們認為淡水是取之不盡的

;2.實際上淡水是短缺的;3.我們應(yīng)當怎么辦。

參考答案

1.B解析：cuts“裁減”；shortages“短缺”；weaknesses“弱點”；imports“進口”，故正確選項為B。

2.C

3.A解析：shape意為“(女人的)姿態(tài)，身段”；form意為“形狀，形態(tài)”；appearance意為“外表，樣子”；body意為“身體”。由題意知應(yīng)選A。

4.C

5.B解析：takemeasures意思為“采取措施”，本句應(yīng)用被動語態(tài)。

6.D

7.C解析：much用在句中修飾比較級better。

8.B

9.A

10.D解析：forgetdoingsth．忘了已做過某事。注意區(qū)別forgettodosth。忘了而沒有做某事。

11.A

12.D解析：本題測試形容詞辨析。四個選項的意思分別是“普通的”，“清楚的”，“正義的”，“僅僅的”。根據(jù)句意，D項正確。本句大意為：他僅僅把它作為一個細節(jié)來描述，而我卻認為它是這個計劃中最重要的部分。

13.B解析：本題考查動詞固定搭配的用法。deprive后常接介詞of，表示剝奪什么。

14.B解析：本題考查固定搭配。havetrouble(in)doingsth.“做某事有困難”。句意為：有時孩子們在分清故事和現(xiàn)實方面會有困難，相信故事中的事確實存在。

15.D解析：本題考查動詞搭配。doone'shomework“做作業(yè)”；makemistakes“犯錯誤”。句意為：做作業(yè)，還要保證別犯錯誤。

16.B解析：此處是對將來情況的假設(shè)。虛擬條件句的謂語部分為should，had或were時，可把if省去，而把should，had或were放在從句的主語之前，構(gòu)成主謂部分倒裝。

17.B

18.B

19.A解析：此題考查反意疑問句的用法。主句為祈使句，因此其反意疑問句用willyou。

20.A本句考查兩個并列句之間的連接的詞。題干的意思是：“氣球能夠浮在空氣中正如船能夠浮在海面上一樣。”在四個選項中，只有A項的justas有“正如，猶如”的意思。故選A。

21.A

22.B

23.C

24.B考查反義疑問句。原句應(yīng)是：youwouldthinkhehadhaveforgotten…反義疑問句的規(guī)則是陳述部分是肯定式，疑問部分應(yīng)是否定式。Wouldthink表示推測，疑問部分也應(yīng)選擇would。選項B是正確的?！揪渥哟笠狻磕汶y道還認為他已經(jīng)忘掉了，是嗎?

25.A解析：本題考虛擬語氣在名詞性從句中的用法。在“ask(advise，desire，ordersuggest，require，etc。)+the廣引導(dǎo)的從句中，謂語動詞應(yīng)用“should+認”，should可以省去，再結(jié)合語態(tài)，故A項正確。本句大意為：他們要求所有的必要文件都必須在月底之前交到校長辦公室。

26.A解析：句意：她昏倒了。給她臉上澆些水，或許她會醒過來。本題考查詞組辨析。comeround：過訪，繞道而來，蘇醒過來；comeback：回來，恢復(fù)；comeagain：再說一遍，重復(fù)一遍；comeout：出來，傳出。

27.C

28.A解析：根據(jù)上文提到“findone”，故下文中也應(yīng)填one，表示泛指。

29.C

30.C所有的學生都去看了昨天的魔術(shù)表演。它太令人不可思議了。這里主要考查的是動詞的現(xiàn)在分詞和過去分詞的不同用法。Sth．bedoing表示某一事物令人怎么樣。Sb．bedone表示某人處于某種狀態(tài)。例：Theletteristouching．這封信令人感動。

Iammoved．我很感動。

31.A本題考查祈使句型：

【應(yīng)試指導(dǎo)】句意：Mary，到這里來，其余的人待在原處。根據(jù)句子的結(jié)構(gòu)可判斷出這是個祈使句。所以要用動詞原形開頭。Mary在句中不是

主語，而是“呼語”。

32.B解析：encourage：鼓勵、鼓舞；discourage：使泄氣；prevent：阻止；ask：要求。根據(jù)句意只有選B。

33.C解析：句子的前半部分是主語從句，主語從句中的謂語動詞時態(tài)應(yīng)根據(jù)句意而定。

34.B解析：theeducationsystem是主語，謂語動詞應(yīng)用單數(shù)；thedesiredresults意為“期望的結(jié)果”。

35.C

36.Bsetout意為“出發(fā)，動身”。

37.C

38.A

39.D解析：從句中的問句主謂不倒裝。從句的時態(tài)隨主句。我想知道那輛車的價格。

40.C解析：本題考查倒裝虛擬語氣用法。本句是表示與將來事實相反，所以從句用wereto形式。句意為：如果他今天出發(fā)的話，他就會在星期五以前到達那里。

41.D

42.D

43.D

44.Dapplyto應(yīng)用；applyfor申請

45.A

46.D

47.Ainparticular是固定搭配，意為“特別地”。

48.B

49.B

50.A解析：favor：幫助，一般用domeafavor；good：好處；help不與do搭配：kindness：善良。故選A。

51.能夠提供逃避日?，F(xiàn)實生活的機會我認為是書店的最大誘人之處。能夠提供逃避日?，F(xiàn)實生活的機會，我認為，是書店的最大誘人之處。

52.那年輕人主動提出要送老婦人去火車站。

53.Bothsoundandnoisecanhavenegativeeffects,butwhatismostimportantisifthepersonhascontroloverthesound.聲音和噪音都有副作用，但是最重要的是人是否能夠控制住聲音。

54.Givenenoughmanpowerandfinancialsupport,ourgoalcancertainlybeattained.

55.價格決定資源如何被使用。同時它們也是緊缺產(chǎn)品和服務(wù)的在買者中分配的手段。

56.最近幾年世界上的很多國家都面臨著怎樣提高工人生產(chǎn)率的問題。最近幾年世界上的很多國家都面臨著怎樣提高工人生產(chǎn)率的問題。

57.在馬路上被一輛車給撞倒在馬路上被一輛車給撞倒

58.在這種價格水平下供需數(shù)量達到相等。在這種價格水平下，供需數(shù)量達到相等。

59.中國人當時與歐洲基本上沒什么接觸中國人當時與歐洲基本上沒什么接觸

60.一些太陽能以碳化合物的形式被植物收集而一些儲存在植物和樹體內(nèi)許多年。一些太陽能以碳化合物的形式被植物收集，而一些儲存在植物和樹體內(nèi)許多年。

61.然而不管過去的分享型閱讀文化有何好處那種現(xiàn)象已經(jīng)消逝了。然而，不管過去的分享型閱讀文化有何好處，那種現(xiàn)象已經(jīng)消逝了。

62.為了和這些人交流并向他們學習我們有必要學習他們的語言。為了和這些人交流并向他們學習，我們有必要學習他們的語言。

63.在最重要的運河中有兩條叫拉其尼和威蘭德運河它們分別于1825年和1829年開通。在最重要的運河中，有兩條叫拉其尼和威蘭德運河，它們分別于1825年和1829年開通。

64.幾千年以來人們已經(jīng)通過坐車坐船或者步行穿過了赤道及其附近地區(qū)但是最近只有少數(shù)人千辛萬苦地越過寒冰到北極。幾千年以來，人們已經(jīng)通過坐車，坐船或者步行穿過了赤道及其附近地區(qū)，但是最近只有少數(shù)人千辛萬苦地越過寒冰到北極。

65.孩子們常常感到很矛盾.一方面他們想早點上床睡覺以便圣誕老人能很快送來禮物;而另一方面他們又不想睡覺生怕錯過了一些好玩的事情孩子們常常感到很矛盾.一方面,他們想早點上床睡覺以便圣誕老人能很快送來禮物;而另一方面,他們又不想睡覺生怕錯過了一些好玩的事情

66.A

67.D

68.D

69.Cseldom含有否定意義，C項表示Jerry也不。

70.D本題考查數(shù)詞的用法。

【應(yīng)試指導(dǎo)】句意：他去了書店買了許多書。dozen意為“一打，十二個”，與數(shù)詞連用時要用單數(shù)形式。與of連用時要用復(fù)數(shù)形式。dozensof意為“若干，許多”。

71.C

72.D從整個語境中可以看出，所填部分為一獨立成分，是引起所問問題的插入語，應(yīng)用bytheway，意思是“順便問一下”。

73.Bwhenswitchedon是個省略了“itis”的時間狀語從句，意思是“當它被打開時”。A．tobeswitchedon是不定式的被動式，不能表示時間；C．switchingon是現(xiàn)在分詞