2021年遼寧省撫順市普通高校對口單招英語自考測試卷(含答案)

2021年遼寧省撫順市普通高校對口單招英語自考測試卷(含答案)學(xué)校:________班級:________姓名:________考號:________

一、單選題(50題)1.12．Itwasthetraining_______hehadatschool_______madehimagoodjumper．

A.what;whatB.that;thatC.what;thatD.that;had

2.Theproblemwassettledtothecompleteofthem,sotheydidn‘tcomplain.

A.amazementB.satisfactionC.disappointmentD.attraction

3.Hishandwritingis______yours.

A.morebetterB.aswellasC.muchbetterthanD.asbetteras

4.Sometimeschildrenhavetrouble______factfromfictionandmaybelievethatsuchthingsactuallyexist.

A.toseparateB.separatingC.forseparatingD.ofseparating

5.Wemust__earlyinthemorningsoastocatchthefirsttrain.

A．setup

B．setout

C．setabout

D．setaside

6.Finallyhegottimeforaglance______thisreport.

A.offB.roundC.onD.at

7.Noconclusionhasbeen______yet.

A.achievedB.reachedC.attainedD.arrived

8.Sicknessdeprivedme______thepleasureofseeingyou.

A.fromB.ofC.outofD.with

9.--Ifyouareofferedatriptothemoon,______it?--Ofcourse.Whynot?

A.didyouaccept

B.areyougoingtoaccept

C.willyouaccept

D.wouldyouaccept

10.Whathedescribedasonlya______detailIthoughtwasthemostimportantpartoftheplan.

A.commonB.plainC.justD.mere

11.______hecome,theproblemwouldbesettled.

A.WouldB.ShouldC.ShallD.If

12.Thenovelwrittenbytheauthor_______well,butfiveyearsagronoonecouldhaveimaginedhowgreatarolehe_______intheliteraryworldA.sells;wastoplay

B.selling;wasplaying

C.sold;hadplayed

D.sell;isplaying

13.Thesearchwas_______whennightcame,eventhoughthechildhadnotbeenfoundA.approvedB.acquiredC.achievedD.abandoned

14.Tomwasabouttoclosethewindows_______hisattentionwascaughtbyabirdA.whenB.suddenlyC.andD.till

15.Janehasbrownhair,infact,it'squitesimilarinshade______yours.

A.asB.withC.likeD.to

16.—What'sthechanceofthere______anelectionthisyear?—Ihavenoidea.

A.isB.tobeC.beingD.be

17.tosunlightfortoomuchtime,asthedoctorssay,willdoharmtoone‘sskin.

A.Beingexposed

B.Havingexposed

C.Exposed

D.Afterbeingexposed

18.______today,bewouldgettherebyFriday.

A.Wereheleave

B.Wasbeleaving

C.Werehetoleave

D.Ifheleaves

19.Letmehelpyou,______?

A.won'tyonB.willyouC.shallID.shan'tI

20.Thisisjusttheplace______heandhiswifevisitedlastyear.

A.whereB.thatC.whenD.why

21.Afterallthistimeyou‘dthinkhe‘dhaveforgotten，________?

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

22.Notuntilthisterm______torealizehowimportantthissubjectistohisfuturecareerasadiplomat.

A.hebeganB.didhebeginC.hehasbegunD.thathehasbegun

23.TomandJackarebothveryclever._________,Tomis____________Jack.

A.Allinall;asacleverboyas

B.Inotherwords;ascleveraboyas

C.Thatistosay;asacleverboyas

D.Inword;ascleveraboyas

24.Inoticedhiseyes______,becausetheywereverylarge.

A.inparticularB.withparticularC.inspecialD.withspecial

25.—Hasthewalletbeenreturnedyet?—No，butweexpect______anydaynow.

A.toreturnit

B.ittoreturn

C.ittobereturned

D.itreturned

26.Helenalwayshelpshergrandmothereventhoughgoingtoschool____mostofherday.

A.takesupB.makeupC.saveupD.putup

27.TheheavysnowcouldnotkeepUS_________goingouttowork．

A.onB.upC.uponD.from

28.While______ajob,thegraduatestudentgotanoffertostudyabroad

A.appliedforB.applyingtoC.appliedtoD.applyingfor

29.—Theeducationsystemratherthantheteachers______toanswerfortheoverburdenonthestudents—IagreeIhopethereform.beingcarriedoutinourcountrywillhangaboutthe_____results.

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

30.Whenwe______themuseumisnotdecided.

A.visitedB.visitC.willvisitD.visiting

31.Thewaterwillbefurtherpollutedunlesssomemeasures______.

A.willbetakenB.aretakenC.weretakenD.hadbeentaken

32.Mary，_________here——everybodyelse，staywhereyouare．

A.comeB.comesC.tocomeD.coming

33.Thesenationalparksareveryimportantforpreservingmanyanimals,whichwouldruntheriskofbecomingextinct.

A.insteadB.thereforeC.neverthelessD.otherwise

34.Thatistheonlywaywecanimagine_______theoveruseofwaterinstudents‘bathrooms.

A.reducingB.toreduceC.reducedD.reduce

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

36.Haveacigarette,______?

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

37.Notuntilhelefthishome_______toknowhowimportantthefamilywasforhim.

A.didhebeginB.hadhebegunC.hebeganD.hehasbegun

38.WewereoverjoyedatthenewsofChina__________anotherman-madesatel1ite．A.startingB.1aunchingC.fightingD.shouting

39.______youmayberight,Ican'taltogetheragree.

A.WhileB.AsC.ifD.Since

40.Balloonsfloatintheair_________boatsdoonthesea.A.justasB.whenC.thatD.where

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

42.Hewasamanofstrongfeelings,______normallylayhiddendeepinsidehim.

A.itB.thatC.thoseD.which

43.Busyastheyare,parentsshould______atleasttwohourstospendwiththeirchildren.

A.setoutB.setawayC.setasideD.setoff

44.NotonlyIbutalsoTomandMary______fondofcollectingstamps.

A.amB.willC.areD.have

45.Thesquirrelwasluckythatitjustmissed_______.

A.catchingB.tobecaughtC.beingcaughtD.tocatch

46.

Allthestudentswenttothemagicshowyesterday.Itwasreally______A.amusinglyB.amuseC.amusingD.amused

47.Mr.Black,ournewEnglishteacher,isstrict______kind.

A.orB.butC.withD.aswell

48.Thankyouforthe______youdidme.tomovethesofaupstairs.

A.favorB.goodC.helpD.kindness

49.Newtypewriterscostabout________priceofthesecond—handones．

A.threetimesthe

B.athreetimes

C.thethreetimes

D.threetimesa

50.Sobadly______inthecaraccidentthathehadtostayinhospitalforseveralweeks.

A.didheinjureB.heinjureC.washeinjuredD.hewasinjured

二、補全對話(10題)51.請在第____處填上正確答案。

52.請在第_____處填上正確答案。

53.3_________________

54.請在第_____處填上正確答案。

55.請在第_______處填上正確答案。

56.――＿＿＿＿．―――What'sthematter7．

A．Hello!

B．IsthatTomspeaking?

C．Help!

D．Excuseme．

57.Student:__________,I’dliketoreturnthesebooks.Assistant:OK.Oh,thesebooksareamonthoverdue.Sorry,youhavetopayafine.Iknow.ButhowmuchshouldIpay?Assistant:Justaminute.Letmecheck.A.HiB.HowareyouC.ExcusemeD.Hello

58.根據(jù)以下資料，回答1~5題。

請在第____處填上正確答案。

59.

第58題請在第58處填上正確答案。

60.

第58題請將58處填上正確答案.

三、完型填空(10題)61.(74)

A.losingB.lookingC.preparingD.fitting

62.請在第_____處填上正確答案。

A．must

B．can

C．need

D．haveto

63.(48)

A.sayB.tellC.giveD.speak

64.25.__________A.AfteritB.ThenC.AtthesametimeD.Later

65.(44)

A.basisB.baseC.basicD.habit

66.(43)

A.encouragesB.preventsC.destroysD.offers

67.【B17】

A.beingB.areC.beD.were

68.________查看材料

A.catchingB.throwingC.beatingD.playing

69.(78)

A.bargainB.fashionC.styleD.mode

70.(64)

A.commandsB.objectivesC.tendenciesD.claims

四、翻譯(20題)71.SectionB

Directions:TranslatethefollowingChineseintoEnglish.

(英語專業(yè)學(xué)生做)

Directions:Inthissection,thereisashortpassageinChinese.ReaditcarefullyandputitintoEnglish.

人生不是上帝為譴責(zé)我們的缺陷而給我們布下的陷阱。人生也不是一場拼寫比賽，不管你拼出多少單詞，一旦出現(xiàn)了一個錯誤，就會前功盡棄。人生更像是一個棒球賽季，即使最好的球隊也會輸?shù)羧种坏谋荣?，即便最差的球隊也有春風(fēng)得意的日子。我們的目標(biāo)就是多贏少輸。當(dāng)我們能夠接受不完整是人性的一部分這個事實時，當(dāng)我們的人生不斷滾動并能欣賞其價值時，我們就會獲得其他人僅渴望的完整人生。我相信這就是上帝對我們的要求：不求“完美”，不求“永不犯錯”，而是求得人生的完整。

72.Manyproposalswereraisedbythedelegates,asweexpected._____________________________________________________________________________

73.Thegirltakesafterhermotherandisalwayscheerful.

74.Toomuchtourismcanbeaproblem.Iftourismgrowstooquickly,peoplemustleaveotherjobstoworkinthetourismindustry.

75.Bothsoundandnoisecanhavenegativeeffects,butwhatismostimportantisifthepersonhascontroloverthesound.

76.Anotherreasonisthat,thankstomodernmedicineandhigherlivingstandard,peoplelivelongernow.

77.ScientistssaythatplantandanimallifeinthousandsoflakesintheUnitedStatesandCanadahasalreadybeendestroyedbyacidrain.

78.Ifyouhavetojump,jumpasfarasyoucan.

79.Itseemsthatthemachinewasnotpackedproperlyortestedbeforedispatch.

80.直到我告訴她，威廉姆女士才知道。_____________________________________________________________________________

81.Sheisdeterminedtobeasingernomatterwhatdifficultiesshemaymetwith.

82.Irefertoyouradvertisementinlastmonth'sissueofComputerWorldforasalesrepresentativeinAustralia.Iwouldliketoapplyforthisposition.

83.我過去常常浪費很多時間玩游戲。_____________________________________________________________________________

84.Thisbookisdividedintosixteenunitesthandealswithtopicsofeverydayconversation.

85.我能向你保證這一信息是可靠的.

86.如果有足夠的人力和資助，我們的目標(biāo)一定能實現(xiàn)。

87.Itistheresultofthefloodthatmadepeoplefullyrealizetheimportanceofplantingtrees.

88.TodaythecomputerplaysavitalroleinthelivesofmanyAmericansandisseenasoneofthegreatesttechnologicaldevelopmentsofalltimes.

89.必須采取有效措施來解決空氣污染。____________________________________________________________________________

90.Canadianagriculturalproductionkeptupwiththecountry'sdemandandstillhadsurplusesforsaletotheindustrialcentersofEurope.

五、閱讀理解(5題)91.PassageThreeFormorethansixmillionAmericanchildren,cominghomeafterschoolmeanscominghometoanemptyhouse.Theyspendpartofeachdayalone.

Theyarecalled"latchkeychildren".

They'rechildrenwholookafterthemselveswhiletheirparentswork.

Andtheirbadconditionshavebecomeasocialproblem.LyneBrownwasoncetheheadmasterofanelementaryschool.

Shesaid,"Alotofkidshadchainsaroundtheirneckswithkeysattached.!wasconstantlytellingthemtoputtheminsideshirts.

Thereweresomanykeys,itnevercametomymindwhattheymeant.",slowly,shelearnedtheywerehousekeys.Lynelearnedoftheimpactworkingcouplesandsingleparentswerehavingontheirchildren.

ShefoundthatFearisthebiggestproblemfacedbychildrenathomealone.Manyhadnightmaresandwereworriedabouttheirownsafety.Themostcommonwaylatchkeychildrendealwiththeirfearsisbyhiding.Itmightbeinashowerstall,underabed,inacloset.

ThesecondisTV.

They'lloftenplayitathighvolume.

It'shardtogetstatistics(情況，材料)onlatchkeychildren.Mostparentsareslowtoadmittheyleavetheirchildrenalone.41.Themainideaabout"latchkeychildren"isthatthey______.A.aregrowinginnumbersB.arealsofoundinmiddle-classneighborhoodsC.watchtoomuchtelevisionduringthedayD.sufferproblemsfrombeingleftalone

92.

Agoodplanwhenfightingagainstanenemytankisto______.

A.shootitsback

B.getneartoitfrombehind

C.moveittotheside

D.moveoutofitsway

93.Thefirstparagraphcatchesthereader'sattentionwith______.

A.dramaticfacts

B.afirsthandstory

C.anemotionalappeal

D.sharplycontrastingideas

94.Whatcanweinferfromthepassage?

A.Thetemplehasalonghistory.

B.ThetempleistotheeastofBaitasi.

C.ThebricksinthetemplearenotsovaluableasthoseintheForbiddencity.

D.TherenovationwasdoneaccordingtotheordersofEmperorQianlong.

95.Jimwasintelligent,buthehatedhardwork.Hesaid,"Youworkhard,andmakealotofmoney,andthenthegovernmenttakesmostofit.Iwanteasyworkthatgivesmelotsofmoneyandthatthegovernmentdoesn'tknowabout."

Sohebecameathief--buthedidnotdothestealing.Hegototherstodoit.Theyweremuchlessintelligentthanhewas,sohearrangedeverythingandtoldthemwhattodo.

Onedaytheywerelookingforrichfamiliestorob,andJimsentoneofthemtoalargebeautifulhousejustoutsidethetown.

Itwasevening,andwhenthemanlookedthroughoneofthewindows,hesawayoungmanandagirlplayingonapiano.

WhenhewentbacktoJim,hesaid,"Thatfamilycan'thavemuchmoney.Twopeoplewereplayingonthesamepianothere."

Theword"intelligent"inthefirstsentenceisclosestinmeaningto______.

A.cleverB.honestC.interestingD.modest

六、作文(1題)96.Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopic"HowIFinanceMyCollegeEducation".Youshouldwriteatleast120words,andbaseyourcompositionontheoutlinegiveninChinesebelow：1.上大學(xué)的費用（tuitionandfees.可以通過多種途徑解決；2.哪種途徑適合于我（說明理由）。

參考答案

1.B

2.B

3.C解析：much用在句中修飾比較級better。

4.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。

5.Bsetout意為“出發(fā)，動身”。

6.D

7.B解析：本題考查固定搭配的用法。當(dāng)否定詞位于句前時，得出結(jié)論應(yīng)用reach/achievein/arriveatconclusion，故選B。

8.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。

9.D

10.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(xì)節(jié)來描述，而我卻認(rèn)為它是這個計劃中最重要的部分。

11.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。

12.A

13.D

14.A

15.D

16.C

17.A

18.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(dá)那里。

19.A解析：反問疑問句的陳述部分是肯定式時，疑問部分用否定式。以letme或letus起始的反問疑問句，疑問部分用willyou或won'tyou，所以選項A是正確的。

20.B

21.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(rèn)為他已經(jīng)忘掉了，是嗎?

22.B解析：表示否定的副詞前置于句首，句子需要不完全倒裝，即助動詞提前。其余選項均可排除。除Notuntil外還有never，seldom，rarely，seldom，no，little，hardly，innotime等否定副詞或結(jié)構(gòu)放在句首時，句子需要部分倒裝。

23.B

24.Ainparticular是固定搭配，意為“特別地”。

25.C

26.A

27.D

28.Dapplyto應(yīng)用；applyfor申請

29.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”。

30.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。

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

32.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”。

33.D

34.B

35.A

36.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。

37.A

38.Blaunch為“發(fā)射”講；其余為干擾項。

39.A解析：while意為“雖然”；as意為“因為”；if意為“如果”；since意為“因為”。根據(jù)題意選A。

40.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?！痹谒膫€選項中，只有A項的justas有“正如，猶如”的意思。故選A。

41.D

42.D解析：which修飾非限定性定語從句，指代前邊一句話。本題涉及句法知識——簡單句、并列句和復(fù)合句。例如：Hehastwodaughters.Theyaredoctors.(簡單句)Hehastwodaughtersandtheyaredoctors.(并列句)Hehastwodaughters,whoaredoctors．(復(fù)合句)

43.C

44.C解析：notonly…butalso連接主語時，謂語動詞根據(jù)就近原則由butalso后的成分來決定。TomandMary是兩個人，所以動詞用復(fù)數(shù)形式。

45.C

46.C所有的學(xué)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。

47.B

48.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。

49.A【句子大意】新打字機的價格是二手貨的三倍。

50.C解析：副詞so置于句首，句子應(yīng)該用倒裝語序，某人受傷用sb.beinjured來表示，故答案為C。

51.B

52.CTheATMgivesyoubills

這是有關(guān)如何使用ATM機的一段對話。

Susan：ATM機怎么使用?

Alan：第一步，把你的銀行卡插入這個孔內(nèi)，輸入你的個人識別碼。

Susan：輸完了。然后選擇取款?

Alan：對，選擇取款，不要選擇賬號信息。

Susan：下一步呢?

Alan：ATM機會去調(diào)你的活期存款或儲蓄賬戶。

Susan：然后呢?

Alan：輸入你要從存折里取出的錢數(shù)。

Susan：我能取多少?

Alan：大多數(shù)存折最多可以取400美元。

Susan：我輸入了要取的錢數(shù)之后會怎樣?

Alan：ATM機給你現(xiàn)鈔。通常是20美元一張的。從這個孔拿錢和收據(jù)。

53.Wouldyoulikesomewine

54.F

55.AIreallywanttoseeyournewcar

這是有關(guān)買車的一段對話。

Brown：我看那種車開起來一定很不錯，還很便宜。

William：的確是個不錯的選擇。你還需要一位機械師幫你檢查檢查，確保車的質(zhì)量。

Brown：我的朋友是機械師，今天上午他已經(jīng)給我看過了。

William：你真聰明，提前想到了。你跟賣家說好價錢了嗎?

Brown：說好了。他同意我提出的價位。

William：你考慮怎么付費了嗎?

Brown：我為買車準(zhǔn)備了足夠的現(xiàn)金。

William：看來你已經(jīng)把一切都考慮好了。我跟你一塊兒去付款吧，幫你把車開回家。

Brown：那太好了。這樣我就輕松多了。

William：咱們現(xiàn)在就去辦吧，真想看看你的新車!

56.C

57.C

58.D

59.G

60.H

61.D

62.B可以說，手機在關(guān)鍵時刻能救人生命。這是說手機的好處。must意為“必須”；can意為“能夠”，need意為“需要，必須”；haveto意為“不得不”。

63.B解析：首先應(yīng)讀懂全句。其意為“詞典可以告訴你的第一件，也是最明顯的事情是某個詞的拼寫?！边x擇答案中的say，give和speak不合題意。

64.B

65.C

66.B解析：根據(jù)上下文，選詞不當(dāng)會造成交流中斷，因此prevent“妨礙，阻止”合乎句意。encourage“鼓勵”、offer“提供”與段意相反；destroy“毀滅”在此程度太重，不符邏輯。

67.D解析：此句為虛擬，說明世界各地互不相同

68.B詞義辨析題。

【應(yīng)試指導(dǎo)】catch接??；throw扔；beat敲打；play玩。三個小孩子應(yīng)該是互相把球扔給另一個人。

69.A

70.D解析：“command”為“命令”，“。objective”為“目標(biāo)”；“tendency”為“趨勢，傾向”；而“claim”為“要求權(quán)、權(quán)利”。只有D符合題意，故選D。

71.LifeisnotatrapsetforusbyGodsothathecancondemnusforsailing.Lifeisnotaspellingmatchwherenomatterhowmanywordsyou'vegottenright.You'redisqualifiedifyoumakeonemistake.Lifeismorelikeabaseballseasonwhereeventhebestteamlosesonethirdofitsgamesandeventheworstteamhasitsdaysofbrilliance.Ourgoalistowinmoregamesthanwelose.Whenweacceptthatimpressionispartofhumanbeingandwhenwecontinuerollingthroughlifeandappreciateitwe'llachievewholenessthatotherscanonlyaspireto.ThatIbelieveiswhatGodasksofus-not"beperfect"not"don'tevenmakeamistake".But"bewhole".LifeisnotatrapsetforusbyGodsothathecancondemnusforsailing.Lifeisnotaspellingmatch,wherenomatterhowmanywordsyou'vegottenright.You'redisqualifiedifyoumakeonemistake.Lifeismorelikeabaseballseason,whereeventhebestteamlosesonethirdofitsgamesandeventheworstteamhasitsdaysofbrilliance.Ourgoalistowinmoregamesthanwelose.Whenweacceptthatimpressionispartofhumanbeing,andwhenwecontinuerollingthroughlifeandappreciateit,we'llachievewholenessthatotherscanonlyaspireto.That,Ibelieve,iswhatGodasksofus-not"beperfect",not"don'tevenmakeamistake".But"bewhole".

72.正如預(yù)料的那樣，代表團給出了許多建議。

73.那女孩很像她媽媽總是樂呵呵的。那女孩很像她媽媽，總是樂呵呵的。

74.旅游業(yè)過旺也可能成為問題。如果旅游業(yè)發(fā)展過快人們必須放棄其它工作來從事旅游業(yè)。旅游業(yè)過旺也可能成為問題。如果旅游業(yè)發(fā)展過快，人們必須放棄其它工作來從事旅游業(yè)。

75.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。

76.另一個原因由于現(xiàn)代醫(yī)學(xué)的發(fā)展和生活水平的提高人們更長壽了。另一個原因，由于現(xiàn)代醫(yī)學(xué)的發(fā)展和生活水平的提高，人們更長壽了。

77.科學(xué)家們說在美國和加拿大成千上萬