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Unit8单元测试题Writtentestpart(共95分)Ⅴ.单项选择（每小题1分，共15分）从A、B、C、D四个选项中选择可以填入空白处的最佳答案。()21.—I'dlovetodosomethingdifferentthisw

eekend,Pam.—Allright.Whatabout_____picnic?A.aB.anC.theD.不填()22.Ridingabikeisakindofsportthatusesmuch_____,butitkeepspeopleh

ealthy.A.troubleB.stressC.energyD.support()23.Is_____availablenow?Mrs.Taylorneedssomehelp.A.somebodyB.anyb

odyC.everybodyD.nobody()24.Hollywasvery_____.Shetriedtokeephereyesopenbutshecouldn't.A.seriousB.crazyC.sleepyD.creative()2

5.—_____glovesarethese?—TheycouldbeSam's.A.WhoseB.WhatC.WhichD.Howmany()26.Mother'sDayiscoming.Couldyoupleasetellmesomewaysto_____mythanks

tomymother?A.translateB.expressC.repeatD.spread()27.ItwasSunday._____Marcusdidn'tneedtogotoschool,hedidn'tgetupuntil9a.m.A.UnlessB.WhenC.ThoughD.As(

)28.Thedictionary_____beSue's.Isawhernameonthefrontpageofthedictionary.A.wouldB.mustC.mayD.could()29.—IsthatMs.Jones'car?—It_____behers.S

hehasjustgoneforameetinginhercar.A.maynotB.shouldn'tC.can'tD.mustn't()30.TsinghuaUniversitywassetupin1911.Ithasbecomeoneof_____universitiesinthewor

ld.A.morefamousB.themorefamousC.mostfamousD.themostfamous()31.Listen!Doyouhearsomeone_____forhelp?A.callingB.callC.tocal

lD.called()32.Wehadgreatfun_____tothecountrysideyesterdayafternoon.A.todriveB.driveC.drivingD.todriving()33.Peopleinthatcountryusespoonsorch

opstickstoeat.Anditisimpolitetousebothofthem_____.A.atthattimeB.atthesametimeC.forthefirsttimeD.fromtimetotime()34.Looka

tthatbighouseoverthere!Itissaidit_____anoldwoman.A.belongstoB.isbelongedtoC.isbelongingtoD.wasbelongedto(

)35.—Youlooksoangry._____?—Lookatmyhair.I'mjustnothappyaboutthewayhecutmyhair.A.IsthatclearB.IsthereanythingelseC.Wha

t'swrongD.WhynotⅥ.完形填空（每小题1分，共10分）先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。TaosisasmalltowninNewMexico,USA.Manypeople

comehereforavisiteveryyear.Theydonotcometoseethebeautifulscenes(景色)36eatdeliciousfood.Theycometolistentoakindof37sound:theTaosHum.Theword

“hum”meansalowsoundthatneverstops.38isthesoundstrange?Firstly,theTaosHumthatpeoplehearisquite39.Someones

aysitsoundslikealittlebeeflyingaroundyou.Othersthinkitsoundslikeacarmovinginafaraway(遥远的)place.Secondly,40knowswherethesoundcomesfrom.JoeMullins

,ascientistfromtheUniversityofNewMexico,isoneofthefirstpersonstodo41onthehum.Heputsomeinstrumentsinplaceswherepeoplecouldhearthehum

,butthoseinstrumentscouldn't“hear”anyhum!Otherswhowantedtofindthehumfailed,too.Manypeopletryto42thatstrangesoun

d.Someonesaysitisanoisemadebyinsects.Someonebelievesitmustcomefromsomesecretprojects.Someonesaysthere43beanundergroundUFObas

e!Butnooneissurewhichisright.Itmightbeinterestingfor44tolistentothehum,butitisnotforpeoplewholiveinthetown.The

yhavetohearthesound45.Thatisreallyahardlife.()36.A.butB.ifC.soD.or()37.A.terribleB.strangeC.sweetD.musical()38.A.WhenB.HowC.

WhyD.What()39.A.differentB.similarC.lowD.high()40.A.nobodyB.everybodyC.anybodyD.somebody()41.A.discussionB.businessC.inventionD.research()42.A.recei

veB.produceC.explainD.carry()43.A.mightB.wouldC.needD.shall()44.A.teachersB.astronautsC.patientsD.visitors()45.A.anot

hertimeB.ontimeC.allthetimeD.onceuponatimeⅦ.情景交际（每小题1分，共5分）根据对话内容，从方框中选择恰当的选项补全对话，其中有两项多余。A:Excuseme,Molly.Isthispinkcoatyours?B:No,itisn't

.(46)______ItmightbeJulie's.Shelikespink.A:Itcan'tbehers.(47)______B:Howdoyouknowthat?A:(48)______B:Isee.Let'sseewhat'sinthepocketofthecoat.Wow,

here'sahairband.A:(49)______Karenhaslonghairandpinkisherfavoritecolor.B:Oh,there'resomecandiesintheotherpocket.A:Thenitmust

beKaren's.(50)______B:Yes,you'reright.Let'sgoandaskher.A.Icametoschoolwithherthismorning.B.ItmightbeKaren's.C.Yes,Iguessso

.D.Idon'thaveapinkcoat.E.Sheworeherschooluniformthismorning.F.Shelikeseatingcandiesverymuch.G.Shecan'tremember.Ⅷ.阅读理解（每小题2分，共30分）AOnS

aturdaymorning,Johngotupearlytogotoasportsclub.Onhisway,hesawthreeofhisschoolmatesatthemall,Rie,AsukaandYuki.Theywerealwaystog

etherbecausetheywereverygoodfriends.“I'mshoppingfornewshoes,”RietoldJohn.“ButIhavebigfeetsonothingfits!WehavebeenshoppingeverywherebutIcan'tfin

danybigshoes!”“Andwewalkveryslowly,”Yukisaid,“becauseofAsuka...”“Iknow,”Johnsaid,lookingatAsuka.“Iheardy

ouhurtyourkneeinP.E.classyesterday.Doesithurt?”“It'sOKifImoveveryslowly,”Asukatoldhim.“Wearegoingtoeatice-creamatDairyQueen

.Doyouwanttocome?”“Sorry,Ican't.IamgoingtomeetEdwardatthesportsclub.Seeyoulater!”saidJohn.Johnwaswalk

ingpastacoffeeshopwhenhesawMs.Kanda.Shewaslookingatanewsidewalk(人行道).AsJohncamecloserhecouldseethatMs.Kandawasangry.“Somebodyjumpedi

nthemiddleofthesidewalkwhenthecement(水泥)wasstillwet!”shesaid,pointingtotwosmallfootprints(脚印)inthenewcement.“

NowIcan'tgohomebecauseIhavetofixthesidewalk!”“Whodidit?”askedJohn.“Afirst-yearstudentovertheresaidtha

tthreegirlswerewalkingbyherejustnow.Buthedoesn'tknowwhichgirljumpedinthecement!”Threegirls?“Small”footprints?Somebody“jumped”

?“Iknowwhodid!”saidJohn.根据材料内容选择最佳答案。()51.WheredidJohnmeethisschoolmates?A.Inapark.B.Atthemall.C.Atasportsclub.D.Inanice-cream

shop.()52.WhathappenedtoAsukainyesterday'sP.E.class?A.Shehadafightwithherclassmate.B.Shehurtoneofherfeet.C.Shebrokehershoes.D.Shehurtherknee

.()53.Ms.Kandawasangrybecause______.A.someonestolehercarB.shefellinthenewcementC.shehadtofixthesidewalkD.someonedroveontheside

walk()54.Thefootprintsinthecementwere______.A.bigB.smallC.differentD.similar()55.WhomightJohnthinkjumpedinthecement?A.Rie.B.Yuki.C.Asuka.D.Edward.B

Maxreadsmorethananyoneheknows.Helovestoreadduringallofhisfreetime.Hisfriendsalwaysteasehimbecausehelikest

oreadmorethantoplayvideogames,buthisparentsandhisteachersareproudofhim.Theysayreadingisimportantanditwillhelphimlearnabouttheworldaroundhim.The

yalsotellhimreadingisagoodhabit.OnedayMaxreadamagazinearticleaboutvolcanoes(火山).Hetoldhisfriendsallaboutvolcanoesand

whatcausesthemtoerupt(爆发).Theverynextweek,hisclasswereaskedtodoascienceprojectaboutvolcanoes.Guesswhoe

veryonewantedintheirprojectgroup?Max'sfriendsweren'tteasinghimanymore.MaxendedupbeinginagroupwithLiz,AnnaandJosh.Maxbroughtthatmagazinehereadbef

oretoschool,sohisprojectpartnerscouldreadaboutvolcanoestoo.Theyalsowenttothelibrarytolookformoreinformationaboutvolcanoes.Thegroupmeta

tAnna'shousethatnighttoorganizetheinformationanddecidewhattheywantedtoputintheproject.TheyallaskedMaxwh

athethoughtwasmostimportant.ThenextnighttheymetatJosh'shousetobuildtheirmodelvolcano.Themodelvolcanoloo

kedgreat.Max,Liz,AnnaandJoshwereveryproudoftheirhardwork.Whentheygavetheirprojecttotheirteacher,theirteacherwasp

roudtoo.ThankstoMax'sreadinghabit,theygotanA+fortheirproject.根据材料内容选择最佳答案。()56.Whatdoestheunderlinedword“tease”inParagraph1meaninChinese?A.激励B.支持C.揭

发D.取笑()57.HowmanystudentswerethereinMax'sscienceprojectgroup?A.3.B.4.C.5.D.6.()58.Wheredidthegroupbuildtheirmodelvolcano?A.

Intheclassroom.B.Inthelibrary.C.AtJosh'shouse.D.AtAnna'shouse.()59.Whatdidtheteacherthinkofthegroup'sprojec

t?A.Excellent.B.Notbad.C.Neededtobeimproved.D.Terrible.()60.Whichisthebesttitleforthepassage?A.Max'sgoodhabitB.MaxandhisfriendsC.Howtodoascienceproj

ectD.WhatcausesvolcanoestoeruptCAustralia,alsoknownas“theLandDownUnder”,isacountry,anislandandacontinent(大陆).It'stheworld'ssmalles

tcontinentandthesixthlargestcountry.Butonlyabout24millionpeoplelivethere.ThefirstpeoplethereweretheAborigines(澳大利亚土著居民).Inthelate18thcenturytheBr

itisharrived.TodaytheBritishinfluenceonAustraliaisstillverystrong.Forexample,thenationallanguageisEnglishanddriversdriveon

theleftsideoftheroad.Australiawascutofffromtheothercontinentsalongtimeago,soalotofAustralia'sanimals,likethekoalaandthe

kangarooaren'tfoundanywhereelseintheworld.Australiaalsohassomeofthemostdangerousanimalsintheworld.Therearepoiso

nous(有毒的)snakesandspiders.Inthenorththerearehugesaltwatercrocodiles,andinthesea,aroundthecoast,therearesharksandpoisonousjellyfi

sh.ThelargestcityinAustraliaisSydneywithitsfamousOperaHouseandHarbourBridge.The2000SummerOlympicswereheldinSydney.ButSydneyisn'tthecapit

al(首都)ofAustralia.ThecapitalisCanberra.Australiaisahugecountry,butmostAustraliansliveinthesouth-eastcornerbetweenSydne

yandMelbourne.Thisisbecausemostofthelandisverydry.Australianscallthisdryareatheoutback.Therearesomehugefarmstherewithmillionsofsheep.Thechild

renwholiveonthesefarmscan'tgotoschool,becausethenearesttownistoofaraway.TheystudyathomewiththeSchooloftheAir.Theyusedtotalktotheir

teachersbytheradioand,nowadays,ontheInternet.Thereisalsoa“flyingdoctor”service.Thedoctorcomestotheoutbackbyplane.根据材料内容简要回答下列问题。61.What's

thepopulationofAustralia?__________________________________________62.Whatdoesthesecondparagraphmainlytellus?____________

______________________________63.IsHarbourBridgeinSydneyorCanberra?__________________________________________64.Inwh

ichpartofthecountrydomostAustralianslive?__________________________________________65.Wheredochildrenlivingintheoutbackstudy?_____

_____________________________________Ⅸ.词汇运用（每小题1分，共5分）根据句意，从方框中选择恰当的单词并用其适当形式填空。value,prevent,land,medicine,wolf66.______aredangerousanimals.They

liveonmeat.67.Briandidsomething______theaccident,buthefailed.68.Thereare100doctorsand150nursesinthe______team.69.Thereisstil

lnonewsaboutthemissingplane.Itcouldhave______insomeplace.70.Candylikesherpresentjob.Shethinksshecangetalotoffunand______

experiencefromit.Ⅹ.完成句子（每小题1分，共5分）根据汉语意思完成英语句子，每空一词。71.有时妈妈选择穿蓝色套装。SometimesMomchoosesto________________

________.72.这个新公园于8月10号开始接待游客。Thenewparkbeginsto____________on10thAugust.73.伯特一定在北京待过很长一段时间。BertmusthavestayedinBeijingfor_____________________

_________.74.老师告诉孩子们不要在教室里互相追赶。Theteachertoldthechildrennotto____________eachotherintheclassroom.75.大家都认为乔治是个工作努力的人。EveryonethinksthatGeorgei

s__________________.Ⅺ.综合填空（每小题1分，共10分）阅读短文，从方框中选择恰当的词并用其适当形式填空，使短文完整、通顺。每词限用一次，其中有两个是多余的。easy,message,good,start,divide,if,they,safe,exci

te,avoid,problem,sitThenewyearbroughtnewdesksforstudentsataschoolinCalifornia,USA.Theschool'sclassroomshaveallchanged(76)______seatedde

skstostandingdesks.“It'snowthefirstall-standingschool,”JulietStarrettsays.She(77)______thegroupStandUpKidsandwantedtohaveeveryUSpublic

schoolkidusingastandingdeskinthenext10years.Starrett'sdaughtersarebothatthatschool.Theyare(78)______abouttheirdesks.“Youfeelhappier,

you'relesstiredandyou'remoreactive,”oneofthegirlssays.Someofthedeskshavewheels.Wheelsallowthedeskstobemoved(79)______.Thedesksarealsoabletobese

tatdifferentheights.Kidstakebreaksby(80)______onthefloororonstools(凳子).MarkBendenisanexpertwhostudieshowtomakethingse

asyand(81)______touse.Accordingtohim,standingworkersaremorefocused(注意力集中的)andhealthier.ResearchersinNewZealand,Au

straliaandtheUnitedKingdomhadsimilarfindings.Butnoteveryonebelievesstandingis(82)______thansitting.Some

parentsandteachersworrythatkidswillgettiredandthatstandingforlongmaycause(83)______.Andstandingdesksaremoreex

pensive.Bendensaysbothsittingandstandingdeskscancauseproblems(84)______theyarenottheproperheight.“Our(85)_____

_shouldnotbe‘Sitless,standmore',”hesays,“but‘Sitless,movemore'.”Ⅻ.书面表达（15分）假如你叫李华，你校英文报下一期专栏的话题是“讲述一件令人难忘的事情”。请根据下面提供的开头部分

，发挥你的想象力就此话题续写该短文，然后向该专栏投稿。要求：1.文中使用情态动词表示推测的句子至少两句；2.文中应体现你由恐惧到惊喜的情感变化过程。3.词数90左右。开头部分已给出，但不计入总词数。Ihadafrighteningandexcitingexperi

encelastThursdaynight.Afterfinishingmyhomework,Iwasgoingtobed.Justthen,Iheardthesoundoffootstepsoutsi

demydoor.Iwonderedwhoitcouldbe.参考答案Ⅴ.21-25ACBCA26-30BDBCD31-35ACBACⅥ.36-40DBCAA41-45DCADCⅦ.46-50DEABFⅧ.51-55BDCBB

56-60DBCAA61.About24million.62.AnimalsinAustralia.63.It'sinSydney.64.Thesouth-eastcornerbetweenSydneyandMelbourne.65.Athome.Ⅸ.66.Wolve

s67.toprevent68.medical69.landed70.valuableⅩ.71.wearabluesuit72.receivevisitors73.alongperiodoftime74.runafter75.

ahard-workingperson/manⅪ.76.their77.started78.excited79.easily80.sitting81.safe82.better83.problems84.if85.messageⅫ.Onepossibleversion:Ih

adafrighteningandexcitingexperiencelastThursdaynight.Afterfinishingmyhomework,Iwasgoingtobed.Justthen,Iheardthesoundoffootstepsout

sidemydoor.Iwonderedwhoitcouldbe.Itcouldn'tbemyfatherormymother,becausetheyhadgonetotheirfriend'sparty.Theysaidtheywoul

dcomebackhomelate.Itcouldn'tbeathief,either.Athiefwouldfeelafraidandbeveryquiet.Perhapsitcouldbemyneighb

or.Hemayhavecomebackhomefromwork.Healwaysworkslateintheoffice.Isaidtomyself,“Bebrave!There'snothingtobeworriedabout.”ThenIo

penedthedoorandallmyfriendsweretheresaying“Happybirthday”.Ithoughtthey'dforgotten!HowexcitedIwas!部分解

析单项选择：21.A。本小题考查冠词的用法。picnic为可数名词，在此泛指“一次野餐”，因此用不定冠词；它以辅音音素开头，因此用a，故选A。22.C。本小题考查名词词义辨析。trouble意为“问题；苦恼”；stress

意为“精神压力；心里负担”；energy意为“力量”；support意为“支持”。题意：骑自行车是一项消耗体力的运动，但是它能让人健康。故选C。23.B。本小题考查代词辨析。somebody意为“有人”，一般用于肯定句中；anybody意

为“有人”时，一般用于否定句或一般疑问句中；意为“任何人”时，一般用于肯定句中；everybody意为“人人；大家”；nobody意为“没有人”。根据泰勒夫人需要一些帮助可知，前一句问“有人”有空吗，且该句为一般疑问句，故选B。24.C。本小题考查形容词词义辨析。serious意为“严肃的”；c

razy意为“疯狂的”；sleepy意为“瞌睡的”；creative意为“有创造力的”。根据“霍莉睁不开眼睛”可知，她是“瞌睡的”，故选C。25.A。本小题考查疑问词词义辨析。whose意为“谁的”；what意为“什么”；which意为“哪个”；howmany意为“多少”。

根据答语“可能是萨姆的”可知，题干上句是询问这是“谁的”手套，故选A。26.B。本小题考查动词词义辨析。translate意为“翻译”；express意为“表达”；repeat意为“重复”；spread意

为“传播”。母亲节就要到了，发话者想询问向妈妈“表达”感谢的一些方式，故选B。27.D。本小题考查从属连词辨析。unless意为“除非”，引导条件状语从句；when意为“当„„的时候”，引导时间状语从句；though意为“虽然

”，引导让步状语从句；as意为“当„„的时候”时，引导时间状语从句，意为“因为”时，引导原因状语从句。主句(马库斯直到9点才起床)与从句(马库斯不需要去上学)之间为因果关系，因此要用能引导原因状语从句的从属连词，故选D。28.B。本小题考查情态动词表示推测的用

法。would意为“将会”，表示有可能的推测；must意为“一定；准是”，表示很有把握的推测；may意为“也许；可能”，表示不确定的推测；could意为“可能”，表示不确定的推测。根据“在字典的首页我看到了休的名字”可以有把握地推测出，这本字典“一定”是休的，故选B。29.C。本小题考查情态动

词表示推测的用法。maynot意为“不大可能；可能不”，表示否定的、不确定的推测；shouldn't意为“按理不应该”，表示按常规、常理的推测；can't意为“不可能”，表示否定的、有把握的推测；mustn't意为“禁止”，不表示推测。根据“琼斯小姐刚开着她的车去开会

了”可以有把握地推测出，这辆车“不可能”是她的，故选C。30.D。本小题考查形容词的最高级。“oneofthe+形容词的最高级+名词复数”是固定结构，表示“最„„之一”，故选D。31.A。本小题考查非谓语动词。hear用作感官动词时常用于两种结构中：hearsb.dosth.表示“听见某人做某事

(全过程)”和hearsb.doingsth.表示“听见某人正在做某事”。根据Listen!可知，call这一动作正在进行，故选A。32.C。本小题考查非谓语动词。havefundoingsth.是固定结构，意为“做某事很高兴”，故选C。

33.B。本小题考查短语辨析。atthattime意为“在那时”；atthesametime意为“同时”；forthefirsttime意为“第一次”；fromtimetotime意为“时常；有时”。题意：那

个国家人们用勺子或筷子吃饭。同时使用它们是不礼貌的。34.A。本小题考查belongto的用法。belongto意为“属于；是„„的成员”，无进行时态，无被动语态，故选A。35.C。本小题考查情景交际。Isthatclear?意为“

清楚了吗？”；Isthereanythingelse?意为“还有别的吗？”；What'swrong?意为“怎么了？；出什么事了？”；Whynot?意为“为什么不？”。发话者看出对方很生气，因此询问对方“出什么事了？”，故选C。完形

填空：【体裁】说明文【话题】自然【大意】材料介绍了美国陶斯小镇上传出的一种奇怪的声音，以及人们对它的研究和猜想。36.D。由下一句中的Theycometolistentoakindof...sound可知人们来这里不是看美景“或是”吃美食。37.B。由下文中的thes

oundstrange可知他们是来听一种“奇怪的”声音。38.C。由下文罗列的两条理由可知此处是在问：这种声音“为什么”奇怪？39.A。由下两句中的soundslikealittlebee...和soundsl

ikeacar...可知人们听到的声音是“不一样的”。40.A。由下文中的thoseinstrumentscouldn't“hear”anyhum和Otherswhowantedtofindthehumfailed,too可知“没人”知道这种声音来自哪里。41.D。由下一句中的Heput

someinstrumentsinplaceswherepeoplecouldhearthehum可知他在“研究”这种声音。42.C。由下文罗列的人们对这种声音来源的各种猜想可知许多人试图对其进行“解释”。43.A。本段主要介绍了各种猜想，所以此处是指一些人说“可能”地下有不明飞行

物基地。44.D。由后半句中的but和peoplewholiveinthetown可知对于“游客”来说这种声音是有意思的。45.C。由后半句中的ahardlife可知他们(镇上的居民)不得不“一直”听着这种声音。阅读理解：A【体裁】记叙文【话题】日常活动【

大意】人行道上新铺的水泥地上出现了两个小脚印，John根据蛛丝马迹推断出了脚印的主人。51.B。本小题考查学生查找细节信息的能力。由第一段第二句可知答案。52.D。本小题考查学生查找细节信息的能力。由第四段第二

句可知答案。53.C。本小题考查学生理解具体信息的能力。由第七段Ms.Kanda说的话可知她很生气是因为有人踩了人行道上新铺的水泥，她还得去修理。54.B。本小题考查学生理解具体信息的能力。由第七段倒数第二句中的twosmallfootp

rints可知答案。55.B。本小题考查学生推理判断的能力。由第二段可知Rie的脚很大，由第四、五段可知Asuka膝盖受伤，不能跳，而文章最后给出的线索是smallfootprints和jumped，由此推断很有可能是Yuki踩了新铺的水泥。B【体裁】记叙文

【话题】个人兴趣【大意】Max很喜欢读书，因为他的这个爱好，他所在小组的科学项目取得了A+的好成绩。56.D。本小题考查学生根据上下文猜测词义的能力。由第一段第三句后半句buthisparentsandh

isteachersareproudofhim可推断Max的朋友们总是“取笑”他。57.B。本小题考查学生理解具体信息的能力。由第二段最后一句可知Max和Liz,Anna以及Josh在一个组，共4个人。58.C。本小题考查学生查找细节信息的能力。由第三段最后一句可知答案。59.A。本小题考

查学生推理判断的能力。由最后一段最后一句可知老师给了他们组A+的好成绩，因此可推断老师认为他们的项目很棒。60.A。本小题考查学生归纳文章标题的能力。材料讲述了Max的读书爱好帮他所在小组的科学项目取

得A+的好成绩的故事。A项作标题最能概括材料大意。综合填空：【体裁】说明文【话题】学校【大意】材料介绍了在美国的一所学校里所有的学生都站着上课。76.their。这所学校所有的教室都将“它们”配有座椅的课桌换成了只能站

着听讲的课桌。此处要用形容词性物主代词来修饰seateddesks。77.started。她“创办”了StandUpKids组织。动作发生在过去，所以用动词的过去式形式。78.excited。由下一句中的happier,lesstired和moreactive可知她们对新课桌感到

“兴奋不已”。79.easily。(课桌上配置的)轮子能使课桌“轻易地”移动。要用副词来修饰bemoved。80.sitting。孩子们可以“坐在”地板上或者凳子上休息。介词后面要跟动词-ing形式。81.safe。MarkBenden是一位专家，他研究如何“安全”、便捷地使用物品。82

.better。由下一句可知不是所有人都认为站着比坐着“更好”。由than可知要用比较级。83.problems。一些家长和教师担心孩子们会疲倦、长时间站立会产生“问题”。84.if。后半句(课桌的高度不合适)是前半句(坐着听和站着听都会产生

问题)的假设条件，所以用if连接。85.message。“我们”传递的“信息”不应是“少坐、多站”。