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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'dlovetodosomethingdifferentthisweekend,Pam.—Allrig

ht.Whatabout_____picnic?A.aB.anC.theD.不填()22.Ridingabikeisakindofsportthatusesmuch_____,butitkeepspeoplehealthy.

A.troubleB.stressC.energyD.support()23.Is_____availablenow?Mrs.Taylorneedssomehelp.A.somebodyB.anybodyC.everybodyD.nobody()24.Holl

ywasvery_____.Shetriedtokeephereyesopenbutshecouldn't.A.seriousB.crazyC.sleepyD.creative()25.—_____glovesarethese?—TheycouldbeSam's.A.WhoseB.Wh

atC.WhichD.Howmany()26.Mother'sDayiscoming.Couldyoupleasetellmesomewaysto_____mythankstomymother?A.trans

lateB.expressC.repeatD.spread()27.ItwasSunday._____Marcusdidn'tneedtogotoschool,hedidn'tgetupuntil9a.m.A.UnlessB.When

C.ThoughD.As()28.Thedictionary_____beSue's.Isawhernameonthefrontpageofthedictionary.A.wouldB.mustC.mayD.could()29.—IsthatMs.Jones'car

?—It_____behers.Shehasjustgoneforameetinginhercar.A.maynotB.shouldn'tC.can'tD.mustn't()30.TsinghuaUniversitywassetupin1911.Ithasbe

comeoneof_____universitiesintheworld.A.morefamousB.themorefamousC.mostfamousD.themostfamous()31.Listen!Doyouhearsomeone_____forhelp?

A.callingB.callC.tocallD.called()32.Wehadgreatfun_____tothecountrysideyesterdayafternoon.A.todriveB.driveC.drivingD.todrivin

g()33.Peopleinthatcountryusespoonsorchopstickstoeat.Anditisimpolitetousebothofthem_____.A.atthattimeB.atthesametimeC.for

thefirsttimeD.fromtimetotime()34.Lookatthatbighouseoverthere!Itissaidit_____anoldwoman.A.belongstoB.isbelongedto

C.isbelongingtoD.wasbelongedto()35.—Youlooksoangry._____?—Lookatmyhair.I'mjustnothappyaboutthewayhecutmyhair.A.IsthatclearB.Isthereanyth

ingelseC.What'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.Manypeoplecomehereforavisi

teveryyear.Theydonotcometoseethebeautifulscenes(景色)36eatdeliciousfood.Theycometolistentoakindof37sound:theTaosHum.Theword“hum”meansalowsoundthat

neverstops.38isthesoundstrange?Firstly,theTaosHumthatpeoplehearisquite39.Someonesaysitsoundslikealittlebeeflyingaro

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

tyofNewMexico,isoneofthefirstpersonstodo41onthehum.Heputsomeinstrumentsinplaceswherepeoplecouldhearthehum,butthosei

nstrumentscouldn't“hear”anyhum!Otherswhowantedtofindthehumfailed,too.Manypeopletryto42thatstrangesound.Someonesaysitisanoisemadebyinsects.Som

eonebelievesitmustcomefromsomesecretprojects.Someonesaysthere43beanundergroundUFObase!Butnooneissurewhichisright.Itmightbeinterestin

gfor44tolistentothehum,butitisnotforpeoplewholiveinthetown.Theyhavetohearthesound45.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.everybody

C.anybodyD.somebody()41.A.discussionB.businessC.inventionD.research()42.A.receiveB.produceC.explainD.carry()43.A.mightB.wouldC.needD.shall()

44.A.teachersB.astronautsC.patientsD.visitors()45.A.anothertimeB.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:Howdoyoukno

wthat?A:(48)______B:Isee.Let'sseewhat'sinthepocketofthecoat.Wow,here'sahairband.A:(49)______Karenhasl

onghairandpinkisherfavoritecolor.B:Oh,there'resomecandiesintheotherpocket.A:ThenitmustbeKaren'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）AOnSaturdaymorning,Johngotupearlytog

otoasportsclub.Onhisway,hesawthreeofhisschoolmatesatthemall,Rie,AsukaandYuki.Theywerealwaystogetherbecausetheywer

everygoodfriends.“I'mshoppingfornewshoes,”RietoldJohn.“ButIhavebigfeetsonothingfits!Wehavebeenshoppingever

ywherebutIcan'tfindanybigshoes!”“Andwewalkveryslowly,”Yukisaid,“becauseofAsuka...”“Iknow,”Johnsaid,lookingatAsu

ka.“IheardyouhurtyourkneeinP.E.classyesterday.Doesithurt?”“It'sOKifImoveveryslowly,”Asukatoldhim.“Wearegoingtoeatice-creamatDairyQueen.Do

youwanttocome?”“Sorry,Ican't.IamgoingtomeetEdwardatthesportsclub.Seeyoulater!”saidJohn.Johnwaswalkingpastaco

ffeeshopwhenhesawMs.Kanda.Shewaslookingatanewsidewalk(人行道).AsJohncamecloserhecouldseethatMs.Kandawasangry.“Somebodyjumpedinthemiddleofthesidewalkwh

enthecement(水泥)wasstillwet!”shesaid,pointingtotwosmallfootprints(脚印)inthenewcement.“NowIcan'tgohomebecauseIhavetofixthesidew

alk!”“Whodidit?”askedJohn.“Afirst-yearstudentovertheresaidthatthreegirlswerewalkingbyherejustnow.Buthedoesn'tknowwhic

hgirljumpedinthecement!”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-creamshop.()52.WhathappenedtoAsukainyesterday'sP.E

.class?A.Shehadafightwithherclassmate.B.Shehurtoneofherfeet.C.Shebrokehershoes.D.Shehurtherknee.()53.Ms.Kan

dawasangrybecause______.A.someonestolehercarB.shefellinthenewcementC.shehadtofixthesidewalkD.someonedroveonthesidewalk()54.Thefootprintsint

hecementwere______.A.bigB.smallC.differentD.similar()55.WhomightJohnthinkjumpedinthecement?A.Rie.B.Yuki.C.Asuka.D.

Edward.BMaxreadsmorethananyoneheknows.Helovestoreadduringallofhisfreetime.Hisfriendsalwaysteasehimbecausehelikes

toreadmorethantoplayvideogames,buthisparentsandhisteachersareproudofhim.Theysayreadingisimportantanditwillhelphimlearnabouttheworldaroundhim.Theya

lsotellhimreadingisagoodhabit.OnedayMaxreadamagazinearticleaboutvolcanoes(火山).Hetoldhisfriendsallaboutvolcanoesandwhatcaus

esthemtoerupt(爆发).Theverynextweek,hisclasswereaskedtodoascienceprojectaboutvolcanoes.Guesswhoeveryonewantedintheirp

rojectgroup?Max'sfriendsweren'tteasinghimanymore.MaxendedupbeinginagroupwithLiz,AnnaandJosh.Maxbroughtthatm

agazinehereadbeforetoschool,sohisprojectpartnerscouldreadaboutvolcanoestoo.Theyalsowenttothelibrarytolookformoreinformatio

naboutvolcanoes.ThegroupmetatAnna'shousethatnighttoorganizetheinformationanddecidewhattheywantedtoputintheproject.TheyallaskedMaxwhathetho

ughtwasmostimportant.ThenextnighttheymetatJosh'shousetobuildtheirmodelvolcano.Themodelvolcanolookedgreat.Max,Liz,AnnaandJoshwer

everyproudoftheirhardwork.Whentheygavetheirprojecttotheirteacher,theirteacherwasproudtoo.ThankstoMax'sreadinghabit,theygotanA+fortheirpro

ject.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'sscien

ceprojectgroup?A.3.B.4.C.5.D.6.()58.Wheredidthegroupbuildtheirmodelvolcano?A.Intheclassroom.B.Inthelibrary.C.AtJosh'

shouse.D.AtAnna'shouse.()59.Whatdidtheteacherthinkofthegroup'sproject?A.Excellent.B.Notbad.C.Neededtobeimproved.D.Terrible.()60

.Whichisthebesttitleforthepassage?A.Max'sgoodhabitB.MaxandhisfriendsC.HowtodoascienceprojectD.Whatcausesv

olcanoestoeruptCAustralia,alsoknownas“theLandDownUnder”,isacountry,anislandandacontinent(大陆).It'stheworld'ssmal

lestcontinentandthesixthlargestcountry.Butonlyabout24millionpeoplelivethere.ThefirstpeoplethereweretheAborigines(澳大利亚土著居民).I

nthelate18thcenturytheBritisharrived.TodaytheBritishinfluenceonAustraliaisstillverystrong.Forexample,thenati

onallanguageisEnglishanddriversdriveontheleftsideoftheroad.Australiawascutofffromtheothercontinentsalongtimeago,soalotofAustralia'sa

nimals,likethekoalaandthekangarooaren'tfoundanywhereelseintheworld.Australiaalsohassomeofthemostdangerousanimalsintheworld.Therearep

oisonous(有毒的)snakesandspiders.Inthenorththerearehugesaltwatercrocodiles,andinthesea,aroundthecoast,therearesharksandpoisonousjell

yfish.ThelargestcityinAustraliaisSydneywithitsfamousOperaHouseandHarbourBridge.The2000SummerOlympicswereheldinSydney.ButSydneyisn'tthecapital(首都)

ofAustralia.ThecapitalisCanberra.Australiaisahugecountry,butmostAustraliansliveinthesouth-eastcornerbetweenSydneyandMelbourn

e.Thisisbecausemostofthelandisverydry.Australianscallthisdryareatheoutback.Therearesomehugefarmstherewithmillionsofsheep.Thechildrenwholiveonthesefar

mscan'tgotoschool,becausethenearesttownistoofaraway.TheystudyathomewiththeSchooloftheAir.Theyusedtotalktotheirteachersbytheradioand,now

adays,ontheInternet.Thereisalsoa“flyingdoctor”service.Thedoctorcomestotheoutbackbyplane.根据材料内容简要回答下列问题。61.What'sthepopulationofAustralia?____

______________________________________62.Whatdoesthesecondparagraphmainlytellus?__________________________________________63.IsHarbourBri

dgeinSydneyorCanberra?__________________________________________64.InwhichpartofthecountrydomostAustralianslive?____________________________________

______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.Theyliveonmeat.67.Briandidsomething______theacciden

t,buthefailed.68.Thereare100doctorsand150nursesinthe______team.69.Thereisstillnonewsaboutthemissingplane.Itcouldhave______in

someplace.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.7

3.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。Theteachertol

dthechildrennotto____________eachotherintheclassroom.75.大家都认为乔治是个工作努力的人。EveryonethinksthatGeorgeis__________________.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,excite,avoid,problem,sitThenewye

arbroughtnewdesksforstudentsataschoolinCalifornia,USA.Theschool'sclassroomshaveallchanged(76)______seateddeskstostandingdesks.“It'snowthefirst

all-standingschool,”JulietStarrettsays.She(77)______thegroupStandUpKidsandwantedtohaveeveryUSpublicschoolkidusingastandingdeskinthenext10years.Starre

tt'sdaughtersarebothatthatschool.Theyare(78)______abouttheirdesks.“Youfeelhappier,you'relesstiredandyou'remoreactive,”oneofthegirlssay

s.Someofthedeskshavewheels.Wheelsallowthedeskstobemoved(79)______.Thedesksarealsoabletobesetatdifferentheights.Kidstakebreaksby(80)______ontheflooror

onstools(凳子).MarkBendenisanexpertwhostudieshowtomakethingseasyand(81)______touse.Accordingtohim,standingworkersaremore

focused(注意力集中的)andhealthier.ResearchersinNewZealand,AustraliaandtheUnitedKingdomhadsimilarfindings.Butnoteveryonebelievesstandingis(82)

______thansitting.Someparentsandteachersworrythatkidswillgettiredandthatstandingforlongmaycause(83)______.Andstandingdesksaremoreexpensive.Bende

nsaysbothsittingandstandingdeskscancauseproblems(84)______theyarenottheproperheight.“Our(85)______shouldnot

be‘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。Ihadafrighteningandexcitingexperience

lastThursdaynight.Afterfinishingmyhomework,Iwasgoingtobed.Justthen,Iheardthesoundoffootstepsoutsidemydoor.Iwond

eredwhoitcouldbe.参考答案Ⅴ.21-25ACBCA26-30BDBCD31-35ACBACⅥ.36-40DBCAA41-45DCADCⅦ.46-50DEABFⅧ.51-55BDCBB56-60DBCAA61.Abou

t24million.62.AnimalsinAustralia.63.It'sinSydney.64.Thesouth-eastcornerbetweenSydneyandMelbourne.65.Athome.Ⅸ.66.Wolves67.toprevent68.medi

cal69.landed70.valuableⅩ.71.wearabluesuit72.receivevisitors73.alongperiodoftime74.runafter75.ahard-wor

kingperson/manⅪ.76.their77.started78.excited79.easily80.sitting81.safe82.better83.problems84.if85.messageⅫ.Onepossibleversion:Ihadafrigh

teningandexcitingexperiencelastThursdaynight.Afterfinishingmyhomework,Iwasgoingtobed.Justthen,Iheardthesoundoffootstepsoutsidemydoor

.Iwonderedwhoitcouldbe.Itcouldn'tbemyfatherormymother,becausetheyhadgonetotheirfriend'sparty.Theysaidtheywouldcomebackhomelate.Itcouldn'tbeathief,

either.Athiefwouldfeelafraidandbeveryquiet.Perhapsitcouldbemyneighbor.Hemayhavecomebackhomefromwork.Healwaysworkslateintheoffi

ce.Isaidtomyself,“Bebrave!There'snothingtobeworriedabout.”ThenIopenedthedoorandallmyfriendsweretheresaying“Happybirthday”.Ithoughtthey'dforgotten!Ho

wexcitedIwas!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”；craz

y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；a

s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。w

ould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。3

1.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”；fort

hefirsttime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thesoundstrange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soundslikeacar...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Heputsomeinstrumentsinplaceswherepeoplecouldhearthehum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twosmallfootprints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buthisparentsandhisteachersareproudofhim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moreac

tive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。M

arkBenden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.i

f。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”。