2019_2020学年高中英语Unit4HelpingpeoplearoundtheworldPeriodFourProject教案.docx

Period FourProject.写出下列单词的汉语意思(共10题；每题1分，满分10分)1chaosn混乱，杂乱，紊乱2colleaguen同事3muddyadj.多泥的，泥泞的mudn泥，泥浆4dampadj.潮湿的5bacterian(pl.) 细菌6sheltern住所；藏身之处7staffn全体员工8barriern障碍，隔阂；屏障，障碍物9interpretern口译工作者，口译译员interpretv诠释，说明；口译10anglen角度.写出下列汉语对应的英语单词(共15题；每题2分，满分30分)11commitmentn承诺，保证；投入，奉献；不得不做的事commitv承诺；投入；犯(错误)12assistantn助理，助手adj.助理的，副的assistv协助13vacantadj.空着的，未被占用的；(职位)空缺的14crowdn人群vi.&vt.挤满，塞满，使拥挤crowdedadj.拥挤的15remindvt.提醒，使想起16alternativeadj.可供替代的n可供选择的事物17remoteadj.偏远的，偏僻的18possessionn个人财产；拥有，具有possessvt.拥有，具有19meansn手段，方法20primitiveadj.原始的21obtainvt.(尤指经努力)获得；赢得22heatingn供暖；供暖系统，暖气设备23welln井，水井24containern容器；集装箱25troublesomeadj.麻烦的，讨厌的，棘手的.写出下列短语或短语对应的汉语意思(共10题；每题2分，满分20分)26inchaos处于混乱状态27inamess杂乱不堪28putonweight发胖29getholdof得到；抓住30thinkbackto回想31fromplacetoplace从一地到另一地32remindsomebodyof让某人想起33findout查明，弄清(情况)34belimitedtodoingsth.被限制在做某事上35makeadifference有作用(关系、影响).完成句子(共5题；每题8分，满分40分)36Arrivedheretofindeverythingwasinchaos.来到这里后发现一切都是乱糟糟的。37Runningfromoneplacetoanotherbecameawayoflife.辗转奔波成了一种生活方式。38.thereismudandwatereverywhere，makingitdifficulttotravelfromplacetoplace.到处都是泥浆和水，因此从一个地方转移到另一个地方非常艰难。39Oneofthehealthproblemsisthatpeoplewhoneedtotakemedicinesregularlycannotgetholdoftheminadisastersuchasthis.有关健康的难题之一是：那些需要定期服药的病人遇到这样的灾难后无法得到药品。40Itseemsthatmanypeopleherejustneedtotalk，soIamfindingthatmyjobisnotlimitedtobeinganurse.在这里，很多人似乎只是需要交谈，所以，我发现我的工作并不局限于做一名护士了。匹配左边的单词与右边的汉语意思第一组1commitmentA空着的，未被占用的；(职位)空缺的2chaosB同事3colleagueC承诺，保证；投入，奉献；不得不做的事4assistantD助理，助手；助理的，副的5vacantE混乱，杂乱，紊乱答案1.C2.E3.B4.D5.A第二组6muddyA潮湿的7dampB细菌8bacteriaC住所；藏身之处9shelterD多泥的，泥泞的10crowdE挤满，塞满，使拥挤；人群答案6.D7.A8.B9.C10.E第三组11remindA口译工作者，口译译员12staffB障碍，隔阂；屏障，障碍物13barrierC角度14interpreterD全体员工15angleE提醒，使想起答案11.E12.D13.B14.A15.CTrue(T)orFalse(F)1Thereisnotmuchworktodo，soshecanwriteherdiaryeveryday.(F)2Thetownisinruins，butfortunatelythehospitalremainsingoodconditionandusable.(F)3Beforeworkinginthisisland，shehasneverworkedinpoorareas.(F)4Therearealtogetherfivepeopleonthemedicalteam：twodoctors，onenurseandtwoassistants.(T)5Sheworriedthatmalnutritionwouldbeaprobleminthefuturebecausethefieldsandharvesthadbeendestroyed.(T)1Theauthorarrivedattheislandtofindeverythingwas.AinorderBinchaosCindangerDingoodcondition答案B2WhileinSudan，theauthorandtheothermembersofthemedicalteamgavechildrenshotstostopthemdyingfromdiseasesin.AcitiesBvillagesCschoolsDhospitals答案B3WhentheauthorthinksbacktowhatshehasdonesincejoiningDoctorswithoutBorders，shefeels.AnervousBsorryCluckyDsurprised答案C4WhichofthefollowingisWRONGaccordingtothepassage?ASeveralDoctorswithoutBordersstaffwereattackedinSudanwhenpeopletriedtogetthefood.BThewatermakesitdifficultforthecutsandwoundstogetbetter.CTheauthorisproudthatshecanmakeadifferencetopeopleslives.DTheauthorcantspeakEnglishorFrench.答案DAfterreadingthepassage，pleasefillinthefollowingblanks.ConditionsoftheislandThewholeislandis1.flooded.Manypeoplehave2.fledtothemountainstoescape.Thehospitalisbadlydamagedandina3.mess.Thewatermakesitdifficultforthecutsandwoundstogetbetterandeasyfor4.bacteriatospread.Thecitylacks5.shelter，medicine，foodandcleanwater.Thefieldsand6.harvesthavebeendestroyed.Good thingsManypeoplecanspeakEnglishor7.French.8.Foodhasstartedtoarrive.Medical9.suppliesareontheirwayfromabroad.The10.clinicwillbeopen.重点词汇Changingtheworldmycommitment改变世界我的义务commitmentn承诺，保证；投入，奉献；不得不做的事make a commitment to do sth.答应做某事commit v犯(错误、罪行)；承诺，保证commit a crime犯罪commit suicide自杀commit oneself to (doing) sth.答应(做)某事(1)Onehundredpercentcommitmenttoyourstudieswillleavepreciousmarksonyouryouth.对你的学习的百分之百的投入会给你的青春留下珍贵的印记。(2)Nomatterwhatdifficultyyouwillmeetwith，carryoutyourcommitment.不管你会遇到什么困难，都要履行承诺。(3)Shedidntwanttocommitherselftodoing(do) thework.她不愿对做那项工作作任何承诺。单项填空(4)Whenwewereatschool，wemadeatoworktogetherinthefuture，buthebrokehispromiselater.AcommitmentBcontributionCpresentationDconsequence答案A解析句意为：当我们在学校时，我们承诺将来一起工作。但后来他违背了诺言。commitment承诺；contribution贡献；presentation报告；consequence结果。Oneofthehealthproblemsisthatpeoplewhoneedtotakemedicinesregularlycannotgetholdoftheminadisastersuchasthis.有关健康的难题之一是：那些需要定期服药的病人遇到这样的灾难后无法得到药品。getholdof得到；抓住catch hold of抓住；拿着；握住；占有keep hold of握紧take hold of握住；控制住，吸引have a hold over/on .对有影响(1)Getholdoftheropeoryouwillfall.抓住绳子，否则你会掉下去的。(2)Catchholdofitwhentheopportunitycomes，oryoullregretlater.当机遇来临时，抓住它，否则你将后悔。(3)Themusictookholdofthechildrenwhowereplayinghappily.这音乐吸引了那些正在快乐玩耍的孩子们。(4)Shetriedtokeepholdofthechildshand.她尽力握紧那个孩子的手。单项填空(5)Asagrassrootssinger，shereadseverythingshecanconcerningmusic，andtakeseveryopportunitytoimproveherself.AcatchsightofBgetholdofCtakechargeofDmakementionof答案B解析句意为：作为一名草根歌手，她读了她能够找到的一切与音乐有关的东西，并且抓住一切机会提高自己。getholdof找到，得到，抓住，符合句意。catchsightof看见；takechargeof负责；makementionof提到。Meanwhile，intherestofthecity，shelterandaccesstofoodandcleanwaterarebigproblems.与此同时，在这座城市的其他地区，住所、食物和干净饮用水的供给都成了大问题。sheltern住所，藏身之处；庇护，避难处v庇护，躲避take/seek shelter from躲避under the shelter of在的庇护下give shelter to庇护shelter.from.保护免受(1)Itook/soughtshelteratabusstopfromtherainlastnight.昨晚我在公共汽车站躲雨。(2)Undertheshelterofatent，acrowdgatheredforalunch.在帐篷的庇护下，一群人聚在一起吃午餐。单项填空(3)Someparentsarejusttooprotective.Theywanttotheirkidsfromeverykindofdanger，realorimagined.AspotBdismissCshelterDdistinguish答案C解析dismisssb.fromsth.解雇某人，开除某人；sheltersb.fromsth.保护某人免受；distinguish.from.把与区别开来；spot看见，发现，不与from连用。根据句意可知选C项。Thismorning，therewerefightsascrowdsofpeopletriedtogetfood.今天上午，几群人由于争抢食品发生了好几次打斗。crowdnC人群vi.&vt.挤满，塞满，使拥挤a crowd of/crowds of一大群，很多crowd into挤进crowded adj.拥挤的be crowded with挤满了(1)Bythetimetheambulancearrived，acrowdofonlookershadgathered.当救护车赶到时，一大群旁观者聚在一起。(2)Weallcrowdedintoherofficetosing“HappyBirthdaytoYou”我们全都涌进她的办公室，唱“祝你生日快乐”歌。(3)ItwastwoweeksbeforeChristmasandthemallwascrowdedwithshoppers.离圣诞节还有两个星期，商场里就挤满了购物者。语境串记(4)Thecrowdcrowdedintothecrowdedtownhall.民众涌入了拥挤的市政大厅。ItremindedmeofmytimeinSudan，whereseveralDoctorswithoutBordersstaffwereattackedaspeopletriedtogetthefood.这使我想起了在苏丹的那段时间，当时人们哄抢食物，有好几名“无国界医生组织”的工作人员受到了攻击。remindvt.提醒，使想起remind sb.of sth.使某人想起某事；提醒某人某事remind sb.to do sth.提醒某人做某事remind sb.that.提醒某人(1)Thepictureremindedmeofmyschooldays.这张照片使我想起了我的学生时代。(2)SheremindedmethatIhadntwateredtheflowers.她提醒我还没有浇花。(3)Passengersarereminded(remind) thatnosmokingisallowedonthistrain.乘客们被提醒在这列火车上不准抽烟。(4)Remindmetobuy(buy) somemilktonight.提醒我今天晚上买点牛奶。单项填空(5)Itoldyoutobringadictionarywithyoubeforeschoolwasover.Iamsorry，butthismorningIwasinsuchahurrythatIforgotofthat.AtoremindBbeingremindedCtoberemindedDreminding答案B解析forgetdoingsth.表示“忘了曾做过某事”，很明显“提醒”已发生，故用动名词形式，而且remind和I之间是逻辑上的动宾关系，故用动名词的被动语态。IknowIcantchangethewholeworld，butImproudthatIcanhelphereandthere，andmakeadifferencetopeopleslives.我知道我无法改变整个世界，但我很自豪，因为我能在各处帮忙，改变人们的生活。makeadifference有作用(关系、影响)make a difference (to sb./sth.)(对)有作用(关系、影响)make no/little/much/some difference (to sb./sth.)(对)没有/几乎没有/有很大/有些影响make all the difference (to sb./sth.)(对)关系重大，大不相同tell the difference between A and B区分A和B的不同(1)Itswhatyoudotodaythatwillmakeadifferencetoyourlifetomorrow.你今天做的事情会对你明天的生活产生很大的影响。(2)Itmakesnodifferencetomewhetherhecomeshereornot.他来不来这儿对我没有影响。写作佳句(3)Onefalsestepwillmakeagreatdifference.(谚)失之毫厘，谬以千里。单项填空(4)Theboyisoldenoughtothedifferencerightandwrong.Aspeak；fromBtell；betweenCsay；ofDjudge；from答案B解析句意为：这个男孩已经长大了，能够辨别是非了。tellthedifferencebetweenAandB说出A和B的不同。经典句式Instead of sand blowing everywhere，there is mud and water everywhere，making it difficult to travel from place to place.这里没有随处飞扬的沙尘，但到处都是泥浆和水，因此从一个地方转移到另一个地方非常艰难。making it difficult to travel为“make宾语宾语补足语to do”的形式，即make的复合结构；it是形式宾语，后边的不定式短语是真正的宾语。英语中有些动词，如：find，feel，think，make等后面可跟复合结构，在这种复合结构中，真正的宾语可以是不定式或that从句等，而it作形式宾语。(1)Hemadeitaruletocheckhishomeworkcarefullybeforehandingitin.他养成了把家庭作业仔细检查一遍才上交的习惯。(2)IthinkitimportanttolearnEnglishwell.我觉得学好英语是很重要的。(3)Doyouthinkitnecessarythattheyshouldsendmorepeopleoverthere?你认为他们有必要派更多的人去那儿吗？单项填空(4)Susanmadecleartomethatshewishedtomakeanewlifeforherself.AthatBthisCitDher答案C解析此题考查it作形式宾语，常用于make，find，like，hate等动词之后，真正的宾语为后面的“thatshewishedto.herself”。.单词拼写1Ifyoucannotmakeacommitment(承诺) forthislengthoftimethenthepuppyisnotforyou.2Theteachersaidthathewouldliketochooseanassistant(助手) amongus.3Hedoesnotknowwhattodowithhisvacant(空闲的) time.4Wedrovealongamuddy(泥泞的) lanetoreachthefarmhouse.5Thegovernmentprovidesthemwithnotonlyfoodandshelter(避难所)，butalsothebasicskillsfortheirliving.6Theavenuesoftheareawerecrowded(拥挤的) withvisitors.7AteverymomentIwasreminded(提醒) ofthedifficultieswehad.8Staff(全体员工) areencouragedtousethelibraryforprofessionalselfdevelopment.9Theygotusedtothestrangelifeandsoonovercamethelanguagebarrier(障碍)10Heisagenerousmanandcanalwaysgetonwellwithhiscolleagues(同事).选词填空11WhenIthinkbacktomydaysintheremotevillage，Ifeelwarm.12Thephotosoftenremindhimofthegoldenyearsofhislife.13Itwillmakeadifferencetomewhatyousayaboutmyperformance.14WherecanIgetholdofsomestamps?15ManyGermanartistsfledtoAmericaatthebeginningofWorldWar.完成句子16Hethinksithisdutytohelpothers.他认为帮助别人是他的职责。17Hehurriedtotheairport，onlytobetoldthatthefilmstarhadleft.他匆忙地赶到机场，却被告知那位电影明星已经离开了。18Dontmissthechancetorealizeyourdream.不要错过这个可以实现你的梦想的机会。19RemindmetophonemymotherbeforeIgoout.提醒我在出去之前给我妈妈打电话。20Shehasbeenabsentagain，asisexpected.正如预料的那样，她再次缺席。基础巩固.单句语法填空1Whenhefellintotheriverhegotholdofalogandclimbedup.2Besuretoremindhertocome(come) backearly.3Therearethreecandidatesforthevacancy(vacant)4Footballisplayedinmorethan160countries，making(make) itpopularallovertheworld.5Thepresidenthascommittedhimself(he) toreforminghealthcare.6Shopswerecrowdedwithcustomerslookingoverthecolourfuldisplays.7Imakeitaruletotakeashortwalkaftersupper.8Aftertheearthquake，theareawasinchaos：noelectricity，roadsblocked，injuredpeopleeverywhere.9Yoursupportwillcertainlymakeadifferencetoourcause.10Theywalkedalongamuddy(mud) roadandtherewasalotofmudontheroad.单项填空11Thehousepriceisdecreasing，butIstillfeellikerentingone.OK！Thathouseisstillandyoucantrytocallup.AconvenientBvacantCfreeDhandy答案B解析答句句意为：好的！那座房子仍然空着，你可以打电话试一试。vacant空的，未被占用的，符合题意。convenient方便的，便利的；free自由的；handy手边的。12Yourdeskiscrowdedtoomanyunnecessarythings.Youhavetoremovesomeofthem.AatBinConDwith答案D解析句意为：你的桌子上放满了太多不必要的东西，你得移走一些。becrowdedwith挤满了，为固定短语。13DonaldTrump，thenewlyelectedUSpresident，madeatothenationthathewouldstrivetolowertaxesandimprovehealthcareaftertakingoffice.AcontributionBcommitmentCdevotionDdonation答案B解析句意为：美国新当选总统唐纳德特朗普向国民承诺，就职后他将尽力减税并提高医疗水平。makeacommitmentto对作出承诺。故选B项。14nottodriveafterdrinking，somedriversarestilltryingtheirluck，whichisreallydangerous.ABeingremindedBToremindCHavingremindedDReminded答案D解析句意为：尽管被提醒不要酒后开车，一些司机仍然心存侥幸，这十分危险。remind和其逻辑主语somedrivers是动宾关系，也就是说，司机是被提醒的。故选D项。15Whydontyoutrytodoexercisetoloseweight?Ihavetriedeverythingbutithasmadelittle.AuseBresultCconclusionDdifference答案D解析makelittledifference意为“几乎不起作用”，符合语境。16Thoughthesuspectrefusedtoadmitthathehadstolenthepreciousdiamondatfirst，heandadmittedeverythingwhenhewasshownthevideotape.AbrokeoffBbrokeawayCbrokedownDbrokeinto答案C解析句意为：尽管犯罪嫌疑人一开始拒绝承认偷了这颗贵重的钻石，但当他看到监控录像时他精神崩溃并承认了一切。breakdown (健康、精神)垮掉，符合句意。breakoff中止，中断；breakaway强行逃脱；breakinto闯入。17IwasreadingTheRomanceoftheThreeKingdomsyesterday，butIcouldntunderstandit.Itisclassicalliterature，sotakeyourtimetoenjoyit.ADontflyoffthehandleBDontbeoverthemoonCMorehaste，lessspeedDYougotmethere答案C解析Dontflyoffthehandle别冲动，别生气；Dontbeoverthemoon不要太高兴；Morehaste，lessspeed欲速则不达；Yougotmethere你把我难住了。由语境“我一直在读三国演义，但是却读不懂”，及空后的回答“这是古典文学，所以你要慢慢欣赏”可知，此处选C最合适。18Thechildrenwenthappilytothepark，onlythatmostofthescenicspotswerebeingrepairedandcouldntbevisited.AtofindBfoundCfindingDtobefound答案A解析句意为：孩子们高高兴兴地去了公园，结果却发现大部分的景点正在被维修而不能参观。不定式短语onlytodo作结果状语时常表示出乎意料的结果。19Usuallythereisaspeedof30km/hintownsorvillages.AlevelBstandardClimitDdegree答案C解析句意为：通常在城镇或乡村的时速限制为每小时30公里。aspeedlimit限速，符合题意。20ThepicturesusofthedayswespentinBeijing.Aremember；thatBwarn；whenCremind；whenDremind；that答案D解析句意为：这些照片使我们想起了在北京度过的日子。第一个空考查固定短语remindsb.ofsth.使某人想起某事；第二个空考查定语从句引导词，先行词是days，从句中缺少宾语，所以用关系代词that。故选D。能力提升.完形填空TherewasnobodyontheparkbenchasIsatdowntoreadunderthelongbranchesofanoldwillowtree.Iwas21withlife，fortheworldalwaysletmedown.Atthattime，ayoungboyoutofbreathwalked22me，tiredofplay.Hestoodrightbeforemeandsaid23，“LookwhatIfound！”Inhishandwasaflower，andwhata24sight，withitspetals(花瓣) allfalling.Wantinghimtotakehis25flowerandgoofftoplay，Igavehimasmallsmileandthen26away.However，insteadofgoingaway，hesatnexttomysideandplacedtheflowertohis27andsaidwithsurprise，“Itsuresmellsprettyanditsbeautiful，too.Thats28Ipickedit；here，itsforyou.”Theflowerbeforemewasdyingordead.ButIknewImusttakeit，orhemightneverleave.SoI29theflower，andreplied，“JustwhatIneed.”Butinsteadofplacingtheflowerinmy30，hehelditmidairwithoutreasonorplan.ItwasthenthatI31fortheveryfirsttime，thatboycouldnotsee：hewas32.Iheardmy33quiver(颤抖)，andtearsshonelikethesunasIthankedhimforpickingthevery34one.“Yourewelcome，”hesmiled，andthenranofftoplay，unawareoftheinfluencehedhad35me.Isatthereandwonderedhowhe36toseeaselfpityingwomanunderanoldwillowtree.Howdidheknowofmydifficultsituation? Perhapsfromhisheart，hedhad37sight.Throughthe38ofablindchild，atlastIcouldsee，theproblemwasnotwiththe39；theproblemwasme.AndforallofthosetimesImyselfhadbeenblind，butnowIwasgoingtoseebeauty，and40everysecondthatsmine.21A.contentBdisappointedCsatisfiedDangry答案B解析根据下文中的“fortheworldalwaysletmedown”可知，作者对人生很“失望”。22A.aroundBawayfromCafterDtowards答案D解析根据下文中的“Hestoodrightbeforeme”可知，小男孩是朝作者走来。walktowards朝走来。23A.excitedlyBunhappilyCangrilyDpainfully答案A解析男孩所说的“LookwhatIfound！”透露出了兴奋之情，故此处选excitedly。24A.beautifulBinterestingCcolorfulDpitiful答案D解析由下半句“withitspetals(花瓣) allfalling”可知，此处选pitiful，意为“可怜的，令人同情的”。25A.deadBlivelyCbeautifulDbrightly答案A解析此处选dead，与上文“withitspetals(花瓣) allfalling”和第五段首句“Theflowerbeforemewasdyingordead.”呼应。26A.wentBturnedCwalkedDput答案B解析作者想打发小男孩离开，向他微微笑了笑，然后转过脸去不想再搭理他。turnaway意为“转过脸去”，符合文意。由下文中的“insteadofgoingaway，hesatnexttomyside”可知，作者并没有起身离开，故可排除went和walked。27A.mouthBearCnoseDeye答案C解析由下文男孩所说的“Itsuresmellspretty”可知，小男孩把花凑近鼻子来闻，故此题选nose。28A.whatBwhereCwhenDwhy答案D解析此句中的That指代上文“Itsuresmellsprettyanditsbeautiful，too.”，这句话所表达的内容是小男孩摘这朵花的原因，故此题选why。29A.acceptedBdestroyedCreceivedDrefused答案A解析根据上文中的“ButIknewImusttakeit，orhemightneverleave.”可知，作者应该是“接受”了这朵花，故此题选accepted。30A.legBbenchChandDside答案C解析送给别人花应该是把花放到对方手里，故此题选hand。place.inoneshand意为“把放到某人手里”。31A.spokeBnoticedClistenedDsaid答案B解析这里表达的意思是“就在那时，我第一次注意到(notice)那个男孩看不见东西”。该句是强调句，强调的部分是时间状语then。32A.cleverBhappyCblindDsad答案C解析由上文中的“thatboycouldnotsee”可知，应该选blind，下文最后一段也反复出现了这个词。33A.soundBtuneCnoiseDvoice答案D解析由下文中的“Ithankedhimfor.”可知，作者向男孩表达了感激之情，听到的应该是自己说话时颤抖的声音，故本题选voice。34A.bestBfirstCstrangeDbad答案A解析此题选best，这里用副词very修饰最高级，起强调作用。35A.toBinConDwith答案C解析此处考查固定短语haveinfluenceonsb.对某人有影响。此句中包含一个定语从句，influence被前置充当先行词，作从句谓语动词had的宾语。36A.wantedBmanagedCfailedDthought答案B解析由上文可知，这个男孩是个盲人，所以作者对男孩是如何发现她这个在柳树下自怨自艾的女人的感到惊讶。managetodosth.表示“设法成功做某事”，符合语境，故本题选managed。37A.trueBkindChappyDsure答案A解析此句是对上句的自问自答，或许，在他内心里有真正的光明。38A.earsBmouthCnoseDeyes答案D解析句意为：通过那个双目失明的孩子的眼睛，我终于明白，问题不在这个世界，而在于自己。由下文中的“atlastIcouldsee”可知此处选eyes。39A.tearBpeopleCworldDflower答案C解析根据第一段中的“fortheworldalwaysletmedown”可知这里应选world，与其形成首尾呼应。40A.hateBenjoyCwasteDplay答案B解析句意为：通过这件事，我发誓要发现生活中的美好，好好享受自己的每分每秒。根据上文“seebeauty”可知此处选B项。.阅读理解Anewstudysaysonepartofthehumanbrainmaybecomesmallerasaresultofaconditionknownasjetlag(时差)Jetlagresultsfromflyinglongdistancesinanairplane.Jetlaginterfereswithapersonsnormaltimesforsleepingandwaking.Peoplewithjetlagmayfeelextremelytiredforseveraldays.Theyalsomayhaveproblemsthinkingclearlyandremembering.KwangwookChoisaresearcherattheUniversityofBristolinBritain.HereportedthefindingsofhisjetlagstudyinthepublicationNatureNeuroscience.Thestudyinvolvedtwentyyoungwomenwhoworkedforinternationalairlines.Thewomenhadservedpassengersonairplanesforfiveyears.Theseflightattendantsflewacrossmanycountriesandatleastseventimezones.Inthestudy，theflightattendantshaddifferentamountsoftimetorecoverfromjetlag.Halfthewomenspentfivedaysorfewerintheirhomeareasbetweenlongflights.Theotherhalfspentmorethanfourteendaysintheirhomeareas.MisterChotooksomefluidfromthewomensmouthstomeasurelevelsofahormonethatincreasesduringstress.Hetestedthemtoseeiftheycouldrememberwhereblackspotsappearedonacomputerscreen.Andhetookpicturesoftheirbrainsusingmagneticresonanceimaging.Thisisawaytomeasurethesizeofthebrainstemporallobes.Itwasfoundthatthewomenwhohadlesstimebetweenflightshadsmallerrighttemporallobes.Thisareaofthebraindealswithrecognizingandrememberingwhatisseen.Thesamegroupperformedworseandhadslowerreactiontimesonthevisualmemorytest.Andtheirsalivasamplesshowedhigherlevelsofstresshormones.MisterChosayshebelievesthebrainneedsatleasttendaystorecoverafteralongtrip.Hesaysairlinewor