Unit 2 Sports and Fitness单元综合检测（含解析）高中英语北师大版（2019）必修 第一册

单元综合检测(二)(UNIT2SPORTSANDFITNESS)(总分：120分)第一部分阅读(共两节，满分50分)第一节(共15小题；每小题2.5分，满分37.5分)阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。ADoyouhaveanytravelplansinthenearfuture？Orareyoulookingforthesafestplacetotravel？Ifyouranswerisyes，thistravelguidewillprovidesomeplacesyoucanvisit．Inthisguide，wewilldiscusstheirculture，food，andotherthingsyoushouldexpect．NewZealandNewZealandhasproventobetheworld'ssafestplacetotravelafterIcelandanditisknownforitswonderfuldishessuchasFishandChips，HokeyPokeyicecream，etc．WhangareiFallsisa26.3-metrehighwaterfallwithabeautifulviewthatmakesitoneofthemostphotogenicwaterfalls．BelizeAvisittoBelizewouldgiveyouexperiencessuchasworld-classdiving，explorationsofjungles，etc．WhenyouareinBelize，youshouldtrythefollowingfood：RiceandBeans，Tamales，StewedChicken，FryJacksandalotmore．BelizeisknownforMayanruinsandcavesandjungleadventures，anditisalsoknownas“MotherNature'sBestKeptSecret”．GreenlandGreenlandissaidtobeaplacewhereyoudonothavetoworryaboutcrime，soyouneednotworrytoomuchaboutyoursafety．ItislocatedbetweentheArcticandAtlanticoceans，anditistheworld'slargestisland．MajortouristoffersinGreenlandincludetripsonhiking，toursondogsledding，watchingicebergs，etc．TunisiaTunisiaissaidtobeoneofthemostvisitedAfricancountries．SomeattractiveplacesincludeitsgreatcapitalcityTunis，thebeachresortsofMahdiaandKasbahSquareinTunis．Tunisiaispopularforitsbeacheswhichhavepocket-friendlyitems．Tunisiansarealwayswillingtohelp．SomeofthedeliciousdishesthatTunisiansenjoyincludeTabounaBread，TajineMaadnous，TunisianMeatDishes，etc．1．WhatcanvisitorsenjoyinNewZealand?A．Mayanruins．B．Goldenbeaches．C．Thebeautifulwaterfall．D．Jungleadventures．2．Whichplaceshouldyougotoifyouarefondofdiving?A．NewZealand． B．Tunisia．C．Greenland． D．Belize．3．WhatcanbeknownaboutTunisia?A．Tunisiansarebothwarmandfriendly．B．It'sfamousforitsdeliciousdishes．C．Tunisistheworld'slargestportcity．D．Itoffersfirst-classhikingexperiences．BLastSeptemberanAmericanstartedatripthroughSouthwestChinaonastandardbikeshehadboughtatalocalshop．Inthreemonths，JenniferHolsteincycled2，500kilometresthroughthreeprovinceswithjusttwosmallbags．LivinginBeijing，herlifewasalreadygreat．ButHolsteinfelttheurgetotraveltheworldandlookforadventure．Itwasmid-Augustof2021thattheideacametohertotravelChinabybicycle．Atthattime，Holsteinhadnevercycledformorethan20kilometresaroundherlocalcityofBeijing．Holsteinsharedanexperiencefromthebeginningofhertripwhenshefoundherselfstuckinatunnel(隧道)withaflattire．Itwasdarkandhot，andshewassoscaredbecauseshehadneverchangedatirebefore．Suddenly，agroupofcyclistsoldenoughtobehergrandparentscameandrescuedher．InadditiontoreceivingthekindnessofpeopleacrossChina，Holsteinalsoexperiencedseveraluniqueculturalexperiencesbyattendingthreelocalweddings．Shespokeaboutoneweddingindetail，“IwasinthemiddleofasmallvillageinSichuanProvince，andIwastakenintoalocalTibetanfamily'shomeandtheyinvitedmetotakepartinawedding．Theygavemeadressandevendidmymake-up．IneverthoughtIwouldeverhavethechancetotakepartinaTibetanwedding．”AccordingtoHolstein，“Manypeoplewanttotraveltheworldandtakehugerisks，butneverdo．Don'tjustliveyourlifehopingyourwildestdreamwillbecomearealitysomeday．Tryfirstandtherestwillworkitselfout．”Inadditiontobikingforherownpassionandcuriosity，Holsteinalsolinkedherridetoraise22，000yuanfortheUnitedFoundationforChina'sHealth．4．WhydidJenniferHolsteindecidetotravelbybicycle?A．HerlifeinBeijingwasdull．B．Herfriendsencouragedhertogo．C．Shewaspushedbyaninnerdesire．D．Shewasanexperiencedbiketraveller．5．HowdidthecycliststreatJenniferHolsteininthetunnel?A．Theycalledanoldmantohelpher．B．Theyhelpedherfixthetireproblem．C．Theyignoredherandmovedforwards．D．Theythoughtthemselvestoooldtohelpher．6．WhatcanbeinferredfromJenniferHolstein'swordsinparagraph4?A．ShewasfondofattendingTibetanweddings．B．Shewasabitannoyedatthewedding'sdetails．C．Shewasforcedtotakepartinthelocalwedding．D．Shewasgratefulforsuchanunexpectedopportunity．7．What'sthemainideaofthetext?A．Lendingahelpinghandtotheneedy．B．Enjoyingthepleasureoftravel．C．Discoveringtheunknownonabicycle．D．HavingauniqueculturalexperienceinChina．CDoyouwanttogotoplaysomebasketballinbetweenhittingthebooks?Doctorsarestartingtofindmoreandmoreinformationthatsuggestsaconnectionbetweenexerciseandbraindevelopment．JudyCameron，ascientistatOregonHealthandScienceUniversity，studiesbraindevelopment．Accordingtoherresearch，itseemsthatexercisecanmakebloodvessels(血管)，includingthoseinthebrain，strongerandmorefullydeveloped．Dr．Cameronissurethatthisallowspeoplewhoexercisetothinkbetter．Asshesays,“Whilewealreadyknowthatexerciseisgoodfortheheart，exercisecanactuallycausephysicalchangesinthebrain．”Theeffectsofexerciseonbraindevelopmentcanevenbeseeninbabies．Babieswhooftendoactivitiesshowgreaterbraindevelopmentthanbabieswhoarelessphysicallyactive．Evenalittlemovementcanshowbigresults．MargaretBarnes，ascientist，alsobelievesintheimportanceofexercise．Shethinksthatmanylearningdisabilitiesthatchildrenhaveinprimaryschoolorhighschoolcanresultfromalackofmovementasbabies．Olderpeoplecandeveloptheirbrainsaswell．CornellUniversitystudiedagroupofseniorswhohaveashort-termmemoryincreaseofupto40percentafterexercisingjustthreehoursaweek．Also，exerciseforolderpeopleshouldnotbetoosimple．Learningsomenewskillsoractions，suchaswithyogaortaichi，helpstoopenupmemorypathsinthebrainthatmaynothavebeenusedforalongtime．Formostpeople，anytypeofphysicalactivitythatincreasestheheartrateishelpful．Themainaimistoincreasethebrain'sflowofblood．Andyourbraincanbenefitfromaslittleastwotothreehoursofexerciseaweek．8．Whatisthemainideaofthistext?A．Howtoexerciseeveryweek．B．Howexercisemakespeoplestrong．C．Howexercisehelpsthebraindevelop．D．Howthebraincanchangeone'smemory．9．Accordingtothetext，whatistheconnectionbetweenexerciseandbraindevelopment?A．Exercisehelpssoftenourbloodvessels．B．Physicalexercisehelpsusthinkbetter．C．Thebrainneedsspecialmentalexercise．D．Themoreexercise，thebiggerthebrain．10．Whyisyogasuggestedforseniors?A．Becauseitcanbedoneingroups．B．Becauseitdoesgoodtothebonesofoldpeople．C．Becauseitdoesnotincreasetheheartrate．D．Becauseithelpslearnnewskills．11．Whyisthephysicalactivitythatincreasestheheartrateuseful?A．Becauseitcanimprovethebrain'sflowofblood．B．Becauseitcanslowdownthebrain'sflowofblood．C．Becauseitcanchangeolderpeople'smoodforthebetter．D．Becauseitcanmakeseniorsforgetpreviousterriblethings．DWhenyouralarmclockringsandyoudragyourselfoutofbed，youprobablywonder：Whyonearthdoesschoolhavetostartsoearly?Fortunately，thereisanewlawtosupport—orbetterstill，science．AlawinCalifornia，passedonOct．13，requiresthatpublicmiddleschoolsbeginclassesnoearlierthan8：00amandthathighschoolsstartnoearlierthan8：30amThelawwillgointoeffectbyJuly1．Startingschoolat8：00or8：30inthemorningmaynotsoundliketoobigofachange，butitcouldmeanonemorehourofsleepforstudentswhousedtostartschoolat7：30orevenearlier．“Theeffectofthatonehourissomethingtheywillbefeelingas40-year-oldadults，”SumitBhargava，asleepexpertatStanfordUniversity，toldTheNewYorkTimes．Hesaidthatnothavingenoughsleepcanaffectstudents'mentalhealthandincreasetheriskofbeingoverweightanddiabetes(糖尿病)．Intheshortrun，students'schoolperformancesshouldimprovealmostimmediately．KylaWahlstrom，aresearcherattheUniversityofMinnesota'sCollegeofEducation，foundthatstudentswhohaveenoughsleeparemorealertinclassandgetmuchmoresatisfyinggrades．Somemightsaythataskingstudentstogotobedearliercouldhavebeenamucheasiersolutionthanchangingtheschooltimetableacrossanentirestate．ButaccordingtotheAmericanAcademyofSleepMedicine，teenagersgothroughbiologicalchangeswhentheyenterpuberty(青春期)，whichmakesitdifficultforthemtofallasleepbefore11：00pm．Sowhenschoolstartsat8：00orearlier，theycanhardlygettheideal8.5－9.5hoursofsleepthatexpertssuggesttheyneedtodotheirbestinthedaytime．Thisiswhywhenthenewlawcameout，itsauthor，AnthonyPortantino，said，“Generationsofchildrenwillcometoappreciatethishistoricdayandthankourgovernorfortakingaction．”12．WhichofthefollowingisTRUEaboutthelaw?A．Thelawhasnotbeenputintopractice．B．Thelawrequiresschoolstostartlaterthan8：30am．C．ThelawwillbepassedbyJuly1．D．ThelawismadebyauniversityinCalifornia．13．Whatdoestheunderlinedword“alert”inparagraph6probablymean?A．Friendly． B．Sharp．C．Calm． D．Honest．14．Forabetteracademicperformanceinthedaytime，howlongdoteenagersprobablyneedtosleep?A．About7hours．B．About9hours．C．Atleast10hours．D．Atmost8.5hours．15．What'sthemainideaofthetext?A．Lackofsleepcouldleadtohealthproblems．B．Theamountofsleeppeopleneedchangeswithage．C．Anewlawletsstudentssleeplonger．D．Sleepingproblemsareleadingproblemsforteenagers．第二节(共5小题；每小题2.5分，满分12.5分)阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。Takingexerciseisaphysical，mentalandsocialadventure．It'sagreatwayforchildrentotakeabreakfromstudyandreleaseextraenergy．Italsohelpsthemleadfullerandhappierlivesasregularsportshaveproventoimprovegeneralwell-being．16Regardlessofyourfitnesslevelwhenyoustartplayingsports，you'llnoticeanincreaseinyouroverallfitnessonceyoutakepart．Nearlyeverysportrequiresphysicalactivitiesandtheskillsneededtobecompetitive．Basketballplayersfocusonstrengthtraining．17Thetrainingprocesshelpsencouragephysicalfitnessandperformancesincompetitions．18Playingsportscontributestomentalhealth，helpingtoincreaseconfidenceandself-worth．Apatontheback，highfivefromateammate，orhandshakeafteramatchreallyraisesachild'sconfidence．Wordsofpraiseandencouragementfromthecoach，parentsandotherplayersraisetheself-worth．19Soafteragame，it'sabetterideatoask“Didyouenjoythegame？”ratherthan“Didyouwin？”Childrenwhoparticipateinsportsmightalsobenefitfromthesocialaspect，feelingpartofagroup，buildingupleadershipandresponsibility．20Teamworkdemandsbothbeingdependableasateammateandlearningtorelyonyourteammatestoachieveapositiveoutcome．Teamworkwillraiseyourresponsibilityandgiveyouanopportunitytobealeader．Thereisnoshortageofreasonstofindasporttotakepartin．Areyoureadytogo？Pickoneandgetmoving!A．It'snotjustyourbodythatbenefitsfromsports．B．Therefore，playingsportsisgoingtomakeyoumorefit．C．Footballplayersworkonspeedwhiletrackathletestrainthroughlongerruns．D．Amongthese，learninghowtoworkasateamisthemostimportantadvantage．E．Butremember，achild'sself-worthshouldnotbejudgedbyvictoryorloss．F．Ifyouplaygroupsports，you'llbepartofateamthattakesdirectionfromacoach．G．Thephysicalbenefitsofdoingsportsareprobablythemostobvious．第二部分语言运用(共两节，满分30分)第一节(共15小题；每小题1分，满分15分)阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项。Asateenager，Ihatedsportsandphysicaleducationclasses．Iwasalwaysmakingup21togetoutofthem．However，whenIstarteduniversity，Idecidedto22kungfu．Tomy23，Ilovedit．Itwasafriendlyclub．Iusedtogotwoorthreetimesaweekto24．Becauseitisnotateamsport，Ididn'tfeel__25__aboutnotbeingverygood．Andbecauseitisacombat(格斗)sport，youtraininpairs，whichmeansthatyougetto__26__peopleandtalktothem．Ialso27thatthefocusoftheclasseswasongettingbetteratkungfu，ratherthanexercisingto28mybody．WhenIwasdoingkungfu，mybodydidchange—Igot29andquicker—butmoreimportantly，thesportbenefitedmealotinmanyways．30，inthelastyearofuniversityIwastoobusytodokungfumostofthetime．WhenImovedtoItalythisyearIwantedto31doingacombatsportagain．Ifoundagreatlocal32thatdoesmixedmartialarts(武术)．Theclubis33thantheoneatmyuniversitybecausewecandolotsofgoodpracticefights．Ithinkthatthepracticeislikechess，butmuchfasterandmuchmorefun!WhenIwasateenager，Inever34thatIwouldlikesports．NowIthinkthateveryoneshouldtryasmany35aspossiblebecauseIbelievethereissomethingoutthereforeveryone!21．A．purposesB．excusesC．suggestions D．goals22．A．perform B．buildC．spread D．try23．A．surprise B．disappointmentC．worry D．sadness24．A．work B．competeC．train D．relax25．A．tired B．comfortableC．easy D．terrible26．A．meet B．admireC．show D．hug27．A．disliked B．appreciatedC．doubted D．struggled28．A．examine B．loseC．change D．feel29．A．smaller B．youngerC．heavier D．stronger30．A．Naturally B．FinallyC．Obviously D．Unfortunately31．A．start B．hateC．avoid D．end32．A．gym B．clubC．school D．university33．A．cheaper B．worseC．better D．crazier34．A．remembered B．imaginedC．requested D．explained35．A．patterns B．projectsC．sports D．hobbies第二节(共10小题；每小题1.5分，满分15分)阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。Alittlegirl'sdaywasturnedinto36．________unforgettableoneaftershefoundasweetnoteforastrangerinasupermarket．Thegirlwaswanderingthroughthesupermarketwithherdadwhenshe37．________(come)acrosswhatshethoughtwasalostobject．Butitsoonbecameclearthatitwasagiftgiventothepersonwhofoundit．Hiddenamongthe38．________(shelf)waswhatappearedtobeasmall，hand-knitteditem，withanoteattachedtoit．Itread，“Iamsogladthatyouseeme．Iamnotlost．Actually，Iamwaiting39．________you．”Thegirl'sdadwroteabouttheunexpectedfindonacommunitysocialmediapage，on40．________hecalledthestrangerthebestkindofhumanbeing．Postingaphotoofthepresent，hewrote，“Mydaughterfoundthisinasupermarkettoday．Thebestisthatapersontries41．________(he)besttomakeanothersmile．Ifeelgratefultotheperson．After42．________(get)thegift，mylittlegirlsaidshealsowanted43．________(be)thatkindofperson．”Sinceitwasposted，thepicture44．________(share)hundredsoftimes，receivingcommentsfromalotoflocalswhosaidtheyhadalsobeen45．________(extreme)happytofindgiftslikethisaroundtown．第三部分写作(共两节，满分40分)第一节(满分15分)假如你是李华，3月25日，星期天，你们班参加了一次校外环境卫生清洁活动。请用英语写一篇日记，记录这次活动，内容包括：1．活动目的；2．活动内容；3．个人感受。注意：1．可以适当增加细节，以使行文连贯、完整；2．词数80左右。_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________第二节(满分25分)阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。Arthurwasagoodboydoinghisbesttogrowintoagoodman．Arthur'sbestfriendwasKyle．Ifyoucouldn'tfindArthur，allyouhadtodowaslookforKyle．Afewyearsago，Arthur'sfatherwasasuccessfulbusinessman．Butthingswentverywrongwhenhisdad'sbusinessfailed．ThetwoboysmetwhenArthurhadtoleavehisexpensiveprivateschool，whichhisfamilycouldnolongerafford，andgotoapublicschool．Arthur'smumworkedinthelocalbakeryandbroughthomeboxesofbakedgoods．JustlikeArthur's，Kyle'sfamilystruggled．TheylivedonafarmwheretheycouldnotworkanylongerbecauseKyle'sdadwastoosick，andhisgrandmotherwastooold．Kyle'smumworkedinthelaundryandstillmanagedtogrowvegetablesforthefamily．Thetwofamilieshelpedeachother．ArthurgaveKyle'sfamilytheextradeliciousbakedgoods，andKyle'smumgavehimbasketsofcarrots，potatoes，andtomatoesfromthefarm．ThingstookaturnfortheworsewhenKyle's84-year-oldgrandmotherwasseriouslyillandhadtogotothehospital．Kyleandhisfamilywereunderstandablyupset，butworseofallwerethehospitalbills．Fortunately，shesurvived．Oneafternoon，ArthurfoundpoorKyleintears．“What'sthematter，Kyle？”heasked．Hisfriendwipedhistears．“Nothing，nothingatall！”hesaid．Arthurhadhisdoubts，buthedidn'tpressKyle．“Well，then，”hesaid．“Ihavegoodnewsforyou！Myauntsentme$50，andmymumsaidIcouldspenditonanythingIwanted！”“WOW！Doesthatmean...”Arthursmiled．“YES！”heshouted．“ThatmeansI'mbuyingtherobot！”“Whenareyougoingtobuyit？”“Maybethisweekend，”Arthursaid．“Now，howaboutyoutellmewhat'swrong？”“Grandmotheristurningeighty-fivenextweek，andIwantedtogetheranewalbum(相册)fortheoldfamilyphotos．Shelovespagingthroughit，rememberingandtellingstories．Iaskedmydad，buthesaiditwastooexpensive．”Arthurdidn'tsayaword．Hesatdownnexttohisfriendand...注意：1．续写词数应为150左右；2．请按如下格式作答。Thatnight，Arthuraskedhismumtojoinhissecretplan．____________________________________________________________________________________________________________________________________________________________Thegrandmotheropenedthepresent．______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________单元综合检测(二)123456789101112CDACBDCCBDAA131415161718192021222324BBCGCAEDBDAC2526272829303132333435DABCDDABCBC36．an37．came38．shelves39．for40．which41．his42．getting43．tobe44．hasbeenshared45．extremely第三部分第一节[参考范文]Sunday，March25FineTodayourclasswentouttodosomecleaning，toraisestudents'awarenessofenvironmentalprotection．Westartedoutearlyinthemorning．Onarrivingattheplace，weweredividedintoseveralgroups．Somecollectedtherubbishinthepark，someclearedtheoldpostersoffthewalls，andotherssweptthestreet．Someofuswenttothepublicplacesandkeptontellingpeoplenottodestroythebeautyofnaturesothatwecanhaveacleanerworld．Somepeoplehavenoawareoftheimportanceofprotectingtheenvironmentatpresent．Ithinksuchactivitiesarenecessaryandinstructive．第二节[参考范文]Thatnight，Arthuraskedhismumtojoinhissecretplan．Andshehappilyagreed．OnKyle'sgrandmother'sbirthday，ArthurandhismumknockedonKyle'sdoor．Arthurwascarryingabigpresent-wrappedboxandsomebeautifulflowers，andhismumhadahugebeautifulbirthdaycake！WhenKyleandhisfamilysawthem，theycouldn'tbelievetheireyes！“Kyle，”Arthursaid．“Quick，askyourgrandmothertoblowoutthecandlesandopenthepresentbox！”Whenthegrandmotherwalkedoutofherroomwithdifficulty，shewasamazed!Thegrandmotheropenedthepresent．Itwasabeautifulphotoalbumwiththegrandmother'snameonthecover．KyleknewthenthatArthurhadspenteverycentofthemoneyhisaunthadsenthimonhisgrandmother'sgift．Thegrandmotherstartedcrying．“Thankyou，ArthurandKyle，howdidyouknowthisiswhatIwantedmost？”KylestartedhugginghisgrandmotherandthankedArthur，saying，“Youdidreallywantthatrobot！”Kyle'sgrannywasawisewoman．Sheguessedwhathappened．【语篇解读】本文是一篇应用文。文章主要介绍了几个适合参观的地方，包括这些地方的文化、食物等。1．C[细节理解题。根据NewZealand部分“WhangareiFallsisa26.3-metrehighwaterfallwithabeautifulviewthatmakesitoneofthemostphotogenicwaterfalls．”可知，在新西兰，游客可以看到漂亮的瀑布。故选C。]2．D[细节理解题。根据Belize部分中的“AvisittoBelizewouldgiveyouexperiencessuchasworld-classdiving，explorationsofjungles，etc．”可知，如果游客爱好潜水，可以去Belize。故选D。]3．A[细节理解题。根据Tunisia部分中的“Tunisiansarealwayswillingtohelp．”可知，突尼斯人热情友好。故选A。]【语篇解读】本文是一篇记叙文。文章讲述了一名美国女性孤身一人在中国西南地区骑行2500公里时得到的帮助和体验到的沿途的文化。4．C[细节理解题。根据第二段中的“LivinginBeijing，herlifewasalreadygreat．ButHolsteinfelttheurgetotraveltheworldandlookforadventure．Itwasmid-Augustof2021thattheideacametohertotravelChinabybicycle．”可知，本在北京生活舒适的JenniferHolstein在2021年8月中旬突然产生了独自骑行中国并探索未知和挑战自我的想法，所以她是被内心的欲望所驱使。故选C。]5．B[细节理解题。根据第三段“Suddenly，agroupofcyclistsoldenoughtobehergrandparentscameandrescuedher．”可知，在JenniferHolstein自行车突然爆胎困在隧道里之后，一群年纪足够当她祖父母的自行车手刚好路过，帮助了她。故选B。]6．D[推理判断题。根据第四段中的“Holsteinalsoexperiencedseveraluniqueculturalexperiencesbyattendingthreelocalweddings...IneverthoughtIwouldeverhavethechancetotakepartinaTibetanwedding．’”可知，JenniferHolstein讲述了她骑行过程中，经过四川一个村庄时被邀请参加一个藏族婚礼的具体细节。当地藏民家庭细致地为她做了参加婚礼的相关准备，她利用这个难得的机会体验了当地独特的文化和习俗，由此推断出她很感激。故选D。]7．C[主旨大意题。通读全文，本文讲述了一名决定挑战自我和探索未知的美国女性在中国西南地区独自骑行2500公里时所得到的热情帮助和体验到的沿途独特的文化。选项C通过提炼文章关键词的方式更好地概括了文章主旨。故选C。]【语篇解读】本文是一篇说明文。文章主要介绍了运动可以帮助大脑发育，并且这种现象可以在婴儿身上看到，此外，老年人也可以通过锻炼发展他们的大脑。8．C[推理判断题。根据第一段“Doyouwanttogotoplaysomebasketball...aconnectionbetweenexerciseandbraindevelopment．”并结合全文可知，文章主要介绍了运动可以帮助大脑发育，并且这种现象可以在婴儿身上看到，此外，老年人也可以通过锻炼发展他们的大脑。因此这篇文章的主旨应是运动如何帮助大脑发育。故选C。]9．B[细节理解题。根据第二段中“Dr．Cameronissurethatthisallowspeoplewhoexercisetothinkbetter．”可知，锻炼有助于我们更好地思考。故选B。]10．D[细节理解题。根据最后一段中“Learningsomenewskillsoractions...helpstoopenupmemorypathsinthebrainthatmaynothavebeenusedforalongtime．”可知，建议老年人做瑜伽是因为瑜伽有助于大脑记忆力的开发，即有助于帮助学习新的东西。故选D。]11．A[细节理解题。根据最后一段中“Formostpeople...istoincreasethebrain'sflowofblood．”可知，通过体育活动提高心率是有用的，因为它可以改善大脑的血液流动。故选A。]【语篇解读】本文是一篇说明文。文章主要讲述了即将要出台一部新法律能让青少年有足够的睡眠时间以保证白天的学业成绩。12．A[细节理解题。根据第三段中的“ThelawwillgointoeffectbyJuly1．(这部法律将于7月1日生效。)”可知，这部法律还没有付诸实践。故选A。]13．B[词义猜测题。根据第六段中的“KylaWahlstrom，aresearcherattheUniversityofMinnesota'sCollegeofEducation，foundthatstudentswhohaveenoughsleeparealertinclassandgetmuchmoresatisfyinggrades．”可知，KylaWahlstrom，明尼苏达大学的一名研究人员发现有充足睡眠的人成绩更令人满意。由此可推断，学生们在课堂上表现得也更好，思维更敏捷，故推断alert为“敏捷的”，sharp同为“敏捷的，灵敏的”。故选B。]14．B[细节理解题。根据倒数第二段中的“Sowhenschoolstartsat8：00orearlier，theycanhardlygettheideal8.5－9.5hoursofsleepthatexpertssuggesttheyneedtodotheirbestinthedaytime．”可知，要想在白天有一个更好的学业成绩，青少年需要大约9小时的睡眠时间。故选B。]15．C[主旨大意题。本文主要讲述了即将要出台一部新法律能让青少年有足够的睡眠时间以保证白天的学业成绩。C选项能概括文章大意和中心思想。故选C。]【语篇解读】本文是一篇说明文。本文主要讲述了运动的好处。16．G[根据下文内容“Regardlessofyourfitnesslevelwhenyoustartplayingsports，you'llnoticeanincreaseinyouroverallfitnessonceyoutakepart．”可知，本段主要讲的是“运动对身体的好处”。故选G。]17．C[根据上文“Nearlyeverysportrequiresphysicalactivitiesandtheskillsneededtobecompetitive．Basketballplayersfocusonstrengthtraining．”可知，此处列举不同的运动项目训练的侧重点不同。故选C。]18．A[根据下文“Playingsportscontributestomentalhealth...”可知，运动不仅仅有益于身体，同时也有益于精神健康。故选A。]19．E[根据下文“Soafteragame，it'sab