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已知x,y满足:,则目标函数z=3x+y的最大值为( )
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高一下学期数学《》真题及答案
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设变量xy满足约束条件则目标函数z=|x+3y|的最大值为
4
6
8
10
已知实数x.y满足条件则目标函数z=3x+y的最大值为___
已知xy满足约束条件1求目标函数z=2x+y的最大值和最小值;2求目标函数z=2x-y的最大值和最小
已知变量xy满足条件若目标函数z=ax+y其中a>0仅在点30处取得最大值则a的取值范围是_____
已知变量xy满足约束条件若目标函数z=ax+y其中a>0仅在点30处取得最大值则a的取值范围为.
已知实数xy满足约束条件若目标函数z=x+y的最大值为4则实数a的值为.
已知xy满足则目标函数z=2x-y的最大值为________.
已知变量xy满足约束条件则目标函数z=3x-y的最大值是
已知实数xy满足条件若目标函数z=2x+y的最小值为3则其最大值为.
已知xy满足约束条件1求目标函数z=2x+y的最大值和最小值2若目标函数z=ax+y取得最大值的最优
已知变量xy满足约束条件1≤x+y≤4-2≤x-y≤2.若目标函数z=ax+y其中a>0仅在点31处
求二元函数fxy=x3+y3-3xy在区域D=xy|0≤x≤2-1≤y≤2上的最大值与最小值
已知实数xy满足若目标函数Z=ax+y的最大值为3a+9最小值为3a-3则实数a的取值范围是
{a|-1≤a≤1}
{a|a≤-1}
{a|a≤-1或a≥1}
{a|a≥1}
设变量xy满足约束条件其中a>1若目标函数z=x+y的最大值为4则a的值为________.
设xy满足约束条件则目标函数z=3x-y的最大值为.
设变量xy满足约束条件则目标函数z=4x+2y的最大值为
12
10
8
2
.设变量xy满足约束条件则目标函数z=2x+3y+1的最大值为__________.
已知实数xy满足线性约束条件x+y-4≥0目标函数为z=y-axa∈R若z2x-y-5≤0取最大值时
设变量xy满足约束条件则目标函数z=x2+y2的最大值为________.
若实数xy满足约束条件则目标函数z=2x+3y的最大值为
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Theregularuseoftextmessagesande﹣mailscanlowertheIQmorethantwiceasmuchassmokingmarijuana大麻.Thatisthestatementofresearcherswhohavefoundthattappingawayonamobilephoneorcomputerkeypadorcheckingforelectronicmessagestemporarilyknocksupto10pointsofftheuser'sIQ.Thisrateofdeclineinintelligencecomparesunfavorablywiththefour﹣pointdropinIQassociatedwithsmokingmarijuanaaccordingtoBritishresearcherswhohavedescribedthephenomenonofimprovedstupidityasinfomania.TheresearchconductedbyHewlettPackardthetechnologycompanyhasconcludedthatitismainlyaproblemforadultworkersespeciallymen. Itisconcludedthattoomuchuseofmoderntechnologycandamageaperson'smind.Itcancauseaconstantdistractionofalwaysontechnologywhenemployeesshouldbeconcentratingonwhattheyarepaidtodo.Infomaniameansthattheyloseconcentrationastheirmindsremainfixedinanalmostpermanentstateofreadinesstoreacttotechnologyinsteadoffocusingonthetaskinhand.Thereportalsoaddedthatinalongtermthebrainwillbeconsiderablyshapedbywhatwedotoitandbytheexperienceofdailylife.Atamicrocellularlevelthecomplexnetworksofnervecellsthatmakeuppartsofthebrainactuallychangeinresponsetocertainexperiences. Toomuchuseofmoderntechnologycanbedamagingnotonlytoaperson'smindbuttotheirsocialrelationship.1100adultswereinterviewedduringtheresearch.Morethan62percentofthemadmittedthattheywereaddictedtocheckingtheire﹣mailsandtextmessagessooftenthattheyscrutinizedwork﹣relatedonesevenwhenathomeoronholiday.Halfsaidthattheyalwaysrespondedimmediatelytoanemailandwilleveninterruptameetingtodoso.Itisconcludedthatinfomaniaisincreasingstressandanxietyandaffectingone'scharacteristics.Nineoutoftenthoughtthatcolleagueswhoanswerede﹣mailsormessagesduringaface﹣to﹣facemeetingwereextremelyrude. TheeffectsonIQwerestudiedbyDrGlennWilsonapsychologistatUniversityofLondon.Thisisaveryrealandwidespreadphenomenonhesaid.Wehavefoundthatinfomaniawilldamageaworker'sperformancebyreducingtheirmentalsharpnessandchangingtheirsociallife.Companiesshouldencourageamorebalancedandappropriatewayofworking. 1Wecanlearnfromthepassagethatinfomania. A.hasapositiveinfluenceonone'sIQ B.resultsinthechangeofpartofthebrain C.liesintheproblemoflackofconcentration D.iscausedbytoomuchuseofmoderntechnology 2Theresearchmentionedinthepassageismostprobablyabout. A.theimportantfunctionofadvancedtechnology B.thedamagetoone'sbraindonebyunhealthyhabits C.therelevancebetweenIQanduseofmoderntechnology D.therelationshipbetweenintelligenceandworkingeffectiveness 3Theunderlinedwordscrutinizedprobablymeans. A.copiedpatiently B.correctedquickly C.answeredhurriedly D.examinedcarefully 4Whatisthemainideaofthispassage? A.Moderntechnologycandamageaperson'smind. B.Electronicmessageshavesideeffectsontheuser'slife. C.Theregularuseoftextmessagesande﹣mailscanharmyourIQ. D.Theregularuseoftextmessagesande﹣mailscanbecomparedtosmokingmarijuana.
We'vehearditbefore﹣﹣﹣we'vehearditonthenewsfromteachersfromparents﹣childrenandteenagerstodayaregrowinguptoofast.Therearenottoomanypeoplethatwill1Bwiththatstatement.Teenagersarefacedwithseriousproblemsanddecisionsatanearly2A.Infactmostteenagers'dailyschedulesareas3Basthoseofanadult's. IhavebeenworkingsinceIwasthirteenandalwaysin4CinwhichIwasworkingwithadults.Ihavehadtolearntothinkand5Dlikeanadulttobetakenseriously.SoIcountmyselfasonewhohasgrownuptoofast.Ijustgraduatedfromhighschoolandhaverecentlyspentsometimereflectingonthe6Aeighteenyears﹣thinkingaboutmyselfwhatIhavegainedandwhat7CIhaveyettoachieve. Weareexpectedtoworkhardgetexcellent8Bbeinagoodrelationshipandknowwhatwewanttodo9A.Thelistgoesonandon.Butthe10BisclearWeliveinasocietytodaythatis11Dourchildhood.Wenolongerhavemanyyearstobecarelessandfancy﹣free.Weareexpectedto12Dthestrictschoolrulesandtoexcel擅长ineverythingwedo. I'veknownthesethingsforalongtimeandknewthatthey13Cme.ButIneverreallyadmittedituntillastnightwhenIlearneda14AlessontaughttomebymybosswhereIwork.Wehadfinishedajobataremotesite.Itwasabout1130atnightandwehad15Ctohishouse.Weweretalkingaboutthe16Bhehadbeenmakingtohishome.OneofthethingshesaidwasI17Bmybasketballhoop圈.Thenhethrewabasketballtome. Ihadn't18Dabasketballinfiveyears. Weproceededtoshoothoopsforabout40minutes.Bothofuswereterriblybadatitbutwespentthewholetime19Alikechildren.ThenIrealizedsomethingIamstillachild.OhthelawsaysI'manadult.Butwearestillreallyandtrulychildren.Weallneedtohave20Conceinawhile. 1A.argue B.disagree C.satisfy D.discuss 2A.age B.stage C.year D.grade 3A.certain B.busy C.careful D.perfect 4A.companies B.places C.positions D.offices 5A.study B.speak C.work D.act 6A.last B.other C.rest D.coming 7A.purposes B.success C.goals D.jobs 8A.textbooks B.grades C.teachers D.schools 9A.inlife B.intime C.forages D.forever 10A.information B.message C.notice D.idea 11A.ruining B.correcting C.envying D.shortening 12A.respect B.accept C.learn D.follow 13A.inspired B.disappointed C.affected D.frightened 14A.valuable B.serious C.important D.useful 15A.walked B.flownback C.goneback D.driven 16A.furniture B.improvements C.equipment D.arrangements 17A.moved B.fixed C.sold D.broke 18A.played B.caught C.kicked D.held 19A.laughing B.shouting C.running D.shooting 20A.arest B.atalk C.fun D.sports
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isdangerousforustoswimintheriveralone.A.Something B.It C.This
如图根据图象填空1点A的坐标是点B的坐标是2点C到y轴的距离是点D到x轴的距离是.
假设你叫李华你的朋友沉迷于微信WeChat而不能自拔写信向你寻求帮助请你给他回一封电子邮件.内容包括 1.表示理解和关心 2.提出具体建议. 要求 1.词数100左右2.可以适当增加细节以使行文连贯 3.格式与结尾已给出不计入总词数. DearJohn Ihopetheseideascanhelpyougetridofyouraddictionassoonaspossible.Bestwishes! Yourssincerely LiHua
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SeveralyearsagoIwasatatrainstationinAmsterdamwaitinginlinetobuyaticket.AsIstoodthereIsawayoungmanaskingpeopleformoneysothathecouldbuyhisbreakfast.Mostofthetravelerssimply1ignoretheyoungmanorgave2headirtylookyetawell﹣dressedmiddle﹣agedmanreacteddifferently.When3approachbytheyoungmanthegentlemanlooked4athimandquietlyaskedHowmuchwillyouneed?Icouldn'thear5theyoungmansaidbutwatchedasthegentlemanpulledseveral6notefromhiswalletand7calmplacedthemintheyoungman'shands. Idon'tknowwhethertheyoungmanactuallyusedthemoneyforhisbreakfastorfor8purposes.WhatIdoknowisthatIwitnessedtwodifferentreactionstothesamesituation.Isawpeoplewho9beeitherafraidorannoyed.AndthenIsawthegentlemanwhowasnotafraidandtreatedthehomelessyoungmanasthoughhewereabrother.Idecidedthenandtherethateventhoughwehavetobe10careinthisworldIwouldratherbelikethegentleman.
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TheInternationalVoluntaryServicerunsanumberofYouthExchangesthroughouttheyear.YouthExchangesgivesmallgroupsof4﹣5youngpeopletheopportunitytotakepartinvolunteeringtripsabroadforanaverageoftwoweeks.Theseyoungpeoplearejoinedby4﹣5youngpeoplefrom3﹣4othernationalitiesandareawonderfulinterculturalexperienceinasafeenvironment. ExampleYouthExchanges YouthExchange1 LocationIreland OthernationalitiesIrelandSpainItalyHungary ThemeFocusesonthetopicofcommunityreconstructionandcommunityactivities﹣exploringhowlocalissuesfacingourcommunitiesareconnectedtoglobalissues.Thegroupwillalsolearnabouttheeco﹣villageasanexampleofacommunityandtakepartinteam﹣buildingactivities. YouthExchange2 LocationFrance OthernationalitiesBulgariaItalyFrance ThemeOrganicgardening&continualliving.Thisprojectwilltakeplaceinanaturalparkwherethegroupwilltakepartingardeningactivitiesandgames/workshopsaboutcontinuousdevelopment. YouthExchange3 LocationMacedonia OthernationalitiesSerbiaTurkeyIreland ThemeFoster培养socialinclusionandmotivatepersonaldevelopmentofyoungpeoplethroughsportsandoutdooractivities.Promoteoutdooractivitiesasatooltohelpinclusionofyoungpeoplewithfeweropportunities. YouthExchange4 LocationItaly OthernationalitiesItalyBulgariaGreece ThemeAsocial﹣environmentalprojectthatintendstopromotesocialinclusionandcontinuousdevelopmentregardedasaprocessofcivilrightsandactivecitizenship.Over10daysthegroupwillparticipateinactivitiestoraiseawarenessabouttheeffectofourbehaviorontheenvironment. 1WhatdoyoufocusonwhentravelinginFrance? A.Gardeningwork B.Civilrights C.Developingsocialinclusion D.Rebuildingcommunities 2Ifyouareinterestedinprotectingtheenvironmentyoucantakepartin. A.YouthExchange1 B.YouthExchange2 C.YouthExchange3 D.YouthExchange4 3WhichnationalityareYouthExchangesmostpopularwith? A.Spain B.Italy C.Ireland D.France
Lucywantstotravel旅游theworld.
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Massmediaareveryimportanttoolsofcommunicationthrough1informationispassedtoeventhefarthestendoftheworld.They2ableustocommunicatewitheachotherby3helpustoovercomethebarriersoftimeandspace. Massmediafunctioninvarious4way.Belowarelistedthemostcommonlyseen. Firstmassmediakeepuswell5informofthehappeningsoftheworldwhichwouldotherwiseremainunknown. Secondmassmediapersuadeus6mostthroughadvertisements.AswecanseenewspapersmagazinesandTVarefilled7allkindsofcolourfulpersuasiveadvertisementswhichtemptustobuytheirproducts. Thirdmassmediagive8entertainment.Televisionandradiobroadcastingprovideuswithabigvarietyofprogrammeseveryday.Filmsbooksmagazinesetc.giveus9dayamusement. Inawordmassmedia10beallthemoreimportantinthefutureandtheirfunctionwillenormouslyexpand.Limitedbyapaceonlyafewexamplesarementionedhere.
在平面直角坐标系中画出点P3-2Q-3-2R33.
ItwasinOctober.Iwas1wanderingdownthestreetheadingintoamostgloriouslybeautifulsunset.Ihadaan2tospeaktosomeoneonthestreettosharethatbeautybutitseemedeveryonewasinahurry. Itookthenext﹣best3.QuicklyIduckedintoa4andaskedtheladybehindthecounterifshecouldcomeoutsideforjustaminute.ShelookedatmeasthoughIwerefromsomeother5.She6andthenseeminglyagainstherbetterjudgmentshemovedtowardthedoor. WhenshegotoutsideIsaidtoherJustlookatthatsunset!NobodyoutherewaslookingatitandIjusthadto7itwithsomeone. Forafewsecondswejust8.ThenIsaidGodisinhisheavenandallisrightwiththeworld.Ithankedherforcomingouttoseeit.Itfelt9tosharethebeauty. Fouryearslatermy10changedgreatly.Icametotheendofatwenty﹣yearmarriage.Iwas11andonmyownforthefirsttimeinmylife.IlivedinatrailerparkandIhadtodomy12inthecommunitylaundryroom. OnedaywhilemyclothesweregoingaroundI13amagazineandreadanarticleaboutawomanwhohadbeenin14circumstances.Shehadcometotheendofamarriagemovedtoa15communityandtheonlyjobshecouldfindwasoneshe16clothingsalesinastore. Thensomethingthathappenedtoher17everything.Shesaidawomancameintoherstoreandaskedherto18outsidetolookatasunset.ThestrangerhadsaidGodisinhisheavenandallisrightwiththeworldandshehadrealizedthe19inthatstatement.Fromthatmomentonsheturnedher20around. 1A.quickly B.aimlessly C.nervously D.carefully 2A.urge B.idea C.feeling D.chance 3A.way B.action C.decision D.route 4A.hotel B.restaurant C.store D.bank 5A.planet B.country C.place D.city 6A.regretted B.agreed C.hesitated D.refused 7A.discuss B.study C.experience D.share 8A.talked B.looked C.stood D.wondered 9A.good B.strange C.comfortable D.safe 10A.opinion B.behaviour C.role D.situation 11A.depressed B.excited C.alone D.bored 12A.work B.wash C.shopping D.clothes 13A.pickedup B.pickedout C.pickedover D.pickedoff 14A.special B.different C.favourable D.similar 15A.large B.local C.strange D.good 16A.enjoyed B.disliked C.knew D.created 17A.destroyed B.brought C.changed D.settled 18A.step B.wait C.play D.sit 19A.fact B.importance C.advantage D.truth 20A.habit B.state C.job D.life
假如英语课上老师要求同桌之间交换修改作文请你修改你同桌的以下作文.文中共有10处错误涉及单词的增加删除或修改. 增加在缺词处加一个漏词符号∧并在此符号下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错词下面划一横线并在该词下面写出修改后的词. 注意1每处错误及其修改均仅限一词 2只允许修改10处多者从第11处不计分. IcanstillrememberthedaywhenIvisitedWuzhen.IfeelrejoicedbecausetheairwascleanandfreshwhichwastotallydifferentfromthecitywhereIhadleftbehind.ItisabeautifulvillagelocatinginJiaxingZhejiangprovince.Likemanysmalltownsinthesouthernareaithasalotofsmallbridgesgoingthroughcleanstreams.Duringadaypeoplecanwalkorsitonaboattoenjoyingthenaturalsceneryalongthestream.Thesceneatnightisattractivelyaswell.Thereareallkindsofroundandsquarelight.EverytimewhenIlookedatthepicturesItookIwillrememberthewaterthebridgesandthehouses.Thewatercountrywilllongremainmydream!
LONDONReuters﹣Quietplease﹣Britain'sQueenElizabethispreparingtohaveherswanscounted. BuckinghamPalacehasannouncedthattheannualSwanUppingatraditiondatingbacktothe12thcenturywhichinvolvesacensusoftheswanpopulationontheRiverThameswillbeconductedbytheQueen'sofficialSwanMarkerfromJuly20to24. WiththeassistanceoftheQueen'sSwanWardenProfessorChristopherPerrinsoftheUniversityofOxfordtheswansandyoungcygnets小天鹅arealsoassessedforanysignsofinjuryordiseaseBuckinghamPalacesaidinannouncingthecount. TheprocessinvolvestheSwanMarkerDavidBarberrowinguptheThamesforfivedayswiththeSwanWardenintraditionalskiffswhilewearingspecialscarletuniformsandcountingweighingandmeasuringswansandcygnets. ItmayseemeccentricbutitisveryimportanttotheQueenAccordingtocustomBritain'ssovereignownsallunmarkedmuteswansinopenwaterbuttheQueennowexercisestherightonlyonstretchesoftheThamesanditsnearbytributaries. InmedievaltimestheSwanMarkerwouldnotonlytraveluptherivercountingtheswansbutwouldcatchasmanyaspossibleastheyweresoughtafterforbanquetsandfeasts. ThisyeartheSwanMarkerandtheSwanWardenareparticularlykeentodiscoverhowmuchdamageisbeingcausedtoswansandcygnetsbyattacksfromdogsandfromdiscardedfishingtackle渔具. ItisalsoanimportantyearbecauseQueenElizabethhasdecidedtojoinherteamofSwanUppersforpartofthecensus.ShewillfollowthemuptheriverandvisitalocalschoolprojectonthewholesubjectofswanscygnetsandtheThames. EducationandconservationareessentialtotheroleofSwanUppingandtheinvolvementofschoolchildrenisalwaysarewardingexperienceBuckinghamPalacesaid. 1WecaninferfromthepassagethattheprocessofcountingtheswansA. A.remainsalmostunchangedinthepastyears B.involvesalotofroyalmembers C.sometimeslastslongerthanbefore D.isalwaysguardedbyspecialsoldiers 2Whichofthefollowingisthemainideaofthepassage?B A.Britain'sQueenisconcernedaboutswans. B.Britain'sQueenordersacountofswans. C.AnoldtraditioninBuckinghamPalace. D.QueenElizabethwillcountswansherself. 3TheunderlinedwordtributariescanbebestreplacedbyD. A.districts B.banks C.trees D.branches
假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处错误每句中最多有两处.错误涉及一个单词的增加删除或修改.增加在缺词处加一个漏字符号Λ并在其下面写出该加的词.删除把多余的词用斜线\划掉.修改在错的词下划一横线并在该词下面写出修改后的词. 注意1.每处错误及其修改均仅限一词2.只允许修改10处多者从第11处起不计分. HeavysnowfellinmanypartsofChinalastwinter.Differentpeoplehavedifferentopinionsaboutsnowfallsinwinter. JustliketheoldsayinggoesAheavysnowfallinwintermeaningagoodharvestthenextyear.Somepeoplethinkthatheavysnowcankillharmfulpeststhatwillbegoodforthecrops.Besideswithsnowfallingtheaircanbecomecleanandisbeneficialforourhealth.Inadditionheavysnowcanbringlotsoffunsforbothadultsandchildren.Thereforeotherpeopledon'tthinkhighofsnowfallsbecausesnowfallsmakedifficultforpeopletogoout. AsfarasIamconcernedIprefersnowfallsinwinterbecausetheearthlooksveryniceandbeautifulwitheverythingcoveringwithsnow.
—Whatbowlofnoodleswouldyoulike?—Alargeoneplease.
WinstonChurchillisprobablythemostpopularBritishprimeministerever.HavingservedhiscountryasasoldierandpoliticianheisoftenconsideredamongthegreatestofBritons.ButwhilehisheroicstandagainsttheNazisiswellknowntherearestillafewfactsaboutthepopularpoliticianthatmightsurpriseyou. TheclassicimageofWinstonChurchillincludesagiantcigarstuckbetweenhislips.Howeverhealmostnevertookapuffpreferringtochewontheenduntilitwentoutthenrelightitandstartagain. Althoughit'ssomewhatovershadowedbyhispoliticalcareerWinstonChurchillwasanaccomplishedwriter.HewontheNobelPrizeforLiteraturein1953.HisfirstbookwasTheStoryoftheMalakandFieldForceafirst﹣handaccountofamilitarycampaigninwhatisnowPakistan.FunnilyenoughtherewasanAmericanwriternamedWinstonChurchillactiveatthesametime. InterestinglybothChurchillspublishedtheirfirstbooksin1898althoughtheAmericanChurchillwasthefirsttobecomefamousforhiswriting.Unsurprisinglyhewouldfinallybeeclipsed使黯然失__ythefameofhisBritishcounterpartandisalmostforgottentoday.Butatthetimethetwowriterswereoftenconfusedwitheachother.ToavoidfurtherdifficultythetwoChurchillseventuallyagreedthattheBritishChurchillwouldpublishasWinstonS.ChurchillwhiletheAmericanwouldsimplygobyWinstonChurchill. InDecember1931ChurchillwasinNewYork.Whilecrossingthestreethewashitbyacar.AsitturnedoutChurchillhadinstinctivelylookedtotherightwhenhewantedtocross.HoweversincecarsdriveonoppositesidesoftheroadinAmericaandBritainheshouldactuallyhavelookedleft.Insteadhesteppedserenelyintothepathofanoncomingcar. Fortunatelyheplayeddowntheseverityoftheinjuries.Healsoacceptedalltheblamefortheaccidentinformingthepolicethatthedriverwasinnocentandsecuringhisrelease.AfterwardsChurchillmanagedtotalkhisdoctorintowritinghimanotestatingthatThepost﹣accidentconcussion撞击ofWinstonS.Churchillnecessitatestheuseofalcoholicspiritsespeciallyatmealtimes. 1TheunderlinedwordovershadowinParagraph3probablymeans. A.tohide B.topromote C.tobringshameon D.tomake…smallbycomparison 2WhichofthefollowingistrueofChurchill? A.Hepreferredpoliticalcareertowriting. B.HisfirstbookisaboutthewaragainstNazis. C.Hispopularityseemednottobeaffectedbyhisimageofsmokingcigar. D.HehadafightwiththeAmericanChurchillovertheuseoftheirnames. 3FromthecaraccidentweknowChurchillwasaman. A.loving B.careless C.sympathetic D.strong﹣willed 4Whatmaytheparagraphthatfollowstalkabout? A.Churchill'sotherkindness. B.Churchill'spoliticalachievement. C.SomeotheranecdotesofChurchill. D.Churchill'spopularityininternationalcommunity
InthestorytoldbytheRomanpoetOvidPygmalionisasculptorwhofallsinlovewithastatuehehascreated.BernardShawborrowedthethemeforhisplayPygmalion﹣laterturnedintothemusicalMyFairLady﹣﹣﹣inwhichProfessorHenryHigginschangestheCockneyflowergirlElizaDoolittleandlovesherevenasheteachesherhowtospeakproperEnglish. PsychologiststoohavepickedupthethemeresearchingwhattheycallthePygmalioneffect.ThefindingassocialpsychologistRobertRosenthalputsitisthatwhatonepersonexpectsofanothercancometoserveasaself﹣fulfilling应验的prediction.RosenthalandhiscoauthorLenoreJacobsoncreatedthetermtodescribetheamazingresultsofanexperimenttheycarriedoutinaCaliforniaschoolin1965.Studentstookatestthatwassaidtobeabletoidentifygrowthspurters﹣﹣﹣thosewhoweretomakegreatprogressacademically.Teachersweregiventhenamesofpupilswhowereabouttoprogressintellectually﹣﹣﹣andsureenoughthesestudentsshowedasignificantlygreatergaininperformanceovertheirclassmateswhentestedagainattheendoftheyear. Buthereisthethingthespurterswereactuallychosenatrandom.TheonlydifferencebetweenthemandtheirclassmatesRosenthalwriteswasinthemindoftheteachers.Andyettheexpectationsheldinthemindoftheteacherscanmakeabigdifference. Justhowdohighexpectationspromotegreaterachievement?It'snotsomemagicalact.Ratheritishigherexpectationsthatleadteacherstoactdifferentlyinsomespecialwaystoencouragestudents.Sobychangingourbehaviorandbelievingourstudentshavegreatpotentialwecanhelpourstudentsrealizetheirpotential. 1TheauthoroftheplayPygmaliongotinspirationfromC. A.themusicalMYFairLady B.somepsychologists'research C.aRomanstorytoldbyOvid D.aprofessor'slovestoryinEngland 2Whydidthespurtersmakegreatprogressintheexperiment?C A.theywerechosenatrandom B.theyweremoreconfidentthantheirclassmates C.theyreceivedhighexpectations D.Therewassomemagicinteachers'behavior 3Theexperimentconductedin1965A. A.isanexampleofthePygmalioneffect B.improvedallthestudents'grades C.hadnormalresultspredictedbyteachers D.identifiedgrowthspurterssuccessfully 4Forwhomwasthetextprobablywritten?A A.Teachers B.Students C.Researchers D.Writers
你校网站新开了一个英语写作栏目column供学生发表post英语作文互相交流提高写作能力.请你为该栏目写一个英文介绍内容包括 1.开设目的 2.栏目优势教师在线指导等 3.作文要求内容贴近学生生活 4.奖励方案 5.欢迎投稿 注意 1.词数100左右2.可以适当增加细节以使行文连贯.
Communicationhasalwaysbeenoneofthebasickeystosuccess.Theysaygreatpublicspeakersarebornandnotmadebuttherearealwayssometricksofthetradewhichwillhelpyouinbecomingagreatorator.1 ReadStudyandLearn Readingandstudyinghelpsyoutolearndifferentwordsandwaystoconveyyouridea.Watchhowotherspeakerstalk.2Learnfromtheexpertsandgettipsfromthemifyoucan. PostureisImportant Whosaidthatcommunicationisjustspeakingwords?3Ifyoustandconfidentlyorifyouaresittingupstraightitexpressesthatyouarefocusedonwhatyou'redoingandthatyouknowwhatyouarespeakingabout.Italsoshowshowmuchyouvaluetheirtimeandattention. ShowEnthusiasm 4Evenatechnovice新手wouldgetenthusiasticaboutthenewinventionwhenJobswouldpresentit.It'sbecausehehadthatenthusiasmwhichwouldspreadtootherpeopleinaheartbeat.Soyoumustshowenthusiasminwhatyouarespeakingaboutoritwillseemthatevenyouareuninterestedinwhatyouhavetosay. WelcomeQuestions 5Allowyouraudiencesometimetoaskyouquestions.Thisstagewillhelpyoudetermineifyouhaveeffectivelysharedyourknowledgeifyouraudiencetooknoticeandlistenedtoyouandifthereareanypartsthatyouneedtodiscussagainorclarify. A.Payattentiontotheirfacialexpressionsandhandgestures. B.Communicationisnotonlydoneorally. C.HaveyoueverheardthelateSteveJobsholdingaspeech? D.Herearesometrickswhichwillhelpyouinbecomingagreatspeaker. E.Onceyouhavegottenusedtoityourconfidencewillgrowanditwillshow. F.Thisisdecisiveinanyspeechesthatyoumake. G.Howyoustandorsitalsocommunicatesdifferentideastoothers.
BillboardMusicAwardsoftheYear2015goestoTaylorSwiftasinger﹣songwriterwhohasshapedandinspiredtheAmericanmusicindustrywithhersuccess. WhenTaylorSwiftfirstcametopublicnoticeshewasa17﹣year﹣oldnewcomerwholovedsingingtoherownguitar.Shewasfarmoreenthusiasticthanskilledbutapparentlythrewsparkofsuperbtalent. FouryearslaterSwifthasbecomeamulti﹣awardswinnerwiththebiggestsellingalbums.ForherconsummateperformanceTaylorSwiftwasnamedBillboardmagazine'swomanin2011.SheistheyoungestartisttoreceivehonorsandseveralBillboardMusicAwardsamongthemTopCountryAlbumforthefive﹣timeplatinum白金sellingSpeakNowherthirdalbumthatwasreleasedthatyear. Taylorhasshownthepowerofgoodsongwritingwithmusicofstyles.saidBillWerdeBillboard'seditorialdirectorAndatsuchayoungageTaylorhasalreadymadeamajorimpactonmusicandhasbeenanunbelievablerolemodelforpromisingartistsandyoungwomaneverywhere. Swiftisusedtobreakingchartrecordsandwinninghonorssincehercareerstarted.Shefollowedthatupin2008withFearlesswhichestablishedherasaskilledsongwriterwithseveralhitsincludingLoveStoryYouBelongWithMeandWhiteHorse. Notsurprisinglythe6﹣timeplatinumFearlessisthemostawardedalbumincountrymusichistoryintheUSandheroverallworldwidesalesnowreach20millionalbumsand40millionsongsdownloads.SwifthasspentthepastyearontheSpeakNOWWorldTourinsupportofherthirdalbumandnowshe'sgettingreadytogofurther. AccordingtoarecentinterviewwithTheNewYorkermagazineSwifthassofarwrittenabout10songsfora2016album.Shesaidthenewalbumisaboutfeelingsofgrowingupandbecominganadult. They'resadifI'mbeinghonest.SwifttoldTheNewYorker.They'reaboutmyheartbreaksandmymovingon.Butmoreimportantlytheyareaboutachievingcontentment.You'renotalwaysgoingtoberidiculouslyhappyasyougrowup. 1AsanewcomerintheshowbusinessTaylorSwiftwasconsideredtobe. A.askilledsongwriter B.anoutstandingartist C.anenergeticdirector D.apromisingtalent 2TheunderlinedwordconsummateinParagraph3canbestbereplacedby. A.confident B.professional C.excellent D.different 3Whatcanwelearnfromthepassage? A.SpeakNowisTaylorSwift'sthirdalbum. B.FearlessmarkedthebeginningofSwift'scareer. C.Swift'snewalbumisaboutfeelingsofgrown﹣ups. D.SwifthasgainedBillboardmagazine'swomantwice. 4Whichofthefollowingcanbethebesttitleofthepassage? A.ARisingMusicGenius B.Taylor'sHeartbreaksinGrowth C.AnInterviewwithTaylorSwift D.BillboardMusicAwardsinAmerica
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