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测量“小灯泡的电功率”．小灯泡的额定电流为0.3A，灯丝阻值在10Ω～15Ω之间．所提供的器材有：电压表、电流表、电源（电压恒定为6V）、开关各一个，滑动变阻器（“5Ω2A”、“20Ω1A”）两个，...
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某实验小组的同学用伏安法测量小灯泡电功率待测小灯泡额定电压为3.8V小灯泡的额定功率估计在1W左右检
李明做测量小灯泡电功率的实验所用小灯泡的额定电压为2.5V.1请用笔画线代替导线将如图甲所示的实验电
有一只小灯泡它的额定电压是6V当加在它两端的电压为4V时通过灯泡的电流为03A则灯泡的额定功率是__
某同学利用如图所示的电路测量额定电压为2.5V小灯泡的额定功率下列说法正确的是
闭合开关前，滑片P.应滑到A.端
闭合开关后，小灯泡不发光，一定是小灯泡灯丝断了
当电压表示数为2.5V时，测出通过小灯泡的电流，可得出小灯泡的额定功率
实验还可得知，小灯泡的实际功率越大，小灯泡越亮“，
某同学利用如图所示电路测量额定电压为2.5V小灯泡的额定功率下列说法错误的是
当电压表示数为2.5V时，测出通过小灯泡的电流， 可算出小灯泡的额定功率了
闭合开关后，小灯泡不发光，一定是小灯泡灯丝断了
闭合开关前，滑片P.应滑到B.端
实验还可得知，小灯泡的实际功率越大，小灯泡越亮
一个额定电压为2.5V.的小灯泡正常发光时通过灯丝的电流为0.2A.求1小灯泡的额定功率2小灯泡发光
某实验小组的同学用伏安法测量小灯泡电功率待测小灯泡额定电压为3.8V小灯泡的额定功率估计在1W左右故
小光在实验室测量小灯泡的电功率小灯泡两端电压和通过小灯泡的电流如图所示此时通过小灯泡的电流为____
在测量额定电压为2.5V的小灯泡额定功率的过程中当小灯泡两端的电压为2.5V时用电流表测量通过小灯泡
图9是某课外活动小组设计的小台灯电路图S.为单刀双掷开关电源电压为12V.且保持不变小灯泡的额定功率
某同学利用如图所示电路测量额定电压为2.5V小灯泡的额定功率下列说法错误的是
当电压表示数为2.5V时，测出通过小灯泡的电流， 可算出小灯泡的额定功率了
闭合开关后，小灯泡不发光，一定是小灯泡灯丝断了
闭合开关前，滑片P.应滑到B.端
实验还可得知，小灯泡的实际功率越大，小灯泡越亮
小阳在实验室测量小灯泡的电功率当小灯泡两端电压为3V时电流表的示数如图所示此时通过小灯泡的电流为A.
一只额定电压为2.5V的小灯泡正常发光时通过灯丝的电流是0.2A求1小灯泡的额定电功率2小灯泡正常发
灯丝的电阻随电压增大而减小
小灯泡的额定功率为0.8W
小灯泡的额定功率为四次功率的平均值
通过小灯泡的电流与它两端的电压成正比
某实验小组的同学用伏安法测量小灯泡电功率待测小灯泡额定电压为3.8V小灯泡的额定功率估计在1W左右连
在测量小灯泡的电功率中小灯泡的额定电流为0.3A灯丝阻值在10Ω～15Ω之间所提供的器材有电流表电源
某实验小组的同学用伏安法测量小灯泡电功率待测小灯泡额定电压为3.8V小灯泡的额定功率估计在1W左右实
要把一只额定电流为0.2安的小灯泡接入电压恒定为9伏的电源两端为安全起见将小灯泡与一个滑动变阻器串联
某同学利用如图所示电路测量额定电压为2.5V.小灯泡的额定功率下列说法错误的是
闭合开关前，滑片P.应滑到
端B.闭合开关后，小灯泡不发光，一定是小灯泡灯丝断了
当电压表示数为2.5V.时，测出通过小灯泡的电流，可算出小灯泡的额定功率
实验还可得知，小灯泡的实际功率越大，小灯泡越亮
某同学利用如图所示电路测量额定电压为2.5V小灯泡的额定功率下列说法错误的是
闭合开关前，滑片P.应滑到
端 B.闭合开关后，小灯泡不发光，一定是小灯泡灯丝断了
当电压表示数为2.5V时，测出通过小灯泡的电流，可算出小灯泡的额定功率
实验还可得知，小灯泡的实际功率越大，小灯泡越亮
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30分I'msittinginaquiethotelroom.It'sjustpastnoonlateJulyandI'mlisteningtothe1soundsofalife﹣or﹣deathstrugglegoingonafewfeetaway.There'sasmallflyburningoutthe2ofitsshortlife'senergiesinafruitlessattemptto3throughtheglasswindow.Thebeatingwingstellthemovingstoryofthefly's4:Tryharder.Butit'snot5.Thecrazyeffortoffersnohopefor6.Ironicallythestruggleispartofthe7.Itis8fortheflytotryhardenoughtosucceedinbreakingthroughtheglass.Thisflyisdoomed.Itwilldiethereonthewindowsill.Acrosstheroomtenstepsawaythedooris9.Tensecondsofflyingtimeandthissmallcreaturecould10theoutsideworlditseeks.Withonlyafractionoftheeffortnowbeing11itcouldbefreeofthisself﹣createdtrap.Whydoesn'ttheflytryanotherapproachsomethingdramatically12Howdiditgetso13intheideathatthisparticularrouteoffersthemostpromiseforsuccessWhatlogicisthereincontinuingtoseeka/an14byrepeatingthesamefailedactionThereisnodoubtthattheapproachof'keeptryinghard'makessensetothefly.Regrettablyit'sthesameideathatwilleventually15thefly.Tryingharderisn't16thesolutiontoachievingmore.Itmaynotofferanyreal17forgettingwhatyouwantoutoflife.Sometimestryingharderistheproblem.Ifyou18yourhopesforabreakthroughontryingharderthaneveryoumay19yourchancesforsuccess.Youshouldtryharderbytrying20.1A.sweet B.desperate C.mysterious D.curious2A.last B.first C.best D.Worst3A.put B.run C.see D.fly4A.performance B.strategy C.contribution D.dream5A.working B.improving C.moving D.living6A.pleasure B.return C.peace D.escape7A.prize B.design C.trap D.success8A.irresponsible B.impossible C.reasonable D.practical9A.bright B.broken C.open D.wide10A.reach B.see C.own D.leave11A.done B.tried C.sought D.wasted12A.dangerous B.demanding C.different D.powerful13A.concerned B.worried C.frustrated D.locked14A.breakthrough B.explanation C.improvement D.guarantee15A.interrupt B.kill C.encourage D.Persuade16A.completely B.importantly C.necessarily D.appropriately17A.experience B.promise C.position D.challenge18A.follow B.shift C.get D.risk19A.miss B.increase C.abandon D.substitute20A.simpler B.sooner C.smarter D.braver
下列做法不利于保护环境的是
设椭圆为左右焦点B为短轴端点长轴长为4焦距为2c且b＞c△BF1F2的面积为． Ⅰ求椭圆C的方程 Ⅱ设动直线ly＝kx+m椭圆C有且仅有一个公共点M且与直线x＝4相交于点N．试探究在坐标平面内是否存在定点P使得以MN为直径的圆恒过点P若存在求出点P的坐标若不存在．请说明理由．
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2018年是中国改革开放40周年改革开放40年来从开启新时期到跨入新世纪从站上新起点到进入新时代我们党引领人民绘就了一幅波澜壮阔气势恢宏的历史画卷谱写了一曲感天动地气壮山河的奋斗赞歌．40年来我们始终坚持保护环境和节约资源坚持推进生态文明建设．郑州市政府也越来越重视生态系统的重建和维护．若已知市财政下拨一项专款100百万元分别用于植绿护绿和处理污染两个生态维护项目植绿护绿项目五年内带来的生态受益可表示为投放资金x单位百万元的函数M单位百万元Mx＝处理污染项目五年内带来的生态受益可表示为投放资金x单位百万元的函数N单位百万元Nx＝0.2x． 1设分配给植绿护绿项目的资金为x百万元则两个生态项目五年内带来的收益总和为y写出y关于x的函数解析式和定义域 2生态项目的投资开始利润薄弱只有持之以恒才能功在当代利在千秋试求出y的最大值并求出此时对两个生态项目的投资分别为多少
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10分 HowtoTellaGreatStory Inthisinformationagebusinessleaderswon'tbeheardunlessthey'retellingstories.Factsandfiguresdon'tstickinourmindsatall.Butstoriescreatestickymemoriesbyattachingemotionstothingsthathappen.1.Hereishowtousestory﹣tellingtoyourbenefit. Startwithamessage Everystory﹣tellingexerciseshouldbeginbyasking:WhoismyaudienceandwhatisthemessageIwanttosharewiththem2.Forinstanceifyouaretryingtoconvinceseniorleaderstotakeariskbysupportingyourprojectyoucantellthemthatmostcompaniesarebuiltontakingsmartchances. 3 Thebeststory﹣tellerslooktotheirownlifedetailsandmemoriesforwaystodrawattentiontotheirmessage.Theremaybeatendencynottowanttosharepersonaleventsatworkbutexperiencesthatindicatehowtheyovercometheirstrugglearewhatmakeleadersappearauthentic. Keepitsimple Someofthemostsuccessfulandmemorablestoriesarerelativelysimpleandstraightforward.Don'ttellyouraudiencewhatshoesyouwerewearingifitdoesn'tbetterthestory.4suchasyourfeelingsandthehumblebeginningsofanow﹣greatcompany.Theycanattractyourlistenersand﹣getyourmainmessageacross. Don'tmakeyourselfthehero Youcanbeacentralfigureinastorybutthefinalfocusshouldbeonpeopleyouknowlessonsyou'velearnedoreventsyou'vewitnessed.Whenyoutalkabouthowgreatyouaretheaudienceshutsdown.5 A.Showgoodhumor B.Providevitaldetails C.Usepersonalexperiences D.Eachdecisionaboutyourstoryshouldflowfromthosequestions E.Leadersalwaystellstoriestopersuadeotherstosupportaprojectortofacechallenges F.Themoreyoumakeyourselfastarthelesslikelyyouraudiencewillbuyyourmessage G.Thatmeansleaderswhocancreateandsharegoodstoriesgainagreatadvantageover
8分BigtobaccoiswhatthebossesofseverallargetechnologyfirmshavestartedcallingFacebook.Beingcomparedtothetobaccogiantsisfarfrompraisebutitisnottheonlywide﹣spreadanalogy比拟.AlowerblowisthesuggestionthatFacebookmaybecomelikeYahootheoncehigh﹣flyinginternetfirmthatfell. Evenayearagotheideawouldhavebeenunthinkable.ButsinceJanuaryFacebookhasbecometrappedinaseriesofmisjudgmentsandmissteps.ItbecameclearthatithaddonetoolittletostopRussianinterference干涉inAmerica'selectionin2016.Ithadtoadmitthatithadsharedthepersonaldataof90millionuserswithoutsidefirmswithoutpermission. ThecomparisontoYahooisimperfect.EvenatitspeakYahoo'sbusinesswasneveraslargeandprofitableasFacebook's.OneofthemainreasonsYahoodeclinedisbecauseitlostouttoapowerfulcompetitorGoogleinonlinesearch;MarissaMayeritsbossfrom2012untilitssaletoVerizonlastyearwasunabletorestoreadvertisers'oremployees'confidenceasusersleft. ButpeoplewhowatchedYahoo'sfallingseesimilarities.Executive主管turnoverwasaleadingindicatorofitsdecline;beforeMs.MayerwashiredYahoowentthroughfourchiefexecutivesinthreeyears.Mr.ZuckerbergwhocontrolsthemajorityofFacebook'svotingsharesisnotleavingbutmanytopexecutivesare.ThisyearseveralhaveannouncedtheirdeparturesincludingFacebook'schiefsecurityofficer. Whenadvertisers'faithinFacebookhasbeenshakenpoliticiansinWashingtonarerunningoutofpatiencewiththecompany.Lawmakers'inspectionofthefirmiscausingittobemorecautiousabouthowitusesdatafortargetingadvertisementsandaboutwhatinformationitmakesavailabletooutsiders. Mr.ZuckerbergandMs.SandbergareunderpressuretoprovetoemployeesandadvertisersthatFacebookisnotonlytrustworthybutworthyoftheirtimeandmoney.Iftheycannotdosoandthecompany'ssharepricecontinuesitsslideitispossiblethatMs.Sandbergwillbereplacedinthenextyear.Mr.ZuckerbergwilldoubtlesshavethoughtsaboutYahoo'ssorrytale. 1ForFacebookbeingcomparedtobigtobaccois. A.positive B.ambitious C.creative D.negative 2AccordingtotheauthorwhatdoesFacebookcurrentlyhaveincommonwiththefailedYahoo A.Lettingoutusers'data. B.Beingdeepinfinancialcrisis. C.Leadersareleavingthecompany. D.Layingoffalargenumberofemployees. 3TheauthortriestosupporthisjudgmentaboutFacebookby. A.questioningitsmanagement B.usingevidencerelatedtoit C.analyzingitsfinancialdata D.listingitsadvantagesanddisadvantages 4Whatisthemainideaofthepassage A.Facebookgetstrappedintrouble. B.Twocompaniesaredeepincrisis. C.HowtosaveFacebook. D.Faithismorevaluablethangold.
10分Dreamisstrength.Thestrengthcanbringuswhereverwewanttogettoanditcanbringusalotofwondersonourwaytotheplaceinourdreams. Dreamisbeauty.Maybeyoucanseethethingsfullofmagicandmaybeyouwillbemovedbyyourowndream.1.ButshouldwehaveourlifewithoutdreamsOfcoursenot. Everyonehashisdreamsanddreamsareespeciallyimportanttoteenagers.Asteenagersyouhavemanydreams.ThesedreamscanbeverybigsuchaswinningtheNobelPrize.Ortheycanbesmallforexampleyoumayjustwanttobecomeoneofthetenbeststudentsinyourclass.2whatdoyoudowithitDoyouevertrytomakeyourdreamcometrue AndrewMatthewsanAustralianwritertellsusthatmakingourdreamscometrueisthebiggestchallengeinourlife.3orthatitisimpossibleforyoutobecomeawriter.4.Infacteveryonecanfulfillhisdream.Thefirstthingyoumustdoisrememberwhatyourdreamis.Don'tletitleaveyourheart.Keeptellingyourselfwhatyouwant.Dothisstepbystepandyourdreamwillcometrueearlierbecauseabigdreamismadeupofmanysmalldreams. Youmustnevergiveupyourdreams.5.Butthebiggestonecomesfromyourself.Youneedtodecidewhatisthemostimportantandfaceallthesedifficultiesbravely. A.Thesekindsofthoughtsstopyourealizingyourdreams B.Therewillbemanydifficultiesontheroadtoyourdreams C.Onceyoufindadream D.Youmaythinkyou'renotverygoodatsomeschoolsubjects E.Bothbigdreamsandsmallonesareveryimportanttoourlives F.Theworldissorealthatthedreamsseemweak G.Yourtalentisoneofthemostimportantfactorsinlivingyourdreams
10分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.作文中共有10处错误每句中最多有两处.每处错误仅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∧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. I'mwellfeedathomewithDadasmycook.Dadhasacquiredvariouscookingmethodbytrialanderror.Notonlydoeshiscookingappealtomyappetitebutalsoguaranteethediversityofnutritionforme.Dadincludeslargeamountsoffruitsvegetablesorgrainsinmyregularmealstokeepmydietbalanced.ForeachonemealIeatquitealotbutIdon'tactuallyriskanyhealthyproblem.SowhencomparingmewithmyclassmatesIfeelveryluckytolivewithsuchgooddad.Ialsofeelgratefulformydadjustbecauseofwhichhehasbeendoingformeeversince.
10分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处语言错误每句中最多有两处.每处错误仅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∧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. RecentlyIgotactiveinvolvedinareadingactivityinwhichIsharemyfavouritewriterLaoSheandhisnovelFourGenerationsunderOneRoof. LaoSheoneofthebestknownChinesewritersarefamousforhernovelsandplays.DeeplyrootingintheChinesesocietyhisworkdescribethereal﹣lifeexperiencesofpeopleofallwalksoflife.HisnovelFourGenerationsunderOneRoofgivessuchthevividdescriptionofpeople'ssufferingsofthatageithastouchedalmosteveryreader. LaoSheisrecognizedtobeapowerfulwriterwhoseworkshaveinfluencedonquiteafewgenerations.That'showIlikehimandhisworks.
将密封良好的方便面从平原带到高原时包装袋鼓起是因为袋内的气体分子
已知数列{an}的前n项和为 Ⅰ求数列{an}的通项公式 Ⅱ若求数列{bn}的前n项和Tn．
8分Awomanheldherphonetightlytoherheartthewayachurch﹣goermightholdaBible.Shewasanxioustotakeapictureofanimpressivebunchofflowersthatsatnotsofarawaybutfirstshehadtogetthroughacrowdofotherspushingtheirwaytodothesame.ThecauseofthiswasBouquetstoArtoneofthemostpopulareventsatthedeYoungMuseuminSanFrancisco. Flowersellerswereaskedtocreateflowerarrangementsthatrespondtopiecesofartondisplayfromancientcarvingstocontemporarysculptures.It'sextremelyattractiveandalsomemorabletothepointthatithasbecomeaproblem. InrecentyearsthedeYoungreceivedmorethanathousandcomplaintsfrompeoplewhofeltthatcellphoneshadspoiledtheirexperienceoftheexhibit.institutionsoffineartaroundtheworldfacesimilarproblemsasthedesiretotakephotographsbecomesahugeattractionformuseumsaswellassomethingthatupsetssomeoftheirpatrons资助人.SothedeYoungrespondedwithakindofcompromise:carvingoutphotofreehoursduringtheexhibition'ssix﹣dayrun. Onecommoncomplaintabouttheeffectofsocialmediaonmuseumcultureisthatpeopleseemtobemissingoutonexperiencesbecausetheyaresobusycollectingevidenceofthem.AstudyrecentlypublishedinthejournalPsychologicalSciencesuggeststhereissometruthtothis.Itfindsthatpeoplewhokeeptakingphotosofanexhibitandpostingthemonsocialmediaratherthansimplyobservingithave;ahardtimerememberingwhattheysee.Buttheissueiscomplexfortheprofessionalsrunningmuseums.LindaButlerthedeYoung'sheadofmarketingandvisitorexperienceacknowledgesthatnoteveryonewantsamuseumtobeaphoto﹣takingplayland.Yetalotofpeopledo‑andshebelievesthatthedeYoungisinnopositiontojudgeonereasonforbuyinga﹩28tickettobemorevalidthananother.Ifweremovedsocialmediaandphotographyshesayswewouldriskbecomingirrelevant. 1WhatwasthewomaneagertodoaccordingtoParagraph1 A.Togetherphone. B.Totakeaphoto. C.Toescapethecrowd. D.Topushahead. 2HowdidthedeYoungrespondtothedilemma A.Bysettingperiodswithoutphoto﹣taking. B.Bymakingtheexhibitionfreeofcharge. C.Bycompromisingwiththegovernment. D.Byextendingthefreeexhibitionhours. 3Therecentstudyfindsthattheuseofsocialmediainmuseumsmay. A.uncoverthetruth B.playanegativerole C.accumulateevidence D.causemanycomplaints 4WhichofthefollowingmayLindaButlersupport A.Cateringtovisitors. B.Reducingadmissionprices. C.Reservingjudgementinpublic. D.Banningsocialmediaandphotography.
30分AsIsatmotionlessonthestepsofthepoolwatchingeveryoneelseswimbackandforthIrealizedthatIhadspentmostofmylifewatchingothersenjoythemselves.ItwasthenthatI1alittlegirlstaringatmewithalookofconfusion.Ismiledatherhopingto2theicebytalkingtoher.Unfortunatelymy3failedandshejustkeptonstaring.My4increasedasalittleboyswamuptomeandsaidIfeelsorryforyou. Afterthe5athoughstruckmeIhadtochange6theworldviewedme.BecauseitwaschildrenwhostaredatmethemostIdecidedtowriteachildren'sbookthattaughtthemabout7inafunway.ThisiswhenKatGirlasuperheroina8whohelpschildrenthatarebeingbulliedcameintomymind. Iquickly9insidemyapartmentandbegancreatingthestory.AsIwroteeachwordIcould10myfutureasaworld﹣renownedauthorandpublicspeaker.Myexcitement11likewildfire.Overthenexttwoyearsthestory12manychangesbeforeitsawtheworldinthespringof2011.Myperseverance13paidoff. OnedayIwasinvitedtospeaktothestudentsataneighboringschool.Iconfidentlywheeledintoaclassroomfilledwithstudentswho14atmejustlikethelittlegirlinthepool.HowdoyoufeelwhenyouseemeIaskedthem.Thekidsbravely15Ifeelsorryforyou. Iopenedmybookandstartedreading.ImmediatelyInoticedthechildren'sstaresturnedto16.HowdoyoufeelwhenyouseemeIaskedagain.Without17theyrepliedYouaresocool!Doesyour18flytooIjustsmiledNonotyetbutmaybesomeday.Iknewinmyheartthatthiswas19.Thepasttwoyearshadproventomethatwith20anythingispossible. 1A.suggested B.watched C.appreciated D.noticed 2A.break B.forget C.remove D.deliver 3A.project B.attempt C.anger D.advice 4A.relief B.curiosity C.awkwardness D.encouragement 5A.competition B.encounter C.argument D.interview 6A.what B.when C.how D.why 7A.disabilities B.potentials C.paintings D.manners 8A.pool B.wheelchair C.car D.spaceship 9A.wheeled B.walked C.rushed D.raced 10A.regard B.realize C.consider D.picture 11A.folded B.spread C.recovered D.declined 12A.turneddown B.wentthrough C.lookedup D.gotaround 13A.generally B.carefully C.eventually D.separately 14A.called B.glimpsed C.laughed D.stared 15A.responded B.greeted C.agreed D.continued 16A.doubts B.jokes C.smiles D.tears 17A.hesitation B.discussion C.intention D.imagination 18A.body B.dream C.book D.chair 19A.funny B.strange C.false D.true 20A.generosity B.determination C.popularity D.harmony
6分 FrancesStevensReeseWooldlandTrailGuide TheWoodlandTrailwasopenedtothepubliconOctober211997.Boscobel'sBoardofDirectorsadoptedaformaldecisionofnamingtheWoodlandTrailinhonorofformerBoscobelboardmemberFancesStevensReese1917﹣2003oneyearafterhisdeath. Thetrail小径isapproximately10milesinlengthleadingdowntoConstitutionForest.WhentheWestPointGlassFactorywasoperatingduringtheCivilWartreesformilesaroundwereclearedtoprovidefirewood.Walkingoutoftheforestyouwillfindalargemassofnativehardrockaboutthreebillionyearsold. Throughoutthiscountrypathyouwillfindpictureboardsidentifyingbirdsandplantslocaltothisregion.Youwillalsofindsignswithhistoricandenvironmentalinformationwrittenbyareaspecialists. Whenyoutakeawalkthroughthisundiscoveredforestlandpleasebeaconsiderateguest. 〇BeforewalkingthetrailpleasepurchaseapassintheCarriageHouse.Planaheadsoyouwillbebackbyclosingtime. 〇Followthetrailmarkersandremainonthetrail.Besidesprotectingthefragileforestecosystemyouwillreducetheriskofpoisonplantsandsnakes. 〇Leaverocksplantsanimalsandartworkswhereyouseethemsothatthepersonbehindyoucanhavethesameexperience. 〇Carryoutwhateveryoucarryinbecausetherearenorubbishcontainersonthetrail.Ifyouhappentoseeapieceoflitterbeagoodguestandpickitup. 1WhenwasthetrailnamedtohonorFrancesStevensReese A.In1997. B.In1917. C.In2003. D.In2004. 2Whatcanyouseealongthetrail A.Anoldbattlefield. B.Aglassfactory. C.Informationsigns. D.Rockhouses. 3Whatshouldyoudoasathoughtfulvisitor A.Leavethewildlifeundisturbed. B.Throwtherubbishintothedustbins. C.MakereservationsintheCarriageHouse. D.ProtectthemarkersoftheWoodlandTrail.
6分 FourFreeMobileAppstoHelpYouLearnEnglishFaster HaveyourealizedthatyoucanputyoursmartphonetoreallygooduseforlearningEnglishHereare4freemobileappsthatwillhelpyoudojustthat. HelloEnglish Itcoversalltheaspectsoflanguagelearningincludingvocabularytranslationgrammarspellingsspokenandreadingskills.ItusesinteractivegamestoteachdifferentEnglishlessonsandoffersnewaudiobookslatestnewsandbooks.HoweveryoushouldalreadyunderstandbasicEnglishstructuresandalphabetsfortheappcan'thelpyoulearnEnglishfromscratch从零开始. Duolingo IfyouwanttolearnEnglishfromscratchthenthisistheappyouarelookingfor.DuolingousesinteractivegamestohelpyoulearnEnglish.Forbeginnerstheappfocusesonhelpingyoulearnverbsphrasesandsentences. Lingbe Ifyouarereadytopracticeyourspokenskillsinthereal﹣worldyou'llneedLingbe.It'sacommunity﹣basedappwherepeoplehelpeachotherandsharetheirnativelanguages.ItconnectsyouwithrealpeopleoncallwhoarenativeEnglishspeakers. HelloTalk HelloTalkissimilartoLingbeasitconnectsyouwithnativespeakerstohelpimproveyourlanguageskills.Howeveritaddsafewextrafunctionsthatmightinterestyou.Youcanviewtheinformationaboutuserstofindamatchthatinterestsyou.Additionallyyoucanalsosendtextandaudiomessagesandevendovideocallswithotherpeople. IfyouareabeginnerstartfromDuolingoandthenuseHelloEnglishtotakefullcommandoverthelanguage.ForfluentspokenEnglishlearnersyoucantryoutLingbeorHelloTalk. 1WhatshouldyoualreadyunderstandtouseHelloEnglish A.Goodreadingandwritingskills. B.Basiclisteningandspeakingtips. C.DifferentEnglishlessonsandbooks. D.Englishlettersandbasicstructures. 2WhichappisthebestchoiceforanEnglishbeginneratfirst A.HelloEnglish. B.Duolingo. C.Lingbe. D.HelloTalk. 3WhatcanyoudoonLingbe A.Readthelatestnews. B.Enjoytheinteractivegames. C.PracticeyourspokenEnglish. D.Talkwithnativespeakersintheflesh.
下列做法对人体健康没有害的是
8分Yougetanxiousifthere'snowi﹣fiinthehotelormobilephonesignalupthemountain.Youfeelupsetifyourphoneisgettinglowonpowerandyousecretlyworrythingswillgowrongatworkifyou'renotthere.Allthesecanbecalledalwaysonstresscausedbysmartphoneaddiction. Forsomepeoplesmartphoneshaveliberatedthemfromthenine﹣to﹣fivework.Flexibleworkinghasgiventhemmoreautonomyintheirworkinglivesandenabledthemtospendmoretimewiththeirfriendsandfamilies.Formanyothersthoughsmartphoneshavebecomecruelmastersintheirpocketsneverallowingthemtoturnthemoffandrelax. Pittsburgh﹣baseddeveloperKevinHoleshwasworriedabouthowmuchhewasignoringhisfamilyandfriendsinfavorofhisiPhone.Sohedevelopedanapp﹣Moment﹣tomonitorhisusage.Theappenablesuserstoseehowmuchtimethey'respendingonthedeviceandsetupwarningsiftheusagelimitsarebroken.Moment'sgoalistopromotebalanceinyourlifehiswebsiteexplains.Sometimeonyourphonesometimeoffitenjoyingyourlovingfamilyandfriendsaroundyou. Dr.ChristineGrantanoccupationalpsychologistatCoventryUniversitysaidTheeffectsofthis‘alwayson'culturearethatyourmindisneverrestingandyou'renotgivingyourbodytimetorecoversoyou'realwaysstressed.Andthemoretiredandstressedwegetthemoremistakeswemake.Physicalandmentalhealthcansuffer. Andasthenumberofconnectedsmartphonesisincreasingsoistheamountofdata.Thisisleadingtoasortofdecisionparalysis瘫痪andiscreatingmorestressintheworkplacebecausepeoplehavetoreceiveabroaderrangeofdataandcommunicationswhichareoftendifficulttomanage.Itactuallymakesitmoredifficulttomakedecisionsandmanydolessbecausethey'recontrolledbyitallandfeeltheycanneverescapetheofficesaidDr.ChristineGrant. 1What'sthefirstparagraphmainlyabout A.Thepopularityofsmartphones. B.Theprogressofmoderntechnology. C.Thesignsofalwaysonstress. D.Thecauseofsmartphoneaddiction. 2KevinHoleshdevelopedMomentto. A.researchhowpeopleusetheirmobilephones B.helppeoplecontroltheiruseofmobilephones C.makepeoplebetterusemobilephones D.increasethefunofusingmobilephones 3What'sDr.ChristineGrant'sattitudetowardsalwaysonculture A.confused. B.positive. C.doubtful. D.critical. 4Accordingtothelastparagraphagreateramountofdatameans. A.wewillbecomelessproductive B.wecanmakeadecisionmorequickly C.wewillbeequippedwithmoreknowledge D.wecanworkmoreeffectively
30分JakeandMaxKleinaretwinbrotherswhohaveapassionforvolunteering.Theirfamilyhasalwaysdonecommunity1andatayoungagetheychoseto2giftsattheirbirthdayparties.Insteadtheyaskedgueststodonatemoneytowardacharity.JakeandMaxhave3CookiesforKidsCancerandtheAmericanHeartAssociationaswellasgiven4toseverallocalorganizations.Theyhavecomeupwithsomereally5waystohelptheircommunitysuchasdonatingbookstothelocalstudentsfrompoorfamilies.WhentheyweresevenJakeandMaxwereinterestedin6withafamilyfriendatthelocalhomelesssheltertohelpcook.7heturnedthemdownbecausetheyweretoo8andhadtobefourteentocook.Thisledthemonanendless9tocomeupwithawaytohelpotherkidswhowerealsofacinga10challenge:wantingtohelpbutbeing11becauseoftheirage.ThereforeKidsThatDoGoodwas12toshowwaystokidsoradultsatANYagetheycould13thecommunityandmakea14.Thesmall15thatstartedwiththetwinbrothershasgrownintoalargewebsitethatbringsthousandsof16visitorseachyear.JakeandMaxsaythattheirwebsitebrings35000uniqueviewersandofthoseviewersKidsThatDoGoodhas17kidsto16000organizations.KidsThatDoGoodevenhastwostudentboarddirectors.StevenandJordanwhoarealso18incommunityserviceaswellasagroupofadultadvisers.JakeandMaxare19withschoolandextracurricularactivitiesandothercommunityservicepromises.KidsThatDoGoodhasblogpoststhatadvisekidson20theirowncharitableevent.1A.surveys B.services C.duties D.business2A.sortout B.playwith C.giveup D.putaway3A.chosen B.served C.operated D.organized4A.agreements B.responsibilities C.contributions D.donations5A.creative B.common C.perfect D.strange6A.travelling B.volunteering C.cooking D.recycling7A.Honestly B.Happily C.Unfortunately D.Gratefully8A.shy B.awkward C.weak D.young9A.task B.ability C.chance D.determination10A.public B.similar C.sharp D.direct11A.joked B.laughed C.denied D.praised12A.advised B.allowed C.named D.created13A.getinvolvedin B.havefunwith C.getcloseto D.teamupwith14A.judgment B.difference C.comment D.decision15A.plan B.effort C.project D.progress16A.pleased B.satisfied C.amazed D.interested17A.connected B.exposed C.contributed D.attracted18A.skillful B.active C.expert D.successful19A.familiar B.patient C.busy D.content20A.remembering B.describing C.celebrating D.building
15分AsItrieddescribingThanksgivingDaytomyin﹣laws姻亲inChinaIcouldalreadyseetheireyescloudoverwith1confuseandsensethequestionsfoizningintheirminds.SoIattempted2translatetheholidaythroughthingstheywerefamiliarwith.Idescribedtheroastturkeyassomethingsimilar3Beijingduck.IcomparedtheannualThanksgivingshowtothe4yearSpringFestivalGala联欢会onChineseNewYear'sEve.AndIcharacterized5entirecelebrationasanAmericanversionofWinterSolstice冬至inChina.Yetasmuchasmyin﹣laws6nodandsmiledIrecognizedthateventheseexplanationswereapoorsubstitute.NowordscouldfullydescribetheThanksgivingcelebrations:IhadknownintheUS. This7bethekindofdisappointmentyoufaceincross﹣culturalcommunication.Despiteallthedifferenceswecanstillsitdowntogetherandhaveheart﹣to﹣heart8discussionabouteachother'straditions.SointhespiritofmyAmericanholidayIsilentlygaveamomentofthanksfor9haveinChinasuchgreatin﹣laws10caredenoughtolistentotheirforeigndaughter﹣in﹣lawtalk.aboutThanksgivingDay.
8分ThetraditionalChineseLongtaitouFestivalorDragon﹣Head﹣RaisingFestivalfallsontheseconddayofthesecondlunarmontheveryyearandrecognizesthestartofspringandfarming.ThisyearitfallsonMarch8.Ancientpeoplebelievedthatafterthisdayrainfallincreasesbecausetherain﹣bringingDragonKinghasawakenedfromhiswintersleep.Awell﹣knownphrasegoesEryueerlongtaitoumeaningOntheseconddayofthesecondmonththedragonliftshishead.ThefestivalcelebratesancientagrarianChinesecultureandwhilesomeoftraditionalwaystocelebrateitarenolongerpracticedotherscontinuetoexist.Themostfamoustraditionisgettingahaircut.Somebelievethatgoingtothebarberonthisdaygetsridofbadluckwhileothersbelievegettingahaircutduringthefirstmonthofthelunarcalendarbringsbadluck.Anothersayingwarnsthatcuttingyourhairinthefirstmonthwillcauseyouruncletodie.AlthoughtodayfewpayattentiontoititwasonceatraditiontolineupoutsidebarbershopsonthedayofLongtaitou.PeopleeattoufuballsinEastChina'sFujianprovinceduringthefestivalandoftenmaketofuandvegetableballstoprayforfamilyandbusiness.FriedbeansarethetraditionalfestivalfoodforpeopleinpartsofShandongprovince.EatingChengyaocakeswhicharemadewithstickyriceduringthefestivalisatraditioninSuzhouEastChina'sJiangsuprovinceowingtothesayingIfyoueatChengyaoonLongtaitouyourwaistwon'thurtallyear.Meanwhileotherfoodslikedumplingsspringrollsandpopcornarenamedafterdragonbodypartstomarktheday.Noodlesaredragon'sbeardlongxudumplingsaredragon'searslongerspringrollsaredragon'sscaleslonglinandpopcorndragonseedslongzi.1WhatdidancientpeoplebelieveafterDragon﹣Head﹣RaisingFestivalA.Thedragonliftshishead.B.There'smorerainfall.C.Thedragonisstillsleeping.D.There'slessrainfall.2WhatdoestheunderlinedwordagrarianmeaninParagraph3A.agriculturalB.industrialC.travellingD.manufacturing3WhatdopeopleeatinSuzhouduringthefestivalA.Toufuballs.B.Friedbeans.C.Chengyaocakes.D.Dumplings.4WhichofthefollowingcanbethebesttitleforthepassageA.ThehistoryanddevelopmentofChina'sLongtaitouFestival.B.CutyourhairsonChina'sLongtaitouFestival.C.ThecultureandtraditionsofChina'sLongtaitouFestival.D.FoodaboutChina'sLongtaitouFestival.
8分EventhecalmassessmentoftheUN'slatestannualworldwaterdevelopmentreporthasatasteofdesperation.Alreadyitnotes1.9bnpeoplewith73%oftheminAsialiveinareaswherewaterispotentiallyseverelylimited.Thenumberfacingshortagesalmostdoublesifyoucountthoseatriskatleastonemonthayear.Andtheywillnotjustbeinpoorcountries.AustraliaItalySpainandevenAmericawillalsosufferseverewatershortage. Threemainthingswilldrivethecontinuedgrowthindemand:populationclimatechangeandagriculture.In2050thenumberofpeopleintheworldisexpectedtoincreasetobetween9.4bnand10.2bnfromjustunder8bnnow.Peoplewillbeleadingmorewater﹣consuminglifestylesandmoveintocitiesmanyoftheminplacesatgreatriskofwatershortage. TheimpactofclimatechangeinthewordsofHenkOvinkaDutchgovernment'sofficialonwatermatterswillbeWetplaceswillbecomewetteranddryplacesdrier.Theworld'swaterdistributionisalreadyhighlyunequal.Climatechangewillworsenthisinequity. Measurementsofseatemperaturesdownto2000metresshowasteadyrisesincethe1950stonewrecords.Therisingtemperaturesareaccompaniedbyrisingsealevels﹣atarateofabout3mmayear﹣asthewarmerwaterexpandsandasiceatbothpolesmelts.Andwarmerairtemperaturesmeantheatmospherecanholdmorewaterthateventuallyfallsasrain. Thebiggerproblemfromclimatechangehoweverwillnotbetoomuchwaterbuttoolittle.AsareportbytheWorldBankputsit:Theimpactsofwatershortagemaybeevengreatercausinglong﹣termharminwaysthatarepoorlyunderstoodandinadequatelydocumented.Ofcoursealotdependsonhowmuchtheclimatechangesandhowfast. 1Whatmaybethenumberofthepeoplewhofacewatershortageforatleastonemonthayear A.About1.9bn B.About1.4bn C.About3.7bn D.About5.5bn 2Whatcanweinferabouttheyear2050 A.Theproblemofwatershortagewillnolongerexist. B.Theworldpopulationwillincreasetobetween9bnand10bn. C.Almostallthedevelopedcountrieswillsufferseverewatershortage. D.Manypeoplewillhavetoreducetheirwaterconsumption. 3WhatisthemainideaofParagraph4 A.Climatechangebringstoomuchwater. B.Seatemperatureshavebeenrisingsteadilyrecently. C.Theproblemofwatershortageisgreaterduetoclimatechange. D.Risingsealevelsandmorerainmeannomorewatershortage. 4Thenextparagraphinthispassagemightdiscuss. A.Howtosolvetheproblemofwatershortage. B.Howagricultureinfluenceswaterdemand. C.Whatdamagewatershortagehascaused. D.Whyitisimportanttocontrolpopulationgrowth.
25分假定你是李华.在上周的国际文化节上你结识了喜欢中国书法的交换生Peter.你准备赠送他一本英文版中国书法鉴赏.请给他写一封电子邮件内容包括: 1.写信目的; 2.简介该书; 3.询问地址. 注意: 1.词数100左右邮件的开头与结尾己给出; 2.可以适当增加细节以使行文连贯; 3.参考词汇:书法calligraphy;鉴赏appreciation. DearPeter Howarethingswithyou Lookingforwardtoyourreply. Yours LiHua
10分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处语言错误每句中最多有两处.每处错误仅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∧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:在错的词下画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. Asafathersatreadingamagazinehisyoungdaughterkeptdisturbhim.Tokeepherbusilyhetoreoutapageonthatamapoftheworldwasprinted.Hecutitintopieceandaskedhertoputthemtogetheragainbyherown. Hewassureshewillneedthewholedaytogetitdone.Butafewminuteslaterthegirlreturnedwithaperfectmap.WhenaskedwhethershediditsoquicklyshesaidThere'saman'sfaceonotherside.Ijustmadethefaceperfecttogetthemapright.Shethenranoutoftoplayleavingthefathersurprising.
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