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如图所示，在xoy坐标系坐标原点O处有一点状的放射源，它向xoy平面内的x轴上方各个方向发射α粒子，α粒子的速度大小均为v0，在0＜y＜d的区域内分布有指向y轴正方向的匀强电场，场强大小为，其中q与...
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高三下学期物理《》真题及答案
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线段ABCD在平面直角坐标系中的位置如图所示O.为坐标原点.若线段AB上一点P.的坐标为ab则直线O
线段ABCD在平面直角坐标系中的位置如图所示O.为坐标原点.若线段AB上一点P.的坐标为ab则直线O
如图所示在直角坐标系xOy的原点O.处有一放射源S.放射源S.在xOy平面内均匀发射速度大小相等的正
如图所示在直角坐标系xOy的原点O.处有一放射源S.放射源S.在xOy平面内均匀发射速度大小相等的正
如图所示在直角坐标系的原点O.处有一放射源向四周均匀发射速度大小相等方向都平行于纸面的带电粒子在放射
坐标原点O.处有一点状的放射源它向xOy平面内的x轴上方各个方向发射α粒子α粒子的速度大小都是v0在
线段ABCD在平面直角坐标系中的位置如图所示O.为坐标原点.若线段AB上一点P.的坐标为ab则直线O
在直角坐标系xOy中以原点O.为极点x轴的正半轴为极轴建立极坐标系.若P.点为直线ρcosθ-ρsi
如图所示在直角坐标系的原点O处有一放射源向四周均匀发射速度大小相等方向都平行于纸面的带电粒子在放射源
如图所示在直角坐标系的原点O.处有一放射源向四周均匀发射速度大小相等方向都平行于纸面的带电粒子在放射
编程时一般选择工件上的某一点作为程序原点并以这个原点作为坐标系的原点建立一个新的坐标系该坐标系称为
刀具坐标系
安装坐标系
工件坐标系
机床坐标系
如图所示匀强磁场方向垂直纸面向里匀强电场方向水平向右直角坐标系xoy的原点O.处有一能向各个方向发射
在直角坐标系xOy中直线l经过点P.－10其倾斜角为α.以原点O.为极点以x轴非负半轴为极轴与直角坐
线段ABCD在平面直角坐标系中的位置如图所示O.为坐标原点.若线段AB上一点P.的坐标为ab则直线O
如图所示在坐标系XOY所在平面内有一半径为a的圆形区域圆心坐标O.1a0圆内分布有垂直XOY平面的匀
编程时普通选取工件上某一点作为程序原点并以这个原点作为坐标系原点建立一种新坐标系该坐标系称为____
刀具坐标系；
安装坐标系；
工件坐标系；
机床坐标系；
如图所示在真空中的一直角坐标系xOy平面内有一个质量为m电量为+q的粒子不计重力从原点O.沿y轴正方
如图所示在坐标系xOy所在平面内有一半径为a的圆形区域圆心坐标O.1a0圆内分布有垂直xOy平面的匀
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10分ErnestHemingwaywasnotonlyacommandingfigurein20th﹣centuryliteraturebutwasalsoapackrat.Hesavedevenhisoldpassportsandusedbullfightticketsleavingbehindoneofthelongestpapertrailsofanyauthor. ErnestHemingway:BetweenTwoWarswhichopensonFridayattheMorganLibrary&MuseumisthefirstmajormuseumexhibitiondevotedtoHemingwayandhiswork.Thelargestandmostinterestingsectionfocusesonthe'20sHemingway'sParisyearsandrevealsawriterwemighthavebeenindangerofforgetting:HemingwaybeforehebecameHemingway. TheexhibitiondoesnotfailtoincludepicturesofthebeardedmanlyHem.He'sshownposingwithsomekuduhehasjustshotinAfricaandonthebridgeofhisbelovedfishingboatthePilarwithCarlosGutiérrezthefishermanwhobecamethemodelforTheOldManandtheSea.Butthefirstphototheviewerseesisabigblowupofahandsomeclean﹣shaven19﹣year﹣oldstandingoncrutches.Thisisfromthesummerof1918whenHemingwaywasrecoveringfromwoundsattheRedCrosshospitalinMilanandtryingtoturnhiswartimeexperiencesintofiction. Theevidenceatthisexhibitionsuggeststhatintheearlydaysheoftenwroteinpencilmostlyincheapnotebooksbutsometimesonwhateverpapercametohand.ThefirstdraftoftheshortstorySoldier'sHomewaswrittenonsheetsheappearedtohavesnatchedfromatelegraphoffice.Theimpressionyougetisofayoungwriterseizedbyinspirationandsometimesbarrelingaheadwithoutanentirelyclearsenseofwhereheisgoing. F.ScottFitzgeraldsomeofwhoseletterswithHemingwayisalsoonviewfamouslyurgedhimtocutthefirsttwochaptersofTheSunAlsoRisescomplainingabouttheelephantinefacetiousnessofthebeginningandHemingwayobligedgettingridofaclunkyopeningthatnowseemsalmostmeta.In1929inanine﹣pagepenciledcritiqueFitzgeraldalsosuggestednumerousrevisionsforAFarewelltoArms.HemingwaytooksomeofthesebutlessgraciouslyandsoonafterwardhisfriendshipwithFitzgeraldcametoanend. ThepapersattheMorganshowaHemingwaywhoisnotalwayssureofhimself.Therearerunninglistsofstorieshekeptfiddlingwithandtherearelistsandlistsofpossibletitlesincludingthe45heconsideredforFarewelland47differentendingsforthenovel. IndisplaycaseafterdisplaycaseyouseeHemingwayduringhisParisyearsinventingandreinventinghimselfdiscoveringashegoesalongjustwhatkindofwriterhewantstobe.Inamoving1925lettertohisparentswhorefusedtoreadInOurTimehissecondstorycollectionhewrites:YouseeI'mtryinginallmystoriestogetthefeelingoftheactuallifeacross﹣notjusttodescribelife﹣orcriticizeit﹣buttoactuallymakeitalive.Sothatwhenyouhavereadsomethingbymeyouactuallyexperiencethething.Youcan'tdothiswithoutputtinginthebadandtheuglyaswellaswhatisbeautiful. BythetimetheSecondWorldWarbrokeoutHemingwayhadsolidifiedintotheiconicfigurewenowremember:Papa.EvenJ.D.Salingercallshimthis.AndablusterycrankyHemingwayappearsin1949whenaboardthePilarhegrabsanoldfishingdiaryandbeginsscrawlinganangrylettertoHaroldRosstheeditorofTheNewYorkercomplainingaboutAlfredKazin'sreviewofAcrosstheRiverandIntotheTreesnotintruthaverygoodbook.ButHemingwayoftendrinkinganddepresseddidn'tknowithisbestworkwasbehindhimbythen. 66.Whichofthefollowingisclosestinmeaningtotheunderlinedwordsapackratpara.1? A.apersonwhoenjoyscollectingthings B.apersonwhocannotbereliedon C.apersonwholikestocollectrubbish D.apersonwhodoesn'twasteanything 67.HowmanyofHemingway'sworksarementionedinthispassage? A.4B.5C.7D.6 68.WecanconcludefromtheMorganshowthatsometimesHemingwaywasaperson A.stubbornbutfullofenthusiasmaboutlove B.unconfidentbutfullofinspirations C.casualbutfullofheroism D.bad﹣temperedbutfullofstrangehabits 69.WhatdoesthewritertrulymeanbysayingHemingwaybeforehebecameHemingway? A.Hemingwaywrotemanymasterpiecesbeforehekilledhimself. B.Hemingwaywasonceawarcorrespondentbeforehebecameafamouswriter. C.HemingwaydevotedallhisstrengthstowritingbeforehewontheNobelPrize. D.Hemingwaykeptexploringtheworldandadjustinghimselfbeforehebecameacommandingfigureinliterature. 70.AccordingtotheMorganshowreadersarelikelytoseeinHemingway'sworks. ①toughmenwhocan'tbedefeated ②anti﹣warfighters ③thedarksideoftheworldaswellasitsbeauty ④loveaffairsbetweenamanandawoman ⑤thestoryofafamilybusiness A.①⑤B.②④C.①③D.③⑤
25分阅读下面的短文然后按照要求写一篇150词左右的英语短文. Whatcanyoudowhenyouareunhappy?Ifyouwanttoletoutyourangerorpressurebybreakingthingsyoujustdo.NowaschoolinNanjinghasbuiltastresswalltohelpstudentswhofeelunhappyduetoheavyschoolworkorforotherreasons. Theleaderoftheschoolsaidtheideaofastresswallstartedwhenfootprintswerefoundonsomenewlypaintedwallsandsomeschoolwindowswerebroken. Thesethingshappenbecausesomestudentsfeellotsofpressurefromtheirstudiesorbecausetheydon'tgetalongwellwithotherstudents.Whenunderstressthebodygetsreadytoeitherrunorfightandbecomesverynervous.Hittingthewallcanhelprelaxthebodyandtakeawaystresshesaid. TestsandhomeworkmakemesadsaidajuniorgirlIcan'twaittohitthewall.Itwillhelpmealotwithmyproblems.Howeveranothergirlstudentwhowouldn'tgivehernamesaidThewallwon'thelpbecauseitcan'ttalkandsheaddedIneedtotalktosomeonewhenI'msad. 【写作内容】 1.以约30个词概括这段短文内容 2.以约120个词就Shouldthestresswallbebulit主题发表你的看法包括以下要点: 1学生的压力来源 2是否该建此墙并说明理由 3提供一些其他有效的减压方法. 【写作要求】 1.可以参照阅读材料但不得直接引用原文的句子 2.作文中不得出现真实的姓名和学校名称. 【评分标准】 概括准确语言规范内容合适篇章连贯.
8分Kids'FleetSummerDayCamp Summercampisalotoffunwhenyou'reaKids'FleetCamper!Kids'Fleetisanexcitingandfun﹣filledSummerDayCampwithrockclimbinggolfingswimmingcreativeactivitiesandoutdoorentertainment! Kids'FleetSummerDayCamprunsforselectweeksduringthesummer.PleasecheckbackinFebruary2016fordatespricesandinformationforKids'FleetSummerDayCamp2016. Registration登记: Begins:March72016 Need:﹩100deposit定金andcompletedRegistrationForm 2016CampAgeRequirements:6﹣14yearsoldchildren InPerson:Firstcomefirstserveregistrationservice Mailingisanoption选择: 720ProudfootLane LondonONN6H5G5 Ifyouhaveanyquestionspleasecall: 519﹣472﹣9310x233RoseTucker﹣CampManager WhatdidKids'FleetParentsfrompastyearshavetosayaboutKids'FleetSummerDayCamp? Mysonthoughtthatthecamphadjustthefightamountofactivitiestokeepthechildreninterested.Therockclimbinggolfingaswellastheoutdooractivitiesandswimmingwereperfect.Hewasveryfiredbutinagoodway.MysonwantstoreturnnextyearandIwillrecommend推荐thiscamptoothers. ﹣Mrs.White Ithinkthisisoneofthebestdaycampsifnotthebestthatmychildrenhavetakenpartha.Thepeopleinchargeofthecamparewarm﹣heartedandfriendly.Theprogramisexcellentanditistheonlycampthattheyaskustogobackto. ﹣KristinandDoug Mychildrenhadanexcellenttimeatyourcamp.Iwasveryimpressedwithbothyourfriendlyhelpfulstaffandtheexcellentwaythattheentirecampwasorganizedandrun.IMilrecommendittomyfriendsandcallconsidernextyear! ﹣JosephMcRae Oneofthebestorganizedsummercampswe'veeverexperienced.I'mgladthatmychildwasinasaferesponsibleandfunenvironment. ﹣GeorgeKerhoulas 29.Togetmoreinformationaboutthecampyoucan. A.pay﹩100inadvance B.callthemanagerofthecamp C.sendane﹣marltothecamp D.askregistrationservicefirst 30.Whatisparents'attitudetothecamp? A.Favorable. B.Uncaring. C.Doubtful. D.Negative. 31.Itcanbelearnedfromthelastpartofthetextthat. A.Kristinthoughtthecampwasthebestcampintheworld B.JosephMcRaehadagoodtimeatthecamplastyear C.Mrs.White'ssonmayattendthecampin2016 D.GeorgeKerhoulasthoughtsomeactivitiesweredangerous 32.Wheredoesthistextprobablycomefrom? A.Asciencefiction. B.Astudent'snewspaper. C.Asportsmagazine. D.Atravelbook.
6分HowandwhendidAustraliabegin?ItisbelievedthatAustralianhistorybeganattheendoftheeighteenthcentury.AfterseveralcenturiesofEuropeanvoyaginginthesouthernoceanstheEnglishnavalofficerJamesCooksailedtheeasterncoastin1770nameditNewSouthWalesandtookpossessionofitinthenameofhisking.WithintwentyyearstheBritishgovernmentsentateamofexplorerstosettleinNewSouthWales.On26January1788itscommanderArthurPhillipbegantoruleovertheeasternhalfofthecountry.SeveralthousandofficerssoldiersofficialsandcriminalswhocameashorefromtheelevenshipsoftheFirstFleetanchored停泊intheportofSydney.Theypreparedthewayforlaterimmigrantswhospreadoutoverthecontinent. ThisisastoryofasleepinglandbroughttolifebyEndeavourthenamegiventoCook'sshipandthequalitygiventothosewhofollowedhim. Thenewcomersbroughtwiththemdomesticanimalsplantsandtools.Theyalsobroughtwiththemnewideas.ThataccomplishmentinturnshapedwhatAustraliaisnow. ~33.TheeasterncoastofAustraliawasnamedNewSouthWalesin1770.Whodidit? A.JamesCook. B.ArthurPhillip. C.GeorgeWashington. D.WilliamShakespeare. 【考点】历史文化类阅读 【分析】本文属于说明文阅读作者通过这篇文章主要向我们描述了澳大利亚的历史介绍. 【解答】A.细节理解题.根据第一段theEnglishnavalofficerJamesCooksailedtheeasterncoastin1770nameditNewSouthWalesandtookcontrolofitinthenameofhisking可知澳大利亚东部海岸于1770被命名为新南威尔士是杰姆斯库克做的故选A. 【点评】此类题型主要考查学生的细节理解和推理判断能力.细节理解题是针对文中某个细节某句话或某部分具体内容设置问题所以在做细节理解题时要结合原文和提干有针对性的找出相关语句进行仔细分析再结合选项选出正确答案.在做推理判断题时不要以个人的主观想象代替文章的事实要联系上下文根据文章事实进行合乎逻辑的推理判断. 【备注】1#1#1#A 34.AccordingtothispassagetheBritishgovernmentsentateamofexplorerstosettleinNewSouthWaleswithinyears. A.twelve B.twenty C.sixteen D.eighteen 35.ArthurPhillipinthispassageisreferredtoaswhobegantoruletheeasternhalfofthecountryin1788. A.anarmyofficer B.arichbusinessman C.apoorfarmer D.auniversitystudent.
25分母亲节将至兰陵四中组织全校学生进行此主题的英语演讲比赛.你很愿意参加请写一篇参加演讲比赛的演讲稿题目自拟.内容包括: 1对母亲的介绍 2描述和母亲的一次经历 3表达对母亲的感激 注意:1.词数:100左右 2.参考词汇:母亲节Mother'sDay.
15分Thereweretwoguyswholikedtoexploreeverything.Onedaythesetwomenweregoing61hikewhentheycameuponanoldabandonedwell.Curiousaboutitsdepththeythrewasmallstoneintothewelland62waitforthesoundofitstrikingthebottombuttheyheardnothing.Theywentandgotabiggerrock63throwitinandwaited.Stillnothing.Theysearchedtheareaforsomething64largeandfoundarailroadtie.Withgreat65difficultthetwomencarriedittotheopeningandthrewitin.Whilewaitingforittohitthebottomagoat66suddenrushedbetweenthemandjumpedintothehole! Theguyswerestillstandingtherewith67astonishlooksupontheirfacesfromtheactionsofthegoat68amanwalkeduptothem.Heaskedthem69theyhadseenagoatanywhereintheareaandtheysaidthatonehadjustjumpedintothewellinfrontofthem!ThemanrepliedOhno.Thatcouldn'tbemygoat.Minewastied70arailroadtie. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
8分Themostcomplexobjectknowntohumanityisthehumanbrain﹣andnotonlyisitcomplexbutitisoneofthefewnaturalphenomenathatsciencehasnoconsciousnessof.Totrytoreplicate复制somethingthatissopoorlyunderstoodmaythereforeseemlikepride.ButyouhavetostartsomewhereandInternationalBusinessMachinesIBMandtheEcolePolytechniqueFederaledeLausanneEPFLinSwitzerlandproposetostartbyreplicating'insilico'oneofthebrain'sbuildingblocks.Inapartnershipannouncedthetwoorganizationssaidtheywouldbeworkingtogethertobuildasimulation模拟ofastructureknownasaneo﹣cortical新大脑皮质的columnonatypeofIBMsupercomputerthatiscurrentlyusedtostudythemolecularfunctioningofgenes.Ifthatworkstheyplantousemorepowerfulcomputerstolinksuchsimulatedcolumnstogetherintosomethingthatmimics模仿abrain.Inarealbrainaneo﹣corticalcolumnisacylindrical圆柱形的elementaboutathirdofamillimeterindiameterandthreemillimeterslong.Itisthesecolumnsarrangedsidebysidelikethecellsofahoneycombwhichmakeupthefamous'greymatter'thathasbecomeshorthandforhumanintelligence.TheBlueGene/Lsupercomputerthatwillbeusedforthesimulationconsistsofenoughindependentprocessorsforeachtobeprogrammedtomimicanindividualnervecellinacolumn.TheEPFL'scontributiontotheBlueBrainProjectwillbetocreateadigitaldescriptionofhowthecolumnsbehave.ThedatabasefromitsBrainMindInstitutewillprovidetherawmaterialforthesimulation.Biologistsandcomputerscientistswillthenconnecttheartificialnervecellsupinawaythatmimicsnature.Theywilldosobyassigningelectricalproperties电能tothemandtellingthemhowtocommunicatewitheachotherandhowtheyshouldmodifytheirconnectionswithoneanotherdependingontheiractivity.Thatwillbenomeanfeat.Evenasinglenervecelliscomplicatednotleastbecauseeachonehasabout10000connectionswithothers.Andnervecellscomeingreatvariety﹣relyingforexampleondifferentchemicaltransmitterstocarrymessagesacrossthoseconnections.EventuallyhoweveradigitalrepresentationofanentirecolumnShouldoccur.AssumingthatthegrowthofcomputingpowercontinuestofollowMoore'sLawtheleaderofIBM'ssidethinksitshouldbepracticaltomimicanentirehumanbraininsilicothiswayintentofifteenyears.Suchanartificialbrainwouldofcoursebeapowerfulresearchtool.Itwouldallowneurologicalexperimentsthatcurrentlytakedaysina'weblab'tobeconductedinseconds.Theresearchershopethattheirsimulatedbrainwillrevealthesecretsofhowcertainpsychiatricandneurologicaldisordersdevelop.Butthatisprobablynottherealreasonfordoingit.Themostinterestingquestionsurelyiswhethersuchanartificialbrainwillbeintelligentorconsciousorboth. 59.Inarealbrainaneo﹣corticalcolumn.A.containsalargenumberofnervecellsB.isasimulationofastructureC.isthefamous'greymatter'D.lookslikethecellsofahoneycomb 60.Whatdoestheunderlinedsentence'Thatwillbenomeanfeat'inParagraph5indicate?A.Thefunctionofchemicaltransmittersishardtounderstand.B.Itisratherdifficulttoconnecttheartificialnervecellsup.C.Adigitalrepresentationofanentirecolumnistime﹣consuming.D.Asinglenervecelliscomplicatedtoidentifyacrossconnections. 61.Thefundamentalpurposeofdoingtheresearchisprobably.A.tosimulateanentirehumanbraininsilicoB.totellushowsomecertaindisordersemergeC.todiscoverhowtheartificialbrainwouldworkD.toexaminewhetherMoore'sLawisstillfunctioning 62.Whattypeofwritingisthispassage?A.AsciencefictionB.AcomputeradvertisementC.AnofficialdocumentD.Aresearchreport.
8分Aratlookedthroughacrackinthewalltoseethefarmerandhiswifeopeningapackage.Whatfoodmightitcontain?Hewasalarmedtodiscoverthatitwasarattrap捕鼠夹. Goingbacktothefarmyardtheratgaveawarning:Thereisarattrapinthehousearattrapinthehouse!Thechickenraisedherheadandsaid:ExcusemeMrRatIcantellthisisabigconcerntoyoubutitisofnobusinesstome.Icannotbebotheredwithit. Theratturnedtothepigandtoldhim:Thereisarattrapinthehousearattrapinthehouse!IamsoverysorryMr.RatsympathizedthepigbutthereisnothingIcandoaboutitbutpray.Iwillmakesurethatyouareinmyprayers. Theratturnedtothecow.ShesaidLikewowMr.Rat.Arattrap.Iamingravedanger.Duh? Sotheratreturnedtothehouseheaddownanddejectedtofacethefarmer'srattrapalone. Thatverynightasoundwasheardthroughoutthehouselikethesoundofarattrapcatchingitsprey猎物.Thefarmer'swiferushedtoseewhatwascaught.Inthedarknessshedidnotseethatitwasapoisonoussnakewhosetailthetraphadcaught.Thesnakebitthefarmer'swife. Thefarmerrushedhertothehospital.Shereturnedhomewithafever.Noweveryoneknowsyoutreatafeverwithfreshchickensoupsothefarmertookhishatchet短柄斧tothefarmyardforthesoup'smainingredient. Hiswife'ssicknesscontinuedsothatfriendsandneighborscametositwithheraroundtheclock.Tofeedthemthefarmerkilledthepig. Thefarmer'swifedidnotgetwell.Shediedandsomanypeoplecameforherfuneralthatthefarmerhadthecowkilledtoprovidemeatforallofthemtoeat. Sothenexttimeyouhearthatsomeoneisfacingaproblemandthinkthatitdoesnotconcernyourememberthatwhenthereisarattrapinthehousethewholefarmyardisatrisk. 25.TheunderlinedworddejectedinParagraph5isclosestinmeaningto. A.disappointed B.surprised C.confused D.doubtful 26.WhichofthefollowingstatementsisTRUEaccordingtothearticle? A.Thechickenshowedgreatconcernfortherat. B.Thepighelpedtheratgetridofthetrap. C.Thecowdidn'tcareaboutwhattheratsaid. D.Thesnakewaskilledafterbeingcaughtinthetrap. 27.Wecanconcludefromthearticlethat. A.thefarmer'swifegotgoodtreatmentinthehospital B.thefarmerregrettedsettinguptherattrap C.theratwasverywiseinavoidingthetrap D.noneoftheotheranimalsfeltthreatenedbytherattrap 28.Whatmessagedoesthestoryintendtoconvey? A.Weshouldmindourownbusiness. B.Everythingisrelatedtosomethingelse. C.Helpingothersisalwaysavirtue. D.Weshouldtreatanimalsinafriendlyway.
在真空中AB两点分别放有异种点电荷+Q和﹣2Q以AB连线中点O为圆心作一圆形路径abcd如图所示则下列说法正确的是
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10分TodriveoutyourBackPain Isyourbackbotheringyouandareyouwonderinghowtogetridofyourhackpain?IfthephraseOuchmyback!isaregularpartofyourlifeyou'renotalone:65millionAmericanssufferfrombackpain.36 1.StandBetter Standingforlongperiodscanbestressfulonyourlowerback.Ifyouhavetostandforworktryplacingonefootonastoolorotherlowobjects.37Thiswillhelptakethepressureoffyourlowerback.Wearingcushionedshoesorstandingonathickrubbermatcanalsohelprelievepressurewhenyouhavetostandforlonghours. 2.StartExerciseGradually 38Butifyou'vebeeninactiveforawhilestartslowly.Beginwithalow﹣impactexercisesuchaswalkingstationarybikingorswimmingforabout30minutesaday.Addinggentlestretchingoryogamayalsohelpyourmuscles. 3.SitComfortably Ifyourjobrequiresyoutositforlongperiodsmakesureyourchairhasastraightbackanadjustableseatandarmrests.39Ifyouneedextrasupportplacearolledtowelbehindthelowerpartofyourback.Restingyourfeetonalowstoolcanalsohelpeasebackpainwhensitting. 4.ChoosetheBestSleepPosition Sleepingonyoursideisthemostcommonsleepingposition.Placingasmallpillowbetweenyourkneeshelpskeepthebackinagoodposition.Ifyoumustsleeponyourbacktryusingapillowunderyourknees.Avoidsleepingonyourstomachasthiscanmakebackpainworse. 40 Carryingextraweightonyourbodymeansmoreworkforyourlowerbackmuscles.Thisisespeciallytrueiftheextrapoundsarearoundyourwaist.Theheavieryouarethemoreimpactthereisonyourbackwitheachstep.Losingweightcanalsohelpprotectthemusclesandjointsinyourkneesandhips. A.Thenchangefeeteverysooften. B.Don'tpushwithstraightarms. C.Yourworkstationcanaffectyourback'shealth. D.KeepYourWeightDown E.Somepeopleprefermoresupportthanothers. F.Herearesomeideasforyoutopreventthepain. G.Exerciseisagreatwaytokeepyourbackhealthy. 36. 37. 38. 39. 40.
1分Itisanywonderthathisfrienddoesn'tlikewatchingtelevisionmuch. A.hopefully B.merely C.nearly D.hardly
如图所示匀强电场场强方向与水平方向夹角为θ＝450场中有一质量为m电荷量为q的带电小球用长为L的细线悬挂于O点．当小球静止平衡时细线恰好水平．现用一外力将小球沿圆弧缓慢拉到竖直方向最低点小球电荷量不变则在此过程中
1分WithoutthetwoassistantsatmycommandIthedeadline. A.wouldn'tmeet B.wouldn'tbemet C.wouldn'thavemet D.wouldn'thavebeenmet
如图所示用轻质活塞在气缸内封闭一定质量的理想气体活塞与气缸壁之间的摩擦忽略不计．开始时活塞距气缸底的高度为h1＝0.50m气体温度为t1＝27℃．给气缸加热活塞缓慢上升到距气缸底的高度为h2＝0.80m处时缸内气体吸收Q＝450J的热量．已知活塞横截面积S＝5.0×10﹣3m2大气压强P0＝1.0×105Pa．求①加热后缸内气体的温度．②此过程中缸内气体增加的内能△U．
25分你班将于12月30日晚上7点在学校礼堂auditorium举行新年英语晚会.假设你是班长请你根据以下要点用英语在班级QQ群里发一则通知布置相关事宜.内容应包括: 1.每个同学准备一个英语节目 2.积极参加游戏 3.做文明观众… 注意: 1.词数100左右 2.开头和结尾已为你写好. Boysandgirls . That'sall.Thankyou.
1分Joanisalwaysopentonewideasandenjoysnewwaysofdoingthings. A.tryingout B.figuringout C.lettingout D.thinkingout
2分Wemet偶然attheairport.
2分Mybrotheristoofatandhewantsto减肥.
1分Fromthemomentbabiesarebornpatentsarehelpingthemtobereleasedintotheworldnottothemortocontroltheirlivesfortherestoflife. A.holdonto B.putupwith C.giveinto D.breakupwith
我校开展学生自己动手进行实验操作的活动．同学们现要测定电阻Rx的阻值电阻值约为100Ω以及一节干电池的电动势和内阻内阻约为2Ω除此之外还备有如下器材A．电压表V量程为2V内阻较大B．电阻箱R1总阻值为9999.9ΩC．开关导线若干1为了较准确地测定Rx的电阻值电池的电动势和内阻王华同学选择如图1所示的电路．2王华同学根据电路图连接实物图后测定电阻Rx时主要进行了两步实验．第1步闭合S1和S3断开S2记录电压表示数U1第2步闭合S1和S2断开S3调节R1使电压表示数仍为U1记录此时R1的阻值r2则被测电阻Rx的电阻值为．3通过改变电路的总电阻记录外电阻的总电阻值R和对应情况下的电压表示数U画出随变化的图线为直线如图2所示直线与纵轴的交点坐标为b斜率为k则电源电动势为内阻为从实验原理来看实验测量值与真实值相比较电动势内阻后两空填偏大偏小或不变．
20分Iwalkedoutonmyporchthismorningtothewonderfulsightofthesunrisingoverthemountains.Ismiledasitsgoldenbeams36theclearbluesky.Mylightjacketwasunbuttonedandthemorningbreezefeltwarmandconforting.Thetreeswerestillbareofanybuds37Icouldfeelasenseofthecoming38onthiswinterday.IbreathedinthefreshairandthankedGodforthisgloriousdaytobealive. Ithoughttheonlyonething39thatwouldmakethisaperfectmoment:alittlemorning40. ThensuddenlyIheardit.Godhadgrantedmy41.Themorningmusichadarrived.Itwasthefirstbirdsongsoftheyear.Afterthecoldandsilentmorningsofwinter42couldhavesoundedsweeter.Themusicwascomingfromeverydirection.Thebirdsweresingingfor43forjoyandforGod. Theywerecallingonspringtohurryalongandlifeto44thisworldoncemore.Istoodstillandjustlistened.Icouldfeelmyownsoul45toHeaven'sjoyandmyownheartfillingwithGod'slove.It46wasaperfectmoment. Sometimesweall47theharshnessofwinterinourlives.Sometimesweallfeel48deadandquietinside.Sometimesweall49wherethemusichasgone.Itisthenhoweverthatweneedtotellthelittlebirdinoursoulstosing50.ItisthenthatweneedtoaskGodto51uswithhisloveandhismusic.Itisthenthatweneedtoawakenour52springandshareitslifeandwarmthwiththeworld. Ihopethatyoualways53thetimetohearthebirdssinginginthetreesandthebirdsinginginyoursoul.Ihopethatyoufillyourdayswithsongsofjoy54ofloveandthoughtsofGod.Ihopethatyou55everydayofyourlifeherewithalittlemorningmusicandcarryitsheavenlymelodyinyourheartalldaylong. 36.A.litup B.putup C.tookup D.sentup 37.A.and B.so C.for D.but 38.A.warmth B.excitement C.spring D.moment 39.A.sweet B.missing C.glorious D.tough 40.A.sunlight B.greeting C.bird D.music 41.A.morning B.thought C.wish D.song 42.A.nothing B.it C.all D.little 43.A.food B.love C.comfort D.friendship 44.A.turnover B.returnto C.passby D.sweepup 45.A.awakening B.reacting C.contributing D.referring 46.A.eventually B.truely C.fortunately D.approximately 47.A.getover B.getthrough C.goover D.gothrough 48.A.disappointed B.cold C.scared D.ashamed 49.A.understand B.appreciate C.wonder D.conclude 50.A.afterall B.onceagain C.forgood D.sofar 51.A.inspire B.equip C.provide D.fill 52.A.promising B.longing C.inner D.coming 53.A.risk B.save C.kill D.take 54.A.commitments B.acts C.occasions D.attacks 55.A.devote B.replace C.start D.spare.
15分I'm56onlydaughterofmyparentssotheyareworried57everythingIdo.Forexample58Iridemybikemyparentswon'tletme59ridebymyself.TheyareafraidImightfalloffmybikeandhurt60.Theyaretakinggreattroubletosupportthebikewithmymothereven61carryafirst﹣aidbox.I'mnotfreetorideandIoftensay62angrywhynotletmeridealone? Nowmostfamilieshaveonechild.Parentswanttodoeverythingfortheirchildren.Thisdoesnogood63them.Toomuchlovefromparentsmaypreventchildrenfrom64beindependent.Inmyopinionparentsshouldlettheirchildrendo65theyshoulddoalone. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65.
2分Childrenshouldnotbeallowedtowatch激烈的暴力的movies.
1分﹣﹣﹣HiTom.DoesJohnhaveanyhobbies? ﹣﹣﹣swimmingwillappealtohimmoststrongly. A.Ifanything B.Ifever C.Ifany D.Ifso
如图所示间距为L的水平平行金属导轨上连有一定值电阻阻值为R两质量均为m的导体棒ab和cd垂直放置在导轨上两导体棒电阻均为R棒与导轨间动摩擦因数均为μ导轨电阻不计最大静摩擦力等于滑动摩擦力整个导轨处在竖直向下的匀强磁场中磁感应强度为B．现用某一水平恒力向右拉导体棒ab使其从静止开始运动当棒ab匀速运动时棒cd恰要开始滑动从开始运动到匀速的过程中流过棒ab的电荷量为q重力加速度为g求1棒ab匀速运动的速度大小2棒ab从开始运动到匀速运动所经历的时间是多少3棒ab从开始运动到匀速的过程中棒ab产生的焦耳热是多少
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