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2017年4月22日，货运飞船“天舟一号”升入太空和“天宫二号”完成第一次交会对接．高氯酸钾（KClO4）可用作火箭推进剂，如表是高氯酸钾在不同温度时的溶解度．下列说法正确的是（ ）
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如图所示2017年4月22日天舟一号货运飞船与天宫二号太空舱顺利对接对对接过程中天宫二号的飞行速度
2017年4月22日天舟一号货运飞船与天宫二号空间实验室首次完成自动交会对接如图4所示天舟一号与天宫
“天舟一号”相对于“天宫二号”是运动的
“天舟一号”和“天宫二号”相对于地球是运动的
“天舟一号”相对于地球是静止的，“天宫二号”相对于地球是运动的
“天舟一号”相对于地球是运动的，“天宫二号”相对于地球是静止的
2017年4月20日天舟一号货运飞船发射升空22日与天宫二号太空舱顺利对接．如图所示对接过程中天舟
2017年4月20日中国首个货运飞船天舟一号在海南文昌发射升空升空后天舟一号与空间站天宫二号成功实现
地球
“天舟一号”
“天宫二号”
太阳
2017年4月20日长征七号火箭成功将中国首艘货运飞船天舟一号顺利发射升空在火箭离地上升的初始阶段
4月22日货运飞船天舟一号与空间站天宫二号成功对接．对接后以天宫二号为参照物天舟一号处于状态．由于
一.阅读下文完成综合性学习活动12分太空快递小哥天舟一号升空带了防晒霜高科技货包确保货物安全抵达天宫
2017年4月20日中国首个货运飞船天舟一号在海南文昌发射升空升空后天舟一号与空间站天宫二号成功实现
地球
“天舟一号”
“天宫二号”
太阳
2017年4月22日12时23分天舟一号货运飞船与天宫二号空间实验室顺利完成自动交会对接这是天宫二
较多的热量
较大的内能
较大的比热容
较大的热值
4月22日货运飞船天舟一号与空间站天空二号成功对接．对接后以天宫二号为参照物天舟一号处于状态．由于外
三实用类文本阅读本题共3小题12分阅读下列材料完成7-9小题材料一天舟一号货运飞船于2017年4月2
三实用类文本阅读本题共3小题12分阅读下面的文字完成7～9题材料一天舟一号货运飞船于2017年4月2
2017年4月19日19时41分搭载航天快递小哥天舟一号货运飞船的长征七号遥二运载火箭发射成功飞船与
2017年4月27日我国成功发射的天舟一号货运飞船与天宫二号空间实验室完成了首次交会对接对接形成的
“组合体”比“天宫二号”加速度大
“组合体”比“天舟一号货运飞船”角速度大
“组合体”比“天宫二号”周期大
“组合体”比“天舟一号货运飞船”机械能大
2017年4月20日19时41分载有号称航天快递小哥﹣﹣天舟一号货运飞船的长征七号遥二运载火箭发射
4月22日货运飞船天舟一号与空间站天宫二号成功对接对接后以天宫二号为参照物天舟一号处于状态由于外太空
2017年4月22日12时23分天舟一号与天宫二号顺利完成自动交会对接．这是天舟一号与天宫二号进行的
2017年4月20日搭载着天舟一号货运飞船的长征七号运载火箭在海南文昌发射中心升空天舟一号进入太空后
火箭升空时，“天舟一号”的重力势能不变
对接成功后，以“天宫二号”为参照物，“天舟一号”是静止的
“天宫二号”的太阳能电池板工作时将光能转化为化学能
“天舟一号”进入太空后，质量减小
2017年4月22日天舟一号货运飞船与天宫二号成功对接如图天舟一号的任务之一是将储箱内的推进剂液态燃
2017年4月20日天舟一号货运飞船发射升空22日与天空二号太空舱顺利对接.如图所示对接过程中天舟一
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“虚拟试衣镜”亮相南京国际软件产品博览会该款“虚拟试衣镜”解决了购物者很难观察到试穿衣服时背面的情况摄像头能够监视顾客的移动并将衣服的背面展现给他们如图监视顾客移动的摄像头相当于一个镜顾客离摄像头的距离应在的范围．
下列关于力的说法中错误的是
I'velovedmymother'sdesksinceIwasjusttallenoughtositabovethetopofit.Mothersatwritingletters.Standingbyherchairlookingattheinkbottlepensandwhitepaper.Idecidedthattheactofwritingmustbeamostwonderfulthingintheworld. Yearslaterduringherfinalillness.Motherkeptdifferentthingsformysisterandbrother.Butthedesk.ShesaidagainisforElizabeth. Ineversawherangryneversawhercry.Iknewshelovedme;sheshowedinaction.ButasayounggirlIwantedtohaveheart﹣tohearttalksbetweenmotheranddaughter. Theyneverhappened.Andagulfopenedbetweenus.Iwastooemotional易动感情的.Butshelivedonthesurface表面. AsyearspassedandIhadmyownfamily.Ilovedmymotherandthankedherforourhappyfamily.Iwrotetoherincarefulwordsandaskedhertoletmeknowinanywayshechosethatshedidforgiveme. Myhopeturnedtodisappointmentthenlittleinterestandfinallypeaceitseemedthatnothinghappened.Icouldn'tbesurethattheletterhadevengottoMother.IonlyknewthatIhadwrittenitandIcouldstoptryingtomakeherintosomeoneshewasnot. Butthepresentofherdesktoldmeasshe'dneverbeenabletothatshewaspleasedthatwritingwasmychosenwork.Icleanedthedeskcarefullyandfoundsomepapersinsideaphotoofmyfatherandaone﹣paperletterfolded折叠andrefoldedmanytimes.Itwasmyletter. InanywayyouchooseMotheryoualwayschosetheactthatspeakslouderthanwords. 1Thewriterbegantolovehermother'sdesk. A.afterMotherdied B.beforeshebecameawriter C.whenshewasachild D.whenMothergaveittoher 2Thepassageshowsthat. A.Motherwascoldonthesurfacebutkindinherhearttoherdaughter B.Motherwastooseriousaboutherdaughterinwords C.Motherwrotetoherdaughterincarefulwords D.Motherwrotetoherdaughterincarelesswords 3Theunderlinedwordgulfinthepassagemeans. A.deepunderstandingbetweentheoldandtheyoung B.differentideasbetweenmotheranddaughter C.freetalksbetweenmotheranddaughter D.partoftheseagoingfarinland 4What'sbesttitleofthepassage? A.MylettertoMother. B.Motherandchildren. C.Mymother'sdesk. D.TalksbetweenMotherandme.
Ithinkthathisadviceiswellworth. A.valuing B.tobevalued C.ofbeingvalued D.values
卫星通信移动通信都是利用电磁波来传递信息的电磁波家族里有无线电波红外线可见光紫外线等．下列说法正确的是
Iwasjustabouttogooutthephonerang. A.while B.as C.when D.since
HelloI'mSevernSusukispeakingforE.C.O.﹣theEnvironmentalChildren'sOrganization. Weareagroupoftwelveandthirteen﹣year﹣oldsfromCanadatryingtomakeadifference.Weraisedallthemoneytocomehereourselvestocomefivethousandmilestotellyouadultsthatyoumustmakeachange.I'mheretospeakforallthegenerationstocome.I'mheretospeakonbehalfofthestarvingchildrenaroundtheworldwhosecriesgounheard.I'mheretospeakforthecountlessanimalsdyingacrossthisplanetbecausetheyhavenowherelefttogo. I'mafraidtogooutinthesunnowbecauseoftheholesintheozone.I'mafraidtobreathetheairbecauseIdon'tknowwhatchemicalsareinit.IusedtogofishingwithmydadinVancouvermyhometownuntiljustafewyearsagowhenwefoundthefishfullofcancers.Andnowwehearaboutanimalsandplantsgoingextincteveryday﹣disappearingforever. InmylifeIhavedreamedofseeingthegreatnumberofwildanimalsjunglesandrainforestsfullofbirdsandbutterfliesbutnowIwonderiftheywillevenexistformychildrentosee. Didyouhavetoworryaboutthesethingswhenyouwereatmyage?Allthisishappeningbeforeoureyesandyetweactasifwehaveallthetimeandallthesolutions. HereyoumaybegovernmentofficialsbusinesspeopleorganizersreportersorPoliticians﹣butfirstofallyouaremothersandfatherssistersandbrothersauntsanduncles﹣andeachofyouissomebody'schild. I'monlyachildyetIknowweareallpartofafamily.Weshouldactasonesingleworldtowardsonesinglegoal. 1WhydoesSusukicomeheretospeak? A.ToencouragemorechildrentojoinE.C.O. B.ToshowtheachievementsE.C.O.hasmade. C.Tocallformoreeffortstoprotecttheenvironment. D.ToraisemoneyforthewildlifeinCanada. 2Whydoesthewriternolongergofishinginhishometown? A.Fishingdoesharmtotheenvironment. B.Thenumberoffishisdecreasing. C.FishingisnownotallowedinVancouver. D.Fisharefoundsufferingfrompollution. 3Whatdoestheunderlinedsentencesuggest? A.Theenvironmenthasbecomeworsethanbefore. B.Childreninthepastlivedahappierlife. C.Growingolderhumansdamagetheenvironmentmore. D.Todaychildrenaredoingwhatadultsshoulddo. 4Whoisthespeechdeliveredto? A.Twelveandthirteen﹣year﹣olds. B.Powerfulorinfluentialadults. C.ParentsofthekidsofE.C.O.. D.PeoplehelpedbyE.C.O..
往某容器中匀速注入水直至注满容器底部受到水的压强随时间变化的曲线如下图所示则容器的形状可能是下列的
如图所示是小红自制的吸管风笛当向吸管口吹气时长短不一的吸管会发出不同的声音．这里的不同指的是声音的
分析如图所示的图象下列关于图象信息的说法中正确的是
在测定小灯泡的额定功率的实验中小雨同学选用一个电压表一个电流表一个开关电压为3V的电源额定电压为2.5V电阻约为8Ω的小灯泡和一个标有20Ω1.5A的滑动变阻器进行实验．1请用笔画线代替导线将图甲中的实物电路连接完整．要求当滑动变阻器的滑片向左移动时电流表的示数增大．连线不得交叉选择电流表合适的量程2实验中小雨改变滑动变阻器的阻值多次测量通过小灯泡的电流和它两端的电压根据记录的数据小雨画出了小灯泡电流随其两端电压变化的关系图象如图乙根据图象提供的信息计算出小灯泡的额定功率为W．3另一组的同学在实验时无论如何移动滑动变阻器的滑片P电压表电流表示数均不变小灯泡发光暗淡出现这种现象的原因可能是．
Harmonium簧风琴isabookofpoetrybyAmericanpoetWallaceStevens1879﹣1955.Itwashisfirstbookpublishedin1923.Thebookisacollectionof85poemsdifferentinlengthfromjustafewlinestoseveralhundred. EducatedatHarvardUniversityandNewYorkLawSchoolWallaceStevenslivedinHartfordConnecticutformostofhislifeworkingataninsurancecompany.Hewrotepoemsintheeveningsandonhiswaytoandfromwork.Harmoniumisanunusualbookofhis﹣hisfirstbookitdidn'tcomeoutuntilhewas44yearsoldrepresentingthecumulative累积的poeticworksofhislifeupuntilthatpoint. NowconsideredoneofthegreatestcontributionstomodernpoetryHarmoniumwasnotfullyrecognizeduntilthelastyearsofStevens'life.Harmoniumisalsounusualinbeingentirelysong﹣likeandmusical.Itisamixofnotonlypureandphilosophical哲学的thoughtsbutalsoimaginaryanddisorderedlinesofwords.TomostreadersHarmoniumisespeciallygoodinthevariouswaysStevensputhisthoughtsinpoetry.Therearepopularshortpoemsfullofimaginativedetailsandattentiontosoundandtherearelongerandmorephilosophicalpoemswiththeweightandimportanceofepicpoetry史诗. AlthoughmanyofthepoemshewrotethroughouthislifetimeareaboutthenaturalbeautyofConnecticuthispoemscameoutperhapsmoretrulyfrominsideanimaginativepoeticbeautyashewrote IwastheworldinwhichIwalkedandwhatIsawOrheardorfeltcamenotbutfrommyself; AndthereIfoundmyselfmoretrulyandmorestrange. 1WhyisHarmoniumanunusualbookofthewriter? A.Itwashisfirstandonlybook. B.Itcameoutinhislastyearsoflife. C.Itwasaresultofhispart﹣timejob. D.Itshowshisyearsofworkonpoetry. 2AsagreatworkofmodempoetrywhatisspecialofHarmonium? A.Itisacollectionofonly85poems. B.Itfirstputsphilosophicalthoughtsinpoetry. C.Variousinformthepoemsallsoundbeautiful. D.Connecticutbecomesbelterbecauseofthepoems. 3Whichofthefollowingcanbethebesttitleofthetext? A.WallaceStevensaspecialpoet. B.Ahobbymakesabrilliantpoet. C.Harmoniumbeautifulmodempoetry. D.ToknowConnecticutreadHarmonium.
如图所示是某家庭电路闭合开关灯不亮用试电笔接触c点氖管不发光接触d点氖管发光．则该电路的两处故障分别是．
LiMingwenttotheparkinlastSaturdayafternoonafterhehadalreadyfinishedhishomeworks.Hesawseveralboysskatinginthepondhappily.Suddenlyheheardacryforhelp.Lookedaheadhefoundoneoftheboyshadfallenintothewater.LiMingjumpedintoicywaterimmediatelyandtriedtopulltheboytosafety.Thentheboywasgivenfirstaidbutsooncametomyself.Theboy'sparentscamesoonaftertheyreceivedthephonecall.TheywereverymuchthankfulLiMingwhowastremblingtherewithcold.
如图所示的实验能说明
如图所示OB是以O点为支点的杠杆F是作用在杠杆B端的力G表示OB受到的重力．图中线段AB与力F的作用线在一条直线上且OA⊥ABAC⊥OB则
Englishisalanguagesharedbyseveraldiversecultureseachofusesitsomewhatdifferently. A.which B.what C.them D.those
Whatdoyoungpeoplethinkaboutthefutureofurbanlife?Ateacherat1universityaskedhisstudentstothinkabout2theywouldrunacityintheyear202.Herearesomeoftheirideas.Inthefuturecityallshoppingwill3doonlinesoshoppingmallswillnolongerexist.Allcarswillbepoweredby4electricsolarenergyorwind.Seniorcitizensandpeoplewith5disabilitywillbeabletogoanywhereintheworldusinghigh﹣techcameras6attachtotheirheads.Travelinginspacewillbecommonandeachcitywillhave7itownspaceport.What'smoreallformsofrecreationsuchas8gotothecinemaandplayingbowlingwillbefreeofcharge.Acrazyideatofightgarbageproblemisthatthecitywillloadhugespaceships9wastematerialsandsendthemtowardsthesunsoastopreventlandfilland10environmentproblems.
今天火箭是一种非常先进的机器;我们用它把宇航员们送入太空.advanced;which/that引导的定语从句
小明的妈妈买回来一只凤梨满屋都是香香的凤梨味道这表明
E﹣mailaswellastelephonesanimportantpartindailycommunication. A.isplaying B.haveplayed C.wasplaying D.play
thatImadeamistakeImadeanapologyhim. A.Realized;to B.Realize;for C.Havingrealized;to D.Realizing;for
Hearinghisfatherwasseriouslyill. A.heburstintotears B.hiseyeswerefilledwithtears C.hisfacelostitscolor D.tearscametohiseyes
如图所示是利用起重机打捞水中物体的示意图．起重机的吊臂前端由滑轮组组成动滑轮总重为300kg绳重和摩擦不计．现在用此起重机从水中把质量为2×103kg体积为0.8m3的物体G向上提当物体在水中均匀上升时滑轮组上钢丝绳拉力F的功率为3kW．则物体完浸没在水中时受到的浮力为N物体未露出水面前上升的速度为m/s物体离开水面后滑轮组的机械效率是．g＝10N/kgρ水＝1.0×103kg/m3
在中国文化里龙是慷慨的聪明的虽然他们看起来也许有点吓人.generous;scary
HelloListeners.WelcometoHentonHospitalRadio.BeforeourmusicprogramatfourI'mgoingtorepeatsomeofourhospitalrules. Thehospitalcansleep800patients.There're8bedsineachward病房.Thevisitinghoursareintheafternoonfrom230to330andintheeveningfrom700to800.Butrememberonlytwopeoplecanseeyouatthesametime.Sorryaboutthatbutyoucanseewhatwouldhappenifwedidn'thavetheserules. Theotherrulesareaboutourhours.Westartquiteearly﹣﹣﹣youmightnotbeusedtothat.Wewakeyouat6o'clockandbreakfastisat8o'clocklunchisatnoon. There'steaat330andsupperisat6o'clock. Youcanseethenon﹣smokingsign﹣﹣﹣wedon'tallowsmokinginthewards.I'msureyouunderstandwhy.HoweverifyoudoneedtosmoketherearesomesmokingroomswhereItisallowed. Youwillfindtheradioswitch开关onthewallnearyourbedwithyourownheadphonesifyouwanttolisten.It'sourownhospitalradiowishingyouaquickrecovery康复. 1Whodoyouthinkthelistenersmightbe? A.Patients. B.Visitors. C.Doctors D.Nurses 2Howmanywardsarethereinthishospital? A.8 B.80 C.100 D.800 3WhichisNotallowedinthehospital? A.Listeningtothehospitalradio. B.Visitingpatientsinthemorning. C.Smokinginsmoking﹣rooms. D.Gettingupearlyinthemorning. 4Whatprogramwillfollowthisradiotalk? A.Hospitalrules. B.Aweatherreport. C.Afreetalk. D.Amusicprogram.
ThingsPositivePeopleDon'tDoPositivepeopledon'thaveamagicalpowerthatyoudon'tpossess.Insteadoflettingstresscontrolthempositivepeopletakecontroloftheirlifebymanagingstressandtryingtoimproveeveryday.1Theydon'tforgetlittlethings.Isiteasytoforgetlittlethings?CertainlyButpositivepeopledon'tmakeahabitofit.Insteadtheyexpressgratitudeforeveryblessingnomatterhowbigorsmallitis.2Theydon'tseeproblemsasproblems.3Theybelievethateverytroublecomesasanopportunitythatisyettobediscovered.Theytakethechancetochallengethemselvesandimprovethemselves.4Positivepeopledon'tfallfor'loseweightfast'or'getrichquick'lies.Theyknowthatanythingworthhavingrequireshardwork.Theyarecomfortablewiththefactthatachievingsuccessmighttakeabitlongerthantheyexpect.Theydon'tholdontohate.Positivepeopleunderstandthathateonlycausespaininlifeoverandoveragainsotheyletgoofit.5Andtheywillmoveonwithwhattheyhavelearnedfromthepains.A.Theydon'tthinklifeisperfect.B.Theychoosetoacceptandforgive.C.Theydon'texpectsomethingfornothing.D.Problemsareseenaschallengesforpositivepeople.E.Checkoutthefollowingthingstheydon'tdoandreflectonyourself.F.Infactit'sthelittlethingsthatusuallydecidewhethersuccessfinallycomes.G.Positivepeopleexploretheworldwithenthusiasmandcuriosityaskingasmanyquestionsastheycan.
如图所示利用滑轮组将重500N的货箱以0.1m/s的速度匀速提起绳子自由端拉力F为200N不计摩擦和绳重g取10N/kg．求 1拉力的功率 2用该滑轮组将重800N的物体提高1m拉力做的功．
如图所示是“探究阻力对物体运动的影响”的实验装置图． 1小车必须从三个相同斜面的同一高度下滑这是为了 2小车在木板表面运动得最远这是因为 3由此可以推断假如小车在光滑水平面上不受阻力它将．
假定英语课上英语老师要求同桌之间相互修改作文.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2处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处添加一个漏字符号∧并在其下面写出该加的词; 删除把多余的词用删除号\删掉; 修改在错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. NorthwestChinaispartofthesandstormcentreinCentralAsia.Sandstormsbeginsindesertareas.InChinatheyhaveincreasedastheresultofdesertification.Thisisbecauseofclimatechangesorbecausepeoplecutdowntreeanddigupgrass. SandstormssometimesseriousaffectBeijing.Citizenswakeuptoorangeskyandstrongwindsinwhichbringthickdust.Tothewesternofthecityadesertliesonly250kilometresawaygetcloseryearbyyear.Topreventthemthegovernmenthasalreadyplantmorethan30billiontrees.
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