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实验室制取气体，发生装置的选择需要考虑 和 ，收集装置的选择需要考虑 和
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某研究性学习小组利用下列装置进行相关气体制取的探究请你分析并填空1写出图中仪器ab的名称a_____
通常状况下氨气是一种无色有刺激性气味的气体密度比空气小极易溶于水形成的溶液是氨水实验室常用加热氯化铵
下图是实验室制取气体的发生装置和气体收集装置请你回答下列问题1仪器a的名称是2实验室用过氧化氢溶液制
实验室制取气体所需的装置如下图所示请回答下列问题1实验室制取二氧化碳所选用的发生装置为收集装置为均填
实验室制取气体的实验装置如下图请回答问题1选择D.作为实验室制取气体的发生装置的依据是请你写出一个适
某研究性学习小组欲利用下列装置进行相关气体制取的探究请你分析并填空1写出图中仪器ab的名称ab2实验
下面是几种实验室制取气体的发生装置和收集装置1实验室用高锰酸钾制取氧气时应选用填字母标号做气体发生装
下图是实验室用于气体制备的装置请根据图示回答问题⑴实验室用氯酸钾制取氧气应选择的发生装置是填序号下同
实验室里制取气体的装置包括___________和_________两部分确定气体的发生装置应考虑的
下图是实验室制取气体的常用装置1仪器①的名称是______2选择恰当的装置可用来加热高锰酸钾制取氧气
实验室常用下列装置制取气体我能根据所学知识回答下列问题1用A.装置制取某种气体的一个化学方程式为2实
实验室制取气体所需的装置如下图所示请回答下列问题1实验室制取二氧化碳所选用的发生装置为收集装置为均填
实验室常用下列装置制取气体我能根据所学知识回答下列问题1用A.装置制取某种气体的一个化学方程式为2实
根据下列装置填空1写出编号①②仪器的名称①②.2实验室制取二氧化碳的发生装置应选用填序号下同收集装置
下图是实验室常用的制取气体的发生装置和收集装置用序号填空1实验室制取二氧化碳的发生装置是收集装置为实
在实验室制取气体选择发生装置时需要考虑的因素是
所制气体的密度
所制气体在水中的溶解性
反应物的种类
反应物的状态和反应的条件
如图是实验室制取气体的发生装置和气体收集装置请你回答下列问题1仪器a的名称是________2实验室
下图是实验室制取气体的发生装置和气体收集装置回答下列问题1用装置B.和E.制取氧气其反应的化学方程式
如图是实验室常见的制取气体的装置⑴写出仪器名称②_④⑵实验室采用高锰酸钾制取氧气时应选择的发生装置是
下图是实验室制取气体的发生装置和气体收集装置回答下列问题1用装置B.和E.制取氧气其反应的化学方程式
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﹣Whydidhemakenotobeunderstoodorliked? ﹣Hedidn'tcarewhatothersthinkofhim. A.risk B.balance C.suggestion D.effort
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Inthefallof1985IwasholdingadreamtoHowardUniversitysothatonedayIcouldsitonaSupremeCourtbenchsomewhereandmakesomejustsentence.Twenty﹣oneyearslaterIamstilladreamerandbewithquiteadifferentexperiencetogothrough. MygrandmadevelopedcancersoImadethechoicetoleavethecollegetocareforher.Itmeantthatschoolandmypersonaldreamwouldhavetowait. ThenIgotmarriedwithanotherdream.In1999weadopted收养ourfirstson.Tolayeyesonhimwasfantastic.Ayearlatercameoursecondadoptedboy.ThenfollowedsonNo.3.In2003Igavebirthtoanotherboy. YoucanimaginehowbusyIbecameraisingfourboysundertheageof8.Ourhomewasacompletezoo﹣ajoyouszoo.AsaresultIneverdidmakeitbacktocollegefull﹣time.ButInevergaveuponthedreameither.Ihadonlyonechoice:tofindaway.Thatmeanttalkingasfewasoneclasseachterm. ThehardestpartwasfeelingguiltyaboutthetimeIspentawayfromtheboys.Theyoftenwantedmetostayhomewiththem.TherecertainlyweretimesIwantedtoquitbutIknewIshouldsetanexampleforthemtofollowthroughtherestoftheirlives. In2007IgraduatedfromtheUniversityofNorthCarolina.Ittookmeover21yearstogetmycollegedegreeandfinallybecomeajudge! Iamnotspecialjustsingle﹣minded.Italwaysstruckmethatwhenyou'relookingatabigchallengefromtheoutsideitlookshugebutwhenyou'reinthemidstofititjustseemsnormal.Everythingyouwantwon'tarriveinyourlifeononeday.It'saprocess.Remember:littlestepsadduptobigdreams. 1.WhentheauthorwenttoHowardUniversityherdreamwastobe A.awriter B.ateacher C.ajudge D.adoctor 2.Whydidtheauthorquitschoolinhersecondyearofcollege? A.Shewantedtostudybyherself. B.Shefellinloveandgotmarried. C.Shesufferedfromaseriousillness. D.Shedecidedtolookafterhergrandma. 3.Welearnfromparagraphs4and5that_. A.theauthorwasbusyyethappywithherfamilylife B.theauthorjustfeltguiltyforhersons C.theauthorwantedtoremainafull﹣timehousewife D.theauthorwastooconfusedtomakeacorrectchoice 4.Wecaninferfromthepassagethattheauthoris. A.caringanddetermined B.honestandresponsible C.strongandworried D.simpleandsingle﹣minded 5.Whatdoestheauthormostlywanttotellusinthelastparagraph? A.Failureisthemotherofsuccess. B.Littlebylittleonegoesfar. C.Everycoinhastwosides. D.Wellbegunhalfdone.
ShaoYifu邵逸夫widelyknownasSirRunRunShawisoneofthemostimportantpeopleinthemovieindustry.SirRunRunShawpassedawayonJanuary7th2014athishomeinHongKong.Hewasthemanwhobuiltamediaempireandsupportedmanyeducationalandscientificprogramsthatwebenefit受益fromtoday. ThelogoofShawBrothersshortenedasSBappearedonmanyofthebigmoviesofHongKongduringthe1960sand1970s.ManyexcellentactorsandactressesincludingChowYun﹣fatAndyLauandStephenChowroseupfromRunRunShaw'sTVempireTelevisionBroadcastsLimitedorTVB.TheChineseprogramsproducedbyTVBareseenby300millionfamiliesaroundtheworld. RunRunShawwasbornthesixthchildofseventoarichbusinessfamilyinNingboaneasterncityclosetoShanghai.HethereforereceivedthenicknameUncleSix.In1925inShanghaiattheageof19ShawinterruptedhisstudyduringasummervacationandwenttoSingaporetomarketfilmstoSoutheastAsia'sChinesecommunitieswithhisthreebrothers. ExactlyhowthenameRunRuncameintobeingremainedamystery.ItwassaidthathegothisnamefromthepronunciationofhisnameinthelocallanguageofNingbo.ActorChowYun﹣fatoncejokedabouthowShawgotthenamebecausebackinSingaporehewasalwaysrunningbetweendifferentChinesecommunitiescarryinghisfilmrollsandtryingtosellthem.Chow'sexplanationmaybeajokebutitsomehowreflectedthebigeffortShawmadetodeveloptheSingaporefilmmarket. 根据短文内容选择最佳答案. 1.WhatcanyoufindinParagraph1? A.Shaowasascientist B.Shaohasmadegreatcontributionstocharity慈善. C.Shaowasaneducator. D.ShaoYifuwasbornin1907. 2.WhatdoestheunderlinedwordinterruptmeaninChineseinthepassage? A.中断 B.完成 C.继续 D.转移 3.What'sthemainideaofthelastparagraph? A.Soldfilmsandchoseactors. B.RunRunShawandChowYun﹣fat. C.HowShawtoldajoke. D.HowthenameRunRuncameintobeing. 4.WhichofthefollowingisNOTTRUEaccordingtothepassage? A.ShaoYifuwasborninShanghai. B.Shaodiedattheageofmorethan100years. C.UncleSixreferstoShaoYifu. D.Therewere7brothersorsistersinShao'sfamily. 5.What'sthebesttitleofthepassage? A.Mysterystory B.ShaoandActors C.AMediaEmpire D.SomethingaboutShaoYifu
Ithasbeenforty﹣threeyears.Ihavenearlyforgottenthenameoftheoldladywhowasmycustomeronthenewspaper.YetIstillrememberhersmileandalessonshetaughtmein1・OnawinterafternoonmyfriendsandIwerethrowingstonesontotheroofoftheoldlady'shouse.Wejustwantedtoseehowthestonesrolledofftheroof'sedge.Ifounda2smoothrockandthrewitoutbutit3straightforasmallwindowoftheoldlady'shouse.Atthesoundofbrokenglassweknewwewereintrouble.Weranhomefast.Iwasso4aboutgettingcaughtthatfirstnight.5afewdayslaterIstartedtofeelguiltyforherbadluck.She6greetedmewithasmilewhenIgaveherthenewspaperbutIwasnolongerabletoactcomfortablyinherpresence.I7mymindthatIwouldsavemynewspaperdeliverymoneyandinthreeweeksIhadsevendollars.Iputthemoneyinanenvelopewitha8explainingthatIwassorryforbreakingherwindowandhopethatthesevendollarswould9thecostforrepairingit.Iwaiteduntilitwas10andputtheletterIdidn't11intoheryard.TomyreliefIcouldhavethefreedomofonceagainlookingstraightintotheoldlady'skindeyes.ThenextdayI12theoldladyhernewspaper.AndIfinallyfeltfreeto13hersmile.Shethankedmeformypaperandgavemeabagofcookiesshehadmadeherself.14eatingcookiesIfeltanenvelopeandpulleditoutofthebag.AfteropeningitIwasshocked.Insidewerethesevendollarsandashortnote15I'mproudofyou. 1.A.happiness B.carelessness C.forgiveness D.kindness 2.A.simply B.mostly C.really D.exactly 3.A.followed B.came C.lay D.headed 4.A.frightened B.disappointed C.embarrassed D.excited 5.A.So B.After C.However D.Besides 6.A.yet B.still C.even D.already 7.A.gotup B.madeup C.setup D.putup 8.A.paper B.note C.notice D.message 9.A.cover B.offer C.afford D.pay 10.A.rainy B.fine C.cloudy D.dark 11.A.sign B.read C.expect D.want 12.A.left B.handed C.lost D.bought 13.A.calm B.return C.get D.notice 14.A.Unless B.Until C.Because D.While 15.A.saying B.writing C.telling D.explaining
ListencarefullytowhatIsay.thetimetravelersaid.Ishalltellyousomethingthatyouwillnotagree. Whywillwenotagree?Iasked. BecausethescienceandmathematicsyouknowarenotcorrecthesaidYoubelievethereareonlythreedimensions三维空间﹣﹣﹣lengthbreadth宽andthickness. Thereisnothingtoagreewiththattheyoungestmemberofourlittlegroupsaid. Exactly!thetimetraveleranswered.Butthereisalsoafourthdimension﹣﹣﹣time. WeallknowabouttimeanothermemberofthegroupsaidTimepasses. Idonotagreethetimetravelersaid.Lengthbreadthandthicknessdonotpass.Theystayinthesameplaceinspace.Wemoveaboutthem.Icanprovethattimeisthesame.Itdoesnotpass.Wemoveintimethesamewaythatwemoveinlengthbreadthandthickness. Noneofusbelievedthetimetravelerandwearguedwithhimformanyhours. Ifwecouldtravelbackintimethescientistsaidwecoulddothingstochangethefuture. Ifwecouldtravelforwardintimethedoctor博士saidWecoulddothingsthatchangeourpresent. Thetimetravelersmiled.ItisclearhesaidthatthereisonlyonewayIcanshowyouthatIamright.Wemustdoanexperiment.Pleasewaithere. Helefttheroomandsoonreturnedcarryingwhatlookedlikeaclock. Thisisamodelofatimemachine.Ittookmetwoyearstomakeit.ThetimetravelersaidIwantallofyoutounderstandthatwhenIstartthemachineitwillimmediately立即travelintimeanddisappearfrompresent. Heturnedtotheyoungestofus.Givemeyourhand.hesaid. Theyoungmanputouthishand.Thetimetravelertookitandplaceditonthemachine.Immediatelytherewasasuddenwindandthelittlemachinedisappeared. Iwascertainthiswasnotatrickbutthedoctorwasnotsosure. Areyouaskingustobelievehesaidthatthemachineisnowinthedifferenttime? Certainly!Inmylaboratoryafull﹣sizemachineisalmostcomplete.AssoonasitiscompleteIshallsendmyselfonajourneythroughtime.Wouldyouliketoseemymachine? Areyouseriousaboutthis?thedoctorasked. IhaveneverbeenmoreseriousaboutanythingthetimetravelersaidCome. Wefollowedhimtohislaboratory.Therewesawtheactualmachinenotquitecompletebutlargeenoughforamantositin. 1.Howmanydimensionsdidthetimetravelersaythereare? A.Two B.Three C.Four D.Five 2.Whichistherightorderofwhathappenedinthestory? a.Themodeltimemachinedisappearedwithawind. b.Thetimetravelercamebacktotheroomwithamodeltimemachine. c.Themembersofthegrouparguedwiththetimetravelerformanyhours. d.Thetimetravelershowedthemafull﹣sizetimemachinewhichwasnotquitecomplete. e.Theyoungestman'shandwasplacedonthemodeltimemachine. A.ecadb B.bcead C.cebad D.cbead 3.Whatcanweinfer推断fromthepassageaboutthetimetraveler? A.Hebelievedthattheycouldmoveintime. B.Hewasplayingatrickonagroupofpeople. C.Hesenttheyoungmantothefutureinthemodeltimemachine. D.Hewouldpossiblysendhimselfonajourneythroughtime. 4.Whatkindofstorydoyouthinkthepassageis? A.Adetectivestory. B.Asciencefiction. C.Aromanticfiction. D.Ahorrorstory.
MostparentsIsupposehavehadtheexperienceofreadingabedtimestorytotheirchildren.Andtheymusthaverealizedhowdifficultitistowritea1children'sbook.Eithertheauthorhasaimedtoo2sothatchildrencan'tfollowwhatisinhisstory3thestoryseemstobetalkingtothereaders. Thebestchildren'sbooksare4toodifficultnorverysimpleandsatisfythechildrenwhohearsthestoryandtheadultwho5it.Unluckilythereareinfactfewbookslikethis6theproblemoffindingtherightbedtimestoryisnoteasytosolve.Thismaybewhymanyofthebooksregardedas7ofchildren'sliteraturewereinfactwrittenforgrow﹣ups.AliceinWonderlandisthemostobvious明显ofthis. Childrenleftforthemselvesoften8theworstpossibleinterestinliterature.Justleaveachildinabookshoporalibraryandhewillmorewillinglychoosethebookswritteninanunimaginativewayorhavealookatthemostchildren'scomicsfullofthestoriesandjokeswhicharetherejections排斥ofteachersandrighting﹣thinkingparents. Perhapsweparentsshouldstop9tobrainwash洗脑childrenintoacceptingourtasteinliterature.10childrenandadultsaresodifferentthatweparentsshouldnotexpectthattheywillenjoythesamebooks.SoIsupposewe'lljusthavetocompromise妥协overthebedtimestory. 1.A.short B.long C.bad D.good 2.A.high B.short C.easy D.difficult 3.A.and B.but C.or D.so 4.A.not B.neither C.either D.quite 5.A.hears B.buys C.understands D.reads 6.A.but B.however C.so D.because 7.A.articles B.favourite C.arts D.works 8.A.put B.show C.find D.add 9.A.going B.liking C.trying D.preferring 10.A.Afterall B.Aboveall C.Firstofall D.Asaresult
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20分假如你的同学是李明想竞选班上的班长.请你就下列内容以好朋友的身份介绍一下他.内容要点如下: 1.性格外向友善待人; 2.各科成绩好受到老师们的喜爱; 3.积极参加各种活动获得许多奖项; 4.上课认真听讲回家按时完成作业; 5.孝敬长辈在家经常帮助父母做家务. 6.请你再补充1﹣2条自己的观点. 注意:1.自我介绍的开头已给出不计入总词数. 2.词数:60﹣80; 3.内容要得体不要逐句翻译. 参考词汇:takeanactivepartin积极参加respectv.孝敬prizen.奖项Helloeveryone!Hownicetoseeyouhere!
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OneSundayIwalkedtothesupermarket.AsusualthereIpickedupallthethingsontheshoppinglistmymother1me.AsIturnedtogooutIsawabeautifuldressinthewindow.IturnedawayfeelingthatIcouldneverownsuchadress. OutsideIcouldn'ttakemymindoffthatdress.IworkedsohardtohelpmyfamilybutIgot2inreturnjustmorechores家务活todo.IwassoangrythatIfailedtorealizetheappleswerefallingoutofthebagontotheroad.SuddenlyIsawapairofhandshandingmetwooftheapples.Ilookedupandsawahomelessoldman.Hisclotheswereold3hiseyesweresoftandkind. ThanksIsaid.Nootherwords4ashecontinuedtohelpme.Soonalltheappleswerebackinthebag.IsaidThankyouonemoretimeandwasreadytoleavebecauseIhadmanyotherthings5.SuddenlyhesaidHaveaniceday.Andthenhegavemethebiggest6Ihadeverseen.Rightthenhelookedyearsyounger﹣﹣﹣andIfeltafool. SeeinghimdisappearintothecrowdIcouldn'tstopfeeling7formyself.Thehomelessoldmantaughtmesomuch.Lifewas8easyforhim.Hehadremindedme9hisbigsmilethatmylifewasgoodenoughandtherewere10thingsthannothavingadress. MymotherwillgivemeanotherlistnextSunday.Iwillmakethesame11tothesupermarketandprobablyseesomethingIwantbutcannothavetoo.ButbeforeIstarttofeel12Iwillrememberthekindstrangerandhisbigsmile. 1.A.bought B.treated C.gave D.lend 2.A.anything B.something C.everything D.nothing 3.A.or B.but C.unless D.because 4.A.speak B.spoke C.arespoken D.werespoken 5.A.finish B.tofinish C.finishing D.tofinishing 6.A.smile B.gift C.apple D.bag 7.A.safe B.proud C.sorry D.nervous 8.A.just B.even C.only D.never 9.A.with B.in C.on D.for 10.A.worse B.better C.bigger D.smaller 11.A.decision B.journey C.effort D.mistake 12.A.crazy B.funny C.unhappy D.surprised
根据句意用括号内所给词的适当形式填空. Someforeignerssayit'sdifficultforthemtolearnthepronounceofChinese.
takeout/everyday/achieve/changes/sweet/bringout 1.Wevaluethetimewespendwithourfamilyandfriendsinourlives. 2.Mybestfriendhelpstothebestinme. 3.Thespiritoftheseclimbersshowsusthatweshouldnevergiveuptryingtoourdreams. 4.Everythingthatyoulearnbecomesapartofyouandyou. 5.Amywantstokeepheroldthingsbecausetheybringbackmemories.
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请根据所给思维导图和写作要求联系生活实际以MyFamilyLife为题用英语写一篇不少于80个词的短文谈谈你的家庭生活. 写作要求: 1.短文必须包含思维导图中至少三个方面的内容; 2.语句通顺意思连贯语法正确书写规范; 3.文中不得出现真实的人名校名或地名. MyFamilyLife
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anextractfromProbuditi! CalvinwaitedoutsideTrudy'sbedroom.Thenithappened﹣ascreamaveryloudscream.Calvinrantohisroomanddivedintobed. HeheardMamacomingdownthehall. Didyoudothis?hismotherasked.Calvinlookedoutfromunderthecovers.Hismotherstoodoverhimholdingarubberspider蜘蛛. Dowhat?heasked. YouputthatthinginmybedTrudytoldhimsteppingoutfrombehindMama. Don'tthinkthatjustbecauseit'syourbirthdayyoucangetawaywithsomethinglikethisMamascolded责骂. Youdowantyourpresentdon'tyou?ThatwipedthesmileoffCalvin'sface. CourseIdohesaid. Thenyouapologize道歉. Calvindroppedhishead.SorryTrudyhemuttered嘟囔. HereMamasaid.Happybirthday.AtthebreakfasttableshehandedCalvinanenvelope.InsidewereticketstothematineeshowofLomaxtheMagnificenttheworld﹣famousmagicianandhypnotist.You'vegottwoticketsthereMamasaidandIknowsomeonewho'dreallylovetogoalong.ShesmiledatTrudy. Youdon'tmeanheredoyou?Calvinaskedeyeinghislittlesister. Wellthatwouldbereallynice.Butthoseticketsareyours.Ifyouwanttoasksomebody﹣Calvindidn'twaitforhismothertofinish.HerushedoutofthehousetotellRodneyhisfriendnextdoorthatthetwoofthemweregoingtoseeLomaxtheMagnificent. 1.Whoscreamedatthebeginning? A.Calvin. B.Calvin'ssister. C.Calvin'sfriend. D.Calvin'smother. 2.Calvin'smotherreallywantedCalvinto. A.askhisfriendtotheshow B.dowhatshethoughtwasright C.watchtheshowwithouthissister D.findoutwhathisfriendthought 3.Whatisthebesttitleforthispassage? A.Trudy'sSpider B.Mother'sTickets C.Calvin'sBirthday D.Rodney'sPresent
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RecentlyaverysimplesentenceAmazingmyhomelandhasbecomewidelyknowninChina.Chinatheancientand1measterncountryisattractingmoreandmoreattentionaroundtheworld. LanlananAustraliangirlhaslivedinChinaformorethanthreeyears.Nowsheisstudyingina2uinNanjing.Greatchangesmakethegirlamazed. Ithinkitismuch3etofindjobsinChina.Therearelotsofjobopportunities.ItissimpletofindajobinChina4uyouaretoolazy. InNanjingyouwillfindnew5barebeingbuiltnearby.Thegreatchangesaremuchmorethanyoucan6e.Theachievementissosurprising. Onebeltoneroad一带一路ishelpingChinadevelop7tandfriendshipwithothercountries.Manycountrieswanttodobusiness8wChina.Anditsrichcultureis9itheworld. Chinais10pmoreandmoreimportantroleintheworld.Chinesegovernmentalwayskeeps11pandtriestorealizeit.Moreandmoreforeigners12tChinaandtheyarewillingtoliveandworkhere. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
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