首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
实验室有一瓶标签破损的硫酸．为测定该瓶硫酸溶液的溶质质量分数，小强同学在烧杯中加入50g该硫酸，然后向烧杯中滴加溶质质量分数为10%的氢氧化钠溶液，边滴加边搅拌，随着氢氧化钠溶液的滴入，溶液的pH变...
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
实验室有一瓶标签残缺的硫酸铜溶液为了测定此溶液的溶质质量分数某同学取出50g该溶液.向其中逐滴加入溶
实验室欲测定一瓶标签破损的稀H2SO4的溶质质量分数.现取10g稀硫酸样品将5%的NaOH溶液逐滴加
实验室欲测定一瓶标签破损的稀H2SO4的溶质质量分数现取10g稀硫酸样品将5%的NaOH溶液逐滴加入
有一瓶标签破损的稀硫酸为测定其溶质质量分数取出20g溶液加入足量的锌粒充分反应后产生的氢气为0.02
某小组欲用4.9%的稀H.2SO4测一瓶标签破损的NaOH溶液的质量分数.1从一瓶标签模糊的NaOH
实验室欲测定一瓶标签破损的稀H2SO4的溶质质量分数现取10g稀硫酸样品将5%的NaOH溶液逐滴加入
实验室欲测定一瓶标签破损的稀H2SO4的溶质质量分数现取10g稀硫酸样品将5%的NaOH溶液逐滴加入
实验室欲测定一瓶标签破损的稀硫酸中溶质的质量分数.现取10g稀硫酸样品将5%的NaOH溶液逐滴加入到
实验室欲测定一瓶标签破损的稀H2SO4的溶质质量分数.现取10g稀硫酸样品将5%的NaOH溶液逐滴加
实验室欲测定一瓶标签破损的稀硫酸溶液的浓度现取10g稀硫酸样品将5%的NaOH溶液逐滴加到样品中边加
实验室欲测定一瓶标签破损的稀H2SO4的溶质质量分数现取10g稀硫酸样品将5%的NaOH溶液逐滴加入
实验室有一瓶质量分数为19.6%的稀硫酸请回答1配置200g这种溶液需g溶质质量分数为98%的硫酸2
实验室欲测定一瓶标签破损的稀硫酸的溶质质量分数现取10g稀硫酸样品将5%的NaOH溶液逐滴加入到样品
为测定实验室中一瓶标签破损的稀硫酸中溶质的质量分数取该稀硫酸20g与足量锌粒完全反应收集到0.08g
有一瓶标签破损的稀硫酸为测定其溶质质量分数取出20g溶液加入足量的锌粒充分反应后产生的氢气0.02g
小明在实验室看到一瓶标签破损的硫酸溶液为了测定其中硫酸的质量分数他进行了如下实验取5g氢氧化钠固体
下图为化学实验室中浓硫酸试剂瓶标签的部分内容请根据标签计算1该瓶浓硫酸中含有的水和硫酸的质量分别为多
实验室有一瓶标签已破损的过氧化氢溶液同学们为了测定瓶内溶液的溶质质量分数他们取该溶液34g于烧杯中加
实验室欲测定一瓶标签破损的稀H2SO4的溶质的质量分数.现取10g稀硫酸样品将5%的NaOH溶液逐滴
实验室有一瓶未知浓度的氯化钡溶液为测定其浓度做了如下实验取该溶液20.OmL密度约为l.Og／mL放
热门试题
更多
代数式在实数范围内有意义则x的取值范围是．
1分Abouttwothousandofpeoplewereinjuredintheearthquake.
8分Thesecrettohappinessiskeepingbusyresearchhasfound.Keepingthemindoccupiedwithtasks﹣nomatterhowmeaningless﹣keepsoffnegativeemotionsthestudyfound. HoweverthebadnewsisthathumansareseeminglyborntobelazyinordertosaveenergyaccordingtoProfessorChristoperHseeabehavioralscientistatChicagoUniversity. Inastudy98studentswereaskedtocompletetwosurveys.Aftertheyhadcompletedthefirsttheyweremadetowait15minutestoreceivethenextone.Theyweregivenachoiceofeitherhandinginthefirstsurveynearbyoramoredistantlocationtheyhadtowalkto.Whicheveroptiontheychosetheyreceivedachocolatebar.Itturnedoutthatabouttwo﹣thirds68studentschosethelazyoption.Thosewhohadtakenthewalkreportedfeelinghappierthanthosewhohadstayedput. ProfessorHseeconcludedthatkeepingbusyhelpedkeeppeoplehappy.HesaidthefindingsreportedinthejournalPsychologicalSciencehadpolicyimplications暗示. Governmentsmayincreasethehappinessofidle无所事事的citizensbyhavingthembuildbridgesthatareactuallyuselessheproposed. AtthepersonallevelheadvisedGetupanddosomething.Anything.Eveniftherereallyisnopointtowhatyouaredoingyouwillfeelbetterforit.HeaddedIncidentallythinkingdeeplyorengaginginself﹣reflectioncountsaskeepingbusytoo. Youdonotneedtoberunningaround.Youjustneedtobeengagedeitherphysicallyormentally. 1Accordingtothepassagewhycankeepingbusymakepeoplehappy? A.Itcanhelppeoplekeepofflaziness. B.Itcanmakepeoplesleepbetter. C.Itcanhelpgetridofunpleasantfeelings. D.Itcangivepeopleasenseofachievement. 2WhichofthefollowingstatementsisTRUEaccordingtothepassage? A.Thefindingmaycontributetopolitics. B.TheofficialshavetakenPro.Hsee'sadvice. C.Inthestudyonethirdstudentshandedinthefirstsurveynearby. D.Governmentscanincreasecitizens'happinessbybuildingbridges. 3Whatcanweinferfromthepassage? A.Everybodyiscertainlyborntobelazy. B.Beingengagedcanaddtothepossibilityofbeingpleased. C.Prof.Hsee'sfindingwaspublishedinPsychologicalScience. D.Onlybykeepingworkingallthetimecanyougainhappiness. 4Whydoestheauthorwritethispassage? A.Toexplainwhathappinessis. B.Toadvisepeoplenottobeidle. C.Toadvisepeopletodowhatevertheyprefer. D.Toshowpeoplehowtotakeworkseriously.
在一个不透明的口袋中装有2个红球和若干个黑球这些球除颜色外其他都相同将袋中的球搅匀从中任意摸出一个球是黑球的概率是则袋中原有黑球
1计算4cos60°﹣﹣22+π﹣20190 2化简a+12﹣a+2a﹣2
10分文中共有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. OnedayItoldMrWangourmathteacherwasill.Iwasworriedabouthimandwenttoseehimaftertheschool.WhenIenterhisroomhestruggleduptowelcomeme.Ilethimlaydownagain.MrWanglookedpale.Iaskedabouthistrouble.Hesaidhewashavingabadcold.Thenhehadabadcough.Aftertakesomemedicinehewasgettingbetter.Heaskedmethatwelikedtheteacherwhotookplace.WhenheheardeverythingwasallrightIcouldseehewaspleasing.FinallyIaskedhimdon'ttoworryabouttheworkandhasagoodrest.
25分假如你叫李华刚刚升入高中.开学已经3个月了请你写信给老朋友琳琳.内容主要如下: 1.你认识了很多新同学和老师还结交了许多新朋友其中同桌怡欣是你最好的朋友 2.询问关于琳琳的一些情况朋友老师或学习状况等 3.希望大家都能努力为三年后的高考而奋斗. 注意: 1词数:100左右 2开头和结尾已经给出不计入总词数 3参考词汇:theNationalCollegeEntranceExaminations高考 DearLinlin Howtimeflies!IthasbeenaboutthreemonthssinceIenteredhighschool. Longliveourfriendship! Yourbestfriend LiHua
1分Iinsistedthatyoutookimmediateactiontosolvetheproblem.
如图矩形ABCD的顶点A和对称中心在反比例函数y＝k≠0x＞0上若矩形ABCD的面积为8则k的值为
8分Oneofthemainreasonswhyhumancloningturnsouttobeadebatableaffairisthatitwouldallowpeopletoclonethemselves.Justimaginethatyoucouldgetatwinbycloningyourself.Parentsmaygettemptedtoclonetheirdeadchild.SomemaythinkofcloningEinsteinorUsainBoltandgiverisetoaleagueofsuperhumansorsupersportsmen.Thoseagainsthumanitymaygiverisetoclonesofthefamousvillains恶棍inhistory.Theideaofhavingaclonesoundsprettyattractiveright?Ithasbeenfoundthattheproductionofclonetissueishelpfulinmakingagingpeoplelookyoung.AccordingtoDr.RichardSeedoneoftheleadingsupportersofhumancloningtechnologyonedayitshouldbepossibletoreverse逆转theagingprocess.Todayheartattackisthenumberonekillerinthedevelopedaswellasdevelopingcountries.Scientistsbelievethatbycloninghealthyheartcellsandinjectingthemintothedamagedheartareatheycantreatheartattacks.Byswitchingcellsonandoffthroughcloningithasbeenfoundthatcancercanbecured.Thephenomenonofcellsdifferentiating分化intospecifickindsoftissuewasbafflingthescientists.Cloningmayholdthekeyinmakingthemunderstanddifferentiationandcancer.Down'ssyndromeliverfailurekidneyfailurespinalcordinjuryandgeneticdiseasescanalsobecuredbycloning.Thesuccessstoriesofhumancloningandcreatingtissuecellshavehappenedindifferentpartsoftheworld.Peoplehavealsobeentreatedwiththetechnologyandhavestartedrealizingsomebenefitsofcloning.TheresponseandthefeedbacktheHumanCloningFoundationhasbeengettingaretestaments证据tothepopularitythisformofsciencegainsallovertheworld.Howevermanycountrieshavenotacceptedthis.Humancloninghasnotbeengiventhelegalstatusinmanycountries.Howeverthestemcellresearchhasbeenacceptedbysomegovernments.1Theauthor'sattitudetohumancloningis.A.supportiveB.objectiveC.concernedD.critical2WhatdoestheunderlinedwordbafflingmostprobablymeaninParagraph4?A.Confusing.B.Pleasing.C.Exciting.D.Threatening.3Itcanbeconcludedfromthelastparagraphthat.A.cloninghasbecomeasuccessfultechnologyB.cloninghasn'tbeenacceptedbyhumanbeingsC.notallcountrieshaveacceptedhumancloningD.thestemcellresearchhassucceededentirely4Whatdoesthepassagemainlytalkabout?A.BenefitsofHumanCloningB.DevelopmentofHumanCloningC.MeaningofHumanCloningD.FutureofHumanCloning
8分Areyouatleast17yearsold?Doyouweighmorethan110pounds?Doyouconsideryourselffairlyhealthy? Ifyouansweredyestoallofthesequestionsyoushouldbeadonating捐赠bloodeverytwomonths.InmysurveyofmyschoolmatesIfoundthatonly50percentofthemhaveeverdonatedbloodandthatonly1outof13ofthemdonateregularly.Thelack缺少ofblooddonorisaseriousproblemthatrequiresimmediateaction. AccordingtotheAmericanRedCrossWebpagesintheUnitedStatesalonesomeonereceivesabloodtransfusion输血onceeverythreeseconds.Peoplewhobenefitfromdonationsincludecancerpatientsaswellasbabies.Theneedforbloodnevertakesavacationandneithershoulddonors. LetmetellyouaboutBrookeathree﹣year﹣oldgirlwithcancer.Brookehasspentabouthalfofherlifeinthehospitalreceivingtreatments.Hertreatmentwillrequireabout500unitsofbloodintotalofwhichonly250unitshavebeenreplaced.Shestillneedstheotherhalfofthetotalamounttocontinuehertreatment.Ifshedoesn'treceivethisbloodshewillnotlivetostartkindergarten. ExampleslikesBrooke'sarebecomingalltoocommonthesedayswithonly1in20Americansdonatingbloodandthisnumberkeepsdroppingeachyear.Thesefactsareextremelyworryingconsideringthatnearlyhalfofusherewillneedbloodsometimeinourlives. Youcannowseetheseriousnessoftheproblemwiththelackofblooddonations.Fortunatelyitisaproblemthatcanbeeasilysolved.Eachandeveryoneofyoucanbepartofthesolution.AllyouhavetodoisgotothenearestRedCrossanddonateyourblood. 1HowdoestheauthorexplaintheproblemmentionedinParagraph2? A.Byansweringquestions. B.Bymakingcomparisons. C.Bypresentingresearchfindings D.Bydescribinghisownexperiences 2WhatcanwelearnfromtheAmericanRedCrossWebpages? A.Thesufferingofpatients. B.Thestrongneedforblood. C.TheeffortsoftheRedCross. D.Thebenefitsoftakingvacations. 3Thethree﹣year﹣oldgirlBrooke. A.doesn'tgetfairtreatmentinthehospital B.willneedanother250unitsofblood. C.staysalivebyreceivingblooddaily D.can'twaittostartkindergarten 4Whatisthepurposeofthetext? A.Topersuadepeopletodonateblood. B.Topresentsomenewmedicalresults. C.Tocallonpeopletosavealittlegirl. D.Toexplaintherisksofblooddonation.
北京时间6月5日21时07分中国成功将风云二号H气象卫星送入预定的高度36000km的地球同步轨道将36000km用科学记数法表示为．
6分Itlookslike2017isshapinguptobearecord﹣breakingyearinmoviehistory.Hereisalistofsomeoftheyear'sbiggestblockbusterssofar. Kong:SkullIsland Areboot重启ofKingKongwouldnormallygetlaughedatinthisdayandagebutitlookslikethismodernversionofthestorywillbeworthwatching.WithUSactressBrieLarsonandUKactorTomHiddlestoninthemixthisfilmissettobethisyear'sbiggestmonstertale. ReleaseDate:3/10/17 Beautyandthebeast DirectorBillCondonisbringingbackapartofourchildhoodinliveactioncompletewiththesongsweallrememberandloveWithBritishstarsEmmaWatsonandDanStevensleadingthecasttheclassicWaltDisneystoryalreadysoundslikeit'llbeadelightforbothchildrenandadults. ReleaseDate:3/17/17 TheFateoftheFurious TherewasdoubtthatwedevengetaFast8especiallyafterthefittingendingUSactorPaulwalker'scharacterwasgivenattheendofFurious7.Fansthoughtthey'dneverseeDomandtherestofthecrewbackinactionbutthankfullyUSstarVinDieselhimselfconfirmedthatTheFateoftheFuriousisfuelingupforanothergo.TheactorscharacterDomturnstothedarksidefundedbynewenemyCipherplayedbySouthAfricanactressCharlizeTheron.CantherestofDomsfamilyjointogethertobringtheiroldleaderdown?FindoutinApril. ReleaseDate:4/14/17 Spider﹣Man:Homecoming SpiderManisheadinghometoMarvelStudiosforthefirsttime.ThemoviewillshowusPeterparker'shighschooldaysandwillcontinuethethreadswesawformedduringhisinitialappearanceinCaptainAmerica:CivilWar.WeknowthatMichaelKeatonisplayingTheVultureinthisstoryandthatbothHappyHoganandTonyStarkplayedbyUSactorsJonFavreauandRobertDowneyJrarealongfortheride.Butit'sTomHolland'sshowasSpider﹣Mansolet'sseewhathehasinstore. ReleaseDate:7/7/17 1Whichofthefollowingmoviescan'tyouseeonMayDay? A.Kong:SkullIsland. B.Beautyandthebeast. C.TheFateoftheFurious. D.spider﹣man:Homecom. 2WhatcanweknowaboutBeautyandtheBeast? A.Itisfuelingupforanothergo. B.ItisproducedbyMarvelStudios. C.It'llshowusPeterparker'sschooldays. D.It'llbeenjoyableforbothchildrenandadults. 3DomplayedbyturnstothedarksideinTheFateoftheFurious. A.VinDiesel B.CharlizeTheron C.PaulWalker D.DanStevens
6的相反数为
30分OnJune172012mydaughtergavemeanewwalletasaFather'sDaypresent.Itwasaperfectgiftconsideringthatmypurseusedfornearlyadecadewasmuch1.Itooktheopportunityaswellto2somecardsnotesorsmallpiecesofpaperinitthatwerenolongerneeded.AsI3outtheoldwalletIwasamazedathowmuchit4.CarefullyIwentthroughits5piecebypieceand6themtotheirnewhome.AsIwaslookingatthemI7theorgandonorcard器官捐赠卡thatIhadsignednineyearsago.8ithadn'tyetbeencalledintouse.Stillitfeltgoodknowingthat9somethingshouldhappentomeIwouldbeabletogiveanotherpersonasecondchanceof10. AsI11thecardintomynewwalletIstartedthinkingaboutallthe12thingswecandonatetohelpotherstoday.Wecandonateourtimeourtalentsorourwisdom.Wecan13ourkindness.Wecan14ourlightintothedarkness.Wecandonateeverybitofloveandjoyinsideofus.Andthegreatestthingofallisthatwhenwedowe15thatwehaveevenmoretosharethanwhenwestart. Maybeyouwishto16anorgandonorcardsoyoucangivesomethingafteryou17.Butdon'tbeafraidtogivesomethingnowwhileyouarestill18.Beadonor.Makeyourentirelifean19toothers.Donateallyour20thingstomakethisworldabetterandbrighterplace. 1A.vivid B.small C.expensive D.worn 2A.keepback B.throwaway C.setaside D.putaside 3A.wiped B.sorted C.emptied D.handed 4A.held B.owned C.calculated D.sold 5A.papers B.contents C.pockets D.belongings 6A.attached B.moved C.fixed D.contributed 7A.broughtabout B.wentover C.cameacross D.gotthrough 8A.Unfortunately B.Unexpectedly C.Thankfully D.Regretfully 9A.if B.though C.unless D.since 10A.will B.risk C.length D.life 11A.dipped B.turned C.pushed D.placed 12A.spare B.other C.vital D.leftover 13A.give B.afford C.perform D.cast 14A.seek B.identify C.shine D.explore 15A.guarantee B.predict C.find D.stress 16A.purchase B.sign C.make D.write 17A.agree B.retire C.return D.die 18A.alive B.faithful C.elegant D.reliable 19A.award B.load C.target D.gift 20A.awesome B.wonderful C.dreadful D.plain
25分假设你叫李华是一名导游你将带领一个外国旅游团游览广东省.请你用英语写一篇发言稿简介广东.要点如下:1.地理位置;2.历史;3特产;4其它方面.注意:1.词数100左右;2可以适当增加细节.3开头语和结束语已为你写好. LadiesandGentlemen WelcometoGuangdongProvince.I'mLiHua.AndI'mmorethangladtobeyourguide. FinallyIsincerelyhopeeveryoneofyouwillenjoyyourselfhere.
某学习小组的五名同学在一次数学竞赛中的成绩分别是94分98分90分94分74分则下列结论正确的是
1分Therewasatimethatonehadgottohaveapassbooktolivethere.
30分Aladywantedabirthdaygiftfromherhusband.Formanyyearsshehadlikedabeautiful1andknowingherhusbandcould2itshetoldhimthatwasallshewanted.Onthemorningofthe3herhusbandtoldherhow4hewastohavesuchagoodwifeandhowmuchhelovedher.He5herabeautifulgiftpackage包装盒.Sheopeneditand6aBibleshèng jīng .7sheraisedhervoiceandsaidtoherhusbandWithallyourmoneyyougivemeaBible?Shewasso8thatshelefthim.Manyyearspassedandtheladywasvery9inbusiness.Sheownedtwolargecompanies.She10herhusbandwasveryoldandthoughtperhapssheshouldgoto11him.Butbeforeshecouldshe12alettertellingherthathehaddiedandgaveallofhispossessions财产toher.Sheneededtocomebackand13things.Whenshearrivedathishousesadness14herheart.Shesawthestillnew15justasshehadleftityearsbefore.With16sheopeneditandbegantoturnthepages.Aring17fromtheBibletotheflooranda18couldbeseen.Shepickeditupandfounditwastheringshewantedinthosedays.AndonthecardwasthedateofherbirthandthewordsLOVEUALWAYS.19yourgiftisnotpackagedthewayyouwantitit'sbecauseitisbetterpackagedthewayitis!Alwaysappreciatelittlethings.Theyusuallyleadyoutobiggerthings!Thebestandmostbeautifulthingsintheworldcannotbeseenoreventouchedfortheymustbefeltwiththe20.1A.watch B.coat C.box D.ring2A.afford B.sell C.like D.guess3A.meeting B.performance C.birthday D.holiday4A.proud B.sorry C.brave D.kind5A.lent B.asked C.gave D.moved6A.held B.missed C.carried D.found7A.Patiently B.Angrily C.Politely D.Lightly8A.quiet B.disappointed C.careless D.thankful9A.lonely B.failing C.successful D.poor10A.realized B.wondered C.hoped D.explained11A.visit B.understand C.help D.catch12A.passed B.wrote C.received D.sent13A.giveup B.payfor C.takecarefor D.lookfor14A.filled B.hurt C.left D.hit15A.table B.Bible C.letter D.car16A.laughter B.tears C.smiles D.interests17A.hid B.disappeared C.made D.dropped18A.flower B.card C.pen D.book19A.But B.And C.If D.So20A.heart B.eye C.hand D.face
如图在平面直角坐标系xOy中有一个由六个边长为1的正方形组成的图案其中点AB的坐标分别为3561．若过原点的直线l将这个图案分成面积相等的两部分则直线l的函数解析式为．
1分Iusedtoplayping﹣pongalotinmysparetimebutnowIaminterestinginfootball.
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.每处错误及其修改仅限一词. 2.只允许修改10处多者从第11处起不计分. Ibroughtupbymygrandmother.ShewasoneofthepeoplethatIlovedthemmost.Ididn'tknowwhattopayherbackexceptspendingmoretimeonher.Mygrand﹣motherhadapoormemory.OneSundaywetookawalkinthepark.Whenherneighborgreetedhershejuststaredatthemunabletorecognizewhotheyare.Itmademefeelquitesadly.Itwasliketakealittlechildforawalk.ButthatdayIenjoyedourwalkingasIheldherhand.Thatwasalastwalkweevertooktogetherintheparkbeforeshewastakentohospital.Lessthanayearlateshewasgone.
如图AB为⊙O的直径AC为⊙O的弦AD⊥CD且∠BAC＝∠CAD． 1求证CD是⊙O的切线 2若AD＝1CD＝2求⊙O的半径．
10分Manypeople'spictureofknitting编织includesgrandmotherssittinginrockingchairswithafatcatintheirlaps.Butteenagersaretakinguptheoldartsofknittingandturningthemintotrendyhobbies. 1anditwassometimeshardtofindniceyarn纱线intheUS.Notanymore. AnelAguayoisknownastheyarnladyatBeverlyFabricsinSanJoseCalifornia.ShesaysthatyarnsellsfasterthanIcanputitout.2.Evenkidsasyoungas11shopthere. CassieMarshall14beganknittingabouttwoyearsagoafterhergrandmothertaughtherhow.AtherschoolaclubsoldthingsthestudentsknittedtoraisemoneyforHurricaneKatrinavictims. 3.LaceyCopestartedcrocheting钩编whenshewaseightandbegantoknitat12. ItisrelaxingandgivesmesomethingtodowithmyhandsCopeexplained. Copehasnoticedthepopularityofherhobby.Itusedtodrivemecrazyseeingpeopletryingtoknit.NowIlikeitbutonlyiftheyaretryingforthemselvesnotbecauseitispopular. ShelearnedtoknitfromtheInternet.4. AtWaldorfSchoolsknittingispartofthecurriculum课程forboysandgirls.5. A.Herdepartmentisalwayscrowded B.Ifyouarelookingforahobbygiveknittingatry C.Tenyearsagofewyoungpeopleknewhowtoknit D.AndshefindspatternsandbuysyarnthrougheBay E.Afewkidsstartedknittingbeforeitbecamepopular F.Alotoftimeinclasspeopleknitinsteadofstudying G.Theschoolbelievesknittinghelpschildrenlearnhand﹣eyecoordination协调andimprovestheirstudyskills
下列图案中既是轴对称的图形又是中心对称的图形的是
已知圆锥的底面半径为2cm母线长是4cm则圆锥的侧面积是cm2结果保留π．
1分IwillgraspeverychancestudyEnglishinmylife.
6分Doyouwanttoimprovethewayyoustudy?Doyoufeelnervousbeforeatest?Manystudentssaythatalack缺少ofconcentration注意力istheirbiggestproblem.Itseriouslyaffects影响theirabilitytostudysodotheirtestresults.Ifsousethesetipstohelpyou.StudyTechniques•Youshouldalwaysstudyinthesameplace.Youshouldn'tsitinapositionthatyouuseforanotherpurpose.Forexamplewhenyousitonasofatostudyyourbrainwillthinkitistimetorelax.Don'twatchTVwhileyouarestudying.Expertswarnthatyourconcentrationmaybereducedby50percentifyoutrytostudyinthisway.Alwaystrytohaveawhitewallinfrontofyousothereisnothingtodistractmakelessconcentratedyou.Beforesittingdowntostudygathertogetheralltheequipmentyouneed.Apartfromyourtextbookspenspencilsandknivesmakesureyouhaveadictionary.Ifyourstudydeskortableisneededwhenyouarenotstudyingstoreallyourequipmentinaboxbesideit.•Youreyeswillbecometiredifyoutrytoreadatextwhichisonaflatsurface.Positionyourbookatanangleof30degrees.•Berealisticanddon'ttrytocompletetoomuchinonestudyperiod.Finishonethingbeforebeginninganother.Ifyouneedabreakgetupandwalkaroundforafewminutesbuttrynottotelephoneafriendorhavesomethingtoeat.Test﹣takingSkills•Allyourhardworkwillbefornothingifyouaretoonervoustotakeyourtest.Gettingenoughrestisveryimportant.Thismeansdonotstudyallnightbeforeyourtest!Itisabetterideatohavealong﹣termstudyplan.Trytomakeatimetableforyourstudywhichlastsforafewmonths.•Exerciseisagreatwaytoreducepressure压力.Doingsomeformofexerciseeverydaywillalsoimproveyourconcentration.Eathealthyfoodtoo.•Whenyouarriveintheexaminationroomfindyourseatandsitdown.Breatheslowlyanddeeply.Checkthetimeontheclockduringthetestbutnottoooften.Abovealltakenonoticeofeveryoneelseandgivethetestpaperyourundividedattention.1Whichofthefollowingstatementsistrueaccordingtothepassage?A.Youshouldstudyinadifferentplaceeverydaysoyoudon'tgetbored.B.YourconcentrationwillimproveifyoustudyandwatchTVatthesametime.C.Checkthetimeduringtheexamatacertaintime.D.Stayingupallnightandstudyingistiringbutyouwilllearnalotusingthismethod.2Whatdoestheunderlinedworditreferto?A.Yourstudydeskortable.B.Yourtextbook.C.Yourdictionary.D.Theequipmentyouneed.3Whatcanbeinferredfromthepassage?A.Youshouldn'tlookateveryoneelseduringthetest.B.Youwillhaveenoughenergytodealwithyourstudyandexamsbyeatinghealthydiet.C.You'llconcentratemoreifthereisnothingtodistractyou.D.Ifyoufeeltiredduringstudyyoucanwalkaroundforafewminutes.
15分JiaoziChineseDumplingisatraditionalChineseFood1isessential必不可少duringholidaysinNorthernChina.ChinesedumplingbecomesoneofthemostwidelylovedfoodsinChina.Therearemany2reason. Chinesedumplingisoneofthe3foodsinChineseNewYear.SincetheshapeofChinesedumplingissimilar4ancientChinesegoldorsilveringots铸锭theysymbolizewealthTraditionallythemembersofafamilygettogether5makedumplingsduringtheNewYear'sEve.Theymayhideacoininoneofthedumplings.Thepersonwho6findthecoinwilllikelytohaveagoodfortuneintheNewYear.ChinesedumplingisalsopopularinotherChineseholidaysorfestivalssoitispartoftheChinesecultureortradition. Chinesedumplingisadeliciousfood.Youcanmake7varietyofChinesedumplingsusingdifferentfillings8baseonyourtasteandhowvariousingredients烹调的原料aremixedtogetherbyyou. 9makedumplingsisreallyteamwork10usualallfamilymemberswilljointhework.SomepeoplestarttomakedumplingwhentheywerekidsinthefamilysomostChineseknowhowtomakedumplings.
8分Mistakesareapartoflife.Toerrishuman.Failureisalsoapartoflifenottheendoflife.Behappyfacinglife'schallenges.Whenyoumaketheefforttobehappyandtoimproveyourlifeyouareactuallyrewardedalongtheway. Lifeislikeagameandmaybeyoucanawardpointsforeveryeffortthathasbeenasuccessforyou.Tryit.Addtenpointsforeveryachievement.Andwhenyouhavereached50pointsjustyellHeyI'vewon!andgiveyourselfareward.IfyouhappentohavemissedyourpointsforwhateverreasontellyourselfWellItried!whichisbetterthannottryingatall.Don'tletitbesaidyoudidn'ttry. Whatisitthatyouwanttomakeyourselfhappy?Actuallyhappinessmeansdifferentthingstodifferentpeople.Forexampleanathletewillbehappywinninghisfirstrace.Foranewmotherhappinesswouldbeseeingherbaby'sfirststeps.Happinessforapoorpersonwouldmeanhavingamealjustfortoday.Sohappinessforyouisreallysomethingsimplethatyouwantforyourself. Itreallydoesn'thavetobebig.Asamatteroffactyoushouldbealwaysrealistic现实的.Makethebestoutofeverygivensituation.Ifyouexpectacertainresultfromasituationanditdoesnothappendon'tgetdespondent.Thisjustmeanstryinghardernexttime.Weallhaveinusthepowertosucceed.Don'tletgiveupbeapartofyourvocabulary. 1BysayingToerrishumantheauthormeansthat. A.humanbeingsshouldtrytoavoidmakingmistakes B.nooneisperfectandeveryonemakesmistakes C.mistakesandfailuresmakeupourlife D.humanbeingsmakemistakeseasily 2What'sthemainideaofParagraph2? A.Trytoreach50points. B.Neverstoptryinginyourlife. C.Awardyourselfforyoursuccess D.Don'tbeafraidofmissingyourpoints. 3TheauthorproveshisideainParagraph3through. A.examples B.numbers C.experiments D.stories 4Theunderlinedworddespondentinthelastparagraphmeans. A.frightened B.disappointed C.surprised D.excited
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
湘公网安备 43130202000226号