首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
以下实验基本操作不正确的是（ ）
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
根据实验操作规范要求下列实验操作不正确的是
过滤
加热液体
气密性检查
稀释浓硫酸
下述对焰色反应实验操作注意事项的说明正确的是①钾的火焰颜色要透过蓝色钴玻璃观察②先将铂丝灼烧到与原来
仅有③不正确
仅有④不正确
仅有⑤不正确
全对
下列对焰色反应实验操作注意事项的说明正确的是①钾的火焰颜色要透过蓝色钴玻璃观察②先把铂丝灼烧到原来火
仅有③不正确
仅有④不正确
仅有⑤不正确
全对
正确的实验操作在化学学习中是至关重要的下列实验操作中不正确的是
以下实验基本操作不正确的是
遵守实验室规则学习基本的实验操作方法是实验成功的重要保证．下列实验操作不正确的是
矿山救护队新队员通过培训需达到以下要求说法不正确的是
了解救护仪器、装备的操作技能
掌握一般技术的操作方法
掌握现场急救的基本常识
以下实验或实验操作不正确的是
下列对焰色反应实验操作注意事项的说法正确的是①钾的火焰颜色要透过蓝色钴玻璃观察②先将铂丝灼烧到与原来
仅有③不正确
仅有④不正确
仅有⑤不正确
全对
遵守实验室规则学习基本的实验操作方法是实验成功的重要保证下列实验操作不正确的是
检查装置的气密性
液体的量取
液体的加热
稀释浓硫酸
遵守实验室规则学习基本的实验操作方法是实验成功的重要保证下列实验操作不正确的是
检查装置的气密性
液体的量取
液体的加热
稀释浓硫酸
遵守实验室规则学习基本的实验操作方法是实验成功的重要保证下列实验操作不正确的是
检查装置的气密性
液体的量取
液体的加热
稀释浓硫酸
如图实验操作中1.正确的操作是填字母A.往试管里送入固体粉末B.往试管里滴加液体2.指出不正确的实验
不正确的实验操作对实验结果会有影响．下列实验操作不正确的是
下列对进行焰色反应的实验操作注意事项的说明正确的是①钾的火焰颜色要透过蓝色钴玻璃观察②先灼烧铂丝到火
仅③不正确
仅④不正确
③④不正确
②③④不正确
遵守实验室规则学习基本的实验操作方法是实验成功的重要保证下列实验操作不正确的是【】
检查装置的气密性
液体的量取
液体的加热
稀释浓硫酸
遵守实验室规则学习基本的实验操作方法是实验成功的重要保证下列实验操作不正确的是【】
检查装置的气密性
液体的量取
液体的加热
稀释浓硫酸
下列实验操作或装置不正确的是
遵守实验室规则学习基本的实验操作方法是实验成功的重要保证下列实验操作不正确的是
检查装置的气密性
液体的量取
液体的加热
稀释浓硫酸
下列对进行焰色反应实验操作注意事项的说明正确的是①钾的火焰颜色要透过蓝色钴玻璃观察②先把铂丝灼烧到与
仅有③不正确
仅有④不正确
仅有⑤不正确
全对
热门试题
更多
10分Babieshavethecharmtomeltanybody'sheartinstantlynooneescapesthetwinklingeyesortheinnocentsmile.Justtheirpresencewillcheeryouupmakeyouforgetyourworriesandtemptyoutoindulgeintotheirworld.1ThoughIdon'thaveanyanswertothequestionIwonderastowhatmakestheiraurasodesirable.AndIthinkthereissomethingwecanlearnfromtheyoungones. ForgiveandForget Babiescanlaughandgigglealldaybecausetheydon'tkeephatredagainstanyone.2 Doyouthinkthey'veconstructedanevilplanagainstyoubecauseyourefusedthemcandylasttime?Probablynotlifemovedonandsodidthey.Sowhydoweholdontoourpastandrefusetoletgooftheemotionalbaggage?Doesitdousanygoodexceptpreventusfromlaughingtothefullest? 3 Endlessquestionsofyoungkidscansometimesbeenoughtodraintheadultmind.Theyarealwaysbusywonderinghowthingsworkorwhythingsarethewaytheyareleavingnoroomforboredom.Theircuriositygivesthemanexponentiallearningcurvetheypickupnewthingsquicklyanddonotrefusetochange. UnconditionalLove 4Theydon'tjudgeyoubeforetheycomerunningintoyourkneesandtheydon'twalkawayifyoudon'tgivethemthesameinreturn.Theyhavenoexpectationsfromyouandsimplydowhattheirheartdesires.Ifyouwantahugthey'llgiveyouahugifyouwanttwothey'llgiveyoutwo.Sohowdoestheadultworldbecomesomaterialisticthatwedecidewhatwegivebasedonwhatwethinkwemightreceive? Livinglifetothefullestisnotadifficulttaskyoujustneedtohavetherightattitudeandanopenmind.5 A.Keepsmileeveryday B.Never﹣endingCuriosity C.Whatcanwedotofreefromtheseworries? D.Whydoweadoretheyoungonessomuch? E.Sodon'tenvythepeacefullifeofababystartlivingityourself! F.Kidshaveahugandakissforanyoneandeveryonewhowantsone. G.Theirheartispureandtheirmindemptytolaughoutloudandenjoythemoment.
8分Areyouafraidofsharks?Whataboutsnakesorspiders?PutthosefearsasidebecauseintheU.S.you'refarmorelikelytobekilledorinjuredbyadeerskippingacrosstheroad. Deercausemorethan200humansdeathseachyearplussome29000injuriesallbecauseof1.2millioncollisionsbetweenvehiclesanddeer.MostincidentsoccurintheeasternU.S.wheredeerprosperwithoutnaturalpredatorslikewolvesandmountainlions. That'stheregionintheU.S.wheredeer﹣vehiclecollisionsaresuchaproblemandwhereitseemslikeaneffectivelargecarnivorereintroductioncouldmakeareallybigdifference.sayswildlifebiologistLauraPrughfromUniversityofWashington.Shethinksitwouldhelptoreintroducepredatorslikemountainlionsalsoknownascougarspumasorpantherstopartsoftheirhistoricrangefromwhichthey'vebeendrivenout. TheresearcherssaythatbringingthepredatorsbacktotheeasternU.S.wouldmean22percentfewercollisionsbetweencarsanddeeroverthreedecades.Eachyearwouldseefivefewerhumandeaths680fewerinjuriesandasavingsofsome550million.SophieL.Gilbertthinkstherearegreatsocioeconomicbenefitsoflargepredatorrestorationthroughreducedwildlife﹣vehiclecollisionsandshesayssaysCougarshaveshownthattheycancoexistinshortdistancewithpeoplewithveryfewconflictsinalotofareasoutwest. Stillsomefolksmightbeunderstandablynervousaboutthiskindofplan.Afterallreintroducingpredatorsdoesn'tcomewithoutriskstopetsandtolivestockandveryoccasionallytopeople. OurfearoflargepredatorsissonaturalandintensethatIdon'tthinkit'spossibletojustcompletelyclearitwithstatistics…WhatIhopeisthatknowingthatthereactuallycanbesomemeasurablebenefitsmightmakepeoplealittlemoresupportiveandmaybebalancethatfearalittlebit.saysLaura. Indeedthestatisticsshowthatcougarswouldpreventfivetimesasmanyhumandeathsfromdeer﹣relatedaccidentsastheywouldcausebyattacks.Butit'llbeatoughsellthepresswillcovercougarattacksbutastatisticallypreventeddeathdoesnotmakethenews.NeverthelessIfpeopleinthewestcanputupwithhavingmountainlionsaroundIwouldhopethatNewYorkerswouldbeupforthechallengeaswell. 1WhatisclosestinmeaningtotheunderlinedwordcarnivoreinParagraph3? A.Acat﹣likeanimal. B.Adangerousanimal. C.Ameat﹣eatinganimal. D.Agrass﹣eatinganimal. 2Whydopeoplewanttobringbackmountainlions? A.Tominimizetheaccidentscausedbydeer. B.Tomaintainbiodiversityandecologicalbalance. C.Totakeupthechallengefrompeopleinthewest. D.Toreducepeople'sfearofthisdangerouscreature. 3Whyisithardtopersuadepeopletoacceptthismeasure? A.Becausetherisksoutweighthebenefits. B.Becausemountainslionslikeeatingpeople. C.Becausethebenefitsarenotaseye﹣catchingasitsrisks. D.Becausemountainlionstendtogettooclosetopeople. 4Whatisthebesttitleforthetext? A.PumaaToughSell B.ANewStudyonPuma C.DeerCauseHugeLifeLosses D.DeerorPumasaHardChoice
30分ThatholidaymorningIdidn'thavetoattendschool.UsuallyonholidaysMother1metosleepin.AndIwouldcertainlytakefulladvantageofit.Onthisparticularmorning2Ifeltlikegettingupearly. Istoodbymywindowoverlookingthe3havingnothingbettertodo.ButasitturnedoutIwassoontolearnaboutsomething4inlife. AsIwatchedseveralpeoplegobygetintotheircarsanddriveoffI5anoldmanonabicyclewithabucketonits6andabasketofragsandbottlesonitsback﹣carriage.He7fromonecartoanotherwashingandcleaningthem.Fromthewateronthegrounditseemedthathehadalready8washingandcleaningaboutadozenormorecars.Hemusthavebeguntoworkquiteearlyinthemorning. Severalthoughts9mymindasIwatchedhimwork.Hewasn'twell﹣dressed.Hehadonapairofshortsandan10T﹣shirt.Thebicycleherodewasnotbyanymeansthekindmodern11wouldwanttobeseenridingon.Butheseemed12withlife.Therehewasworkinghardathissmallbusiness13atpassers﹣byandstoppingtochatnowandthen14elderlymenandwomenontheirwaytothemarketnearby. Therewasanoticeabletouchof15inthewayheseemedtobedoingthings﹣16thewindscreen挡风玻璃thenstandingbacktoadmireitscrubbing擦净thewheelsand17standingbacktoseewhattheylookedlikeafterthescrub. Itwasa18tolearn.Ifelt.Atnoageneedonehavetobegfora19ifonehasgoodhealthandiswillingtoworkhard.ForawhileIfelt20ofmyself.YoungasIam﹣justsixteenandtherewasthisoldmanwhomusthavebeenusefullyengagedperhapsbeforethesunappearedabovethehorizon. 1A.forces B.allows C.causes D.forbids 2A.otherwise B.therefore C.however D.besides 3A.parkinglot B.busstop C.school D.market 4A.interesting B.surprising C.awful D.useful 5A.noticed B.recognized C.called D.assisted 6A.back B.handle C.wheel D.seat 7A.searched B.left C.moved D.wandered 8A.stopped B.started C.intended D.finished 9A.crossed B.slipped C.disturbed D.inspired 10A.attractive B.shiny C.simple D.expensive 11A.repairmen B.businessmen C.drivers D.cyclists 12A.busy B.content C.careful D.bored 13A.waving B.looking C.laughing D.pointing 14A.about B.for C.with D.like 15A.worry B.respect C.sympathy D.pride 16A.cleaning B.fixing C.replacing D.covering 17A.still B.yet C.again D.soon 18A.lesson B.subject C.skill D.fact 19A.business B.living C.success D.right 20A.tired B.doubtful C.fearful D.ashamed
如图1所示是手机工具箱的一款工具你可以给它取个名字叫仪它用于测量填声音的特性的．图2所示仪器它是测量的仪表量程为．
6分Summeristimeforfamilyfunandthecreationoflifelongmemories.Donotmissoutontheopportunitytohaveanunforgettablevacationwhenbookingactivitieshotelsandmoreinthesefantasticcities. SanAntonioTX Whetheryouarelookingforahistoriclookintothisfantasticcityorseekingtospendthedaygettingsomesunatoneofthethemeparksintheareathere'ssomethingforeveryone.SanAntonioishometoSeaWorldSixFlagsFiestaTexastheSanAntonioAquarium水族馆andotherfunfamily﹣friendlyattractions.ForamorehistoriclookintothecitygoontheSanAntonioGrandTourtheAlamoTrolleyTourorbooktheSanAntonioExplorerPass. MackinacIslandMI ForanadventureMackinacIslandisthedestinationofchoice.SittingonLakeHuronMackinacIslandisinvitingwiththeGrandHotelLuncheonBuffetandSelf﹣GuidedTouroraMackinacIslandCarriageTour.IfyourattentionisonafamilyvacationadmissiontotheWingsofMackinacTropicalButterflyConservatoryorawateradventurewithGreatTurtleKayakToursisagreataddition. OrlandoFL Itwouldn'tbesummerwithoutatriptoOrlando.ForthosewhowanttovisitsomeofthehottestthemeparksofalltimeOrlandoishometoWaltDisneyWorldThemeParksSeaWorldOrlandoandUniversalOrlandoResort.IfyouwouldratherskiptheamusementparksandexperiencethemorenaturalsideofOrlandothereareoptionssuchasdeepseafishinginGulfofMexicoandOrlandoZiplineToursatFloridaEcoSafaris! 1WhatcanyouenjoyinSanAntonio? A.Playinthehottestthemeparksofalltime. B.Visitabutterflyconservatory. C.Godeepseafishinginagulf. D.Haveatasteofthecity'shistory. 2WhereshouldyougoifyouwanttoexplorenatureinOrlando? A.FloridaEcoSafaris. B.SeaWorldOrlando. C.WaltDisneyWorldThemeParks. D.WingsofMackinacTropicalButterflyConservatory. 3Whatdothethreeplaceshaveincommon? A.Theyarefamousforanadventure. B.Theyarefitforsummerholidays. C.Theylieinthesamestate. D.Theyallhaveathemepark.
如图所示L1L2两个白炽灯泡．做实验时闭合开关有时会出现灯L1发光灯L2不发光的现象．则下列说法正确的是
如图所示在凸透镜的右焦点处有一平面镜垂直于主光轴放置．一束光AB经凸透镜和平面镜怎样传播画出光路图来．
下列四幅图对应的说法正确的是
探月宇航员把月球上的一块石头带回地球后如不考虑温度的影响则石头的
以下用品中在通常情况下属于导体的是
25分假定你是高三应届毕业生李华打算毕业后到英国一所大学留学.请用英语致信这所大学询问相关情况要点包括 1.简要介绍你的学习情况 2.询问入学要求和你关心的事项包括英语要求入学程序和奖学金. 注意1.词数100左右 2.可以适当增加细节以使行文连贯.
如图1所示电源电压保持不变小灯泡的额定电压为6V．闭合开关S后当滑片P从最右端滑到最左端的过程中小灯泡的I﹣U关系图象如图2所示． 则 1小灯泡的额定功率 2灯泡两端电压为1.5V时其阻值多大 3滑动变阻器的最大阻值．
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∧并在此符号下面写出该加的词. 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. Nowadaysmanypeopledriveinsteadoftakingabusorwalkingtowork.Itcausesmoretrafficaccidents.Asthestudentwhatcanwedotoguaranteeoursafe?Firstofallthetrafficrulesmustbestrictobeyed.Whenwecrossstreetswaituntilthetrafficlightturngreen.Nextdon'tforgetwalkonthepavement.FinallyIthinkitverydangerouslytowearheadphoneswhilewalkingorcycling.Sincewecan'tpayenoughattentiononthetrafficaroundussoaccidentsmayhappen.Takinggoodcareofourselvesanddon'tletourparentsworryaboutthem.
8分Bothhoneybeesandantsaresocialinsectsthatliveingroupscalledcolonies.Theysurvivebymeansoftheircollectiveintelligence.Theirdecision﹣makingpowerisdistributedthroughoutthegroupthatisnooneantorbeemakesdecisionsforthegroup.Insteadtheyworktogether.AsDeborahM.GordonabiologistofStanfordUniversitysaysAntsaren'tsmart.Antcoloniesare.Thesameistrueforbeecolonies.Althoughbeesandantsarequitedifferentphysicallytheyhavealotincommonintermsoftheirbehavior.Specificallyhoneybeesandantshavesimilarroleswithinthecolonybothhavecommunicationsystemsandbothhavethecapacityoflearning. Antscommunicatebyusingchemicalscalledpheromoneswhichcanalertotherstodangerortoafoodsource.Forexamplewhenworkerantsfindapromisingsourcetheylettherestofcolonyknowhowtofinditbyleavingatrailofpheromonesonthewaybacktothecolony.Theotherantspickupthemessageusingtheirsenseofsmell.Beesontheotherhandusemovementtocommunicatewitheachother.Workerbeessendmessagetoeachotherbymeansofadance.Differentspeedsandmovementssenddifferentmessages.Forexamplewhenworkerbeescalledscoutsgoouttofindanewhoeforthecolonytheyreturnanddoadancefortheotherworkerbeesthatindicatesthelocationofthenewhomeandhowsuitableitis.Thefasterthescoutsdancethebetterthenewlocationis. Honeybeesandantsarebothcapableoflearning.OneChinesestudyfoundthatbeescanbetrainedtolearnandrememberaroutetoafoodsource.Theresearchersalsofoundthatbeescanbetaughttorecognizehiddenobjectsandusetheconceptsofsamenessanddifferencetoaccomplishcertaintasks.Antstakethisonestepfurther.RecentAmericaresearchhasshownthatantsnotonlyhavetheabilitytolearnbutalsocanteachtheirforagingskillstootheryoungerants.Theyobservedthatolderantsaccompanyyoungantsinsearchoffoodandteachthemtherouteandhowtoavoidobstacles. Aswecanseethesocialbehaviorofhoneybeesandantsisquitesimilar.Bothcoordinatecomplexactionsandaccomplishcrucialsurvivaltasksbycooperatingingroupsconsistingofmanyindividuals.Unintelligentastheymaybeasindividualsasgroupstheyoftenshowamazingbrillianceastheygoabouttheireverydayactivities. 1Whatdoantsandbeeshaveincommon? A.Theymakeuseofcollectiveintelligence. B.Theyliveinsimilar﹣sizedcolonies. C.Theyhavesmallleadershipgroupsthatmakealldecisions. D.Theyusethesamemethodtocommunicatewitheachother. 2Whatdocsthespeedofabee'sdanceindicate? A.Thedistancetoaneighboringcolony. B.Thequalityofanewcolonylocation. C.Thediscoveryofanewfoodsource. D.Thedirectiontoapotentialfoodsource. 3Inparagraph3howdocstheauthordemonstratetheideathatHoneybeesandantsarebothcapableoflearning? A.Byusingstatistics. B.Byexplainingreason. C.Bypresentingstudyfindings. D.Bystatingopinions. 4WhatdoestheunderlinedpartforagingskillsrefertointhethirdParagraph? A.Theskillsofcommunicating. B.Theskillsofsackingfood. C.Theskillsofleaning. D.Theskillsoffindinganewhome.
小明同学利用如图所示的装置做小孔成像实验．他将饮料罐的前端开了一个很小的三角形小孔后端开口并蒙上半透明的纸．他把小孔对着烛焰则在半透明纸上看到的是
如图学校各教室都配置了饮水机身高1.6m的小芳将放置在地面上标有“16.6L”的一桶水安装到饮水机上小芳所做的功最接近的是
30分Theroomintheworkhousewheretheboyswerefedwasalargestonehall.Atoneendthemasterinhiscook'suniformandtwowomenservedthefood.This1abowlofthinsoupthreetimesadaywithapieceofbreadonSundays.Theboysate2andwerealwayshungry.Thebowlsneverneeded3.Theboyspolishedthemwiththeirspoonsuntilthey4.Afterthreemonthsofthisslowstarvationoneoftheboystoldtheothersthatsohungrywashe5onenighthemighteatthe6sleepingnexttohim.Hehadawild7eyeandtheotherboys8him.Afteralong9theydecidedthatoneofthemshouldaskformorefoodaftersupperthateveningandOliverwas10. Theeveningarrivedthesoupwasservedandthebowlswere11againinafewseconds.Oliverwentuptothemasterwithhisbowlinhishand.Hefeltvery12butalso13withhunger. PleasesirIwantsomemore. Themasterwasafathealthymanbutheturnedverypale.Helookedatthelittleboyinfrontofhimwith14.Nobodyelsespoke. What?heaskedatlastina15voice. PleasesirrepliedOliverIwantsomemore. Themaster16himwiththeservingspoonthenseizedOliver'sarmsand17forthebeadle执事.Thebeadlecamequicklyheardtheterriblenewsandimmediatelyrantotelltheboard. Heaskedforme?Mr.Limbkinsthefattestboardmemberaskedin18.Isthisreallytrue? 19Oliverwasledawaytobelockedupandan20offivepoundswasofferedtoanybodywhowouldtakehimawayandusehimforwork. AdaptedfromOliverTwist雾都孤儿 1A.belongedto B.turnedto C.accountedfor D.consistedof 2A.nothing B.cleaning C.buying D.something 3A.washing B.cleaning C.buying D.changing 4A.finished B.starved C.shone D.slept 5A.that B.until C.when D.before 6A.boy B.master C.bowls D.spoons 7A.big B.bad C.angry D.hungry 8A.hated B.feared C.believed D.trusted 9A.quarrel B.bargain C.argument D.discussion 10A.elected B.chosen C.determined D.recognized 11A.full B.empty C.broken D.available 12A.shy B.brave C.worried D.frightened 13A.pleased B.hopeful C.desperate D.exhausted 14A.amusement B.amazement C.intension D.appreciation 15A.calm B.clear C.faint D.cautious 16A.hit B.treated C.greeted D.warned 17A.begged B.sent C.shouted D.asked 18A.horror B.sadness C.curiosity D.frustration 19A.Besides B.Therefore C.However D.Eventually 20A.award B.praise C.reward D.punishiment
8分Mid﹣afternoononaparticularlybusyTuesdayItookleaveofmydeskatworkandwalkedintoalocalStarbucksonlytofindaspacewhereneithermyclients客户normychildrenwouldaskmetodosomething. InsideIranintoKateaco﹣workerofmine.Thetopicofparenthoodcameup.Icomplainedabouthowpackedmyschedulewas.FromtheminuteIwokeuptotheminuteIfellasleepIwasconstantlyindemandandalwayshadsomeoneknockingatthedoor.ButabitofsadnessseemedtocomeoverKate'sface. Wellmydaughter'sinSanFranciscoandshedoesn'tseemtoneedmeatallthesedays.Katesaid.ItwasinthatmomentthatIrealizedalthoughImightoftenfeelinhighdemandtherewillcomeadaywhenI'llactuallymissthatsamestressInowcomplainabout. Andasourconversationcontinueditturnedtoourchildren'syoungeryearswithKatesmilingproudlythinkingofthelittleboyandgirlsheraisedwhoarenowamanandawoman.ButInoticedhersmilewasmarkedwithregret.Sheexplainedthatsheoftenwonderedaboutwhatshecouldhavedonedifferentlywhenherchildrenwereintheirearlieryears. ThisgotmethinkingIsregretanunfortunatefootnote注脚toparenthood?WiththatinmindIaskedsixolderparentsonequestionWhatisyourbiggestregretfromyourearlydaysasaparent? Itturnedoutthatallofthemthoughttheycouldhavedoneitbetter.Buteachofthemalsohasastronghealthyrelationshipwiththeirkids.Whateverregretstheirparentsmighthavehadabouttheirupbringingonethingisclear﹣itdidn'taffecttheminameaningfulway. ThebottomlineisweallfeellikewecouldbedoingthisparentingthingbetterAndquiteclearlyyearslaterwe'restillgoingtolookbackandwishwetriedthingsdifferently.Butthepastcan'tbechangedandneithershouldit. 1Whatcanbeinferredfromthefirstthreeparagraphs? A.Katehadthesameproblemastheauthor's. B.Thetwopeoplehadarrangedtomeetinthecoffeeshop. C.Katewenttothecoffeeshopsonoonecouldfindherthere. D.Theauthorwenttothecoffeeshoptoescapefromthepressuresaroundhim. 2WhydidKatefeelsadandregretful? A.Becausesheandherdaughterhadafight. B.Becauseshehadn'tpaidenoughattentiontoherkids. C.Becauseshewasdisappointedwithherkids'performance. D.Becauseshethoughtthatshecouldhavedonebetterinraisingherkids. 3Whatdidtheauthorfindwhenhespoketosixolderparents? A.Someoftheparentshaveabadrelationshipwiththeirkids. B.Hewasmovedbytheloveoftheseparentsfortheirchildren. C.Theseparentsimprovedtheirbehavioraftertheirkidsgrewup. D.Noneoftheparentswerecompletelysatisfiedwiththewaytheyraisedtheirkids. 4Whatshouldparentsdoaccordingtothelastparagraph? A.Givemorelovetotheirkids. B.Letyourchildrengrowupwithfreedom. C.Cherishthepresenttimeanddoone'sbesttobeaparent. D.Neverstoplearninghowtobeagoodparentfromothers.
如图所示小球从距离地面一定高度的O点沿x轴竖直落下不计空气阻力图象表示小球某种形式的能量E随下落高度x的变化情况．E可能表示小球的
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. NowadaysSenior3studentsaregenerallyfacedwithalotofpressurethatisrathercommon.Toreduceitthefollowingsuggestionmayhelp.Firstofallknowexactlywhatleadtoyourpressureandthenyoucantakemeasurestodealwithit.Secondlysetupagoalthatisnottoohighintheotherwordsdon'tputtoomanypressureonyourself.Thirdlyfindingawaytorelaxyourselfoccasionally.Forexampleyoucanlistenmusicgoswimmingorjustsimplegowalking.Eventuallymakefriendswithothersforexampleyourclassmatesyourteachersandourparents.Theywillunderstandyouandcometoyourhelpthoughyouarereallyintrouble.Inawordnevergetyourselfstuckinthepressureforimpossibleisnothing.
在“探究电流与电阻的关系”实验中 1请用笔画线代替导线按图1将图2中完成电路的连接 2利用图1所示电路实验得到图3所示的电流随电阻变化的图象．图中阴影部分表示的物理量是计算其数值是 3在每次换上不同的阻值的电阻R0都要调节滑动变阻器是使R0两端电压选填“增大”“不变”或“减小”．图1的电源电压9V某次接入一个阻值标注值模糊的电阻R0时正确操作后读出电流表示数此时滑动变阻器连入电路的阻值估计为2Ω则这次实验所接入的电阻R0为Ω．
8分Thealarmsounds.Studentsswingtheirbackpackovertheirshoulderboardtheschoolbusmaketheirwaytotheirhomeroomandthebellrings﹣schoolisback.ButformorehomesinAmericaschoollooksmorelikestudentswakingupmakingtheirwaytothediningroomorhomeofficesettinguplaptopsandlearninginthecomfortofhome. Virtual虚拟的schoolingdescribedasapublicschoolthatoffersonlyinstructioninwhichstudentsandteachersareseparatedbytimeand/orplaceandinteractionoccursviacomputersand/ortelecommunications电信technologieshasincreasedoverthepastdecade.AccordingtotheNationalEducationPolicyCenterenrollments注册人数invirtualschoolswas278518betweenthe2015﹣2016schoolyearandthe2016﹣2017schoolyearincreasedby17000. ForArizonaVirtualAcademyafull﹣timeonlinepublicK﹣12schooltheyuseK12Inc.curriculums.K12Inc.servesstudentsinall50statesandmorethan100countrieswithdigitallearningplatformsandtechnologyprovidingonlineeducation.Wealwaysareimprovingourplatformsandthetechnologythatweusetomakesurethatwe'rekeepingupwiththechangingtrendsnotonlywitheducationbutalsowithtechnologyDr.KellyVanSandesaid.Anotherpieceofnewtechnologythey'verolledoutisanewappwhereparentscanfindvirtualschoolsavailableintheirarea. CarrieFaulknerchosetoenrolltwoofherchildreninArizonaVirtualAcademy.Shesaysthey'vedoneschoolingonlineinChicagoinCaliforniaatrestaurantsandonhercousin'sfloorinKansas.Itdoesn'tmatterwhetherhehersonisonthecouchinhisbedoratthekitchentablehecandoschoolingwhereverhewantstoFaulknersaid.IwishtheyhaditformebackwhenIwasinschool.Thatwouldhavebeenawesome. 1Whydoestheauthorcomparethetwokindsofschoolinginthefirstparagraph? A.Toattackrealschooling. B.Togiveanexampleofvirtualschooling. C.Tointroducethetopicvirtualschooling. D.Todescribevividlystudents'goingtoschool. 2Howmanystudentsattendedvirtualschoolsduringthe2016﹣2017schoolyear? A.295518 B.17000. C.278518. D.147759. 3WhatcanweinferaboutArizonaVirtualAcademy? A.Theyprovidebothonlineandofflineeducation. B.They'reintendedforstudentsintheUnitedStates. C.Theirnewappletspeoplefindschoolsworldwide. D.Theirplatformsandtechnologyareveryadvanced. 4WhatisCarrieFaulkner'sattitudetovirtualschooling? A.Ambiguous. B.Cautious C.Supportive. D.Disapproving.
15分Thesilentkiller﹣airpollutioncausessevenmillionpremature过早的1deathayearnotjustin2developcountriesbutalsoinUKandtheUSAaswell.InChinapeoplearewellawareofthehealthproblemsitbrings. Icheckeveryparteveryday.IfithasheavyairpollutionIwillpreparemasksformyfamily.Idislike3whentheairisbad.BecausebadairmakesitdifficultformetobreatheandIthinkitdoesinfluencemy4performatwork.Anewresearchinchinahasalsofoundalinkbetweenairqualityandlevelsofintelligence.Inthestudy25000peoplelivingacrossChina5testinlanguageandmathskillslastyear.Theyfoundtheresultsofthose6livedinmorepollutedareaswere7negativeimpactedespeciallyinlanguages.Itaddstoagrowingbodyofevidencethatairpollutionhasaneffectnotjustonthelungsandheart8onthebrain. Thisresearchshowsthatthelongerweareexposedtoairpollutionthe9manyproblemswe'restoringupforlaterlife.CampaignershopethisstudywillpersuadetheBritishgovernment10thinkhardbeforeitpublishesitscleanairstrategynextyear.
如图为汽油机工作过程中某一冲程的示意图此冲程的名称及能量转化是
8分Whenmyfathermarriedmymotherin1943hegavemymothera1937crowncoinandtoldhertokeepitinthebackofherpurseandnottospendit.Thiswouldmeanthatshealwaysfeltthatshewasprotectedandwouldalwayshavemoneyifshereallyneededit. WhenIwasmarriedin1970myhusbandwhohadheardthisstoryobtaineda1937crowncoinformeandIhavealwayskeptitinmywalletandIhavealwayshadenoughformyneeds. Afriendrecentlyfellonhardtimespartlythroughexternal外部的circumstancesandpartlythroughpoorplanning.FriendsandIhaveloanedhermoneypaidherbillsgivenherfoodandeventriedtoteachherbudgettechniquesbutnoneofthemhasbeenasolution.Shehasjustslippeddeeperanddeeperintofinancialtroubleanddepression. LastweekshelookedpaleandunwellverydepressedandhopelessverysadforafriendtoseeandIthenthoughtabouthowthecrowncoinaphysicalreminderofanother'scareandlovehadprotectedmesoIwenttothebankfora﹩100dollar﹣bill. Itoldmyfriendthestoryandaskedhertokeepthe﹩100inthebackofherwallet.Itturnedoutthatshedidn'thaveawalletsosheputthemoneyinalittlepencilcasewhereshekepthercoins.Sheimmediatelyfeltbetter﹣Ifeelrichandthankyouforbeingagoodfriendshesaidandwewerebothabitteary. IwenthomeandrememberedalittlewalletIhadthatI'dneverusedandthoughtI'llgivethattomyfriend.Iopeneditandinsidefound﹩100. 1Whatdidthe1937crowncoinfromtheauthor'sfathermeantohermother? A.Hisconcernforher. B.Hispityandprotectionforher. C.Hiscareandloveforher. D.Hisprideandrespectforher. 2Wheredidtheauthor'sfriendkeepthe﹩100dollar﹣bill? A.Inthebackofherwallet. B.Inalittlepencilcase. C.Inthepocketofherraincoat. D.Inthelayerofhersuitcase. 3Whatcanbeinferredfromthelastparagraph? A.Theauthorbecamerichallofasudden. B.Theauthor'sfriendwouldreceiveawalletasagift. C.Theauthor'sfriendwasnottouchedbyherstory. D.Theauthorfeltuncomfortablewhenreceivingthebill. 4Whatcanbethebesttitleforthetext? A.Acrowncoin B.Thehelptoafriend C.Ahardlife D.Agiftfrommyfather
在下列现象中可能引起保险丝熔断的是 ①插座中的两根线头相碰②开关中的两根线头相碰 ③电路中增加了大功率用电器④户外输电线绝缘皮损坏．
25分假定你是李华你的英国朋友David写邮件告知你他打算购买红楼梦ADreaminRedMansions英文版但不知道纸质版本和有声版本哪个更适合.请你给他提出建议要点如下 1.你的建议 2.你的理由至少两条 注意 1.词数100左右 2.可以适当增加细节以使行文连贯. 参考词汇有声读物audiobook
如图所示小刚透过装水的圆柱形杯子观察铅笔．手中铅笔的笔尖原来朝左的可他看到的像却是笔尖朝右则他看到的是铅笔的选填“实”或“虚”像这是因为杯子和水起到了凸透镜的作用选填“近”或“远”视眼镜用的就是这种透镜．若将铅笔继续选填“靠近”或“远离”杯子他所看到的像将会变成笔尖朝左．
登山是人们喜爱的一种健身方式登山时为避免后仰上身应稍向前倾同时背囊中较重的物品最好放在如图所示中的选填“A”或“B”位置处．图中背着背囊的人提起左脚时可看作以右脚跟o点为支点的一个杠杆请作出B点重物受到的重力和力臂．
如图所示的四个实例中其设计是考虑到要减小压强的是
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