首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
下列实验现象描述正确的是（ ）
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
观察和实验是学习化学的重要方式下列实验现象描述正确的是
下列对实验现象描述不正确的是
描述下列实验现象其中正确的是
化学是一门以实验产基础的学科化学实验时要注意观察实验现象下列实验现象描述不正确的是
观察和实验是学习化学的重要方式．下列对有关实验现象的描述中正确的是
正确描述实验现象是进行化学实验的一项基本技能．下列实验现象描述正确的是
铜绿受热分解，变成红色固体
木炭在氧气中燃烧，发出白光，放出二氧化碳
细铁丝在氧气中剧烈燃烧，火星四射，生成黑色固体
电解水时，收集到的氢气和氧气的气体质量比为1：2
下列对有关实验现象的描述正确的是
下列化学实验现象描述正确的是
下列有关实验现象的描述正确的是
红磷燃烧产生白雾
硝酸铵溶于水温度升高
碘与淀粉作用呈蓝色
铁与稀硫酸反应溶液为棕黄色
实验是化学研究的基础对下列实验的现象描述不正确的是
实验①溶液不褪色
实验②溶液褪色
装置③用于石油的分馏
实验④饱和碳酸钠溶液上方出现油状液体
下列对实验现象的描述正确的是
实验是化学研究的基础下列有关实验装置或现象描述正确的是
图2溶液褪色，加热后不恢复
图3烧瓶中形成喷泉
图4制取少量氨气
图5石油分馏
下列关于实验现象的描述不正确的是
科学实验是人类获取科学知识验证科学理论的重要手段其中对实验现象的正确描述很重要以下实验现象描述正确的
红磷在空气中燃烧，产生大量白雾
细铁丝在氧气中燃烧，火星四射，生成白色固体
氢氧化钠溶液与硫酸铜溶液混合产生蓝色沉淀
硫在空气中燃烧发出蓝紫色的火焰
下列对有关实验现象的描述正确的是
下列有关实验现象的描述不正确的是
正确观察描述实验现象是同学们必备的实验技能右图所示的两个实验现象都有错误请加以改正实验⑴将燃着蜡烛迅
下列实验现象描述正确的是
下列实验现象描述正确的是
下列关于实验现象的描述中正确的是
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
10分Stressisamajorprobleminthemodernworld.1Itiscommonamongofficeworkers.Managingitisnecessaryforpeopleinordertocreateawork﹣lifebalance.Sohowcanyougoaboutremovingstressthroughtheancientartofgardening? Surroundyourselfwithnature.Treesbirdsandscentoftheoutdoorsaregreatwaystohelprelax.2Soinordertoremovestressthroughgardeningyouneedtogrowlotsofplants. Makeitcomfortable.3Afterallwhat'sthepointofmakingitbeautifulifyoucan'tsitorwatchyourflowersgrowafterwards?Agood﹣qualitysetofgardenfurnitureistheonlywaytomakesureyourgardenisascomfortableaspossibleinordertoremoveyourstress. 4Toreallyappreciategardenspaceforwhatitisyouneedtoleaveallofthestressesofmodernlifebehindwhichmeanskeepingyourphoneindoors.Yesitmaybehardatfirst.Butafterawhileitwillbegintofeelnormalandevengood.Sometimesnotknowingwhatishappeningintheoutsideworldistheonlywaytoenjoythetranquility宁静ofyourgarden. Invitefamilyandfriends.Doyouwanttogetthebestwaytotrulyremovestressthroughyourgardeningefforts?Shareitwithyourfamilyandfriends.Agoodbarbecueaswemoveintothewarmermonthsisthebestportofcall.5Afterawhileyourgardenspaceshouldbecomearelaxationandstress﹣freezone. A.Avoidusingtechnology. B.Inparticularitcanbeakillerifleftuntreated. C.Toattractwildlifesetfeedingtablesinyourgarden. D.Thepeacefulnessofnatureactsasanaturalwaytoreducestress. E.Justmakesureyoudon'tinviteanyonelikelytocauseanargument. F.Itgivesyougoodfoodgoodcompanyandagoodchancetoremovestress. G.Furnitureisnecessaryforyoutomakethemostofyourcomfortablegarden.
下列四幅图对应的说法正确的是
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.
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.
8分Manysmall﹣businessownerswatchedrecentrevelationsaboutFacebookwithmixedemotions.LikemostAmericanstheyweresurprisedtodiscoverhowmuchinformationthesocialmediagiantcollectedonitsusers.ButwhenitcomestosmallbusinessFacebookisatransformativeadvertisingplatformforsmallbusinessesnoteasytoreplace. Let'ssayyouownasmallseafoodrestaurantandTuesdaynightsare﹩1oyster牡蛎nights.Traditionaladvertisingmethodscostalotandmustbeplannedlonginadvanceandit'shit﹣or﹣missastowhetheryouactuallygetinfrontofoystereaters.WithFacebookonTuesdaymorningwithafewclicksyoucantargetFacebookusersinyourZipcodewholoveoystersandeatingoutandareoverage21sotheycanbuydrinkswhichiswhyyouhave﹩1oysternights.Andyoucandothisforaslittleas﹩20. Inmyworkwithsmallbusinessesformorethan25yearsI'veneverseenamoreeffectivemethodofmicro﹣targetingprospects.ThoughFacebookisaneffectivetoolforsmall﹣businessadvertisingdoesnotjustify证明合理thecompany'scollectingvastamountsofdataorallowingusers'datatobeinvaded. Ourprimaryconcernwaspeople'sexperienceonFacebooksaidDanLevyFacebook'sVicePresidentSmallBusiness.Ourteamshavealsobeenspeakingtosmallbusinessesandtheywanttomakesurewe'readdressingthesituationandweare. OneconcernsmallbusinesseswantFacebooktoaddressisprotectingtheiruploadedlists.Noonewantstheircustomers'informationmisusedoraccessedbyothersespeciallycompetitors. Small﹣businessownersarerightfullyconcernedaboutprivacy.Theydon'twantFacebooktoknoweverythingaboutthemandtheydon'twanttheircustomerlisttobeletouttoothers. Butsmallbusinessesdon'twanttolosethiseffectiveadvertisingmediumeither.MostFacebookadsarenotinvasiveoroffensive.Andmanyreceiversmayactuallybenefitfromreceivinghighlytargetedads﹣afterallthoseoysterloverslikelearningaboutTuesdaynight﹩1oysternight. 1HowdoestheauthorexplainFacebook'sfunctioninparagraph2? A.Byperforminganexperiment. B.Byleadingasurvey. C.Byanalyzingthedata. D.Bygivinganexample. 2Whatistheauthor'sattitudetowardsFacebookmentionedinparagraph3? A.Objective. B.Supportive. C.Doubtful. D.Respectful. 3WhatmakessmallbusinessesconcernedaboutFacebookaccordingtothetext? A.WhatpeopleexperienceonFacebook. B.ThatFacebookupdatesthelistsconstantly. C.ThattheircompetitorsbenefitmorefromFacebook. D.ThatFacebookwillgiveawaytheircustomerlist. 4Whatcanbethebesttitleofthetext? A.Facebookisbenefitingsmallbusiness B.Facebookamixedbagforsmallbusiness C.Facebookisprotectingcustomers'privacy D.Facebookapowerfuladvertisementtool
15分TheHongKong﹣Zhuhai﹣MacaoBridgetheworld's1longcross﹣seabridgeentersthehistoryofhumanengineeringandconnectionasapointofprideupon2itopeningtotrafficat9amonOct.242018. Onedayaftertheopeningwasannouncedataceremony3holdinZhuhaithebridge'sportsinthreedifferentadministrativeregionsstartedservingtravelersaround﹣the﹣clockopening24hoursadaysevendaysaweek.4ensurefasterboundarycrossingsforpassengerstheMacaoandZhuhaiportsjointlyuseaone﹣offimmigrationclearancemodel5allowstravelerstoqueueuponlyoncetofinishbothexitandentryproceduresofthetwocitiesinabout6second. Apart7privatecarstaxisandgoodsvehiclestwotypesofpublictransportation﹣shuttlebus班车andcross﹣boundarycoach﹣﹣canalsorunontheHZMB.8frequencyofshuttlebusesisabout5﹣10minutesduringpeakhours.Bookingticketsfortheshuttlebusonlineinadvance9beavailablesince9amonTuesday.WiththebridgenowinservicethetravelingtimebetweenZhuhaiandHongKongInternationalAirportwill10shortenfromfourhoursto45minutesandthetimebetweenZhuhaiandHongKong'sContainerTerminalswillbecutfrom3.5hoursto75minutes.
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 Traintravelisquiteadifferentexperiencetoday.LittlethingscanmatchChina'shighspeedrailsystemespeciallythespeedatthatitisstilldeveloping.ThespeedknownasChinaspeed. Chinaspeedmeansalotoftothecountry.Thepast30yearshadseenChina'srapiddevelopmentinvariousareaslikeeconomyandtechnology.Wehaveseendozensoftallbuildingspringupalmostovernightwithroadsandhighwaysreachedeverycorner.Besidesmobilepaymentsandonlineshoppingareplayingincreasingimportantrolesineveryone'slife.WithsogreatachievementsChinaspeedisnowamodeladmiredbyawholeworld.
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.
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.
8分AfewweeksagoIcalledanUbertotakemetotheBostonairportforaflighthomefortheholidays.AsIslidintothebackseatofthecarthewarmintonations语调ofthedriver'saccentwashedovermeinafamiliarway. IlearnedthathewasarecentWestAfricanimmigrantwithafewyoungchildrenworkinghardtoprovideforhisfamily.IcouldrelateIamthedaughteroftwoEthiopianimmigrantswhomadetheirshareofsacrificestoensuremysuccess.ItoldhimIwasonacollegebreakandheadedhometovisitmyparents.That'showhefoundoutIgotoHarvard.Anapprovingeyeglintedatmeintherearviewwindowandquicklywecrossedtheboundariesofrideranddriver.Ibecamehisdaughterallgrownup﹣theproductofhissacrifice. Andthencamethefateful致命的questionWhatdoyoustudy?IansweredhistoryandliteratureandtheprideinhisvoicefadedasIknewitmight.Ididn'tevengettoaddandAfrican﹣AmericanstudiesbeforehecutinhisvoicethickwithdisappointmentAllthatworktogetintoHarvardandyoustudyhistory? HereIwashisdaughtersquanderingthebiggestopportunityofherlife.Hewentontodelivertheage﹣oldlecturethatallimmigrantkidsknow.Wearetobecomedoctorsorlawyersifourparentsarebeinggenerous﹣tomakemoneyandsendmoneybackhome.TheunspokendemandmadeacrossgenerationswhichmyUberdriverlaidoutplainlyissimpleFulfillyourroleinthenarrative故事ofupwardmobilitysoyourchildrencandothesame. IusedtofeelanxiousandbackedintoacornerbythequestioningbutnowasajuniorincollegeI'mgratefulfortheirsupportmorethananything.ThisholidayseasonI'vepromisedmyselfIwon'thuffandgetannoyedattheirinquiries.Iwon'tdefensivelyrespondwithbutIplantogotolawschool!whenIgetunrequestedadvice.I'lljustsmileandnodandenjoythewarmthoftheoccasion. 1Whatdisappointedthedriver? A.Theauthor'smajorsinhistoryandliterature. B.Theschoolthattheauthorisattending. C.Theauthor'sattitudetowardshim. D.Theauthor'sinterestsinAfricanAmericanstudies. 2WhichofthefollowingcanreplacetheunderlinedwordsquanderinginParagraph4? A.creating B.wasting C.valuing D.seizing 3Whyareimmigrantkidsexpectedtobedoctorsorlawyers? A.Theyareverysmartingeneral. B.Theirparentsarehighachievingaswell. C.Theyhavemoreopportunities. D.Theirparentswantthemtomoveupwardinsociety. 4Howdidtheauthorreacttothedriver'squestioning? A.Gettingupset. B.Feelingsatisfied. C.Appreciatinghisconcern. D.Defendingherself.
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
6分HerearesomeprofessionsAmericansconsidertobethemosthonest.Maybetherestofuscanlearnfromwhatthesepeopledotoestablishgoodrelationshipswithothers. MEDICALDOCTORS JackJacoubAge44FountainValleyCalifornia Itrytointroducemyselfinapleasantway.IsitdownIdon'tstand.Imakegoodeyecontactwiththepatientandhisorherfamily.Communicationskillsarekeyaswellasshowingunderstandingandavailability.Foraphysicianthesinglemostrewardingthingiswhensomeonewhohasseenyourworkchoosesyou. ENGINEERS ChrissyKeaneAge41CroftonMaryland Idon'tknowthatbeinganengineermeansyouareautomaticallytrustworthy.HoweverIdothinkthatmostengineersliketofollowrulesandbeorganized.Theytellyouwhattheythinkwhetheryouwanttohearitornot.Thoseareimportantelementsinbuildingtrust. POLICEOFFICERS G.M.CoxAge64FortWorthTexas AsapoliceofficerIhavethebestinterestsofthepeopleIserveinmyheartandinmyactionsandI'mgoingtotreateveryonethesameway.Ialwayswanttogouptopeopleandspeaktothemwithrespect.don'ttalkdowntothem.Youhavetoestablishandmaintainthattrust.Beequal! 1WhatdoesJackJacoubthinkimportanttodohisjob? A.Beingcommunicative. B.Experience. C.Self﹣introduction. D.Beingopen﹣minded. 2HowdoesGM.Coxtreatpeopleinhisjob A.Strictly. B.Cautiously. C.Equally D.Actively 3Whatdotheyhaveincommon? A.Theyarewarmhearted. B.Theydeservetrust. C.Theyfollowrules. D.Theyaregoodorganizers.
30分Overthesummeroneofmyteenageson'shighschoolclassmateslivedinaremotecountryplace.Thereshe1reliableInternetandphoneservice.Becauseitwas2tocallortexthisfriendorreachheronsocialmediaWilllandedonanold﹣fashioned3tostayintouch.Onceaweekhetriedtositdownandwritealetter. Ihaven'twrittenaletterforyears.WhenWillaskedforwritingmaterialstoget4Istruggledtorememberwherewe5thepaperandenvelopes.Butoncewefoundthe6fromashelfandWillbikedtothepostofficefor7hesettledintoaspotnearthelivingroomwindowandsettowork.Asmyson8lettersIjustspenttimeinanothercornerofthehouse9someessaysofoneoftheworld'sgreatest10writersVirginiaWoolf. Woolfwhodiedin1941worriedinherowntimethatas11becamecheaperandeasierpeoplewould12lessaboutwhattheyweretryingtosay.Theywould13thedreamoflettersthatwerethe14ofphrasesandtheartsofthewritingmaster. The15andemailswenowdashoffbythedozeneachdayseemthefulfillmentofWoolf's16.I'mnotgivingupmysmartphoneandlaptopandI'dbe17withouttheconvenienceofconnectingwithmasseseachdaywithafewquickkeystrokes按键. Butmy17﹣year﹣old18methispastsummerthatinanageof19communicationconventionalmailstillhasits20. 1A.changed B.lacked C.found D.rented 2A.polite B.unnecessary C.hard D.convenient 3A.alternative B.value C.brand D.bike 4A.continued B.touched C.offered D.started 5A.put B.lost C.bought D.swapped 6A.necessities B.ideas C.phones D.essays 7A.mailboxes B.envelopes C.stamps D.postcode 8A.sent B.read C.tore D.wrote 9A.settingaside B.dippinginto C.improvingon D.gettingridof 10A.lecture B.anecdote C.letter D.idiom 11A.communication B.judgement C.commitment D.journey 12A.consult B.know C.think D.quarrel 13A.takeup B.giveup C.makeup D.callup 14A.exchange B.process C.review D.polish 15A.excuses B.problems C.chances D.texts 16A.suggestions B.ambitions C.fears D.dreams 17A.betrayed B.lost C.charged D.misunderstood 18A.warned B.prepared C.awarded D.reminded 19A.unbearable B.expensive C.instant D.permanent 20A.virtues B.disadvantages C.criteria D.independence
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．
如图所示的四个实例中其设计是考虑到要减小压强的是
8分Ride﹣hailingappsandrobotcarspromisetochangehowwegetaroundandtheeffectsarealreadybeingfelt.TrafficinNewYorkisslowingdown.JamsarecommoninManhattanespeciallyinitsbusinessdistricts.Daytimetrafficinthebusiestareasnowmovesalmost20%moreslowlythanitdidfiveyearsago. Itseemsaplaceripeforwideuseofride﹣hailingappsthatyoumightthinkwouldreducesomeofthejams.HoweverthoseappsappeartobemakingthingsworseastraffichasslowedinlinewiththegrowingpopularityofappssuchasUberandLyftastudybytransportexpertBruceSchallersuggests. OverthefouryearsofthestudythenumberofcarsinManhattanseekingride﹣hailingfaresincreasedby81%.Therearenowabout68000ride﹣sharingdriversacrossNewYork.That'saboutfivetimesthenumberoftheyellowcabslicensedtooperatetherehefound.Therearesomanydrivershisworksuggestswhospendabout45%oftheirsparetimejusttouringforfares.Thatisalotofunusedcarsblockingalotofbusystreets. Simplephysicsexplainswhyride﹣sharingvehiclesarecausingnotcuringjamssaidJarrettWalkerapublictransportpolicyexpertwhohasadvisedhundredsofcitiesaboutmovingpeople. Lotsofpeoplearedecidingthat'Ohpublictransportisjusttoomuchtroublethismorning'orwheneverwhichcausesashiftfromithetoldtheBBC.Thatmeansmovingpeoplefromlargervehiclesintosmalleroneswhichmeansmorevehiclestomovethesamepeople.Thereforemoretraffic. Datagatheredaboutride﹣sharingdriversillustrateshowtheycontributetocongestion塞车saidProf.ChristoWilsonacomputerscientistatNortheasternUniversitywhohasstudiedtheservices.YoucanlookatthetrafficpatternfortheUbervehiclesanditperfectlymatchesthepeaksfortherushhourandthepeaktimeofadayhesaid.Theyareoutthereinforceattheworstpossibletimes. 1WhatcanweknowaboutthecabsinNewYork? A.Morecabsareneededtomeetthedemand. B.Theyoftentouraroundthecityseekingusers. C.Theirfaresincreasedgreatlyoverthefouryears. D.Thenumberofthemisfarlessthanride﹣sharingcars. 2WhatisChristoWilson'sattitudetowardride﹣sharingpractice? A.Neutral B.Negative C.Indifferent D.Supportive 3WhichofthefollowingbestreplacesitunderlinedinParagraph5. A.Ajam. B.Publictransport C.Acar. D.Aride﹣sharingvehicle. 4Whatisthebesttitleforthetext? A.WorseRoadJams. B.AppMakesTerribleJams. C.EffortsNeededforTraffic. D.TechnologyCountsinFuture.
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