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下列实验现象描述正确的是（ ）
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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
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燃气灶能效标准已于2015年4月1日正式实施这标志着与市民生活息息相关的燃气灶具进入节能时代．如图是一款燃气灶的示意图 1所示物质中属于合金的是属于有机合成材料的是． 2燃气灶所用燃气包括煤气天然气石油液化气等写出天然气的主要成分燃烧的化学方程式． 3燃气的火焰有时呈现黄色或橙色锅底出现黑色物质的原因是． 4熄灭燃气灶的方法是关闭阀门其灭火的原理是．发现燃气泄漏应采取的措施是．
同学们在完成铁与硫酸铜反应的实验后欲从废液含硫酸铜和硫酸亚铁中回收金属铜并得到硫酸亚铁其设计的流程如下 1操作a的名称是． 2操作ab和c中都需要用到的玻璃仪器是其在操作c中的作用是． 3写出流程中固体的成分是写化学式写出加入过量A时反应的化学方程式．
如图所示物体A的长度的测量值为cm．
8分RosalindFranklinalwayslikedfacts.Shewaslogicalandpreciseandimpatientwiththingsthatwereotherwise.Shedecidedtobecomeascientistwhenshewas15.ShepassedtheexaminationforadmissiontoCambridgeUniversityin1938anditsparkedafamilycrisis.Althoughherfamilywaswell﹣to﹣doandhadatraditionofpublicserviceandcharityherfatherdisapprovedofuniversityeducationforwomen.Herefusedtopay.AnauntsteppedinandsaidFranklinshouldgotoschoolandshewouldpayforit.Franklin'smotheralsotookhersideuntilherfatherfinallygavein. ShewasinvitedtoKing'sCollegeinLondontojoinateamofscientists.TheleaderoftheteamassignedhertoworkonDNAwithagraduatestudent.Franklin'sassumptionwasthatitwasherownproject.Thelaboratory'ssecond﹣in﹣commandMauriceWilkinswasonvacationatthetimeandwhenhereturnedtheirrelationshipwaspuzzling.Heassumedshewastoassisthisworksheassumedshe'dbetheonlyoneworkingonDNA.TheyhadpowerfulpersonalitydifferencesaswellFranklindirectquickdecisiveandWilkinsshyhesitantandpassive. In1953WilkinschangedthecourseofDNAhistorybydisclosingwithoutFranklin'spermissionherPhoto51tocompetingscientistJamesWatsonwhowasworkingonhisownDNAmodelwithFrancisCrickatCambridge.UponseeingthephotographWatsonsaidMyjawfellopenandmypulsebegantoraceaccordingtoauthorBrendaMaddoxwhowrotethebookRosalindFranklinTheDarkLadyofDNA. ThetwoscientistsdidinfactusewhattheysawinPhoto51asthebasisfortheirfamousmodelofDNAwhichtheypublishedonMarch71953andforwhichtheyreceivedaNobelPrizein1962.CrickandWatsonwerealsoabletotakemostofthecreditforthefindingtheyincludedafootnoteacknowledgingthattheywerestimulatedbyageneralknowledgeofFranklin'sandWilkin'sunpublishedcontributionwhenmuchoftheirworkwasrootedinFranklin'sphotoandfindings.Franklindidn'tknowthatthesemenbasedtheirarticleonherresearchandshedidn'tcomplaineitherlikelyasaresultofherupbringing.Franklindidn'tdoanythingthatwouldinvitecriticism…thatwasbredintoherMaddoxsaid. 66.Wilkins'relationshipwithFranklinwascharacterizedby. A.unityandharmony B.confusionandcompetition C.cooperationandmiscommunication D.misunderstandingandconflict 67.WhatdoesWatsonmeanbysayingMyjawfellopenandmypulsebegantorace? A.HewasconfusedthatCrickhadnotmadethisdiscovery. B.HewassurprisedthatWilkinshaddiscoveredthisinformation. C.HewassatisfiedwiththeimportanceofPhoto51. D.HewasanxiousabouttheprogressWilkinsandFranklinhadmade. 68.WhatisBrendaMaddox'smainintentionaccordingtothequoteinthelastparagraph? A.Tore﹣evaluatetheimportanceoftheDNAmodel. B.TocriticizeKing'sCollegeandCambridge. C.ToemphasizeFranklin'simportanceinscience. D.TodenyWatson'sandCrick'scontributiontoscience. 69.Franklin'scareerasascientistdemonstrates. A.thatherworkwaspointingatthemostdifficultproblem B.thatshewastheonlyfemalescientistduringtheperiod C.theimportanceofDNAinmodernscience D.thatperseveranceleadstosuccessandrecognitionoffieldscientists.
8分 Chicago ChicagoisanincrediblecityandakeybusinesscenterfortheMidwest.Thatmeansthatsoonerorlatermostbusinesstravelers1findthemselvesthere.ThisCityGuideforChicagoprovidesbusinesstravelerswithalltheinformationtheyneed2planasuccessfultriptoChicago.Ofcourseitalsohelpyoufindouthowtoenjoy3whileyou'rethere. Unlessyou'rejustinChicagoforthedaythere'sagoodchancethatyou'llhavesometimeafterworktoexplorethesleeplesscityand4you'rereadytotakeabreakfrombusinessmeetingsorsimplywanttothrowinsomesightseeingafterabusyweekatwork.5helpbusinesstravelersplantheirfreetimebetterwe'vecreatedthisoverviewofthingstodoinChicago.We'llhelpyoufeelathomeinoneofAmerica'sbiggestcities. Ifyou'remainlygoingtobedowntownthebusesandtrainsandtaxiscanprettyquicklymoveyouaround.Tomakeiteasywe'vepulledtogetheracompletelistofthetransportationoptionsforbusinesstravelerstoChicago.Ofcoursebusinesstravelers6alsowanttocomparepricesonrentalcarsinChicagoespeciallyiftheyneedtransportationtothesurroundingsuburbs. Chicagohasahugerangeofdiningoptions.Youcanalwaysgetsomerealcomfortfoodtherebutwhenitcomestobusinesslunchesordinnersit'snicetohavesomethingalittle7nice. Chicagoisawonderfulcityforbusinesstravelers.Hoteloptionsrangefromultra﹣fancyintowntocheapandconvenientinthesuburbs.Whileit'srelativelyeasytomovearoundChicagoit'sstillagoodideaforbusinesstravelerstoknow8theyneedtobeduringthedayandtoselectahotelnearby.Alternativelyyoucanselectahotelthat'sintheheartofthedowntownarea.
某兴趣小组在实验室用金属和酸反应来比较铝和锌的金属活动性大小他们将一块铝片和一块相同质量的锌粒分别放入相同浓度的稀硫酸和稀盐酸中发现开始时锌粒产生的气体更快对照金属活动性顺序表铝排在锌的前面应该铝更快为什么会出现这种情况呢请你一起参与以下探究． 【提出问题】除了“金属活动性溶液的质量溶质质量分数”外还有哪些因素会造成锌比铝 产生气体快 【猜想与假设】猜想1锌与铝表面的氧化物猜想2酸的种类猜想3温度 【实验探究】1按题中开始时小组同学设计的实验方案比较锌铝的金属活动性是填“合理”或“不合理”的原因是． 2请写出铝与稀盐酸反应的化学方程式． 3某同学设计如下实验方案进行实验 产生这种现象的原因是所以做金属与酸的反应实验时必要的处理是． 【实验拓展】再写一种影响铝与酸反应快慢的因素与以上题中提到的影响因素不同设计合理的实验方案并写出“实验步骤现象和结论”．．
8分Playingaviolinwiththreestrings OnNov.181995ItzhakPerlmantheviolinistcameonstagetogiveaconcert.Theaudiencesatquietlywhilehemadehiswayacrossthestagetohischairandbeganhisplay.Butthistimesomethingwentwrong.Justashefinishedthefirstfewbarsoneofthestringsonhisviolinbroke.Wethoughtthathewouldhavetostoptheconcert.25everyone'sexpectationhewaitedamomentclosedhiseyesandthensignaled26conductortobeginagain. Theorchestrabeganandheplayedwithsuchpassionandsuchpowerandsuchpurity 27theyhadneverheardbefore. Ofcourseanyoneknowsthatnoone28playaharmoniousworkwithjustthreestrings.Iknowthatandyouknowthat29thatnightItzhakPerlmanrefusedtoknowthat.Whenhefinishedtherewasanawesomesilenceintheroom.Andthenpeopleroseandcheered.HesmiledwipedthesweatfromhisbrowandthenhesaidinaquietsacredtoneYouknowsometimesitistheartist'stasktofindouthowmuchmusicyoucanstillmakewith30youhaveleft. ThispowerfullinehasstayedinmymindeversinceIheardit.Andwhoknows?Perhapsthatisthedefinitionoflife﹣notjustforartistsbutforallofus. Hehaspreparedallhislifetomakemusiconaviolinoffourstringsbutallofasuddeninthemiddleofaconcerthefindshimselfwithonlythreestringssoitiswiththreestrings 31hemakesmusicandthemusichemadethatnightwithjustthreestringswasmorememorablethananythat32makebefore.
为“探究杠杆平衡条件”小明组装了如图所示的实验装置其中的杠杆是可绕中点转轴转动的轻质细杆杆上相邻刻度线之间的距离都是相等的．图甲图乙中杠杆均处于水平平衡状态实验中所用钩码质量均相同．下列四个选项中判断正确的是
小刚在做“探究水沸腾时温度变化的特点”的实验过程中获得了下表中所示的实验数据． 1由表中的实验数据可知实验中水的沸点为℃． 2若忽略由于水蒸发引起的水质量的变化在1～5min内水的内能．选填“增大”“不变”或“减小”
2分看到照片中这位父亲不顾自己在倾盆大雨中为他的孩子撑伞网民们netizens情不自禁想起了自己的父亲.regardless.
2分毫无疑问选择学校常常能反映出父母对子女的希望.reflect.
10分 There'snothingthatwillruinyourdayfasterthanbeingstuckinatrafficjamallmorningandit'sevenworsewhenthere's41noreasonforit.There'salotofinterestingsciencebehindtrafficthoughandwhileunderstandingitmightnotmakesittinginitanybetteritcanteachyouhowtoavoidsomeofthemistakesweallmakebehindthewheel. 1.Thewaywemerge合并causesproblems Whetheryou'remergingfromtheleftortheright42aregoodthatyou'redoingitwrongandcausingallsortsofproblems.Whenmostpeopleseethattheyneedtomergetheirfirst43istodoitrightaway.Theybrakeslowdownspeedupandchangelanesinbetweenoncomingtraffic.AccordingtotheMinnesotadepartmentofTransportationthat'scompletelywrong.Sudden44causestraffictobackupaproblemthat'smadeworsebysuddenlanechangesandothercarsbrakingto45themergingtraffic. Sowhatshouldyoudo?Exactlywhatyouprobablyblamedriversfordoingwaitinguntilthelastminute.Ifyoudothattrafficwillfallintoamorenaturalpatterncalledazippermergemeaningtherearenosurprisesnosuddenbrakingandasmoothertransitionfromonelanetoanotherwhichcutsdownonbackups.Thisdoesofcourserelyonotherdriverstoletyouinatthelastminuteandbepoliteenoughnottocutyouoffwhichcausesallsortsofotherproblems. ＝2.YouarecausingthetrafficJamsyouhate Trafficjamshavelongbeenchalkedupto取决于the46oftrafficontheroadsbutitturnsoutthatevenheavytrafficcan47smoothlyifpeoplemaintaina48speed.Theproblemisthatwecan't.Researchershavefoundthatjustonepersonevenslightlysteppingontheirbrakescanhaveaterribleeffectonthetrafficaroundthem. Oneven49busyroaditcanbeonlyafewminutesfortraffictoacompletehaltbehindsomeonewho50theirbrakestoletanotherdrivermerge.Thestandstillusuallyoccursseveralminutesafterthebrakingwellafterthepersonthatcausestheprobleminthefirstplacehasgoneonhisway.
如图所示电源两端的电压U保持不变．闭合开关S1S2电流表示数为2A．闭合开关S1断开开关S2电流表示数为1.5A．已知电阻R1＝10Ω求 1电源两端的电压U． 2闭合开关S1S210s内电流通过电阻R2产生的热量Q．
2分尽管他明知暴饮暴食有害健康但他对我们要他节食的忠告却一直置若罔闻.Although.
8分PoorbearscomestotheUKbringingonlyaredhatasuitcaseasandwichandjarsofmarmalade果酱withhim.HeadingstraighttoamajorLondontrainstationhesitsonhissuitcaseandstopspassers﹣byfromtimetotimeinthehopeoffindingafreehome. ThisishowPaddingtonBearthemaincharacteroftheUKanimatedmoviePaddingtonisintroducedtoaudiences.OnMarch3duringPrinceWilliam'svisittoChinaheattendedtheChinesepremiere首演ofthefilminShanghai. ManyBritonswereraisedontalesofPaddingtonthesecond﹣best﹣knownbearinfictionafterWinniethePoohtheEconomistnoted.WhileWinniethePoohremindspeopleoftheinnocenceandsimplicityofthepastthewell﹣meaningPaddingtonalwayscauseschaoswhenhegoesthroughculturalmisunderstandings. ThemoviedescribedasatotaldelightaswarmandwelcomeasahotpairofsocksonawintermorningbytheTelegraphtellsthestoryofthebearwhoissenttoLondonbyhisfamilyafteranearthquakedestroystheirhomeinPeru.AtPaddingtonstationhemeetsMr.BrownMrs.Brownandtheirtwokids.TheBrownfamilynamehimPaddingtonbecausetheycan'tsayhisPeruvianname.Afterthefuzzy毛茸茸的strangerenterstheBrowns'homeheteacheseveryonehowtolaughandlove.IntheendMr.Brownsaysthatevenifhe'sfromadifferentspecieshe'sstillfamily. AsPhoenixmagazineputitThestoryshowsBritishsympathyandkindnessastherefugeePaddingtonisgivenanewhomeandalovingfamilyinLondon. ReleasedatatimewhenimmigrationisahottopicintheUKPaddingtonhasaveryclearmessagewelcometheotherintoyourhomethePhiladelphiaInquirernoted. AndPaddingtonBearisalsoagreatexampleofthetraditionalpolitenessthatBritishpeoplearewellknownfor.ForexamplePaddingtonBearcallspeopleMr.Mrs.andMissrarelyusingtheirfirstname.healsolovesmakingsmalltalkwithpeople.ForinstancePaddingtonoftenhaspoliteconversationsaboutunimportantthingswithpeoplelikehishousekeeper. 66.WhichofthefollowingstatementsaboutPaddingtonBearistrue? A.HeissavedbytheBrownfamilyfromanearthquakeinPeru. B.WiththehelpoftheBrownfamilyhelearnshowtolaughandlove. C.Heistraditionalandpreferstogreetstrangersusingtheirfirstname. D.AsanimmigranttotheUKheexperiencesmanyculturalmisunderstandings. 67.WhichofthefollowingwordsbestdescribethequalitiesofPaddingtonbear? A.kindandpolite B.innocentandunintelligent. C.humorousandoptimistic D.honestandstraightforward. 68.Wecaninferfromthearticlethat. A.thetalesofPaddingtonhaveremindedBritishpeopletobekindtothosewhoimmigratetotheUK B.atthetimewhenthePaddingtonstorieswerereleasedimmigrantswerenotwelcomedintheUK C.thePaddingtonstoriesonceencouragedalargenumberofGermanstogototheUK D.Paddington'sBritishhabitofmakingsmalltalkhelpedtoenrichtheGermanlanguage 69.Accordingtothelastparagraphsmalltalkprobablymeans. A.politegreetingstounfamiliarpeople B.conversationaboutunimportantthings C.conversationsaboutotherpeople'sprivatelives D.Argumentsbetweenclosefriends.
科学研究发现临界CO2流体是一种和水相似能阻燃溶解能力强的绿色环保溶剂．被誉为“绿色环保溶剂”其密度介于液体和气体之间下列关于超临界CO2流体说法错误的是
2分和外国友人进餐时带上一份小礼物是有礼貌的.manners.
10分Aisling'smotherdiedatmidsummer.Shehadfallensicksosuddenlythatsomeofthevillagerswonderedifthefairieshadcomeandtakenherforshewasstillyoungandbeautiful.Shewasburiedthreedayslaterbeneaththehawthorntree山楂树behindthehousejustastwilightwasdarkeningthesky. MaireSolanyathevillagegreenwitchcamethateveningtoperformtheoldritualsoverthegrave.Shestoodatthefootofthemoundofblacksoil.Aislingandherfatherstoodattheheadofitrestingonthesimpleheadstonewastheburningcandle.Aisling'sfatherhadlititshortlyafterElinordiedanditwouldburnallnight.ThegravestonewasaplainpieceofslatecarvedwithhernameElinor.Grassandtreerootswouldgrowuparounditastheyearspasseduntilitwouldseemasifithadalwaysbeenthere. MaireSolanyasaidinherlowclearvoiceLifetolifefrombreathtobreathwerememberElinor.Sheheldaroundloafofbreadinherhands.ShetoreoffasmallpieceandateitchewingdeliberatelybeforehandingtheloaftoAisling'sfather.Hepulledoffhisownpiecethenpassedittohisdaughter.Itwasstillwarmanditsmelledlikehermother'skitchenafterbaking.Butithadn'tcomefromhermother'shandsandthatrealizationmadealumpriseinherthroat.Thebreadwastasteless. MaireSolanyatooktheloaffromheritscrust面包皮gapingopenandplaceditonthegravestonenexttothecandle.Aislingcouldn'tshakethefeelingthathermotherhadmerelygoneoutonanerrandandwouldcomehomeatanymomentandwonderwhatthethreeofthemweredoing.Itdidn'tseempossiblethatshewasburiedthereatthefootofthehawthorntreeintheground.Itwaseasiertobelievethevillagerumorsthantositwiththeacheinsideherself. SherememberedthoserumorsnowwhileshestoodwithherfatherandMaireSolanyainatensesilence.EveryonehadalwayssaidthatElinorhadsomemagicinherandeveryoneknewthatfairies﹣iftheyexisted﹣weredrawntothat.SoAisling'sfatherhadorderedalltheoldritualseventhoughhedidnotbelieveinthemjustincase.Shewasnotentirelysurewhatsheherselfbelievedbutsheknewthathermotherwouldwantthemtodotheseritualsforherandthatwasenough. WhenthesunslippedbelowthehorizonthegreenwitchsaidSleepinpeaceElinorandscatteredagoldpowderoverthegravetobindElinortotheearth.Onthefreshlyturnedsoilthegoldglitteredlikefairlydust. 73.Aislingandherfamilyaremostlikely. A.fairliesindisquise B.simplevillagefolk C.wealthyfarmers D.experiencedbakers 74.MaireSolanyaperformedtheritualsinorderto. A.expressthankstothefairies B.protectthehawthorntree C.respectElinor'swishes D.captureElinor'sspirit 75.WhichofthefollowingdoesnotdescribeElinor? A.Abelieverinmagic.B.Practical. C.Skilledatbaking.D.Youthful. 76.WhichstatementbestdescribesAisling'sbeliefinfairies? A.Sheisuncertainandfindstheideaunsettling. B.Shefindstheideacomfortingbutisunsure. C.Sheiscertaintheyexistandwishestheywouldbringbackhermother. D.Shebelievesstronglyinthepoweroftheirritualsbutnotintheirexistence. 77.WhydidAislingfindthebreadtasteless? A.Itremindedherofhermother'sabsence. B.Itwasaterriblyrudethingtoeatathermother'sfuneral. C.Solanyawasreallyapoorbakerinthevillage. D.Therehadnotbeensufficientingredientstomakethebread.
在测量电阻Rx阻值的实验中测得通过电阻Rx的电流为0.5A此时与电阻Rx并联的电压表的示数如图所示则电压表的示数为V电阻Rx的阻值为Ω．
在探究物质的比热容的实验中小明在保温性能很好的容器中装入适量液体并用电加热器对液体加热探究液体的温度T随加热时间t变化的规律．根据记录的实验数据小明绘制了液体的温度T随加热时间t变化的图象如图所示．请根据图象判断当t＝60s时加热过程中液体始终没有沸腾液体的温度T＝℃．
8分Scriptwriterslovetocomplain.Theyaredisrespectedbyproducersregardeddispensable可有可无的bydirectorsnotdulycreditedbycriticstreatedlikeemployeesbyactors﹣althoughfewcomplainaboutbeinghistoricallyandchronicallyoverpaid.Anotherthingtheydon'tcomplainaboutistheexhaustionofnarrativethoughitweighsverymuchontheirminds.Forscriptwriterstocomplainabouttheinsufficiencyoforiginalideaswouldbelikeasalesmancomplainingaboutalackofinventory.It'snotgoodforbusiness. Writershavealwaysknowntherearealimitednumberofstorylines.Anditisincreasinglydifficulttogetoutinfrontofaviewer'sexpectations.Almosteverypossiblesubjecthasnotonlybeencoveredbutcoveredexhaustively.Howmanyhoursofserialkillerplothastheaverageviewerseen?Fifty?Ahundred?Thisbecomespainfullycleartoanywriterwhoattemptstoorallytellhisstoryscriptwriterisclosertotheoraltraditionthanitistoliterature.Originalityhasalwaysbeeninshortsupply.Doestheproliferation泛滥ofmediameanthatitishardertobeoriginaltodaythanitwas50yearsago?Wellyea.Today'sviewersliveinabiosphereofnarrative.Twenty﹣four﹣sevenmultimediaallthetime.Whenastorytellercompetesforaviewer'sattentionhenotonlycompeteswithsimultaneouslyoccurringnarrativeshecompeteswiththevariationsofhisownnarrative.That'srealcompetition.Thisexhaustionofnarrativeisbehindtheriseofrecentcounter﹣narrativeentertainmentssuchas 1.RealityTV.Anyregularviewerknowsthatrealitytelevisionfollowsitsownscriptedformulasbuttheappearanceofbeingunscriptedisessentialtoitsappeal.Wearyofsomuchpredicableplotthejadedviewerturnstoreality. 2.Anecdotalnarrative.TheattractionoffilmssuchasSlackeranditsmumblecoreprogeny呢喃类istheenjoymentofwatchingbehaviorimpededbytheartificeofplot.Itisnotfakenotdesignedalthoughofcourseitis. 3.Reenactmentdrama.Whetherbasedonfamouseventsorlesser﹣knownonesreenactmententertainmentsellsthepremisethattheseeventsactuallyhappenedandwerenotcookedupbyastaffofwritersthoughagainifnotactuallycookeduptheywereseasonedandservedbywriters. 4.Videogames.Theabilityoftheviewertoparticipateinthestorytellingprocesscreatesanillusionofnon﹣plan. 5.Mini﹣minidrama.Partoftheappealofthree﹣tofive﹣minutestoriescreatedforcellphonesYouTubeandoriginalprogrammingistheillusionofnotbeingcraftednarratives.Justbitsoflife. 6.Documentaries.Astapleoffilmedentertainmentsinceitsbeginningsdocumentarieshistoricallythepoorcousinsofcommercialcinemahavegrowninnumberandviewershipanincreaseowedinparttothedesireofviewerstolookbeyondpredictablenarratives. Storytellingbeganasceremonyandevolvedintoritual.Itwascommercializedinthemedievaltimesbecamebigbusinessinthe19thcenturyandinternationalindustryinthe20th.Thetraditionalconceptofmoviesaprojectedimageinadarkroomofviewersfeelsincreasinglyold.Narrativewillmutate变异andendure.Audio﹣visualentertainmentischangingandnarrativewillchangewithit. 74.Accordingtotheauthorscriptwritersseldomcomplainofhaving. A.beenlookeddownuponbyproducers B.sufferedtheexhaustionofnarrative C.beenconsideredunimportantbydirectors D.beenbadlytreatedbyactorsandactresses 75.Inwhichofthefollowingentertainmentformscantheviewerstakepartinitsnarrativeprocess? A.Reenactment B.Videogames C.Mini﹣minidrama D.Documentaries. 76.WhichofthefollowingstatementsisTRUEtothefact? A.Narrativebecamecommercializedinthemiddleage. B.StorytellingbecamecommercializedaftertheMiddleAges. C.Narrativebecameaworldwideindustryinthe19thcentury. D.Storytellinggrewintolargebusinessinthe20thcentury. 77.WhichofthefollowingstatementsisNOTinagreementwiththeauthor'sideas? A.Scriptwritingisnearertotheoraltraditionthanitistoliterature. B.Narrativeexhaustionisresponsiblefortheriseofanti﹣narrativeentertainment. C.Itislessdifficulttobeoriginaltodaythanitwashalfacenturyago. D.TheappearanceofbeingunscriptedisimportanttotheappealofRealityTV.
2分成本问题在我们的决定中起着很大的作用.play.
实验桌上有符合实验要求的电源其两端电压恒定开关已调零的电流表已调零的电压表滑动变阻器各一个导线若干长度L横截面积S都不完全相同的镍铬合金丝7根表面涂有绝缘漆两端绝缘漆被刮掉可接入电路但不允许将两根合金丝连接成一根使用规格如表所示合金丝的电路图符号用表示．请选用上述器材设计一个实验证明“当材料一定时导体的电阻R与其长度L成正比与横截面积S成反比即R＝k”式中k是常量．忽略温度对镍铬合金丝电阻值的影响．请画出实验电路图写出实验步骤画出实验数据记录表格．
下列典故或诗词中从物质变化的角度分析主要体现化学变化的是
10分 ChinesetraderswererecordedasmakingvoyagestothenorthcoastofAustraliafromthe1750sbutwereprobablyvisitingAustralialongbefore.ChinesemenarrivedinAustraliainsmallnumbersafterthe1788Britishsettlementasfreesettlersandcriminals.Asmallpopulationgrewrapidlyafter1848underasystemofindentured契约的labourafterChinahad1itsportstoforeigntradein1842.TheyworkedinruralNewSouthWalesascooksfarmlabourersandetc. IndenturedChinese2workedinallcoloniesvariouslyasstationhandsplantationworkersminersonpublicworkscabinetmakerspersonalservantsandinlaundries.Mostcamefromthesouth﹣easternprovincesofGuangdongandFujian. Duetolabour3inWestAustraliatheColonialGovernmentorganizedChinesecontractlabourbetween1847and1898mostworkingaslabourerscooksandgardeners.ManyChinesepeoplecamefromruralbackgroundsandbroughtwiththem4andwatermanagementskills.By1885therewere54ChinesemarketgardensinSydney.By190167%ofNewSouthWalesmarketgardenerswereChinese. GoldrushesinVictoriainthe1850sandNewSouthWalesinthe1860ssignificantly5thepopulationofChineseimmigrantsinAustraliaabout45000prospectorsarrivedinVictoriaalonein1854﹣58.Numberscontinuedtoincreaseasgoldandother6werediscoveredinQueenslandNorthernTerritoryandTasmania. Whenminingbecameless7manyChinesepeopleworkedsuccessfullytoprovidegoodsandservicessuchasfurnituremakingmarketgardeningfishingandparticularlystore﹣keepingincludingtheimportandexportofgoodsfromoverseas.Chinesegoodsespeciallyteasilkvegetablesherbsandotherspiceswerehighlysoughtafteritemsoftradebynon﹣Chinesepeople.Tearoomsimportingandsellingmanyvarietiesofteawereverypopular.Chinesesilkwasturnedinto8eveningwearandcloaksbyChinesetailorsandseamstresses. TodaythereisaculturallydiverseChinese9inAustraliawithlinkstosouth﹣easternChinaaswellasVietnamandHongKong.TheChinesecommunitiesinAustraliaarebroughttogethereveryyearby10ofLunarNewYear.
8分 ExplorationofthePoles TheNorthPoleandSouthPoleareatthetopandbottomoftheEarth1youwon'tfindanactualpoletomarktheplace.Thepolesarethenorthernmostandsouthernmostpointsontheplanet.ThepolesarethemostunfriendlyenvironmentsonEarth. Intheearly1900sexplorerscompetedtobecomethefirst2reachtheSouthPole.From1901to1904BritishnavalofficerRobertScottmadethefirstattempt.Scottgot34souththananyonehadbeenbeforebuthefailedtoreachthepole. In1909ErnestShackletonofBritainledanexpeditionacrossAntarcticaonsledspulledbydogs.Theywereonlyabout100milesabout160kilometersfromtheSouthPole5ashortageoffoodforcedthemtoturnback. ScottfinallyreachedtheSouthPoleinJanuary1912.But6disappointScottfoundthatRoaldAmundsenhadbeatenhimbyonemonth.Amundsen'sexpeditionarrivedatthepoleinDecember1911.Amundsenwas7experiencedArcticexplorerandhehadmadecarefulpreparations.Scottandhiscompanionsdiedofinjurycoldandhungerontheirreturnfromthepole. In1914Shackleton8plananotherexpeditiontotheSouthPole.Buthisshipwascrushedbyiceandhehadtocross800miles1300kilometersoffreezingseainatinyboattosurvive.Shackletonthenreturnedtosavehisstrandedmen.Itwasoneofthegreatestrescuefeatsinhistory. In1929ArcticexplorerRichardByrdbecamethefirstpersonwhoflewovertheSouthPole.Byrdlaterpioneeredtheideaof32setuppermanentstationsforscientificresearchinAntarctica.AstationcalledtheAmundsen﹣ScottBasehasstoodattheSouthPolesince1977.
推理是学习化学的重要方法但盲目类推又可能得出错误结论．以下类推正确的是
2分没有什么比看到村民依然住在缺水的环境里更令人揪心的了.upset.
实验是学习化学的灵魂下列基本实验操作中正确的是
科学家发现亚硒酸钠Na2SeO3能消除加速人体衰老的活性氧提升人体免疫力．下列有关亚硒酸钠说法正确的是
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