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下列化学符号表示两个分子的是( )
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用符号表示两个氧原子一个氢分子两个镁离子.
用化学符号表示1正一价的氢元素2两个氢原子________3两个氢气分子_________4氢氧根_
用化学符号表示⑴钠元素⑵三个磷原子⑶氩气⑷氮气⑸两个氧分子⑹2个钙离子_______
用化学符号表示1两个氮原子_____________________________________
用数字和化学符号表示⑴两个氮原子__________⑵三个硫离子__________⑶四个五氧化二氮
掌握化学用语是学好化学的基础请用化学符号表示11个镁离子2两个硫化氢分子
用化学符号表示两个氧原子_______三个水分子___________铜元素_______
用化学符号表示氮元素______________氮单质____________两个氮原子______
用化学符号表示1正一价的氢元素2两个氢原子________3两个氢气分子_________4氢氧根_
用数字和化学符号表示1木炭主要成分__________2两个五氧化二磷分子33个氢氧根离子
用化学符号表示⑴钠元素⑵三个磷原子⑶氩气⑷氮气⑸两个氧分子⑹2个钙离子_______⑺-2价的硫元素
用化学符号表示1氢元素________2两个氢原子________3两个氢气分子_________4
下列化学符号表示两个氢分子的是
2H
2H
2
2H
2H
2
O
下列化学符号表示两个氢分子的是表示两个氢原子的是
2H
H
2
2H
2
2H
2
O
用化学符号表示⑴钠元素____________⑵三个磷原子___________⑶氩气_______
用化学符号表示一个水分子两个氮原子两个氢分子n个硫酸根离子氧化镁中镁元素的化合价.
用化学符号表示1两个氧原子______2三个氢分子____3钠离子_____4碱式碳酸铜
用化学符号表示或指明符号表示的意义1一个铁原子2两个二氧化碳分子3三个镁离子4碳酸钙.
化学符号表示或写出化学符号名称1硅元素2两个氧原子3n个铁原子_________4说出符号H.的两个
用符号表示1两个亚铁离子23个硫酸分子.
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8分InItalyasmallbusinessmanowedalargesumofmoneytoaloan﹣shark高利贷者.Theloan﹣sharkwasaveryolduglyguythatfanciedthebusinessman'sbeautifuldaughter.Hedecidedtoofferthebusinessmanadealthatwouldcompletelywipeoutthedebt.Howeverthecatchwasthatthedebtwouldonlybewipedoutifhecouldmarrythedaughter. Needlesstosaythisproposalwasmetwithalookofdisgust.Solaterthecunningmoney﹣lendersuggestedlettingGoddecide.Hesaidhewouldplacetwopebblesintoabagonewhiteandoneblack.Thedaughterwouldreachintothebagandpickoutapebble.Ifitwasblackthedebtwouldbewipedbuthewouldmarryher.Ifitwaswhitethedebtwouldalsobewipedbutthedaughterneedn'tmarryhim. Standingonapebble﹣coveredpaththeloan﹣sharkbentovertopickpebbles.Whenhewaspickingthemupthedaughternoticedthathe'dpickeduptwoblackpebblesandplacedthemintothebag.Hethenaskedhertopickone. Thedaughternaturallyhadthreechoices:refusetopickapebblefromthebag;takebothpebblesoutofthebagandexposetheloan﹣sharkforcheating;pickapebblefullywellknowingitwasblackandsacrificeherselfforherfamily. Shedrewoutoneandbeforelookingatitaccidentallydroppeditontothepebble﹣coveredpathwhereitimmediatelybecamelostamongotherpebbles.Thenshesaid:Ohsorry!HowclumsyIam!ButnevermindifyoulookintothebagfortheoneleftyouwillbeabletotellwhichpebbleIpicked. Thepebbleleftwasobviouslyblackandastheloan﹣sharkdidn'twanttobeexposedhehadtoplayalongasifthepebblethedaughterdroppedwaswhiteandclearedherfather'sdebt. 1Whatcanwelearnfromthepassage A.ThegirlbelievedGodwouldcometoheraid. B.Thegirlwaswillingtosacrificeforhisfamily. C.Theloan﹣shark'sdishonestywouldbeexposed. D.Theloan﹣shark'sfirstproposaldidnotwork. 2Whichofthefollowingbestdescribesthedaughter A.Socialandobedient. B.Well﹣educatedandsharp﹣eyed. C.Charmingandquick﹣minded. D.Adventurousandgood﹣mannered. 3WhydidthegirlsayOhsorry!HowclumsyIam! A.Shewaseagertoshowasenseofhumor. B.Shewantedtoextendhersincereapology. C.Shetriestomakeupanexcuseforherdeed. D.Sheintendedtomakefunoftheman'sdishonesty. 4Whatisthemainideaofthepassage A.Theevilwillnotwinoverthevirtuous. B.Parentsshouldn'tsacrificechildrenfortheirinterest. C.Peopleshouldn'tgotoofaranddriveothersintoacorner. D.Onecanturntoone'swisdominthefaceofdifficulty.
6分KidsConnectisacampspecificallyforchildrenwithphysicalandmildintelligencedisabilitiesaged9﹣16Singleconsiderationgiventothoseovertheageof16.ItisheldinBlockhouseBayAuckland.Occasionallywerequiremeetingachildbeforecamptoensureweareabletomeettheirneedsduringthecamp.Acceptanceisnotautomaticbutatthedecisionofthecampdirector.Ourcampsareconductedbyexperiencedstaff.Wetakeeveryefforttogiveyourchildrenasafeandenjoyableweekend.Ouraimisthateverychildcomesawaywithlastingmemoriesofwhattheyhaveexperiencedexploredandenjoyedatourcamp.Wefocusonbuildingstronghealthyrelationshipswithotherchildrenwithandwithoutphysicaldisabilitiesandwithgroupleaders.Wehaveaweekendpackedfullofactivitiesactionandfun.●Teamgamesandcompetitionssongs●Cross﹣countryraceonawheelchairaccessibletrack●Motorcycling●Processdesign●Discussionsgreatfoodandloadsoffun!Thecampfeeisapproximately﹩135subjecttochange.WealsoacceptpaymentbywayofMinistryofHealthcarersupportforms.Dayvisitsandratescanbeorganizedonapersonalbasisifafullweekendstayisunsuitable.Foraregistrationformorformoreinformationpleaseemailinfo@cbm.org.nzorphone096305271KidsConnectBox8774SymondsStreetAuckland1150Website:www.cbm.org.nz1WhoisthetextmainlywrittenforA.Outdoorenthusiasts.B.Internationaltravelers.C.Teenagers.D.Parents.2WhatcanchildrendoatthecampA.Learntocook.B.Enjoyoutdooractivities.C.Practicefavoritehobbies.D.Carryoutresearchactivities.3WhatisthemainpurposeofthetextA.Toattractchildrentothecamp.B.Toexplaintheaimofthecamp.C.Totalkaboutcampingexperiences.D.Todescribetheprogramsofthecamp
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10分MovieshavedocumentedAmericaformorethanonehundredyears.SinceThomasEdisonintroducedthemoviecamerain1893amateurandprofessionalmovie﹣makershaveusedmovingpicturestotellstoriesandexplaintheworkofbusinessandgovernment.1Bypreservingthesemovieswewillsaveacenturyofhistory. Unfortunatelymoviesarenotmadetolast.2Alreadythelossesarehigh.Only20%ofUSfeaturefilmsfromthe1910sto1920ssurvive.OftheAmericanfeaturesproducedbefore1950abouthalfexist.Forindependentlyproducedworkswehavenowayofknowinghowmuchhasbeenlost. Formanylibrariesandmuseumsthehardeststepinpreservingmoviecollectionsisgettingstarted.TheMoviePreservationGuideisdesignedfortheseorganizations.3Theseinstitutionshavecollectionsofmovingpicturesbutlackinformationabouthowtotakecareofthem.Theguidecontainsbasicfactsforbeginners﹣professionalstrainedinhistorybutunschooledinthistechnicalarea. TheguidegrewfromuserworkshopsatDukeUniversity.Atthesessionsbeginnerstalkedwithtechnicalexpertsaboutwhattheyneededtoknowtopreserveandmakeavailabletheirmoviecollections.4 Followingtheadvicetheguidedescribesmethodsforhandlingandstoringmovingpicturesthatarepracticalforresearchinstitutionswithlimitedresources.5TheguidehasbeentranslatedintoChineseJapaneseandKorean. A.Keepitsimple!wastheadviceofthediscussions. B.They'llbedamagedwithinyearsifnotproperlystored. C.TheseorganizationsarethefirsttosaveAmericanmovies. D.Itisorganizedinchaptersandincludescasestudiesandcharts. E.Itintroducesmoviepreservationtononprofitandpublicinstitutions. F.TheyshowhowgenerationsofAmericanshavelivedworkedanddreamed. G.Theystoretheoriginalmoviesandnewonesundercool﹣and﹣dryconditions.
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8分PinewoodStudiosislocated位于abouttwentymileswestofcentralLondonandnamedafterthepinetreesinthegrounds.PinewoodhasbeenattheheartofbothBritishandinternationalfilmproduction.ThehouseHeatherdenHallwasboughtbyCharlesBootin1934andheandJ.ArthurRankbecamepartnersintheprojecttobuildthestudios.PinewoodprovedpioneeringinitsuseoftheunitsystemthatallowedmorethanonefilmtobemadeatatimeandthisenabledPinewoodtoachievethehighestoutputofallthestudiosintheworld.ThefirstfilmtobecompletedatPinewoodwasTalkoftheDevil1936ReedwhiletheimmediatepostwarperiodsawsixmajorproductionsincludingthepraisedOliverTwist1948LeanandTheRedShoes1948PowellandPress﹣burger.The1950ssawcountlessproductionsincludingtheDoctorseriesandmedicalcomedywhichwerethefatherstotheCarryOnfilms:theseriesstartedwithDoctorintheHouse1954Thomasandledtoafurthersixfilms.Othernotablefilmsofthe1950sageincludeThePrinceandtheShowgirl1957OlivierstarringMarilynMonroeCarveHerNamewithPride1958GilbertNorthWestFrontier1959ThompsonandTheThirty﹣NineSteps1959Thomas.TheThirty﹣NineStepswasareworkingofJohnBuchan'snoveloriginallyfilmedbyHitchcockin1935.BecauseofitsnewideasandskillsAmericanproductioncompaniescrowdedtoPinewoodandamajorreinvestment再投资wasrequired.Duringthe1960sfournewstageswerebuilttoaccommodateeveryaspectoffilmandtelevisionproduction.ThisperiodalsosawthestartoftheassociationbetweenPinewoodandtheJamesBondserieswhichstartedin1962withDrNoYoung.ThestudioshavecontinuedtoproduceimaginativeandtechnicallychallengingmaterialsuchasSuperman1978DonnerSupermanⅡ1980LesterSupermanⅢ1983LesterSupermanⅣ:TheQuestforPeace1987FurieandBatman1989Burton.1HowlongisthehistoryofPinewoodStudios'firstfilmA.About60years.B.About70years.C.Morethan80years.D.Morethan100years.2WhatmadePinewoodStudiosproducemostA.Itsfamousactorsandactresses.B.Puttingtheunitsystemintouse.C.Itsproperlocationandtranslation.D.Theseriousattitudeofitsleaders3WhichfilmwascompletedduringtheearlypostwarperiodA.TheRedShoes.B.TheQuestforPeace.C.TheThirty﹣NineSteps.D.ThePrinceandtheShowgirl.4WhatisthepassagemainlyaboutA.TheupsanddownsofPinewoodStudios.B.ThebestfilmsmadebyPinewoodStudios.C.ThelocationandcharactersofpinewoodStudios.D.ThehistoryandachievementsofPinewoodStudios.
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8分Toomuchsalt﹣﹣﹣andnotenoughwholegrainsfruitsandvegetables﹣﹣﹣maybeshavingyearsoffourlivesanewanalysissuggests.InastudypublishedWednesdayintheLancetresearcherslookedatpeople'seatinghabitsacross195countriestoestimatehowmuchpoordietscontributetomortality.Theirfindings11millionpeopledieeachyeararoundtheworlddueatleastinparttocertainfoodsaccordingtothestudy.LeadauthorAshkanAfshinanepidemiologist流行病学家attheUniversityofWashingtonsaidtheresearchersestimatedthatoverallpoordietsareresponsibleformoredeathsaroundtheworldthananyotherriskfactorincludingcigarettesmokingknowntobeoneofthegreatestthreatstopublichealth.Theproblemhesaidisnotonlywhatpeopleareeatingbutalsowhatthey'renoteating.Thestudyestimatedthatglobally3milliondeathswereattributedtotoomuchsodium﹣﹣﹣butanother3milliondeathswereattributedtotoolittlewholegrainsandanother2milliondeathstotoolittlefruit.Expertssayitconfirmswhathealthprofessionalshavebeenteachingforyears﹣﹣﹣abalanceddietisimportantforalonghealthylife.AfshinsaidIsraelwherepeopleeataMediterraneandiet﹣﹣﹣highintakeoffruitsvegetablesnutsandhealthyoilssuchasoliveoil﹣﹣﹣rankedNo.1intermsoftheleastnumberofdiet﹣relateddeaths.FranceandSpainrankedsecondandthird.UzbekistanaformerSovietrepublicwhererefinedcarbohydratessuchasbreadandpastaarestaplesscoredtheworst.BruceLeeassociateprofessorofinternationalhealthsaiddietcancontributetononcommunicablediseaseNCDsviaobesityhighbloodpressureandconditionsthatleadtohighbloodsugarlevelsaddingthatoneproblemisthatunhealthyfoodssuchasthosethatarehighlyprocessedwithartificialingredientsareoftencheapertomakestoreandprepare.Thereforesuchfoodshavereplacedmorenaturalandhealthyfoodsinfoodsystemsaroundtheworld.ButisapoordietreallyresponsibleformoredeathsthanevencigarettesmokingNestlewithNewYorkUniversitysuggestedthatitmakesensethatdietaryrisksarehigherbecauseeveryoneeatsbutnoteveryonesmokes.Soshesaidthatdietisariskfactorforeverybody.1AllofthefollowingmayhaveabadeffectonourhealthEXCEPT.A.HighintakeofsodiumB.ArtificialingredientsC.RefinedcarbohydratesD.Nutsandoliveoil2Fromthepassagewecanknowthat.A.11millionpeopledieeachyearduetofoodproblemsB.diet﹣relateddeathshavealreadybecomeaglobalconcernC.dietaryrisksarehigherthanthosefromcigarettesmokingD.highlyprocessedfoodshavereplacednaturalandhealthyfoods3WhatdoestheunderlinedwordmortalityinParagraph2probablymeanA.Disease.B.Risk.C.Death.D.Threat.4WhatisthebesttitleforthepassageA.BaddietskillmorepeoplethansmokingB.WearewhatweeatC.MorefruitsandvegetablesfewerdeathsD.Abalanceddietmatters
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8分Youarechattingwithfriendsonthephonebutyoucan'thelpbrowsingashoppingwebsiteinthemeantime.You'reeatinglunchaloneinthecanteenbutitonlyfeelsrightwhenyoustartplayingashowonyourphone﹣asifit'sanecessarysidedish. Wenowliveinaworldthatbombardsuswithinformation.Itseemsunnaturaltodoonlyonethingatatime.It'sasifwe'reallsufferingfromwhatarecentQdailyarticlecalledmultitaskingOCD多任务强迫症. Withnewsreducedto140charactersandcommunicationincreasinglymadebyemojis表情符号wehavedevelopedtheabilitytofocusourattentiononseveralactivitiesanddevicesatthesametime.SabyOtmanifounderofthewebsitePulpixoncewroteWeneedlotsofstimuli刺激元素tokeepusinterestedandtofightoffboredom. Butperhapsfightingoffboredomisnottheonlyreason.Myownobsessionwithmultitaskingmainlycomesfromthefactthateveryonearoundmeseemstobeconstantlystudying.Eachminutewithoutnewinformationfeelslikeawasteoftime.SoIalwayshavemyheadphonesonwhetherI‘mcommutingexercisingorwalkinginthepark.I‘mforeverlisteningtosomething﹣acourseonclassicalmusicoronnewmediamanagementandheavenknowswhatelse﹣justsoIcankeepupwiththeworld. Peoplewhocan'tstayawayfromsocialmediaareknownasFOMOfearofmissingout.Theyhavetobeconstantlyupdatedaboutwhattheirfriendsaredoingandsaying.ButI'dguessthatFOFObetterdescribesme﹣fearoffallingout.Nomatterwhatyourreasonmultitaskingisapartofmodernlife.Doyourbesttomakethemostoutofit. 1Withtheexamplesinthefirstparagraphtheauthorintendsto. A.explainwhatmultitaskingOCDislike B.showhowbusytoday'slifeis C.showthatpeopletodayoftenfeellost D.showpeopleliketobefashionable 2WhydopeoplelikemultitaskingaccordingtoOtmani A.Theylackthepatiencetofinishonethingatatime. B.Itcanhelpthemtocommunicatetheirideas. C.Theyaremoreablethanthepastgeneration. D.Itcanpreventthemfrombeingbored. 3Theunderlinedwordobsessionisclosestinmeaningto. A.interest B.knowledge C.understanding D.worry 4WhyisthewritercrazyaboutmultitaskingShe. A.wantstostayaheadofherfriends B.wantstohavesomethingtoshowoff C.doesn'twanttogetleftbehindbyothers D.thinksitisboringtodoonethingatatime
—Let'sgocampinginthemountainOK? —.I'dliketobreathethefreshair. A.Nevermind B.Notatall C.Soundsgreat D.I'mafraidnot
30分OnNovember181995ItzhakPerlmantheviolinistcameonstagetogiveaconcert.Gettingonstageis1smallachievementforhim.Hewas2withpolio小儿麻痹症asachildsohewalkedwiththe3oftwocrutches拐杖. The4satquietlywhilehe5hiswayacrossthestagetohischairandbeganhisplay.Butthistimesomethingwentwrong.Justashefinishedthefirstfewbarsoneofthestringsonhisviolin6.Wethoughthewouldhavetostopthe7.Buthedidn't.8hewaitedamomentclosedhiseyesandthen9theconductortobeginagain. Theorchestrabeganandheplayedwithsuchpassion10theyhadneverheardbefore. Ofcourseanyoneknowsthatitis11toplayaharmoniousworkwithjustthreestrings.Butthatnighthe12toknowthat.Whenhefinishedtherewasanawesome13intheroom.Andthenpeopleroseand14.Therewasanextraordinaryoutburstof15fromeverycornerofthehall.HesmiledandthensaidYouknowsometimesitistheartist'stasktofindouthowmuch16youcanstillmakewithwhatyouhaveleft. Thispowerfullinehas17inmymindeversince.Perhapsthisisthe18oflife﹣notjustforartistsbutforallofus.Soourtaskinthisfast﹣changingworldistomakemusic19withallthatwehaveandthen20thereisnolongerpossibletomakemusicwithwhatwehaveleft. 1A.almost B.much C.no D.too 2A.shocked B.struggled C.suffered D.hit 3A.aid B.direction C.guide D.instruction 4A.team B.conductor C.parent D.audience 5A.made B.worked C.lost D.found 6A.twisted B.broke C.bent D.lost 7A.piece B.career C.tour D.concert 8A.Therefore B.Anyhow C.Instead D.Moreover 9A.ordered B.signaled C.waved D.told 10A.as B.that C.which D.what 11A.impossible B.probable C.hopeless D.improper 12A.tried B.agreed C.decided D.refused 13A.sound B.horror C.silence D.interest 14A.cried B.shouted C.jumped D.cheered 15A.laughter B.applause C.tears D.scream 16A.money B.difference C.music D.fame 17A.stayed B.kept C.planted D.wondered 18A.secret B.definition C.sense D.purpose 19A.aboveall B.atlength C.atlast D.atfirst 20A.while B.where C.when D.whether
10分文中共有10处错误每句中最多有两处.错误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.Timeflew!It'sapitybecauseyouaregoingbackhomesoon.I'mwritingtoexpressmycongratulationsandgratitudetoyouandinviteyoutoparticipateinthefarewellparty.Tobeginwithcongratulateyouontheprogressesyou'vemadeinChineseduringthisterm!Seenyoureffortspayoffwereallyfeelhappyforyou.MoreoverwemustthankyouforhelpingustoourEnglish.It'sverykindofyoutoanswerourcountlessquestionspatient.Wecouldn'thavemadesogreatprogresswithoutyourhelp.Lastbutnotleastwe'veplannedafarewellpartyforyou.Itwillheldonthethirdfloorofthedininghallstartingat6pmonthisFriday.Itisanopportunitytoenjoyourselvesandhaveabetterunderstandingofeachother.Webothhopeyoucancome!Lookingforwardtoseeingyousoon.
试判断下列各种情况中小灯泡L1和L2的连接情况.流过L1的电流全部流经L2
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