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用化学用语填空． （1）纯碱 ． （2）2个氧气分子 ．
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用化学用语填空1酒精溶液中的溶质__________________2氧化铝中铝元素的化合价____
用适当的化学用语填空1两个铁离子2氧化钠3纯碱4含氯元素的氮肥.
用化学用语填空12个氢原子23个镁离子
用化学用语填空1酒精溶液中的溶质_____________2氧化铝中铝元素的化合价______3保持
5分用化学用语填空:1氦气________2硫的+6价氧化物____________32个铁离子__
用化学用语填空.1氢离子.22个氧气分子.3磷元素.4二氧化氮.
用适当的化学用语填空1两个亚铁离子23个氧化钠分子3纯碱4含氯元素的氮肥.
用化学用语填空12个铅原子23个氧气分子34个硫酸根离子4氧化钙中钙元素显+2价
用化学用语填空12个氮原子__________2地壳中含量最多的金属元素__________
用化学用语填空12个氧分子2常用于改良酸性土壤的碱.
用化学用语填空2个氢原子________;纯碱中的阴离子________氧化镁中镁元素的化合价___
化学用语是学习化学的主要工具按要求用化学用语填空1钙元素22个氮原子3过氧化氢分解产生氧气
1用化学用语填空①2个氧原子②钙离子③+2价的镁元素④1个氮分子.2写出下列反应的化学方程式①氢气在
1化学用语是学习和研究化学的工具请用化学用语填空①＋2价镁元素___________②2个亚铁离子_
请用化学用语填空1镁离子________23个二氧化碳分子________3纯碱________
填空1用化学用语填空①2个氧原子②钙离子③+2价的镁元素④1个氮分子2写出下列反应的化学方程式①氢气
用化学用语填空.1两个氮分子2氧气中氧元素的化合价23氯离子的结构示意图为.
用化学用语填空①2个氮分子__________②m个铝离子__________③硫酸铁_______
请按照要求用化学用语填空11个氖原子____________22个钙离子__________3天然气
用化学用语填空.12个氯原子__________23个镁离子__________.
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Feelingbothpositiveandnegativeemotionsisanaturalpartofbeinghuman.Wemightusetheword'negative'todescribemoredifficultemotionsbutitdoesn'tmeanthoseemotionsarebadorweshouldn'thavethem.Stillmostpeoplewouldprobablyratherfeelapositiveemotionthananegativeone.1.Whatmattersishowouremotionsarebalanced﹣howmuchofeachtypeofemotionpositiveornegativeweexperience.Negativeemotionswarnusofthreatsorchallengesthatwemayneedtodealwith.Forexamplefearcanalertustopossibledanger.2.Angryfeelingswarnusthatsomeoneissteppingonourtoescrossingaboundaryorviolatingourtrust.Angercanbeasignalthatwemightneedtoactonourownbehalf.Negativeemotionsfocusourawareness.3.Buttoomanynegativeemotionscanmakeusfeelanxiousexhaustedorstressedout.Whennegativeemotionsareoutofbalanceproblemsmightseemtoobigtohandle.Positiveemotionsbalanceoutnegativeonesbuttheyhaveotherpowerfulbenefitstoo.Insteadofnarrowingourfocuslikenegativeemotionsdopositiveemotionsaffectourbrainsinwaysthatincreaseourawarenessattentionandmemory.Theyhelpustakeinmoreinformationandholdseveralideasinmindatonce.4.Whenpositiveemotionsopenusuptonewpossibilitieswearemoreabletolearnandbuildonourskills.5.A.Whathelpsyoufeelconfident?B.Thatleadstodoingbetterontasksandtests.C.It'sasignalthatwemightneedtoprotectourselves.D.Theyhelpusfocusonaproblemsowecandealwithit.E.Forexampleit'slikelyyou'dprefertofeelhappyinsteadofsad.F.Andtheythenmakeusunderstandhowdifferentideasrelatetoeachother.G.Payattentiontothesepowerfultoolsandfindwaystomaketimeforthem.
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小代家新买了储水式电热水器其工作原理图如图．使用前小代仔细阅读说明书知道电热水器的两根加热管电阻相同功率有高中低三档．当S1断开S2接b时其功率为低档大小为1000W． 1请指出电热水器的高中档功率分别是多少瓦． 2小代选用某档加热水箱里的50L水水温升高40℃用了40min求此过程电热水器的效率．水的比热容c＝4.2×103J/kg•℃
ItisrecommendedthatoneoftheeffectivewaystomakeyourEnglishwritingskillsimprovedshouldbekeepingadiary.1comparewithotherformsofwritingittakes2littletimeaswellasbeingshorter.Itis3universerecognizedthatyouwillgettolearnhowtoexpressyourselfinEnglishifyouinsistonpractising.Apparentlyyoumaymeetwithagoodmany4difficultattimes.Thetroubleisthatyoucannotfindappropriatewordsandphrasestogiveexpressiontoyourmind.InadditiontherearelotsofidiomaticwaysofChineseappearinginyourdiary.5mypointofviewapieceofgoodadviceisthatthereshouldbenootherwaymoresuitablethan6keepanotebookandanEnglishdictionary7easyreach.Wheneversomething8beatyouput9downandthenconsultthedictionary.CertainlyyoucangethelpfromyourEnglishteacherifnecessary.I'msureitisofgreatusetokeepadiaryinEnglishforthe10improveofwritingabilities.
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假设你是李华请你以自己网上购书所遇到的不愉快经历向中国某家英文报纸生活栏目写一封抱怨信.要点如下 1.所购书中有破损缺页现象 2.一些书籍价格比实体书店还要贵 注意 1.词数100左右 2.可适当增加细节以使行文连贯 3.开头语和结尾已给出不计入总词数. DearSirorMadame Iamamiddleschoolstudent.Iamwritingtoexpressmydissatisfactionanddisappointmentabouttheunpleasantexperience﹣﹣﹣﹣ Iwouldbegratefulifyoucouldtakemyopinionintoconsideration. Yourssincerely LiHua
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TheKing'sSchoolCanterburyisanindependentcoeducationalsecondaryschool.Therearecurrently791pupilsontheschoolroll名单.TheschoolhasalonganddistinguishedhistoryanditisalsooneoftheoldestcharitiesinthecountryprovidingscholarshipstopupilsandorganizingaCharityoftheTerm. Thecurriculum课程atKing'sisbasedonstrongacademicroots.Itemphasizesandreliesuponwhatisbestintraditionalindependentschooleducationscholarlyexcellencesupportedbyacaringandtutorialsystemandawide﹣rangingcurricularprogramme.Howeveritiscontinuallyadaptingandreactingtothechangingdemandsofmoderneducationnewsubjectsareaddednewteachingtechniquesareadoptedandthereisanincreasingawarenessoftheneedtoprovideprogrammesofstudythatmatchindividualneedsandskills. ThecurriculumisdividedintothreeunitstheLowerSchoolYear9anintroductoryyeartheMiddleSchoolYears10and11workingtoGCSEsandtheSixthFormYears12and13takingASandAlevels. FulldetailscanbefoundinShellGuideandHandbookMiddleSchoolAcademicGuide2009﹣2011MiddleSchoolAcademicGuide2010﹣2012SixthFormGuide2009﹣2011andSixthFormGuide2010﹣2012. Formalandstructurededucationalsupportforthosewhoneeditisavailableatalllevels.Thewell﹣stockedlibraryisopen7daysand6eveningsperweek.ICTfacilitiesincludingtheInternetareavailableforallandthewholeschoolstudieswithinthehousesaswellasclassroomsisextensivelynetworked. PupilsareofferedextensivecareeradvicethroughouttheirtimeatKing's.Almostallgotouniversityeitherimmediatelyorfollowingagapyear.ThemostpopularuniversitydestinationsareCambridgeBristolNottinghamDurhamLeedsOxfordEdinburghManchesterandUniversityCollegeLondon. DirectorofStudiesGeoffCocksworthgrc@kingsschool.co.uk ExaminationsOfficerElaineMcDowelleam@kingsschool.co.uk. IfyouneedformoreinformationClickhere. 1Thepassageismainlyabout. A.theachievementsofTheKing'sSchoolCanterbury B.thecurriculumatKing's C.thenewteachingtechniquesatKing's D.theintroductionofTheKing'sSchoolCanterbury 2WhichofthefollowingisNOTtrueaccordingtothepassage? A.TheKing'sSchoolCanterburyisafamoushighschoolinBritain. B.ThecurriculumatKing'sisbestintraditionalandmoderneducation. C.Allpupilsoftheschoolgotouniversityimmediatelyaftertheygraduate. D.Pupils'dormitoriesaswellasclassroomsareprovidedwithnetwork. 3ThefollowingcanbeinferredfromthepassageEXCEPTthat. A.theKing'sSchoolfocusesonpupils'individualdevelopment B.pupilsintheKing'sSchoolwhopassGCSEswillgotouniversity C.pupilsintheKing'sSchoolhaveaneasyaccesstotheschoollibrary D.pupilsintheKing'sSchoolreceivegoodeducation 4Thepassageisprobablytakenfroma. A.handbook B.web C.magazine D.newspaper
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