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许多化学知识可以解决生活中的实际问题，请按要求填空． （1）由于水质原因，水壶用久后，会沉积水垢，水垢的主要成分是碳酸钙和氢氧化镁，其中碳酸钙的化学式为 ．写出用盐酸除去水垢的一个化学方程式 ...
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学习化学能使我们更好地认识生活中的有关现象更合理地解决实际问题根据所学化学知识填空1泡茶时能闻到茶香
学习了物理知识后可以帮助我们解决许多生活中的实际问题例如家中买煤时我们最应该关心煤的
热量
比热容
热值
密度
生活中蕴含着许多化学知识请按照要求填空:1小李去医院体检医生说他有点贫血你认为他应该适当补充____
教学评价关注的是学员在具体的教学情境中主动地知识发展自己 探究知识的能力和思维技能以及运用知识解决工
收获
复述
建构
记忆
应用传热学知识可解决哪些工程实际问题
化学课程的总目标是
提高学生的科学素养
使学生掌握化学基础知识和基本技能
提高学生分析问题和解决问题的能力
培养学生运用化学解决实际问题的能力
学好化学可以帮助我们解决许多生产生活中的实际问题现请你叙述如何用化学方法除去铜粉中混有的少量锌粉．
义务教育化学课程标准2011年版指出化学与社会生活实际有着广泛而紧密的联系化学教材的编写应突出这一特
化学源于生活生活中蕴含着许多化学知识请按照要求完成填空1空气中可供人类呼吸的气体是用化学式填空2大米
当前要注重理顺收入分配关系维护和实现社会公平注重完善社会保障体系注重做好关心困难群众生产生活的工作各
解决实际问题的政策意见和要求
解决实际问题的具体对策措施
解决实际问题的一种指导思想
解决实际问题的工作重点提示
智力是人们认识客观事物并运用知识解决实际问题的能力
数列是高中数学必修5的内容普通高中数学课程标准实验要求学生能通过对日常生活中大量实际问题的分析建立
当前要注重理顺收入分配关系维护和实现社会公平注重完善社会保障体系注重做好关心困难群众生产生活的工作各
解决实际问题的政策意见和要求
解决实际问题的具体对策措施
解决实际问题的一种指导思想
解决实际问题的工作重点提示
数列是高中数学必修5的内容普通高中数学课程标准实验要求学生能通过对日常生活中大量实际问题的分析建立等
生活中蕴含着许多化学知识．请按照要求填空 生活中常用的方法降低水的硬度同时又可以杀菌消毒．
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10分AmazingChinaisa90﹣minutedocumentaryaboutthedevelopmentofChina.Manypeoplehavewatchedit.Weaskedsomestudentshowtheylikedthismovie.Herearetheiropinions. ▲ThedirectorWeiTiemadethissuccessfulmovie.ItshowsthatChinahasprogressedrapidlyinthepastnearly70years. ﹣﹣LiLin ▲Thismoviedrewapictureofcommonpeople'sgreatwork.I'mproudofourcountrybecausealltheChinesetrytoachieveChinesedream. ﹣﹣XuWei ▲Inthisdocumentarywesawthelongestsea﹣crossingbridgeintheworldHongKong﹣Zhuhai﹣MacaoBridge.NowChinaalsohaslongerhigh﹣speedrailnetwork高铁网thananyothercountry. ﹣﹣LiuYang ▲ThefilmhelpedpeopletoknowChinabetter.Thestoriesinthemovietouchedmyheartdeeply.FromthenonIdecidedtoworkharderthanbefore. ﹣﹣HuangLei 1WhatkindofmovieisAmazingChina 2Whoisthedirectorofthismovie 3WhyisXuWeiproudofChina 4Whichisthelongestsea﹣crossingbridgeintheworld 5DidAmazingChinatouchHuangLei'sheart
1分SantaishanForestParkisbeautifulthatithasbecomeahottouristattraction. A.so B.very C.such D.quite
1分Accordingtothenoticeguestsatthishotelusethesportscenteratnoextracost. A.can B.should C.must D.need
20分假如下面是你们班教室里的照片墙墙上记录了中考前学习和生活的点点滴滴以及考前老师的温馨提示.忘不了备战中考时充实而快乐的时光请你以PreparationforHighSchoolEntranceExam备战中考为题写一篇80﹣100词的短文. 要求1请阐述图中信息可适当发挥 2文中不得出现真实的人名校名和地名 3字迹工整语言流畅表达正确. PreparationforHighSchoolEntranceExam
甲数是乙数的1.5倍则甲数和乙数的比是．如果甲数是18那么乙数是．
判断下列各题中的两个量是否成比例关系．若成成什么比例关系 1每小时加工零件数一定加工时间和加工零件总数． 2从甲地去乙地已行的路程和未行的路程． 3圆的直径和周长． 4已知＝xy≠0x和y．
1分StorySignisausefulappitcanmakeiteasierfordeafchildrenandtheirparentstoreadbedtimestories. A.so…that B.such…that C.too…to D.as…as
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一个足球的表面是由32块黑色白色的皮块缝接而成的黑色白色皮块的数量之比是35．黑色白色皮块各有多少块
1分It'sreportedthemedalsforthe2020OlympicGamesinTokyofrom100%recycledmaterial. A.aremaking B.havemade C.ismade D.willbemade
1分﹣ExcusemeI'mafraidwe′relost.Couldyoutellus ﹣Sure.Goalongthestreetforabout15minutesandthenyou'llseeit. A.howcanIgettoWandaShoppingMall B.whereWandaShoppingMallis C.howfarisWandaShoppingMall D.whereisWandaShoppingMall
8分ThenAlicesawasmallglasstable.Therewasalittlegoldenkeyonit.Shepickeditupandputitallthelocksonthedoorsbutitdidn'topenanyofthem.Shemovedacurtainononeofthewallsanddiscoveredanotherdooraverysmallone.Sheputthekeyinthelock.Itwasexactlytherightsize!Sheopenedthedoorandlookedthroughit.Attheendofalowpassageshesawabeautifulgarden.Itwasfullofbrightlycolouredflowersandfountains. Ohhowbeautiful!shesaid.I'dlovetogotherebutI'mtoobigtogetthroughthedoor. Shewalkedbacktothetable.Therewasabottleonitnow. I'msurethatbottlewasn'ttherebeforeshesaidalittleconfused. Sheputdownthekeyandpickedupthebottle.ShereadthewordsDRINKMEonit.Alicewasn'tastupidgirl.Shedidn'tdrinkitimmediately.Firstshelookedatthebottlecarefully.Therewasn'talabelonitthatsaidPOISON. Sosheputthebottletoherlipsanddrank. Mmmit'sniceshesaid.Ittastedlikecherrytartpineappleroastturkeyandtoast﹣allthethingsthatshelikedtoeat﹣soshedranksomemore.Andsomemore.Soonthebottlewasempty. Whatacuriousfeelingshesaid.I'mgettingsmallerandsmaller.Itwastrue!ShewasnowassmallashercatDinah. Good!Icangothroughthedoorintothegardenshesaid.ButpoorAlice!Whenshegottothedoorshedidn'thavethekey!Itwasonthetable.Shecouldn'treachitbecauseshewastoosmallnow.Shesatdownandcried. AfterawhileshesaidAlice!Stopcrying.Cryingdoesn'thelp.Dryyourtearsimmediately! Whenshelookedatthetableagainshesawasmallglassboxunderit.Shepickeditupandopenedit.Therewasasmallcakeinside.IthadthewordsEATMEonit.Sheputasmallpieceofitinhermouth. IfIgrowbiggerIcanreachthekeyshethought.AndifIgrowsmallerIcangounderthedoor. Butnothinghappenedsoshefinishedit. 1Fromthepassagewecanknowthat. A.atfirstAlicecouldgothroughthedoorintothegardeneasily B.thenAlicefoundtherewasalittlegoldenkeyonasmallwoodentable C.AlicewasassmallasherrabbitDinahaftershedranksomethinginthebottle D.Alicesawasmallglassboxwithasmallcakeinitunderthetable 2Alicedidthefollowingthingsintheorderof. a.Shesawabeautifulgardenattheendofalowpassage. b.Shemovedacurtainanddiscoveredanotherdoor. c.Sheputasmallpieceofthecakeinhermouth. d.Sheputthebottletoherlipsanddrank. e.Shecriedbecauseshecouldn'treachthekey. A.a﹣b﹣c﹣d﹣eB.b﹣a﹣d﹣e﹣cC.d﹣a﹣b﹣e﹣cD.b﹣d﹣e﹣a﹣c 3Theunderlinedworditinthelastparagraphrefersto. A.thesmallbox B.theglasstable C.thesmallcake D.thegoldenkey 4AccordingtothepassagethebestwordstodescribeAliceare. A.carefulandbrave B.curiousandhelpful C.cleverandfriendly D.organizedandstrange
1分BeijingExpo2019openedtothepublic29thApril.Itwilllastoverfivemonths. A.at B.in C.on D.of
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5分EveryyearinearlyOctoberAlbuquerqueInternationalBalloonFestivalis1hinAlbuquerquethebiggestcityinNewMexico.Becauseofthegreatnumberofballoonsitistheworld's2lballooningevent.Formorethan30yearsguestsfromallovertheworldcometoAlbuquerqueinOctobertocelebrateballooning.In2018over900000people3athisevent.Therewereover500balloonsintheeventwithover1000pilots.When4hofcolorfulballoonsflewuphightheskyofAlbuquerquebecameamovingcartoon.Itwasfullofcolorsandspecialcharacters.Itwasatimewhen5dcametrueandromancefilledthesky.Grown﹣upsandchildrenwereamazedandjoyfulduringtheballoonfestival.
15分Azero﹣wastelifeisalifestylethathardlycreatesanyrubbish.Soazero﹣wastethemestoreisabout1peoplewithanumberofeverydaypracticalandpleasantzero﹣wasteproductstohelpthemstartonaone﹣stopzero﹣wastelifejourney. Zerowasteordanshariwasfirst2byaFrenchwomanBeaJohnson.Livealifeandtrynottocreateanyrubbishusedifferentmethodstoprotecttheearth.shesaid. YuYuan27is3attractedbythisidea. SheandherboyfriendhavelivedinBeijingformanyyears.Andearliersheusedtobeacustomerwithoutthinkingalot4shesawavideoaboutzerowaste. The5isaboutafamilyoffourandtherubbishtheyproduceeveryyearisplacedinajar. AfterwatchingthevideoYuwantedto6thiszero﹣wastelifestylewithherboyfriend. Yusaysthatazero﹣wastelife7the6Rprinciple﹣﹣RefuseReduceReuseRepairRecycleandRot腐烂. OverAugust﹣OctoberwhenYufollowedtheprincipleofzerowaste6RsheandherboyfriendJoeHarveyboth8onlytwocansofrubbish. Nowthecouplehaveopenedasmall9calledTheBulkHouseinNanluoguxiangBeijingtosupportazero﹣wastelife. Atthestoretheyuseenvironmentallyfriendlyproducts.Forexampletheyusewoodproductsto replace10onesandprepareclothbagsprintedwithzero﹣wastelogosforcustomers.Mostoftheproductssoldinthestorecanbereusedandasmallnumberof11whicharenotrecyclablecanegrade分解.Thestore12hassecondhandbooksandaudio﹣visualCD/DVDs. Forusedtoiletriesthingslikesoapandtoothpastethatareusedforcleaningyourselfthereiscompanywhichacceptsthemandthecoupleregularlymailstheirwastetoit. Yusaysthatthosewhowereoncenot13inthezero﹣wastelifestylehavegraduallychangedbecauseofcuriosity.Thezero﹣wastelifestylesheaddsisforeveryone. It's14usatourfingertips.Yuexpectssomeofherfriendsto15herontheroadtozerowaste.Asthesayinggoesmanyhandsmakelightwork. 1A.offering B.providing C.giving D.affording 2A.invented B.found C.discovered D.suggested 3A.hardly B.luckily C.clearly D.deeply 4A.unless B.until C.after D.when 5A.video B.film C.article D.newspaper 6A.experience B.change C.represent D.spend 7A.accepts B.receives C.follows D.believes 8A.saved B.produced C.kept D.wasted 9A.shop B.factory C.hotel D.company 10A.paper B.cloth C.silk D.plastic 11A.it B.them C.their D.its 12A.too B.either C.also D.only 13A.proud B.worried C.amazed D.interested 14A.behind B.around C.ahead D.above 15A.organize B.record C.join D.encourage
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25分减负之后同学们有了更多的课余时间.某校英语角就如何让课余生活更有意义展开了讨论大家各抒己见.请你根据如图提示以HowToMakeOurSpareTimeMoreMeaningful为题用英语写一篇短文. 注意1短文应包括所给内容要点可适当发挥使文章连贯 2词数90左右短文开头已给出不计入总词数 3短文中不得出现考生的真实姓名校名等信息. 4参考词汇提升素养promoteliteracy HowTomakeOurSpareTimeMoreMeaningful Nowadayswestudentshavemuchmoresparetimethaneverbeforebuthowtomakeourspare timemoremeaningful.
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解比例 2x＝1.21.8 x＝ ＝
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