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用化学符号表示． 保持氮气化学性质的最小粒子 ；
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我能写出下列化学符号①2个氯离子②保持氮气化学性质的最小粒子③8个二氧化氮分子④5个氢氧根离子⑤硫酸
用化学符号表示12个亚铁离子2氧化铝中铝元素显+3价3沼气主要成分是______4保持氦气化学性质的
保持水的化学性质的最小粒子是保持氯化钠化学性质的最小粒子是氧化汞受热分解反应中的最小粒子是和.
用化学符号表示1汞原子2+2价的镁元素3m个铵根离子4葡萄糖5保持氮气化学性质的最小微粒
用化学符号表示.12个硝酸根离子23个金原子3沼气主要成分是4保持氮气化学性质的最小粒子.
用相应的粒子名称填空1分子是保持物质的最小粒子2原子是化最小的粒子3保持氧气化学性质的最小粒子.
用化学符号表示⑴2个氢原子_____⑵2个氢分子_____⑶盐酸_____⑷硫酸铝_______⑸钙
回答下列问题1用恰当的化学符号表示氧元素2个氢原子n个钠离子保持氧气化学性质的最小粒子.2写出下列符
用化学符号表示1汞原子2+2价的镁元素3m个铵根离子4葡萄糖5保持氮气化学性质的最小微粒
写出1的化学式画出2的结构示意图1保持氮气化学性质的最小粒子2钠原子的结构示意图
用化学符号填空:1溴化钠2保持氧气化学性质的最小粒子是3硝酸铵中显-3价的氮元素
用化学符号表示1金刚石_________2保持水化学性质的最小粒子________32个锌离子___
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保持氧化汞化学性质的最小粒子是保持汞的化学性质的最小粒子是
用化学符号表示1空气中含量占第二位的物质23个氮原子32个镁离子4保持二氧化碳的化学性质的最小粒子是
化学符号填空1金属银____2保持氧气化学性质的最小粒子____33个氮气分子4标出二氧化硫中硫元素
用正确的数字和化学符号填空1两个铁原子____▲__2带3个单位正电荷的铝离子___▲___3氧化镁
下列叙述中正确的是
氧分子是保持氧气性质的最小粒子
氯酸钾中含有氧分子，故加热时能放出氧气
氮气和氧气混合后，它们的化学性质都会改变
氮分子是保持氮气化学性质的最小粒子
请你用相应的化学符号填空1地壳中含量最多的元素_____________2两个氢氧根离子______
回答下列问题1用化学符号表示①3个铝原子②保持氮气化学性质的最小粒子③4个铵根离子2符号2SO42﹣
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MyparentsusedtotellmehowimportantschoolwasformebutIdidn'tthinkso.Ipaidlittleattentiontoit.Butonethingletmefinally1whatmyparentsmeant.OnedaywhenI2amobilephonestoreIsawanadvertisementonitsdoor.Itwashiringnewworkers!'Sirareyouhiringpeople?'Iwent3theshopandasked.'Yesbutyoushouldbethemanwhoweneed'themanageranswered.Helookedatmeforafew4fromheadtofoot.'Doyouhaveahighschooldiplom__凭?'5he'Ordoyouhaveanyworkexperience?Ifeltsoashamedand6thatIdidn'tknowwhattosaysoIjustturnedaroundandleft.IcouldnotfallasleepthatnightandIthoughtalotaboutmy7.'ImustgotoschoolorIcan'tdoanythingwithoutagoodeducation'I8tomyselfsilently.Ineverwentbacktothestoreagain9Ifinishedmystudyandgotadiploma.10lookedthesamewhenIreturnedtothestore:thesamepeopleandthesamedesign.HowevercomparedwithlasttimeIhadmore11C.Themanagertoldmetheyneedednew12.Soitwasagreatchanceforme.I13mydiplomatothemanager.Helookedatitandsaid'Greatyouarein.'NowIamstillworkinginthesamestore.WiththisexperienceIalways14peopletoattendschool.Educationhelpsyouhaveabrightfuture.NowIamnotworriedaboutmyfuturebecauseI'mstill15inmysparetime. 1.A.realize B.remember C.wonder D.imagine2.A.wentthrough B.leftfor C.steppedinto D.walkedpast 3.A.outof B.into C.with D.onto 4.A.days B.hours C.minutes D.seconds 5.A.continued B.answered C.warned D.reported 6.A.uncomfortable B.impolite C.unkind D.impatient7.A.hobbies B.future C.parents D.manager 8.A.shouted B.listened C.said D.cried 9.A.when B.while C.after D.before 10.A.Nothing B.Everything C.Nobody D.Everybody 11.A.grade B.luck C.confidence D.pleasure 12.A.volunteers B.teachers C.students D.workers 13.A.sold B.showed C.sent D.shook 14.A.teach B.allow C.order D.advise 15.A.learning B.working C.playing D.chatting
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FormerpresidentofSingaporeLeeKuanYewpassedawayMondaymorningMar23. A.on B.at C.in D.by
6分WhilemanyyoungpeoplewereenjoyingthesummervacationsZachBonnerwasworkinghishardest.ZachstartedwalkingfromValricoFloridahishometownonChristmas2009.HereachedLosAngelesninemonthslaterinSeptember2010.Hecoveredatotalof2478milesandraised￥120000forkidsinneed.AlongthewayZachattendedschoolonline.Hismotherbrotherandsistertookturnstowalkordrivetogetherwithhim. AlthoughheisveryyoungZachhasalonghistoryofhelpingothers.Whenaterriblestormhittownin2004Zachwhensixpulledawagon小推车throughhiscommunityandcollectedfoodforpeopleinneed. Hehasraised￥400000forhisLittleRedWagonFoundationsincethen.Itgivesmoneytoprojectswhichhelphomelesschildren.In2007Zachbeganwalkingtosupportachildren'scharity慈善组织inTampaFlorida.Hefinishedhisjourney23yearslater280milesawayinTallahassee.Theninthesummerof2009hetrekkedabout670milesfromAtlantatoWashingtonD.C.injusttwomonths. AslongastherearehomelesskidsIwillneverstopwalkingforthemZachsays. 5.WhatdidZachdoduringthesummervacationin2010? A.Hestayedathometolookafterhisfamily. B.Hetraveledtohishometownwithhisfamily. C.Hejoinedinaschoolactivitywithotherkids. D.Hewalkedtocollectmoneyforkidsinneed. 6.WecanlearnfromParagraph2thatZach. A.begantohelppeopleataveryearlyage. B.mademoneytopayforhiseducation C.enjoyedplayingaroundinhiscommunity D.workedveryhardforhisfamily 7.TheunderlinedwordtrekkedinParagraph3probablymeans. A.延伸 B.挖掘 C.跋涉 D.飞行 8.WhichofthefollowingbestdescribeZach? A.Friendlyandshy. B.Sillybutlovely. C.Kindandhelpful. D.Cleverbutlazy.
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阅读短文并按要求完成66～70题.Lookaroundandyou'llseepeoplearebusyontheirsmartphones.Smartphonesdomakeourliveseasierthanbefore.Buthaveyoueverthoughtaboutwhattheymeantoyoureyes?AccordingtoastudyhalfofBritishpeopleownsmartphonesandtheyspendanaverage平均oftwohoursadayusingthem.Therehasbeena35%increaseinthenumberofpeopleintheU.K.whoareshortsighted近视aftersmartphoneswereintroducedtherein1997.Lookingatsmartphonesforalongtimegivesyoudryeyes.Whenlookingatsomethinginthedistanceyoureyesautomaticallyblink自动眨眼acertainnumberoftimes.Howeverwhenyoulookatthingsclosertoyourfacetheblinkingslowsdown.Thiscausesdiscomfortinyoureyes.Anotherbadhabitisusingsmartphonesindarkroomsbeforegoingtosleep.Ifyoulookatabrightscreenwhenyourpupils瞳孔becomelargertoomuchlightentersyoureyes.Thiscandoharmtotheeyesandcauseadiseasecalledglaucoma青光眼.Whileyou'reprobablynotgoingtostopusingyoursmartphonethereareafewthingsyoucandotoprotectyoureyes.Holdyourphoneatleast30centimetersawayfromyoureyeswhenusingit.Takeabreakeveryhourandtrythefollowing:lookatsomethingatleastfivemetersawayfromyouandthentrytolookatyournose.Repeatthisseveraltimes.Itshouldmakeyoureyesmorecomfortable.Sopleaseremembertouseyoursmartphonesinaproperway.66题完成句子;67～68题简略回答问题;69题找出并写下全文的主题句;70题将文中画线句子译成汉语. 66.Ourlivesbecomebecauseofsmartphones. 67.WhenweresmartphonesintroducedtotheU.K.? 68.Whathappenswhenyourpupilsbecomelarger?69. 70..
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丰富多彩的课外活动可以减轻学习压力充实校园生活;同学们还可以在活动中强身健体在合作中增进友谊.但是一些学生认为参加课外活动会浪费时间分散精力;特别是活动后容易感到疲劳从而影响学… 请你围绕九年级学生在复习备考期间该不该参加课外活动after﹣classactivities这一话题展开思路谈谈你的感想. 要求: 1.请根据所提供的信息材料和话题不要逐句翻译写出结构完整语言丰 富优美表达合理语法准确符合逻辑可读性强的短文. 可适当发挥; 2.文中不能出现考生的真实姓名校名和其他真实信息; 3.词数:80左右.
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