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属于纯净物的是（ ）
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下列物质中属于纯净物的是
胆矾
水泥
纯净的盐酸
普通玻璃
下列物质属于纯净物的是
纯净的空气
稀硫酸
铜绿
氩气
有下列物质①硫粉②冰水混合物③纯净空气④高锰酸钾完全分解后的固体剩余物⑤二氧化硫⑥铜⑦过氧化氢溶液⑧
下列物质中属于纯净物的是
冰水混合物
纯净的盐酸
洁净的空气
CuSO
4
溶液
下列物质属于纯净物的是属于混合物的是①纯净水②二氧化碳③正在加热的高锰酸钾④液态空气
单质和化合物都属于纯净物
下列物质中属于纯净物的是
纯净的空气
纯净的氮气
盐酸
碘酒
下列物质属于纯净物的是
纯净的食盐水
冰水混合物
河水
清新的空气
下列物质属于纯净物的是
天然气
爆鸣气
冰水混合物
纯净的无污染的空气
下列几种物质水氧气氢气铁氯化钠海水属于混合物的是属于纯净物的是上述纯净物中属于单质的是属于化合物的是
根据物质组成是否单一可将物质分为混合物和纯净物如空气.澄清石灰水属于混氧气.五氧化二磷属于.根据纯净
下列物质属于纯净物的是
冰水混合物
纯净的无污染的空气
天然气
碘酒
纯净物是由一种物质组成的下列物质属于纯净物的是
纯净水
纯净的空气
二氧化碳
矿石
列有关物质的分类错误的是
空气属于化合物
水属于氧化物
氧气属于纯净物
甲烷属于有机物
下列物质属于纯净物的是
纯净的盐酸
冰水混合物
铝合金
净化后的空气
下列物质中属于纯净物的是
下列物质中前者属于纯净物后者属于混合物的是【】
医用酒精、空气
纯净水、冰水混合物
苛性钠、盐酸
黄铜、石灰石
研究物质的性质必须取用纯净物下列物质中属于纯净物的是
空气
啤酒
干冰
硬水
根据物质组成是否单一可将物质分为混合物和纯净物如空气.澄清石灰水属于氧气.五氧化二磷属于.根据纯净物
下列物质属于纯净物的是
米醋
洁净的空气
冰水混合物
纯净的自来水
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8分Someyearsagowritinginmydiaryusedtobeausualactivity.Iwouldreturnfromschoolandspendtheexpectedhalfhourrecordingtheday'seventsfeelingsandimpressionsinmylittlebluediary.IdidnotreallyneedtoexpressmyemotionsbywayofwordsbutIgainedacertainsatisfactionfromseeingmyexperiencesforeverrecordedonpaper.Afterallisn'taccumulatingmemoriesawayofpreservingthepast WhenIwasthirteenyearsoldIwentonalongjourneyonfootinagreatvalleywell﹣equippedwithpensadiaryandacamera.DuringthetripIwasbusyrecordingeveryincidentnameandplaceIcameacross.Ifeltproudtobespendingmytimeproductivelydutifullypreservingforfuturegenerationsadetaileddescriptionofmytravels.OnmylastnightthereIwanderedoutofmytentdiaryinhand.Theskywasclearandlitbytheglareofthemoonandthewallsofthevalleylookedthreateningbehindtheirscreenofshadows.Iautomaticallytookoutmypen… AtthatpointIunderstoodthatnothingIwrotecouldevermatchorreplacethefewsecondsIallowedmyselftoexperiencethedramaticbeautyofthevalley.AllIrememberedofthepreviousfewdayswerethedullcharacterizationsIhadsetdowninmydiary. NowIonlywriteinmydiarywhenIneedtowritedownaspecialthoughtorfeeling.Istilllovetorecordideasandquotationsthatstrikemeinbooksorobservationsthatareparticularlymeaningful.Itakepicturesbutnotveryoften﹣onlyofobjectsIfindreallybeautiful.I'mnolongerblindlysatisfiedwithhavingsomethingtorememberwhenIgrowold.IrealizethatlifewillsimplypassmebyifIstaybehindthecamerabusypreservingthepresentsoastoliveitinthefuture. Idon'twanttowakeuponedayandhavenothingbutapileofpicturesandnotes.MaybeIwon'thaveasmanyexactrepresentationsofpeopleandplacesmaybeI'llforgetcertainfactsbutatleasttheexperienceswillalwaysremaininsideme.Idon'tlivetomakememories﹣Ijustliveandthememoriesformthemselves. 1Beforetheageofthirteentheauthorregardedkeepingadiaryasawayof. A.observingherschoolroutine B.expressinghersatisfaction C.impressingherclassmates D.preservingherhistory 2Whatcausedachangeintheauthor'sunderstandingofkeepingadiary A.Adullnightonthejourney. B.Thebeautyofthegreatvalley. C.Astrikingquotationfromabook. D.Herconcernsforfuturegenerations. 3Whatdoestheauthorputinherdiarynow A.Notesandbeautifulpictures. B.Specialthoughtsandfeelings. C.Detailedaccountsofdailyactivities. D.Descriptionsofunforgettableevents. 4Theauthorcomestorealizethattoliveameaningfullifeis. A.toexperienceit B.tolivethepresentinthefuture C.tomakememories D.togiveaccuraterepresentationsofit
1分Hehasbeen轻打轻敲hisfingersonthetableforsometimewhichindicatesthatsomethingisbotheringhim.
30分Lookit'sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe1onmyheaditwas2horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious3afterabowlfullofhotoilfellonmyhead.Iwas4tohospitalandhadtostaythereforweekswhilethedoctors5tosavemylife.Holly'svery6tobealive'theytoldMumandDad.Butshe'llbe7withscarsonherheadandofcourseherhairwon'tgrowthere. AsachildIcaredmuchaboutmyscarssoI8woreascarftocverthemupwhenIlefthome.9Ididn'tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever10understoodhowitfelt. ThenthroughthehospitalIwas11toachildren'sburnscampwherechildrenlikemecangetanyhelp.ThereI1214﹣year﹣oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso13thatsheneverletsanyoneputherdown.Youshouldn't14whatpeoplesayaboutwhatyoulooklikebecausewe'renotdifferentfromanyoneelseHollyshe15me.Andyoudon'tneedtowearascarfbecuseyoulookgreat16it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho'dbeenthroughsomething17.Soweekslateratmy13thbirthdayparty18byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto19awaybehindmyscarf. NowIam20ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare. 1A.hat B.scarf C.scars D.cuts 2A.still B.just C.never D.seldom 3A.hunger B.cold C.defeats D.burns 4A.rushed B.led C.invited D.forced 5A.learned B.fought C.returned D.decided 6A.happy B.lucky C.lonely D.poor 7A.pressed B.occupied C.left D.painted 8A.possibly B.usually C.finally D.nearly 9A.Although B.Since C.If D.Before 10A.correctly B.roughly C.easily D.really 11A.promoted B.introduced C.reported D.carried 12A.met B.recognized C.remembered D.caught 13A.honest B.strong C.active D.young 14A.writedown B.agreewith C.passon D.listento 15A.promised B.encouraged C.ordered D.calmed 16A.in B.for C.without D.beyond 17A.similar B.strange C.hard D.important 18A.allowed B.required C.guided D.inspired 19A.hide B.give C.keep D.put 20A.sick B.aware C.tired D.proud
10分假设英语课上老师要求同桌之间互换修改作文请修改你同桌的以下作文.文中共有10处语言错误每句中最多有两处每处错误仅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限一词. 2.只允许修改10处多者从第11处起不计分. Lastweekendwegomountainclimbing.Eventheheavyraininthemorningcouldnotpreventusgoing.Setoffveryearlywewentalonganextremenarrowroadallinhighspirits.Oneverysideoftheroadwasgreenfieldsandsomefarmhouses.Wecouldhearthesoundoftherainandourfootstepsmixingwithourlaughter.Atnoonwereachedthetopofthemountain.Thatsurprisedusmosttherewasthebeautyofscenes.Afterhavingshortrestthereandsharingwiththefoodwehadbroughtwestartedgoingdown.Itrainedevenharder.Wewerewettotheskinandwestillsangandlaughedhappily.
1分Manyofthesetoolshavebeenspecially使适应改编forusebydisabledpeople.
1分Whensheheardthenewsthecupinherhand滑行滑倒downontothefloor.
10分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅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. Mentalhealthisveryimportant.Thereforeitiseasilyoverlookedwhichcanresultinseriouslymetaldiseases.Herearesomesuggestiononkeepinggoodmetalhealth. Firstknowyourownpotentialandacceptyouforwhoyouare.Insteadofhaveimpracticalexpectationsforyourselfyoushouldmakepracticalgoalsforyourlife. Secondbesociableandmakingasmanyfriendsaspossible.Trytobeapersonwhoiseasytogetalong.Whenyouarediscouragingyoucanshareyourtroubleswithyourfriendswhocanhelpyouout. Thirdloveyourlifeandwork.Trytodisplayyourtalentinyourwork.Youwilltakethepleasureinyourachievementsthatwillmakeyouhappy.
15分ThereisatraditioninmyschoolthatwhentheCollegeEntranceExaminationislessthanamonthawaystudentsinthe1lowgradesfromSenior1toSenior2allgathertogetheronthegroundinfrontoftheteachingbuildingandcheerontheSenior3studentswhoarestandingupstairs.Itwasn'tuntilI2persontookpartintheactivitythatIunderstoodthereal3meanofit. IwasinSenior2atthetime.4thatspecialnightalltheSenior3studentsstoodinthecorridors走廊andlookeddownattheyoungerstudentsbelow.5varycheersstartedtoresoundthroughouttheschoolwaveafterwave.Believeinyourself!Youdeservetowin！ 6seeeveryone'ssmilingfacesaroundmeIthoughtof7famousquotefromtheAmericanphilosopherHenryDavidThoreauWhatyougetbyachievingyourgoalsisnotasimportantaswhatyoubecomebyachievingyourgoals. Soonitwillbemyturnto8blessinthisway9alsomeansIwillhavetosaygoodbyetomyschool.Sadasitwillbebeingcheeredonbysomanystudentswillstillbeoneofthebrightest10timeofmylife.
1分﹣RonIcongratulateyouonyoursuccess. ﹣Thanksbutthehonortoallthepeoplehere. A.isbelonged B.belongs C.isbelonging D.belonged
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