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某商场经营某种品牌的玩具，购进时的单价是30元，根据市场调查：在一段时间内，销售单价是40元时，销售量是600件，而销售单价每涨1元，就会少售出10件玩具．（1）不妨设该种品牌玩具的销售单价为x元（...
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某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是600
某商场经营某种品牌的玩具购进时的单价是30元经市场预测销售单价为40元时可售出600个面销售单价每
经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是600件而销
某商场经营某种品牌的童装购进时的单价是60元.根据市场调查在一段时间内销售单价是80元时销售量是20
某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是600
某商场经营A种品牌的玩具购进时间的单价是30元但据市场调查在一段时间内销售单价是40元时销售量是6
某商场经营某种品牌的童装购进时的单价是50元．根据市场调查在一段时间内销售单价是80元时销售量是2
某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是600
新兴商场经营某种儿童益智玩具．已知成批购进时的单价是20元．调查发现销售单价是30元时月销售量是2
某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是60
某商场经营某种品牌的童装购进时的单价是40元．根据市场调查在一段时间内销售单价是60元时销售量是1
某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是60
某商场经营某种品牌的玩具购进时的单价是20元根据市场调查在一段时间内销售单价是30元时销售量是500
某商场经营某种品牌的童装购进时的单价是60元根据市场调查在一段时间内销售单价是80元时销售量是200
某商场经营某种品牌的玩具购进的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是600
某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是60
某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是600
某商场经营某种品牌的童装购进时的单价是60元根据市场调查在一段时间内销售单价是80元时销售量是200
某商场经营某种品牌的玩具购进时的单价是30元根据市场调查在一段时间内销售单价是40元时销售量是600
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实验室常见的几种气体发生装置如图ABC所示 1实验室可以用B或C装置制取氨气如果用B装置制取氨气其化学反应方程式为． 2气体的性质是选择气体收集方法的主要依据．下列性质与收集方法无关的是填序号下同． ①密度②颜色③溶解性④热稳定性⑤与氧气反应 3若用A装置与D装置相连制取并收集X气体则X可以是下列气体中的． ①CO2②NO③Cl2④H2⑤HCl 其中在D装置中连接小烧杯的目的是．
下列实验操作现象或数据和结论正确的是
Whyhasmylifebecomesohard?Ithoughtpain.
曾经有一种固氮的方法1100°C通N2和CaC2反应得到CaCN2．已知CaCN2+3H2O＝2NH3↑+CaCO3↓ 1某同学采用图1装置加热和夹持仪器已略去制取少量的CaCN2 ①U形管中盛放的物质是填一种其作用是 ②填“能”或“不能”用普通玻璃管代替图中石英管 2检验反应后的固体用W表示中含有氮元素该同学将适量W溶于水有气泡产生说明固体中含有氮元素该结论不正确．若要得出正确结论还需进行的实验是． 3测定W中CaCN2的质量分数 步骤Ⅰ按图2所示装置夹持仪器已略去进行实验关闭弹簧夹将漏斗中溶液逐滴加入到三颈瓶中当W反应完全后打开弹簧夹通入氮气直至氨气被200mL0.1mol•L﹣1硫酸完全吸收． 步骤Ⅱ准确量取烧杯中溶液20.00mL置于锥形瓶中滴入几滴指示剂用cmol•L﹣1NaOH溶液滴定过量的硫酸实验测得消耗标准溶液的平均体积为vmL． 已知三种常用指示剂变色pH范围如下 ①上述滴定过程中不宜选用的指示剂是填字母序号 ②三颈瓶中除了发生生成氨气的反应还有用化学方程式表示烧杯中最终吸收氨气的物质的量为mol经进一步计算可求得W中CaCN2质量分数． ③上述实验所得结果明显偏小若不考虑装置的气密性和操作误差则导致结果偏小的可能原因是写1种．
某芳香族化合物A的分子中含有CHON四种元素相同状况下其蒸气的密度氢气密度的68.5倍．现以苯为原料合成A并最终制得F一种染料中间体转化关系如下 请回答下列问题 1写出A的分子式A的结构简式． 2N﹣A的反应类型是． 3①上述转化中试剂Ⅰ和试剂Ⅱ分别是试剂Ⅰ试剂Ⅱ选填字母． a．KMnO4H+b．Fe/盐酸c．NaOH溶液 ②若上述转化中物质A依次与试剂Ⅱ试剂I化合物E浓硫酸/△作用能否得到F为什么． 4用核磁共振氢谱可以证明化合物E中含有种处于不同化学环境的氢． 5写出同时符合下列要求的两种D的同分异构体的结构简式． ①嘱于芳香族化合物分子中有两个互为对位的取代基其中﹣个取代基是硝基 ②分子中含有结构． 6有一种D的同分异构体W在酸性条件下水解后可得到一种能与FeCl3溶液发生显色反应的产物写出W在酸性条件下水解的化学方程式． 7F的水解反应如下 化合物H在一定条件下经缩聚反应可制得高分子纤维广泛用于通讯导弹宇航等领域．请写出该缩聚反应的化学方程式．
下表是在相同温度下三种酸的一些数据下列判断正确的是
二甲醚是一种重要的清洁燃料也可替代氟利昂作制冷剂等对臭氧层无破坏作用．工业上可利用煤的气化产物水煤气合成二甲醚．请回答下列问题 1煤的气化的主要化学反应方程式为． 2煤的气化过程中产生的有害气体H2S用Na2CO3溶液吸收生成两种酸式盐该反应的化学方程式为． 3利用水煤气合成二甲醚的三步反应如下 ①2H2g+COg⇌CH3OHg△H＝﹣90.8kJ•mol﹣1 ②2CH3OHg⇌CH3OCH3g+H2Og△H＝﹣23.5kJ•mol﹣1 ③COg+H2Og⇌CO2g+H2g△H＝﹣41.3kJ•mol﹣1 总反应3H2g+3COg⇌CH3OCH3g+CO2g的△H＝ 一定条件下的密闭容器中该总反应达到平衡要提高CO的转化率可以采取的措施是填字母代号． a．高温__b．加入催化剂c．减少CO2的浓度d．增加CO的浓度e．分离出二甲醚 4已知反应②2CH3OHg⇌CH3OCH3g+H2Og某温度下的平衡常数为400．此温度下在密闭容器中加入CH3OH反应到某时刻测得各组分的浓度如下 ①比较此时正逆反应速率的大小v正v逆填“＞”“＜”或“＝”． ②若加入CH3OH后经10min反应达到平衡此时cCH3OH＝该时间内反应速率vCH3OH＝．
化学与生活社会密切相关．下列说法不正确的是
Astudentdoesnotknowanyoftheanswersonatest.Allthequestionsontheanswerpageareunfamiliartohimandwhentheresultscomebackthestudentrealizesthathehasfailed.1.Bycopyingtheworkofothershecanruinhisgradeaswellashisfuture. Mostpeoplehavecheatedatleastonceintheirliveswhetheritwasformissedorincompleteworkorevenjustforcredit分数thattheydidn'tdeserve.2.Itshowslessresponsibilityaswellaslessknowledge.Forexampleifastudentcheatsusingaclassmate'sexampaperheistakingcreditforanother'swork.Iftheteachercatcheshimtheconsequence后果isusuallyfailure. Cheatingbyusingtheworkofothersisthesameasruiningyourlifewithdrugs.Ifastudentcontinuescheatingthenitmaybecomeahabitinthefuture.3.Weallhavebrainsthatwecanuseandalsoourteachersandparentscanhelpus. 4.Inthebeginningwhenthestudentisinprimaryschoolcheatingmayonlyleadtolosingcredit.Inmiddleschooltherewillbeparent﹣teacherconferences.Butinhighschoolcollegeandtherestofaperson'slifecheatingwillnotbeignored. Ofallthingstakingcreditforotherpeople'sworkisnotonlyunnecessarybutquiteunreasonableaswell.Ifwealljustdoourworkthenthereisnoneedtocheat.5. A.Buttakingtheworkofothersandusingitasyourownisnottherightthingtodo. B.Theycanjusttelltheirparentsthetruth. C.Thisisthesituationforthosewhocopytheirhomeworkfromothers. D.Thereisnoneedtoruinbothyourhealthandyourmind. E.Besidesnooneneedstocheat. F.Peoplewhocheatusuallyhavetofacetheconsequences. G.Weshouldmakeaneffortduringoureducationinsteadoftakingtheeasywayout. 1. 2. 3. 4. 5.
关于下列各实验的叙述中不正确的是
8分Myfirstchildwasbornin1986andtwoandahalfyearslaterIhadmydaughter.AllIeverdidfromthenonwastakingcareofkidsandourhome.ThroughoutthoseearlyyearswheneverIwentsomewhereandwasaroundotheradultsIwouldbeaskedwhatIdid.FartoomanypeoplehadthesamereactionwhenItoldthemIwasastayathomemom.ItmademeveryangryatsuchtypeofresponseasOhyoureallydon'tdoanything.IworkedhardasamomandItookmyjobveryseriously!Raisingchildrenisdoingsomethingandisextremelyimportant. Sothat'swhenIdecidedtofindawaytodealwiththeseignorantpeopleandtoboostmyselfesteem自尊atthesametime.Onmanyofthesocialoccasionssomeoftheprofessionalwomenwouldgivemetheirbusinesscardasiftoshowmethattheyactuallydidsomethingandhadsomeimportanttitle.Idecidedtogivemyselfaveryimpressiveimportantsoundingtitleandthenmakeupabusinesscardtohandout. IthoughtaboutwhatIactuallydidasamomoverthenextfewdays.ItookspecialcaretomakesureIwasgivingmychildrenthebestcareinstructionandinformationIpossiblycould.Itwasmyjobtoteachmykidshowtospeakhowtoeathowtodresshowtogetalongwithothersandsoon.Ispecializedintheacademic学业的socialandemotionaldevelopmentofhumanbeings﹣mykids!AfterreadingmybriefoverviewofmyownjobIcameupwithmynewimpressivetitleHumanDevelopmentSpecialist. AteveryopportunityIhandedoutmycard.99.99%ofthetimepeoplewereobviouslyimpressed!Itreallymademefeelbetter.MostpeoplemadeaguessatwhataHumanDevelopmentSpecialistisordoesandIjustletthemthinkwhatevertheywantedto. 1.Wecanlearnfromthefirstparagraphthatthewriter. A.hadagoodjobbeforeshehadchildren B.inheropinionlookingafterchildrenathomeisofgreatimportance. C.couldn'tfindasatisfyingjob D.didn'tknowhowtogetonwithotherwomen 2.Whatdidthewriterdotoimproveherselfesteem? A.Shemadeherselfabusinesscard. B.Shepretendedtohaveagoodjob. C.Shestartedabusinessathome. D.Shetoldothershowshewasignored. 3.Whatwasotherpeople'sreactiontothewriter'stitle? A.Mostofthemfeltproud. B.Mostofthemwereexcited. C.Mostofthemweredisappointed. D.Mostofthemwereimpressedandpuzzled. 4.Whatwouldbethebesttitleforthepassage? A.FamilyIsMoreImportantThanWork B.BeingaMomMeansGivingupManyThings C.BeingaFulltimeMomIsImportant D.PeopleHaveEqualRights
LastyearmybrotherandIwenttoMiamiforavacation.Someofmyfriendswhohadbeentherebeforesaid1wasawonderfulholidaydestination.Beforewewentwehadplannedformonths.Whenthedaycamewewereready. Afterourplanelandedwewenttothehotel.Wehadmadeourreservation预定sixmonths2earlybutthemanatthefrontdesksaidtherehadbeenamistake.We3tellthatourroomshadn'tbeenreservedforthatweek4fortheweekafter.Ididn'tunderstand5thiswouldhappenandmycreditcardhadalreadybeencharged6thereservation.What'sworsethehotelhadbeenfullybooked.Whenwewerewonderingwhattodooutcamethemanager7wassurprisinglyhelpful.SheapologizedforthemistakeandgaveusaspareVIProomon8topfloor.Wehadneverstayedinsuchan9amazeroomandweweren'tchargedextra. ThenextdaymybrotherandIwenttothebeach10wewatchedsomepeopleplayvolleyball.Wegotalittlesunburntbutthedayhadbeensorelaxingthatwedidn'tmind. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
下述实验方案能达到实验目的是
Followtheinstructprintedonthebackofthebox.
In1978Iwas18andwasworkingasanurseinasmalltownabout270kmsawayfromSydneyAustralia.Iwaslookingforwardtohavingfivedaysofffromduty.UnfortunatelytheonlyonetrainadaybacktomyhomeinSydneyhadalreadyleft.SoIthoughtI'dhitcharide. Iwaitedbythesideofthehighwayforthreehoursbutnoonestoppedforme.FinallyamanwalkedoverandintroducedhimselfasGordon.Hesaidthatalthoughhecouldn'tgivemealiftIshouldcomebacktohishouseforlunch.HenoticedmestandingforhoursintheNovemberheatandthoughtImustbehungry.Iwasdoubtfulasayounggirlbutheassured使…放心meIwassafeandhealsoofferedtohelpmefindalifthomeafterwards.Whenwearrivedathishousehemadeussandwiches.Afterlunchhehelpedmefindalifthome. Twenty﹣fiveyearslaterin2003whileIwasdrivingtoanearbytownonedayIsawanelderlymanstandingintheglaringheattryingtohitcharide.IthoughtitwasanotherchancetorepaysomeoneforthefavourI'dbeengivendecadesearlier.Ipulledoverandpickedhimup.Imadehimcomfortableonthebackseatandofferedhimsomewater. AfterafewmomentsofsmalltalkthemansaidtomeYouhaven'tchangedabitevenyourredhairisstillthesame.Icouldn'trememberwhereI'dmethim.Hethentoldmehewasthemanwhohadgivenmelunchandhelpedmefindaliftallthoseyearsago.ItwasGordon. 1.Theauthorhadtohitcharideonedayin1978because. A.shemissedtheonlytrainbackhome B.thetownwasfarawayfromSydney C.shewasgoinghomeforherholidays D.herworkdelayedhertriptoSydney 2.WhichofthefollowingdidGordondoaccordingtoParagraph2? A.Hegavethegirlaridebackhome. B.Hehelpedthegirlfindaride. C.Hewatchedthegirlforthreehours. D.Heboughtsandwichesforthegirl. 3.Thereasonwhytheauthorofferedalifttotheelderlymanwasthat. A.sherealizedhewasGordon B.shehadknownhimfordecades C.shewantedtorepaythefavoursheoncegot D.shewasgoingtothenearbytown 4.Whatdoestheauthorwanttotellthereadersthroughthestory? A.Thosewhogiverideswillberepaid. B.Givingsometimesproducesniceresults. C.Goodmannersbringabouthappiness. D.Peopleshouldofferfreeridestoothers.
四种常见的短周期非金属元素在周期表中的相对位置如下所示其中乙元素原子核外最外层电子数是其电子层数的三倍． 请用化学用语回答 1丙在元素周期表中的位置 2丁单质的电子式 3乙的两种常见单质分别是 4甲乙丙丁的气态氢化物水溶液显酸性的是写化学式 5氢元素和乙组成的化合物中既含有极性共价键又含有非极性共价键的是写化学式．此化合物可将碱性工业废水中CN﹣氧化为可溶性碳酸盐和氨相应的离子方程式 6电解丁的钠盐饱和溶液的离子方程式 7若甲的元素符号为X．已知①X2g+2O2g═X2O4l△H＝﹣19.5KJ/mol②X2H4l+O2g═X2g+2H2Og△H＝﹣534.2KJ/mol则液态X2H4和液态的X2O4反应生成气态X2和气态H2O的热化学方程式为．
I'vereadlotsofstoriesaboutfamilymemories.InthosestoriesI'vefound1ofsadnessandlonging.It'struethatsomuchinourdailylivesmakesus2allthetime.Wefindourselveswithlessandlesstimetosparewithour3andfriends.I'vehadthesame4myself. Iusedtohave5timeswithmygrandfatherwhenwelivedtogether.WhenIwasveryyoungIoftenenjoyedspendingtimeinhis6watchingtheflowersandwateringthefruittrees.ButasIgrewupI7becameselfish. OncewhenIwas16wewentshoppingtogether.Aswetookthewrongbusandendedupgetting8unabletofindourwaybackIcouldn'tstay9andshoutedrudelyinhisface.Iwasso10thatIwouldn'tsaysorryafterreturninghomethinkingIhaddonenothingwrong. NowI11howridiculous荒唐的Iwasatthetime!AndIalsorealizehow12itwaswhenIfinally13Iwaswrong!WhenItrulywantedtoexpressmy14mygrandfatherhadleftusforeverleavingmewithnomore15to16mymistake.Icouldn't17saytohimthethreewords﹣﹣Iamsorry. Wearebecomingbusierandbusieroutsidewithlessandlesstimeto18withourfamiliesathome.So19thebestuseofeverysecondyouhavewithyourlovedonesbecausetime20goingwaitingfornoone. 1.A.promise B.response C.feelings D.signal 2.A.crazy B.easy C.angry D.busy 3.A.classmates B.families C.colleagues D.employers 4.A.adventure B.experience C.exploration D.research 5.A.good B.hard C.sad D.bitter 6.A.kitchen B.garage C.garden D.house 7.A.frequently B.rarely C.finally D.gradually 8.A.confused B.lost C.hurt D.puzzled 9.A.awake B.calm C.firm D.happy 10.A.stubborn B.intelligent C.fierce D.doubted 11.A.judge B.imagine C.realize D.agree 12.A.early B.late C.nice D.guilty 13.A.admitted B.appreciated C.doubted D.inspected 14.A.concern B.worry C.opinion D.regret 15.A.confidence B.chance C.evidence D.attention 16.A.careabout B.apologizefor C.thinkof D.putaway 17.A.again B.often C.even D.still 18.A.spend B.save C.take D.kill 19.A.follow B.receive C.divide D.make
下列图示与对应的叙述相符的是
Doyourememberthosetimeswhenyourmothertoldyoutoavoidtalkingtostrangers?Butnowyou'renotachildanymore.Infacttherearemanyadvantagesoftalkingtostrangers. ●Youcanmeetareallygreatperson Talkingtoastrangerisagoodhabitbecauseyouneverknowwhomyoumaymeet.1Youcanalsomeetsomeonewhowillgiveyouachancetogetyourdreamjob. ●2 Youhavesomeopinionaboutdifferentsubjectsandyouknowyourfriends'andrelatives'pointsofviewaboutthemtoo.Buttherearemillionsofotherpeoplewhothinkdifferentlyandcangiveyouunpredictableyetsmartideasthatwillbroadenyourhorizons. ●Youimproveyoursocialskills 3.Askingappropriatequestionsandattentivelisteningaretwoskillsthatmanyofusdon't have.Youcanbettertheseskillswhentalkingtoastranger. ●Youcanoffersomeonecomfort. Thethingyou'lldefinitelylikeabouttalkingtostrangersisthatyoucanmakesomeone'sdaybetter. 4.Praisepeopleandtheywillthinksomethingpleasantaboutyou.Havingasweetshortdialogueisoneofthoseperfectchancestomakepeoplecheerful. ●Youcanfindthesolutionsyoudidn'tknowabout. Talkingtosomeoneyoudon'tknowisallaboutfindingoutsomethingyoudidn'tknow.Youmayhavesomeproblemsthatyoucan'tsolveforalongtime.Howeversomeoneyousuddenlymeetcanfigureouttherightsolutionyoudidn'teventhinkaboutbefore.5 A.Smileandpeoplewillsmileinreturn. B.youcanexpandyourworldview. C.Whynotspeaktosomeoneuntilyourturncomes? D.Youshouldn'tmisstheseunexpectedchancesofmeetingpeople. E.Youcanmeetapersonwhowillbecomeyourbestfriendinthefuture. F.Itmaybeahelpyouneededtogetalongtimeago. G.Whateversocialskillsyouhaveyoucanmakethembetterwhentalkingtostrangers. 1. 2. 3. 4. 5.
化学与人类生产生活密切相关．下列有关说法不正确的是
largenumberofreportersgatheredinthehallwaitingtointerviewthestar.
下列离子方程式正确的是
下列表示正确的是
Bythetimehearrivethetrainhadalreadyleft.
目前“低碳经济”备受关注CO2的产生及有效开发利用成为科学家研究的重要课题．试运用所学知识解决下列问题 1已知某反应的平衡表达式为K＝它所对应的化学反应为 2一定条件下将Cs和H2Og分别加入甲乙两个密闭容器中发生1中反应其相关数据如表所示 ①T1℃时该反应的平衡常数K＝ ②乙容器中当反应进行到1.5min时H2Og的物质的量浓度填选项字母． A．＝0.8mol•L﹣1B．＝1.4mol•L﹣1C．＜1.4mol•L﹣1D．＞1.4mol•L﹣1 ③丙容器的容积为1LT1℃时按下列配比充入CsH2OgCO2g和H2g达到平衡时各气体的体积分数与甲容器完全相同的是填选项字母． A.0.6mol1.0mol0.5mol1.0mol B.0.6mol2.0mol0mol0mol C.1.0mol2.0mol1.0mol2.0mol D.0.25mol0.5mol0.75mol1.5mol 3将燃煤废气中的CO2转化为甲醚的反应原理为2CO2g+6H2gCH3OCH3g+3H2Og 已知一定压强下该反应在不同温度不同投料比时CO2的转化率见下表 ①该反应的焓变△H0熵变△S0填＞＜或＝． ②用甲醚作为燃料电池原料在碱性介质中该电池负极的电极反应式．若以1.12L•min﹣1标准状况的速率向该电池中通入甲醚沸点为﹣24.9℃用该电池电解500mL2mol•L﹣1CuSO4溶液通电0.50min后理论上可析出金属铜g．
BestcomicbookshopsforNYCkids BLAM!POW!FestivaliscomingtotownJan.9and10atthe69thRegimentArmorywithsigningspanelsandmilesandmilesofcomicbooks.Ifyou'reafull﹣blowncomicsnerd书呆子yourselfatriptothecity'scoolestcomicbookstoreswillbeagoodchoiceasyoucountdowntothebigday. BulletproofComicsandGames Fanswillfindeverythingfromthekid﹣friendlyTinyTitansseriestothelatestissueofX﹣Men.Onweekendsfamiliescanevenjoinavideogametournamentallageswelcome. *2178NostrandAveBrooklyn ForbiddenPlanet Thisstorepacksplentyofinterstellar星际的actionStarWarsandStarTrekactionfiguresvehiclesandvariousothercollectibles收藏品competeforshelfspacewithcomicbooksandinsiderytradepaperbacks.Upstairsyoungreaderscanbrowsethroughthestore'sextensivemanga漫画andanime动漫selection. *840Broadwayat13thSt JimHanley'sUniverse Besidesthegalacticarray银河阵列ofcomicbookssuchcollectiblesasCaptainAmerica'sshieldandIronMan'shelmetattractbudding初露头角的superheroesandtheirparentstoo. *4W33rdStbetweenFifthandSixthAves SilverAgeComics NestledinacorneroftheDitmarsBoulevardsubwaystationthisstore'suniquecoollocationisextra﹣convenientforfamiliesonthemove.Plusitsentirecollectioniscataloguedonlinesoyou'llknowifthatrareissueofDoomPatrolisinstockbeforeyouheadout. *22﹣5531stStbetweenDitmarsBlvdand23rdAveAstoriaQueens MidtownComics WanttofindthebestSpider﹣Manbooktogetyourchilduptospeed?JustaskoneoftheknowledgeableblueT﹣shirtcladstaffers包层员工.Limited﹣timediscountsareavailableamongthemanEasterSundayspecial20percentoffeverything. 200W40thStbetweenSeventhandEighthAvesSeewebsitesforotherlocations. 1.Inwhichcomicbookshopcanyousavemoney? A.MidtownComics B.ForbiddenPlanet C.BulletproofComicsandGames D.JimHanley'sUniverse 2.Ifyou'reinterestedincollectiblesrelatedtoCaptainAmericayoumaygoto. A.840Broadwayat13thSt B.200W40thStbetweenSeventhandEighthAves C.2178NostrandAveBrooklyn D.4W33rdStbetweenFifthandSixthAves 3.WhatisthedifferencebetweenSilverAgeComicsandtheothercomicbookshops? A.Itissofamousforitscoollocationthatmanyfamiliesgotherebysubway. B.Itholdsactivitiesforfamiliestojoinavideogametournamentonweekends. C.Youcangetinformationaboutthebookyouwantonlinebeforegoingthere. D.YoucanfindotherlocationsofitontheInternetwithoutanydifficulty.
Imagineyourselfonaboatlookingoutatthehorizonandallyoucanseeisthewatermeetingtheskywithnolandinsightandyouaresailingstraightaheadtomeettheworld.JesseMartindoesnothavetoimagineheislivinginit. OnDec.71998at17yearsoldJessesetsailfromMelbourneAustraliaonhisboatattemptingtobecometheyoungestpersontosailaloneandnonstoparoundtheworld.HesailedsouthofNewZealandthroughtheSouthPacificaroundSouthAmericanorthontheAtlanticbacksouthpastAfricathroughtheIndianOceanandbacktoMelbourne.EvenasayoungchildJessehadbeenanadventurerwhotraveledalloverEuropeandAsiawithhisparents.BorninMunichGermanyin1981hemovedtoAustraliawithhisfamilywhenhewasonlytwoyearsold.TheymovedclosetoarainforestinCowBayabout3500kmsnorthofMelbournewheretheybuiltasmallhousewithnoelectricityorrunningwater.Jessegrewupatthebeachenjoyingtheoutdoorstoitsfullest.At14hesailedforthefirsttimewithhisfatherandbrotherBeau.Itwasafterthistripthathebegantodreamaboutsailingaroundtheworld. Jesse'sfamilyplayedanimportantrole.IwasmadetobelieveIcoulddoanythingalthoughtherewereothersthatwerenotsoencouragingorsupportivehesays.PeoplethatIlookeduptorespectedandtrustedtoldmeIcouldn't.ThankfullyItrustedmyself.Therewerepeoplethatsaidthattheboatcouldn'tbereadybythetimeIhadtoleave.Howeverthroughperseveranceandbeliefinhimselfhewasabletodowhatmanytoldhimwasimpossible. OnOct.311999morethan10monthsafterhesetsailJesseMartinwentdowninhistoryastheyoungestpersontosailaroundtheworldalonenonstopandunassisted. 1.Byencouragingreaderstoimagineasailingexperiencetheauthorwantsto. A.showhowdifficultitistobeasailor B.describewhatJesse'ssailingislike C.showhowwonderfulJesse'slifeis D.describewhatasailor'slifeislike 2.Whatcanyouknowfromparagraph2? A.Jessewasthefirstpersonwhohadsailedalonearoundtheworld. B.JessetraveledalloverEuropeandAsiawithhisparentswhenhewas17. C.JessewasborninMelbourneandgrewupatthebeach. D.Jessegrewupinasmallhousewithnoelectricityorrunningwater. 3.WhatmadeJessedecidetosailalonearoundtheworldaccordingtothepassage? A.Hischildhoodadventureexperiences. B.HisjourneystoEurope. C.Hisloveforoutdooractivities. D.Hisfirstsailingtripwithhisfamily. 4.WhatcanwelearnfromJesseMartin'sstory? A.Lifeisanunusualadventureweshouldenjoy. B.Failureisthemotherofsuccess. C.Astrongbeliefwillmakeapersonstronger. D.Greatinterestcontributestosuccess.
Idon'tencouragepeopletotakephotographslikethiswithoutpermit.
Ifyouarehungrywhatdoyoudo?Haveyourfavoritemealandstayquietafterthat?Justlikeyourstomachyourmindisalsohungry.Butitneverletsyouknowbecauseyoukeepitbusythinkingaboutyourfriendsorfavoritestars.Soitsilentlyservesyourneedsandneverletsitselfgrow.Whenmindlosesitsfreedomtogrowcreativity创造性setsafullstop.ThismightbethereasonwhyweallsometimesthinkWhathappensnext?Whycan'tIthink? Hungerofthemindcanbeactuallysolvedthroughwidereading.WhyreadingbutnotwatchingTV?Itisbecausereadinghasbeenthemosteducativetoolusedbyusrightfromchildhood.Sinceitdevelopsotherwaysofourlifewehavetotakehelpfromreading. Onceyoureadabookyourunyoureyesthroughthelinesandyourmindtriestoexplainsomethingtoyou.Theinterestingpartofthebookisstoredinyourmindasaseed种子.Nowthisseedisunknowinglyusedbyyoutodevelopnewideas.Ifitisusedmanytimesthesameseedcangiveyougreathelptorelatealotofthingswhichyouwouldhaveneverthoughtofinyourwildestdreams! Thisisnothingbutcreativity.Alsothismakesahugecontributiontoyourvocabulary.WithinnotimeyoucanstarttalkingwithyourfriendsinEnglishoranyotherlanguageandneverrunoutoftherightwords. Soguysdogivefoodforyourthoughtsbyreadingreadingandmorereading.Nowwhatareyouwaitingfor?Goandgetabook! 1.Whenyourmindishungrythebestwayis. A.thinking B.eating C.reading D.watchingTV 2.WhichofthefollowingisRIGHTaccordingtothepassage? A.Whenyoureadabookyourmindlosesitsfreedomtogrow. B.Inyourwildestdreamaseedcangrowalotofdifferentthings. C.Theinterestingpartofthebookyoureadcanhelpyoudevelopnewideas. D.WatchingTVisthemosteducativewayforustodevelopcreativityinourlife. 3.ThefollowingareadvantagesofreadingEXCEPTthat. A.readingfeedsyourhungrymind. B.readingmakescreativitysetafullstop. C.readingcanhelpyourelatealotofthings. D.readingwillcontributetoyourvocabulary. 4.What'sthepurposeofthepassage? A.Tointroduceabook. B.Topersuadeustoread. C.Toexplainhungerofmind. D.Totellushowtocreatethings.
VWXYZ是原子序数依次递减的五种常见元素．X元素是地壳中含量最多的元素YZ组成的气态化合物M的水溶液呈碱性W的单质在X2中燃烧产物可使品红溶液褪色V是一种历史悠久应用最广泛的金属元素．请回答 1Y元素在周期表中的位置是写出XZ两种元素组成的化合物Z2X2的一种用途． 2由以上五种元素两两组合所形成的化合物中有一种物质能与水反应生成气体且反应属于氧化还原反应请写出该反应的化学方程式． 3XYZ三种元素可组成一种强酸UM在适当条件下被U吸收生成一种盐．该盐的水溶液的pH7填“大于”“小于”或“等于”．原因是用离子方程式表示 4若将V金属投入到盐酸溶液中生成了浅绿色溶液N．N的酸性溶液与双氧水反应的离子方程式． 5有人设想寻求合适的催化剂和电极材料以Y2Z2为电极反应物以HCl﹣NH4Cl溶液为电解质溶液制造新型燃料电池试写出该电池的正极电极反应式．放电时溶液中H+向填“正”或“负”极．
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