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在方程3x+4y=16中当x=3时y=________当y=-2时x=_______若xy都是正整数
观察下列事实|x|＋|y|＝1的不同整数解xy的个数为4|x|＋|y|＝2的不同整数解xy的个数为8
76
80
86
92
解不等式2x＋－1≤－x＋9.
观察下列事实|x|＋|y|＝1的不同整数解xy的个数为4|x|＋|y|＝2的不同整数解xy的个数为8
下面是解不等式的部分过程如果错误说明错误原因并改正如果正确说明理由.1由2x＞﹣4得x＜﹣22由16
观察下列事实|x|+|y|=1的不同整数解xy的个数为4|x|+|y|=2的不同整数解xy的个数为8
32
40
80
100
观察下列事实|x|+|y|=1的不同整数解xy的个数为4|x|+|y|=2的不同整数解xy的个数为8
76
80
86
92
方程3x=﹣6的解是
x=﹣2
x=﹣6
x=2
x=﹣12
用配方法解一元二次方程x2+6x﹣16=0配方后的方程为
（x+3）
2
=25
（x﹣3）
2
=25
（x+3）
2
=16
（x+9）
2
=25
2a-3x=12是关于x的方程在解这个方程时粗心的小虎误将-3x看做3x得方程的解为x=3请你帮助小
观察下列事实|x|＋|y|＝1的不同整数解xy的个数为4|x|＋|y|＝2的不同整数解xy的个数为8
56
60
64
68
与方程3x+8=68的解相同的是
12x=360
8+2x=68
16x=320
据调查某种群果蝇的各种基因型及比例为XAXAXAXaXaXaXAYXaY为2l3l214则该种群中X
16％
9％
12％
8％
无理方程4﹣x+=0的解的情况是
有两解x
1
=6，x
2
=3
有一解x=6
有一解x=3
无解
观察下列事实|x|+|y|=1的不同整数解xy的个数为4|x|+|y|=2的不同整数解xy的个数为8
76
80
86
92
方程3x+x=16的解是
5
6
4
2
解不等式5x12≤24x-3
2012年高考江西文观察下列事实|x|+|y|=1的不同整数解xy的个数为4|x|+|y|=2的不同
76
80
86
92
方程x2=16的解是
x=±4
x=4
x=﹣4
x=16
2a-3x=12是关于x的方程在解这个方程时粗心的小虎误将-3x看做3x得方程的解为x=2请你帮助
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比的前项和后项同时乘以一个数它们的比值不变．判断对错
由于需要做彻底修改这本书暂时不会出版.revise.
一个圆柱的侧面展开是一个正方形这个圆柱的底面直径与高的比是
任何两个数的积不一定比商大．．
余数要小于除数或等于除数．判断对错
OnesteamyJulyafternoonincentralArkansasIwasworkingonanimportantprojectinmyhomeoffice.Mytrustyprinterwasbusyproducinganimportantreport21itsimplystopped.AfterfifteenminutesoftryingtorepairIdecidedtobuyanewprinter.Uponmyreturnmyheartfrozetoseemyhouseonfire. 22havingspentmuchofmylifewritingIwasspeechlesswhenfacingthissituation.Iwaslostforadequatewords23describethesicksinkingfeelingofseeingmyhomebusinessandbelongingsgoingupinflamesalongwithphotographsandmemories24collectoveralifetime.Butthepanicthatfilledmyshockedheartinthatawfulmomentwasfortheninecatsthatsharedmyhomeafter25rescuefromsituationsofill﹣treatmentandabandonment. Respondingtoanearlysecurity﹣systemwarningtheamazingfirefightersarrivedimmediately26thechemicalsmokehadalreadycauseddeaths.Iexaminedandkissedeachcatgoodbyeextremelygratefulthattheyhadpassedgentlywithoutinjuriesorburns. Onlyanimalloversreallyunderstandtheunbelievableimpact27thelossofonebelovedfour﹣leggedfamilymembercanhaveonyourheartmindandsoul.Thelossofsomanydearlylovedcreaturessentmeingreatsorrow. AfterstayingwithafriendofmineforacoupleofweeksIwasrelocatedtoafurnishedapartment.OneeveningaboutamonthaftermovinginI28occupyinwritingamysterynovelandatthattimeameowsoundedfromoutsidetheapartmentdoor.Wasitmymindplayingtricksagain?MorethanonceIhadheardseenorfeltthebrushofoneofmydepartedfurryroommates.Themeowgrewlouderandmorerepetitive.CuriousIopenedthedoor. Sittingonthedoorstepwasakittenwithablackcoatandalerteyes.Aneighbor29walkbypickedhimupandbeganpettinghim.WhenIremarkedhowcuteherkittenwassheexplainedthatithadbeenbornunderabridgeandlookedaroundforfood.Thiskitty﹣lovingneighborwasquicktoofferanextralitterboxifIwasinterestedingivinghimahome.Myimmediatereactionwasthat'sallIneed!withouthesitationsheputthecutekittendown.Ithankedherandclosedthedoordeterminedtojustlethimstay30arealhomecouldbefound.
看孩子们在沙滩上打排球很有趣.fun.
Mr.Brownwaswriter.Hewrotemanybooksandthethoughttheywerequitegood.Helivedinthecity.Onemorninghewenttoasmalltownnearthecitytovisitafriend.Hewenttherebybus.Whenhegottothetownhesawabookshopnotfarfromthebusstop.Asitwasearlyhedecidedtogoinandhavealook.Thereweremanybooksinheshop.Hewasveryhappythatallthebooksintheshopwerewrittenbyhim.Whereareotherwriter'sbooks?heaskedthemanintheshop.ThemanlookedupathimandansweredOhtheyareallsoldout. 1Mr.Brownwasa. A.teacher B.doctor C.writer D.farmer 2Mr.Brownwenttothetownto. A.visithisfriend B.sellhisbooks C.haveaholiday D.buyapresent 3AllthebooksintheshopwerewrittenbyMr.Brownbecause. A.themanintheshoponlylikedhisbooks B.themanintheshopwasMr.Brown'sfriend C.hisbookswerebetterthantheotherwriter's D.theother'sbookswereallsoldout
Listen!Thebirdsinthetreesoutsideourschool. A.sing B.aresinging C.sang D.weresinging
公共场所全面禁烟有助于人们养成健康的生活习惯并能有效预防某些疾病的发生.prevent.
Dr.Wang Hithere! I'mheretohelpwithanyofyourproblemswhethereatschoolorathome. Sophia @Dr.Wang Whatshouldsaytomylittlebrother? Myproblemisterrible. Mymumgaveusanewbabyacoupleofyearsago.Wewerereallyhappythenbutthislovelybabyhasgrownup! Heseemstohavetoomuchenergyandneverstopsrunningorshouting.Thedoordoesn'thelpatall﹣he'llbeknockingatitforages.Ican'tstudyathome.Ireallycan'tstandthisbutwhatshouldIsaytofour﹣year﹣oldboy?Andmyparentsarearoundhimallthetime.Theyseemtoforgeteverythingaboutme.HowImissthosesweetolddayswhenwecouldjustsitinthesofa! Canyouhelpmeout? Dr.Wang @Sophia That'sacommoncomplaint.Iknowhowawfulitiswhensomeonekeepsknockingatthedoorbutdoesn'tthatmeanthelittleonewantstostaywithyou?Justasyouwanttohaveyourparentsaroundheneedsyourattention!Ifthisdoesn'tmakeyoufeelbetteraskyourparentsforsomehelp.Justhaveatalkwithyourparents.Askthemtocalmourlittlebrotherdownortakehimoutwhenyouaredoingyourhomework.Andtellthemthatyoualsoneedtheirattention! Familylifemightnotalwaysbeassweetasthoseolddays.Sometimeswehavetowaituntilwhattroublesustodaybecomespartofthosesweetolddays. 1WasSophiahappytohavelittlebrotheratfirst? 2HowoldisSophia'slittlebrothernow? 3WhatproblemsdoesSophiahave? 4DoyouthinksomeoneelselikeDr.WangforhelpisthebestchoiceforSophia?WhyorWhynot?
通过学习化学我们了解了某些物质的性质以及物质之间的相互转化关系．如图中的物质均为教案备课库常见的物质．其中甲乙丙丁戊均为单质丙是空气中含量最多的物质常温下丁为黑色固体戊为紫色金属G是一种具有刺激性气味的气体其水溶液显碱性工业上用甲和丙化合制备G农业上常用F改良土壤如图中部分反应条件已省略． 回答下列问题 1写出下列物质的化学式C为E为G为 2A生成甲和乙的化学方程式为 3工业上可以用甲和四氯化硅在高温条件下反应来制取硅单质此反应的化学方程式为．
WhenAYouthfulAsiacameoutattheAsianCultureCarnival嘉年华tearsfilledmyeyes.It'sZhangYixingthesingeranddancerstandingthereforusyoungpeopleinChinaandtheveryonewhostoppedmefromfalling. Threeyearsagomynewschoollifebegan.AsajuniorboyfromthecountrysideIcouldhardlykeepup.Itriedbutstillfeltlikeanoutsider.Nobodywouldpickmeforteamwork.SoIstayedinthecornerhangingmyheadlowasifIdidn'tcare.Therewasafearinmethatallmyschoollifewouldbecolorless. ThenonMay4IwascolorlessinYixing'sbookabouthislife.Howcouldthisbetrueforsomeonejustnamedtheyouthidol青年偶像?Ireadthebookagainsmilingwiththefunpartofhischildhoodandtouchedbyhispromisetohismum. SomethingwetmyeyeswhenhejokedabouthistrainingyearsinKorea.Hedoubledhispracticepushinghimselfsohardastobecalledthetrainee练习生likegod.Hesaiditprobablymeantthetrainlikemad. Imighthavetriedbutnotashardashedid.WheneverIfeelImightbefallingItellmyselftoholdonuntilIfindmymoment.SaysYixing.Formethismomentmeansabetterselfinsideandalargerworldoutside.SoItoldmyselfIwouldalsomakeadifferenceifIcouldholdonforalongertime. LuckilyeveryYouthDayafterthatYixingwouldbethereonCCTVencouragingmewithhisprogress.WhensomeoneaskedhimwhatcolorhistraininglifewasYixingsmiledIt'scolorless.Idon'tknowwhatcoloreffortis. Buteffortpays.Nothe'sstandingattheAsianCultureCarnivalandIknowheislookingforwardtosomethingevenbigger. 1Whenthewriterjustmovedtothecityhe. A.enjoyedhisnewschoollife B.hadahardtimeathisnewschool C.stoodoutsidetheclassroom D.wantedtogobacktothecountryside 2ZhangYixingwascalledthetraineelikegodbecause. A.hekepthispromisetohismum B.hepushedeverythingawayfromhim C.hewasreallygoodattellingjokes D.hespentsomuchtimeinpracticing 3Thewritermainlywantstotellusthat. A.sometimespeoplechoosetolivealifewithoutcolor B.wecanmakeadifferenceifweworkhardenough C.greateffortcanmakeyouagreatsingeranddancer D.schoollifecanbefullofcolorsifwereadmorebooks 4Wecaninfer推断thatthewriter. A.isreadyforatriparoundtheworld B.isleavingtosinganddance C.isexpectingabetterfutureforhimself D.iswritingabookabouthimself
两根同样长的铁丝一根铁丝做成长宽高分别是5cm4cm3cm的长方体框架铁丝没有多余另一根做成最大的正方体框架这个正方体棱长是厘米．
运用出入相补的方法对图形进行转换图形的总面积没变．判断对错
MissChenmydearEnglishteacheroftenencouragesmethechallengesinmystudy. A.face B.faces C.facing D.toface
You'vebeenhereinChinaforafewdaysandyoumaynoticethatChinesepeoplecansometimesbeverydirect.Butdon'tbefooledintothinkingyoucan1anythingyouliketothem.Hereareafewthingsforeigners2Chinashouldneversay. Haveyoubeenonvacation?Youlooksotanned晒黑的! WhilemanypeopleintheWestgrowupwiththeideathatdarkskinisasignofbeautythisisnottrueinChina.Thatexplains3umbrellasarejustascommononsunnydaysastheyareonrainydayshere. IreallyloveChinabut… Don'tfinishthatto4.Noplacecanbeperfect.It'sfineifyousaysomethingimpoliteaboutyour5countrybutdon'tdoitaboutsomeoneelse's.Thisdoesn'tjusthappeninChinabutit'sfairtosaytheChinesepeopleshowmorelovetotheircountry. IthinkChinesefoodisthebestfoodintheworld. What'sthat?AseveryoneinChinashouldalreadyknowthissayingthatyouloveChinesefoodislikesayingthatsugaris6oriceiscold.It'swon'thurtanybodybuttheymaythinkyouknow7abouttheirfoodculture.SincetherearemanydifferentkindsofChinesefooditsoundsbettertotalkaboutthelocalfoodthatyoulikemost. Keeptheminmindand8yourstayinChina!
天冷了请把外套穿上.完成译句 It'sgettingcold.Pleaseyourcoat.
根据如图实验装置图回答问题． 1写出图中带有标号的仪器名称ab． 2实验室用加热氯酸钾和二氧化锰混合物制取氧气的化学方程式为若制取并收集较纯净的氧气应选用的装置为填字母． 3实验室用石灰石和稀盐酸制取并收集二氧化碳应选用的装置为填字母将二氧化碳气体通入盛有紫色石蕊溶液的试管中观察到的现象是．
60.TheFoxNewsreviewmentionedthefirstpartysceneinthefilmto. A.revealthefactthatNickwantstoknowmoreaboutGatsby B.showtheversionofRhapsodyinBluematchesthefilmwell C.provethatthedirectorisgoodatcombiningvisualandmusic D.convinceusthatthefirstsceneisperfectlyshotbythedirector 61.AccordingtoTimeMagazinewhatdidBazLuhrmanndotomakethefilmasuccess? A.Headaptedthestoryinthenovelashewished. B.Hemadethefilmmorepowerfulthanthebook. C.Hemixedhisstylewiththeeleganceofthebook. D.Hechangedthestorytomeethisownstyle. 62.WhichofthefollowingcanbeusedtodescribeGatsby? A.Faithfulandwarm﹣hearted. B.Charmingandprofessional. C.Selfishandcharming. D.Mysteriousanddevoted.
有一包白色固体粉末可能含有CuSO4Na2SO4NH42CO3BaCl2NH4ClKCl中的一种或几种．现做如下实验 根据上述实验现象判断 1白色固体中一定不含一定含有可能含有． 2写出①中化学反应方程式． 3写出②中化学反应方程式．
Theworsttimetolookforajobiswhenyoufeeldesperateandmusthaveanewoneimmediately.67Ifyouarenotinneedofanimmediatecareerchangeherearewaysyoucanimproveyourlong﹣termcareerprospectstoday Identifyatleasttwodifferentroles.Youdonothavetobequalifiedforthesepositionstodaynordotheyhavetoexistinyourcompany.Howevertheserolesshouldberelatedtoyourcurrentskillset.Theyarecareeroptionsthatlookinteresting.68Paycloseattentiontowhatappealstoyouandwriteitdown.Thiswillgiveinsightintoyourmotivationsandtargets. Subscribetoacareerspecificmagazine.Knowledgeispowerintheworkplace.Allbusinessesmuststayrelevanttotheircustomersinordertowinthecompetitionsandincreaserevenue收益.Readingaboutindustrytrendsadvancementsandsuccessstorieskeepsyouintouchwithmarketconditions.Thisinformationallowsyoutoseewhichcompaniesandprofessionalsareleadingthepack.Youcanfollowtheirexamplesinyourownworkplace. 69 Doexceptionalwork.Inanyrolethereisawaytoperformatyourbest.Lookforwaystodeliveratopperformance.Showupearlybeflexibletonewassignmentshaveapositiveattitudecooperatewithotherdepartmentspayattentiontothelittledetails. Beprofessionallycurious.Talktopeopleabouttheircareers.Learnmoreabouthowsuccessismeasuredinotherrolesdepartmentsandcompanies.Askpeopletheirthoughtsondifferentindustries.70Peoplehirepeople.Youneverknowwhatconnectionsmayberelevantwhenyoustartyournextjobsearchsodevelopahabitofmakinggoodconnectionsnomatterwhereyougo.Takethetimetolearnaboutothersandbehelpfulwhenyoucan. Asinallthingsinlifegettinginfrontofadifficulttaskearlyisalwayslessstressfulthanreactingtoacareersurprise.Changingjobsistobeexpected.Nomatterhowsecureyoufeeltodaythetimewillcomewheneitheryouoryouremployerdecideitistimetochange.
Sarawaslateforschoolbecauseoftheheavyrain.对划线部分提问 Saralateforschool?
水是人类宝贵的自然资资源与人类的生生活密切相关． 1为迎接在天津举行的全运会市民们积极为“美丽天津绿色全运”做贡献琳琳同学对海河的水样进行了相关研究可以采用来测定海河水的酸碱度．自制简易净水器净化海河水其中活性炭起到和过滤的作用．日常生活中为了降低水的硬度常采用的方法是． 2二氧化氯ClO2可用作自来水的消毒剂工业上用氯酸钠NaClO4和盐酸反应制取二氧化氯其反应的化学方程式为2NaClO3+4HCl═2ClO2↑+Cl2↑+2X+2NaCl．其中X的化学式为二氧化氯中氯元素的化合价为． 3如图为甲乙丙三种物质的溶解度曲线示意图根据图冋答 ①交点P的含义是． ②t2℃时将30g甲物质放入到50g水中充分搅拌所得溶液的溶质质量分数是．计算结果保留小数点后1位数字 ③将t3℃时甲乙丙三种物质的饱和溶液分别降温到t1℃所得溶液仍为饱和溶液的是此时溶质质量分数由大到小的顺序是．
WhenTimwasaboyhemetagirlnamedRose.TheybecameclosefriendsbecausetheybothdreamtofgoingtoWonderland.Theypromisedtoeachotherthatonedaytheywouldbuildahousethere. Beforelongtheygotmarriedandmovedtotheoldhousewheretheyfirstmet.TheylivedahappylifethereanddecidedtosavemoneyfortheirdreamtoWonderland.Butlifewasn'teasy.Yearafteryeartheyalwayshadtospendtheirfundonmorepressing迫切的needs.SadlyWonderlandremainedadreamwhenRosedied. LivinginthehousealoneTimmissedRosesomuchandwouldoftenthinkofthedreamtheyonceshared.Onedaythe78﹣year﹣oldmanmadeuphismind.Heboughtthousandsofballoonstohelphishouseflyinthesky.ThenhestartedflyingtoWonderland. OnthejourneyTimmetachildDanandinvitedhimin.Somethingexcitinghappened.Luckyatalkingdogjoinedin.TheyfoughtagainstabadmanandsavedKrisabirdwhocouldn'tfly.Withthehelpoftheflyinghousetheycontinuedtheirjourney. IntheendTimrealizedhisdream.TogetherwithhisnewfriendshelandedhishouseatWonderland. 1wasTim'swife. A.Lucky B.Kris C.Rose D.Dan 2TheunderlinedwordfundinParagraph2isclosestinmeaningto. A.life B.money C.house D.children 3Thepassageiswrittenintheorderof. A.space B.time C.feelings D.subjects 4Thebesttitleofthepassagemaybe. A.FlytoWonderland B.AnExcitingTrip C.SharetheSameDream D.Anoldhouse
﹣﹣﹣Excusemecouldyoutellme? ﹣﹣﹣Sure.BusNo.4willtakeyourightthere. A.howcanIgettothezoo B.howIcangettothezoo C.whencanIgettothezoo D.whenIcangettothezoo
Tomismybestfriend.Ioftenplaybasketballwith. A.he B.his C.him D.himself
ToApologizeorNottoApologize Whydifficult? Whenwedowrongtosomeoneweknowevennot41wearegenerallyexpectedtoapologizesoastoimprovethesituation.Butwhenwe'reactingasleadersthecircumstancesare42.Theactofapologyiscarriedoutnotmerelyatthelevelofthe43butalsoattheleveloftheinstitution.Itisaperformanceinwhicheverywordorexpression44astheybecomepartofthepublicrecord.Refusingtoapologizecanbesmartoritcanbestupid.Soreadinesstoapologizecanbeseenasasignofstrongcharacterorasasignofweakness. Whynow? Thequestionofwhetherleadersshouldapologizepubliclyhasneverbeenmore45.DuringthelastdecadeorsotheUnitedStatesinparticularhasdevelopedanapologyculture﹣apologiesofallkindsandforallsortsofwrongdoingsaremadefarmore46thanbefore.Morenewspaperwritershavewrittenaboutthegrowingimportanceof47apologies.Meanwhilemoreandmorearticlesadvicecolumnsandradioandtelevisionprogramshavesimilarlydealtwiththesubjectof48apologies.Althoughtheyarenotcarriedoutinthepublicplacewecan'tneglecttheimportanceofthisperformance. Why49? Whydoweapologize?Whydoweeverputourselvesinsituationslikelytobedifficultembarrassingandevenrisky?Leaderswhoapologizepubliclycouldbeaneasytargetfor50.Theyareexpectedtoappearstrongandcapable.Andwhenevertheymakepublicstatementsofanykindtheirindividualandinstitutionalreputationsareindanger.Clearlythenleadersshouldnotapologizeoften.Foraleadertoexpressapologythereneedstobeastrong51.Leaderswillpubliclyapologizeifandwhentheythinkthecostsofdoingsoarelowerthanthecostsofnotdoingso. Whyrefuse? Whyisitthatleaderssooftentryeverymeansto52apologiesevenwhenapublicapologyseemstobeinorder?Theirreasonscanbeindividualorinstitutional.Becauseleadersarepublicfigurestheirapologiesarelikelytobepersonallyuncomfortableandeven53risky.Apologiescanbesignalsforadmittingmistakesandmistakescanbeindicationofjobinsecurity.Leadersmayalsobeafraidthat54ofamistakewilldamageordestroytheorganizationforwhichtheyareresponsible.Therecanbegoodreasonsforhangingtough硬撑intoughsituationsasweshallseebutitisahigh﹣risk55. 41.A.immediately B.intentionally C.occasionally D.accidentally 42.A.simple B.ridiculous C.abnormal D.different 43.A.individual B.company C.family D.society 44.A.conflicts B.matters C.appeals D.deceives 45.A.urgent B.possible C.necessary D.simple 46.A.interestedly B.patiently C.frequently D.hopefully 47.A.faithful B.trusty C.immediate D.public 48.A.sincere B.acceptable C.private D.positive 49.A.bother B.reduce C.regret D.ignore 50.A.promotion B.criticism C.appreciation D.identification 51.A.personality B.will C.reason D.desire 52.A.attempt B.involve C.commit D.avoid 53.A.financially B.professionally C.academically D.physically 54.A.avoidance B.admission C.involvement D.elimination 55.A.fulfillment B.statement C.occupation D.strategy
在52的后面加上一个百分号与原数相比
Wehavewiderinourvillagesowecangooutmoreeasilynow. A.houses B.roads C.schools D.hospitals
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