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已知函数f(x)=(x﹣1)3+2,数列{an}为等比数列,an>0,且a1009=e,利用课本中推导等差数列前n项和的公式的方法,则f(lna1)+f(lna2)+…+f(lna2017)=( ...
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高二上学期数学《》真题及答案
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已知x>0y>0xaby成等差数列xcdy成等比数列则的最小值为
1
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4
8
已知abc成等比数列则二次函数fx=ax2+bx+c的图象与x轴交点个数是
0
1
2
0或1
定义在-∞0∪0+∞上的函数fx如果对于任意给定的等比数列{an}{fan}仍是等比数列则称fx为保
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③④
①③
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{an}是等比数列下面四个命题中真命题的个数为①{a}也是等比数列②{can}c≠0也是等比数列③也
4个
3个
2个
1个
若abc成等比数列则函数fx=ax2+bx+c的图象与x轴交点的个数为.
定义在-∞0∪0+∞上的函数fx如果对于任意给定的等比数列{an}{fan}仍是等比数列则称fx为保
已知数列{an}的前n项和Sn=3n+kk为常数那么下述结论正确的是
k为任意实数时,{a
n
}是等比数列
k=-1时,{a
n
}是等比数列
k=0时,{a
n
}是等比数列
{a
n
}不可能是等比数列
已知x>0y>0xaby成等差数列xcdy成等比数列则的最小值__________
.定义在-∞0∪0+∞上的函数fx如果对于任意给定的等比数列{an}{fan}仍是等比数列则称fx为
①②
③④
①③
②④
已知x>0y>0xa1a2y成等差数列xb1b2y成等比数列那么的最小值是.
已知数列的前n项和那么数列
是等差数列但不是等比数列
是等比数列但不是等差数列
既是等差数列又是等比数列
既不是等差数列也不是等比数列
不相等的三个正数abc成等差数列并且x是ab的等比中项y是bc的等比中项则x2b2y2三数
成等比数列而非等差数列
成等差数列而非等比数列
既成等差数列又成等比数列
既非等差数列又非等比数列
等比数列{an}中a1=2a8=4fx=xx-a1x-a2x-a8f′x为函数fx的导函数则f′0=
0
2
6
2
9
2
12
.已知函数fx是定义在R.上的不恒为零的函数且对于任意实数xy满足f2=2fxy=xfy+yfx考查
定义在-∞0∪0+∞上的函数fx如果对于任意给定的等比数列{an}{fan}仍是等比数列则称fx为保
①②
③④
①③
②④
已知abc成等比数列则二次函数fx=ax2+bx+c的图象与x轴交点个数是
0
1
2
0或1
互不相等的三个正数x1x2x3成等比数列且点P1logax1logby1P2logax2logby2
等差数列,但不成等比数列
等比数列而非等差数列
等比数列,也可能成等差数列
既不是等比数列,又不是等差数列
已知a1=2点anan+1在函数fx=x2+2x的图象上其中n=123证明数列{lg1+an}是等比
已知x>0y>0xaby成等差数列xcdy成等比数列则的最小值是.
0
1
2
4
定义在-∞0∪0+∞上的函数fx如果对于任意给定的等比数列{an}{fan}仍是等比数列则称fx为保
①②
③④
①③
②④
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Luckymakesabigdtome.
8分Kids'FleetSummerDayCamp Summercampisalotoffunwhenyou'reaKids'FleetCamper!Kids'Fleetisanexcitingandfun﹣filledSummerDayCampwithrockclimbinggolfingswimmingcreativeactivitiesandoutdoorentertainment! Kids'FleetSummerDayCamprunsforselectweeksduringthesummer.PleasecheckbackinFebruary2016fordatespricesandinformationforKids'FleetSummerDayCamp2016. Registration登记: Begins:March72016 Need:﹩100deposit定金andcompletedRegistrationForm 2016CampAgeRequirements:6﹣14yearsoldchildren InPerson:Firstcomefirstserveregistrationservice Mailingisanoption选择: 720ProudfootLane LondonONN6H5G5 Ifyouhaveanyquestionspleasecall: 519﹣472﹣9310x233RoseTucker﹣CampManager WhatdidKids'FleetParentsfrompastyearshavetosayaboutKids'FleetSummerDayCamp? Mysonthoughtthatthecamphadjustthefightamountofactivitiestokeepthechildreninterested.Therockclimbinggolfingaswellastheoutdooractivitiesandswimmingwereperfect.Hewasveryfiredbutinagoodway.MysonwantstoreturnnextyearandIwillrecommend推荐thiscamptoothers. ﹣Mrs.White Ithinkthisisoneofthebestdaycampsifnotthebestthatmychildrenhavetakenpartha.Thepeopleinchargeofthecamparewarm﹣heartedandfriendly.Theprogramisexcellentanditistheonlycampthattheyaskustogobackto. ﹣KristinandDoug Mychildrenhadanexcellenttimeatyourcamp.Iwasveryimpressedwithbothyourfriendlyhelpfulstaffandtheexcellentwaythattheentirecampwasorganizedandrun.IMilrecommendittomyfriendsandcallconsidernextyear! ﹣JosephMcRae Oneofthebestorganizedsummercampswe'veeverexperienced.I'mgladthatmychildwasinasaferesponsibleandfunenvironment. ﹣GeorgeKerhoulas 29.Togetmoreinformationaboutthecampyoucan. A.pay﹩100inadvance B.callthemanagerofthecamp C.sendane﹣marltothecamp D.askregistrationservicefirst 30.Whatisparents'attitudetothecamp? A.Favorable. B.Uncaring. C.Doubtful. D.Negative. 31.Itcanbelearnedfromthelastpartofthetextthat. A.Kristinthoughtthecampwasthebestcampintheworld B.JosephMcRaehadagoodtimeatthecamplastyear C.Mrs.White'ssonmayattendthecampin2016 D.GeorgeKerhoulasthoughtsomeactivitiesweredangerous 32.Wheredoesthistextprobablycomefrom? A.Asciencefiction. B.Astudent'snewspaper. C.Asportsmagazine. D.Atravelbook.
6分HowandwhendidAustraliabegin?ItisbelievedthatAustralianhistorybeganattheendoftheeighteenthcentury.AfterseveralcenturiesofEuropeanvoyaginginthesouthernoceanstheEnglishnavalofficerJamesCooksailedtheeasterncoastin1770nameditNewSouthWalesandtookpossessionofitinthenameofhisking.WithintwentyyearstheBritishgovernmentsentateamofexplorerstosettleinNewSouthWales.On26January1788itscommanderArthurPhillipbegantoruleovertheeasternhalfofthecountry.SeveralthousandofficerssoldiersofficialsandcriminalswhocameashorefromtheelevenshipsoftheFirstFleetanchored停泊intheportofSydney.Theypreparedthewayforlaterimmigrantswhospreadoutoverthecontinent. ThisisastoryofasleepinglandbroughttolifebyEndeavourthenamegiventoCook'sshipandthequalitygiventothosewhofollowedhim. Thenewcomersbroughtwiththemdomesticanimalsplantsandtools.Theyalsobroughtwiththemnewideas.ThataccomplishmentinturnshapedwhatAustraliaisnow. ~33.TheeasterncoastofAustraliawasnamedNewSouthWalesin1770.Whodidit? A.JamesCook. B.ArthurPhillip. C.GeorgeWashington. D.WilliamShakespeare. 【考点】历史文化类阅读 【分析】本文属于说明文阅读作者通过这篇文章主要向我们描述了澳大利亚的历史介绍. 【解答】A.细节理解题.根据第一段theEnglishnavalofficerJamesCooksailedtheeasterncoastin1770nameditNewSouthWalesandtookcontrolofitinthenameofhisking可知澳大利亚东部海岸于1770被命名为新南威尔士是杰姆斯库克做的故选A. 【点评】此类题型主要考查学生的细节理解和推理判断能力.细节理解题是针对文中某个细节某句话或某部分具体内容设置问题所以在做细节理解题时要结合原文和提干有针对性的找出相关语句进行仔细分析再结合选项选出正确答案.在做推理判断题时不要以个人的主观想象代替文章的事实要联系上下文根据文章事实进行合乎逻辑的推理判断. 【备注】1#1#1#A 34.AccordingtothispassagetheBritishgovernmentsentateamofexplorerstosettleinNewSouthWaleswithinyears. A.twelve B.twenty C.sixteen D.eighteen 35.ArthurPhillipinthispassageisreferredtoaswhobegantoruletheeasternhalfofthecountryin1788. A.anarmyofficer B.arichbusinessman C.apoorfarmer D.auniversitystudent.
IritmeansIfixitup.
15分Thereweretwoguyswholikedtoexploreeverything.Onedaythesetwomenweregoing61hikewhentheycameuponanoldabandonedwell.Curiousaboutitsdepththeythrewasmallstoneintothewelland62waitforthesoundofitstrikingthebottombuttheyheardnothing.Theywentandgotabiggerrock63throwitinandwaited.Stillnothing.Theysearchedtheareaforsomething64largeandfoundarailroadtie.Withgreat65difficultthetwomencarriedittotheopeningandthrewitin.Whilewaitingforittohitthebottomagoat66suddenrushedbetweenthemandjumpedintothehole! Theguyswerestillstandingtherewith67astonishlooksupontheirfacesfromtheactionsofthegoat68amanwalkeduptothem.Heaskedthem69theyhadseenagoatanywhereintheareaandtheysaidthatonehadjustjumpedintothewellinfrontofthem!ThemanrepliedOhno.Thatcouldn'tbemygoat.Minewastied70arailroadtie. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
Whatwoulditbeliketobeb?Itmeansyoucan'tseeanything.
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8分Aratlookedthroughacrackinthewalltoseethefarmerandhiswifeopeningapackage.Whatfoodmightitcontain?Hewasalarmedtodiscoverthatitwasarattrap捕鼠夹. Goingbacktothefarmyardtheratgaveawarning:Thereisarattrapinthehousearattrapinthehouse!Thechickenraisedherheadandsaid:ExcusemeMrRatIcantellthisisabigconcerntoyoubutitisofnobusinesstome.Icannotbebotheredwithit. Theratturnedtothepigandtoldhim:Thereisarattrapinthehousearattrapinthehouse!IamsoverysorryMr.RatsympathizedthepigbutthereisnothingIcandoaboutitbutpray.Iwillmakesurethatyouareinmyprayers. Theratturnedtothecow.ShesaidLikewowMr.Rat.Arattrap.Iamingravedanger.Duh? Sotheratreturnedtothehouseheaddownanddejectedtofacethefarmer'srattrapalone. Thatverynightasoundwasheardthroughoutthehouselikethesoundofarattrapcatchingitsprey猎物.Thefarmer'swiferushedtoseewhatwascaught.Inthedarknessshedidnotseethatitwasapoisonoussnakewhosetailthetraphadcaught.Thesnakebitthefarmer'swife. Thefarmerrushedhertothehospital.Shereturnedhomewithafever.Noweveryoneknowsyoutreatafeverwithfreshchickensoupsothefarmertookhishatchet短柄斧tothefarmyardforthesoup'smainingredient. Hiswife'ssicknesscontinuedsothatfriendsandneighborscametositwithheraroundtheclock.Tofeedthemthefarmerkilledthepig. Thefarmer'swifedidnotgetwell.Shediedandsomanypeoplecameforherfuneralthatthefarmerhadthecowkilledtoprovidemeatforallofthemtoeat. Sothenexttimeyouhearthatsomeoneisfacingaproblemandthinkthatitdoesnotconcernyourememberthatwhenthereisarattrapinthehousethewholefarmyardisatrisk. 25.TheunderlinedworddejectedinParagraph5isclosestinmeaningto. A.disappointed B.surprised C.confused D.doubtful 26.WhichofthefollowingstatementsisTRUEaccordingtothearticle? A.Thechickenshowedgreatconcernfortherat. B.Thepighelpedtheratgetridofthetrap. C.Thecowdidn'tcareaboutwhattheratsaid. D.Thesnakewaskilledafterbeingcaughtinthetrap. 27.Wecanconcludefromthearticlethat. A.thefarmer'swifegotgoodtreatmentinthehospital B.thefarmerregrettedsettinguptherattrap C.theratwasverywiseinavoidingthetrap D.noneoftheotheranimalsfeltthreatenedbytherattrap 28.Whatmessagedoesthestoryintendtoconvey? A.Weshouldmindourownbusiness. B.Everythingisrelatedtosomethingelse. C.Helpingothersisalwaysavirtue. D.Weshouldtreatanimalsinafriendlyway.
Ican'tusemyhandsorwalkeasy.
Iamonlyabletohaveadoghelperbecauseofyourkind.
LuckyisverycandknowsmanyEnglishwords.
因式分解x2+x2+x2+x+
Normalthingslikeansweringthetelephoneoropenthewindowsaredifficultforme.
10分TodriveoutyourBackPain Isyourbackbotheringyouandareyouwonderinghowtogetridofyourhackpain?IfthephraseOuchmyback!isaregularpartofyourlifeyou'renotalone:65millionAmericanssufferfrombackpain.36 1.StandBetter Standingforlongperiodscanbestressfulonyourlowerback.Ifyouhavetostandforworktryplacingonefootonastoolorotherlowobjects.37Thiswillhelptakethepressureoffyourlowerback.Wearingcushionedshoesorstandingonathickrubbermatcanalsohelprelievepressurewhenyouhavetostandforlonghours. 2.StartExerciseGradually 38Butifyou'vebeeninactiveforawhilestartslowly.Beginwithalow﹣impactexercisesuchaswalkingstationarybikingorswimmingforabout30minutesaday.Addinggentlestretchingoryogamayalsohelpyourmuscles. 3.SitComfortably Ifyourjobrequiresyoutositforlongperiodsmakesureyourchairhasastraightbackanadjustableseatandarmrests.39Ifyouneedextrasupportplacearolledtowelbehindthelowerpartofyourback.Restingyourfeetonalowstoolcanalsohelpeasebackpainwhensitting. 4.ChoosetheBestSleepPosition Sleepingonyoursideisthemostcommonsleepingposition.Placingasmallpillowbetweenyourkneeshelpskeepthebackinagoodposition.Ifyoumustsleeponyourbacktryusingapillowunderyourknees.Avoidsleepingonyourstomachasthiscanmakebackpainworse. 40 Carryingextraweightonyourbodymeansmoreworkforyourlowerbackmuscles.Thisisespeciallytrueiftheextrapoundsarearoundyourwaist.Theheavieryouarethemoreimpactthereisonyourbackwitheachstep.Losingweightcanalsohelpprotectthemusclesandjointsinyourkneesandhips. A.Thenchangefeeteverysooften. B.Don'tpushwithstraightarms. C.Yourworkstationcanaffectyourback'shealth. D.KeepYourWeightDown E.Somepeopleprefermoresupportthanothers. F.Herearesomeideasforyoutopreventthepain. G.Exerciseisagreatwaytokeepyourbackhealthy. 36. 37. 38. 39. 40.
在同一直角坐标系中画出下列函数的图象.y=-2x2y=-2x-32y=-2x+32并指出它们的开口方向对称轴和顶点坐标.
25分你班将于12月30日晚上7点在学校礼堂auditorium举行新年英语晚会.假设你是班长请你根据以下要点用英语在班级QQ群里发一则通知布置相关事宜.内容应包括: 1.每个同学准备一个英语节目 2.积极参加游戏 3.做文明观众… 注意: 1.词数100左右 2.开头和结尾已为你写好. Boysandgirls . That'sall.Thankyou.
Closingdoorisdifficultforme.
IloveanimalsandIwase abouttheideaofhavingadog.
因式分解 8a2+4ab+2a
ShetalkedtoAnimalHelpersaboutgettingmeaspecialtraindog.
因式分解 a+ba-b-2b3a-5b
8分TeddyBear Canyoubearit?Thefamousteddybearismorethan100yearsoldandgotitsnamefromaUnitedStatespresident. In1902PresidentTheodoreTeddyRoosevelttookatriptotheAmericanSouthtohelpworkoutalanddisagreementbetweenMississippiandLouisiana.Whiletherethepresidentwenthuntingforbears. Dayspassedwithnoluckforthepresidentbutlotsofgoodluckforthebears.Finallyhisguidescaptured捕获abearandofferedtoletthepresidentshootitsohewouldn'thavetogohomeempty﹣handed. Rooseveltflatly断然地refused.Hethoughtitwouldbeunfairandcruel. Whenwordofthepresident'sdecisiongotoutacartoonistforTheWashingtonStarnewspaperdrewapictureofthebearandRooseveltholdinguphishandtosayNo.Thecartoonwasseenalloverthecountrymakingthepresidentwhowasalreadypopularahero. Meanwhile同时theownerofasmallstoreinNewYorkaskedhiswifetomakeatoybearforsale.HedisplayeditinhiswindowwithacopyofthecartoonandasignthatsaidTeddy'sBear. ThatbearandmanyotherslikeitsoldbigespeciallyafterPresidentRooseveltgavehisofficialpermissionforhisnametobeused.FinallytheletterswasdroppedandTeddy'sBearbecamesimplytheteddybear. Sothebearthatyou'vesleptwithisreallyapartoftheUShistory. 21.AccordingtothetextwhatmadeTheodoreRosseveltahero? A.Beingapopularpresident. B.Refusingtoshootacapturedbear. C.Settlingalanddisagreement. D.Beingdrawninagreatcartoon. 22.Teddybearsbecamepopulartoysbecause. A.theywerenamedafterthepresident B.bearswereanimalsforhuntingatthetime C.peoplelikedthestoryofthepresidentandthebear D.peoplethoughttheycouldsaveabearbybuyingone 23.Whatwouldbethebesttitleforthetext? A.ThePopularityofTeddyBearB.TheOr/ginofTeddyBear C.ThePresidentandTeddyBearD.TheCartoonandTeddyBear 24.Howisthistextorganized? A.Inorderoftime. B.Inorderofimportance. C.Bylistingcausesandeffects. D.Bypresentingaproblemanditssolution.
因式分解9a2b3-12ab4+15ab5
因式分解 xy-1+1-y
因式分解 x8-1
因式分解-2x3+12x2y2-18xy4
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