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已知随机变量ξ服从正态分布N（μ，σ2），若P（ξ＜2）＝P（ξ＞6）＝0.15，则P（2≤ξ＜4）等于（ ）
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高二下学期数学《》真题及答案
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已知随机变量ξ服从正态分布N1σ2Pξ＜4＝0.84则Pξ＜－2＝
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已知随机变量X.服从正态分布N.2σ²且P.0≤X.≤2＝0.3则P.X.＞4＝_____.
设随机变量ξ服从正态分布N34若Pξa＋2则a＝
4
3
2
1
已知随机变量ξ服从正态分布N.2σ2且P.ξ＜4＝0.8则P.0＜ξ＜2等于.
已知随机变量X.服从正态分布N2σ2PX≤4＝0.84则PX
设随机变量ξ服从正态分布N.29若P.ξ＞c+1=Pξ＜c﹣1则c=.
已知随机变量X服从标准正态分布在X=xx∈R条件下随机变量y服从正态分布Nx1则Y的密度函数fYy=
设随机变量X服从正态分布Nμσ2σ＞0Fx是X的分布函数随机变量Y=FX试求EX+Y
已知随机变量ξ服从正态分布N0σ2Pξ>2＝0.023则P－2≤ξ≤2＝
0.977
0.954
0.488
0.477
已知随机变量ξ服从正态分布N.2σ2P.ξ≤4=0.84则P.ξ≤0=
0.16
0.32
0.68
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已知随机变量ξ服从正态分布N.59若pξ＞c+2=pξ＜c﹣2则c的值为
4
5
6
7
已知随机变量ξ服从正态分布N0σ2Pξ＞2=0.023则P-2≤ξ≤2=
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设随机变量ξ服从正态分布N3σ2若Pξ＜2a﹣3=Pξ＞a+3则实数a的值为.
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随机变量ξ服从正态分布N.1σ2已知P.ξ＜0=0.3则P.ξ＜2=
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已知随机变量X.服从正态分布N.0σ2且P.﹣2≤X≤0=0.4则P.X.＞2=
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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.
25分母亲节将至兰陵四中组织全校学生进行此主题的英语演讲比赛.你很愿意参加请写一篇参加演讲比赛的演讲稿题目自拟.内容包括: 1对母亲的介绍 2描述和母亲的一次经历 3表达对母亲的感激 注意:1.词数:100左右 2.参考词汇:母亲节Mother'sDay.
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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.
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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.
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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.
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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.
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