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已知曲线y=aex+xlnx在点（1，ae）处的切线方程为y=2x+b，则（ ）
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高三下学期数学《》真题及答案
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阅读下面短文根据所给情节进行续写使之构成一个完整的故事.WhenIarrivedat6a.m.inthelargehospitalkitchenRosewasalreadycheckingnametagsonthetrays托盘.HiI'mJanet.'ItriedtosoundcheerfulalthoughIalreadyknewRose'sreputationforbeingimpossibletoworkwith.'I'mscheduledtoworkwithyouthisweek.'Rosestoppedwhatshewasdoingandpeeredoverherreadingglasses.Icouldtellfromherexpressionshewasn'tpleasedtosecastudentworker.'Whatdoyouwantmetodo?Startthecoffee?'Iasked.Rosecoldlynoddedandwentbacktocheckingnametags.Ifilledthe40﹣cuppotwithwaterandbeganmakingthecoffeewhenRoseyelled'That'snotthewaytomakecoffee.'Shesteppedinandtookover.NothingIdidpleasedher.Allmorninghereagleeyesmissednothingandhersharpwordshurt.TotallyexhaustedItrudgedthesixblockshomelatethatJuneafternoon.AsathirdyearuniversitystudentworkingmywaythroughschoolIhadneverbeforemetanyonelikeRose.FightingbacktearsIwrestledwithmydilemmaaloneinmyroom.'WhatshallIdo?'Theanswercaughtmecompletelybysurprise.IneededtoloveRose.WorkingwithRosethenextmorningIignoredthehurtfulremarksthrowninmydirectionanddidthingsRose'swayasmuchaspossible.AsIworkedIsilentlybegantosurroundRosewithawarmblanketoflove.Overthenextfewdaysanamazingthingbegantohappen.MyfocusshiftedfromwhatshewasdoingtomeandIstartedseeingRoseasthehurtingpersonshewas.Thenhericytensionbegantomeltaway.Throughouttherestofthesummerwehadnumerousopportunitiestoworktogether.Eachtimesheseemedtrulyhappytoseeme.Herbitternessgavewayasshestartedopeningup.AsIworkedwiththislonelywomanIlistenedtohersomethingnooneelsehaddone.Ilearnedthatshewasburdenedbyelderlyparentswhoneededhercareandherownhealthproblems.ThedaysslippedbyquicklyasIfinishedthelastseveralweeksofmysummerjob.Isoonwouldbereturningasafull﹣timeuniversitystudentandsaygoodbyetoRose.注意1.所续写短文的词数应为150左右2.应使用5个以上短文中标有下划线的关键词语3.续写部分分为两段每段的开头语已为你写好4.续写完成后请用下划线标出你所使用的关键词语.Paragraph1OnedaywhileIwasworkingaloneinoneofthehospitalkitchensRoseenteredtheroom.Paragraph2AlthoughIneversawRoseagainIstillrememberhervividly.
Neitherstyleofthinkingisbetterorworsethantheotherthey'rejustdifferentasProfessorAnkushChopraexplains.Tobeagreatartistmusicianorbig﹣picturethinkerholisticthinkingisimportant﹣it'saboutcontextandintuition直觉isimportant.Manycareerslikethoseinscienceorlawrewardanalyticthinkingwhichlooksatpartsandunitsandisspecificandlogical.Ofcoursethemostsuccessfulpeoplewillbeabletodobothkindsofthinkingthoughgenerallyholisticthinkinglinkedtocreativityismoredifficulttoteachthananalyticthinking. Sothosepeoplewhoareanalyticthinkerswillseeapriceof＄1.99bylookingatthesinglenumbersandwillprioritizethefirstnumberwhenitcomestoprice.Holisticthinkerstendtoviewallpricenumbersasawholeandarelesslikelytobeaffectedbythenine﹣endingpriceeffectLingjiangLoraTuPh.D.professorofmarketingatBaylorandastudy'sleadauthortoldPhys.org. Howeverthatthetypeofthinkingallowsholisticthinkerstoseethewholeratherthanthepartsgoesoutthewindowwhenthey'restressedordistracted分心的. Ourfindingssuggestthatregardlessofconsumers'thinkingstylenine﹣endingpricesaremostlikelytobeeffectiveinsituationsthatoveruseconsumers'resourcessuchaswhenshoppersaretime﹣pressuredatthecheckoutcounterordistractedbybackgroundmusicoroccupiedwithaninteractiveproductdemonstrationTusaid. Thisstudywasdonewiththeideathatmarketersshouldknowaboutthesedifferencesinthinkingstyleandkeeptheminmindwhenthey'repricingthingsfordifferenttypesofpeople.Butanyonewhobuysthingscanbenefittoobyfiguringoutwhatkindofthinkeryouareandthenkeepingthatinmindwhenthesignsshowsalewithaloudnoise!﹣andremindingyourselfthatnobodymakesthebestdecisionswhenthey'redistracted. 1Whichofthefollowingcanbethebestexampleofholisticthinking? A.OnlyifthewholethingmakessensecanJackconcentrateondetails. B.InAmericanshopsyoucanfindmanythingswithnine﹣endingprices. C.Jackkeptonworkingononethingandfinallyachievedgreatsuccess. D.Understandingeachparagraphleadstounderstandingthewholepassage. 2TheunderlinedwordprioritizeinPara.2mostprobablymeans. A.takenonoticeof… B.treat…equally C.thinkof…thetrickiest D.consider…themostimportant 3Accordingtothepassageaconsumershouldrememberthat. A.thenine﹣endingpricescanequallyaffectanytypeofconsumer B.pricingthingsfordifferenttypesofpeoplebenefitscustomers C.backgroundmusicisn'talwaystocreateapleasantatmosphere D.it'simpossibletoaffecthimevenifhe'sdistractedorstressed 4Fromthepassageweknowthat. A.differentthinkingstylescreatedifferentpricingsystems B.preferenceofpricingsystemcanindicatethinkingstyle C.holisticthinkingsomewhatoutweighsanalyticthinking D.bothstylesofthinkingcannotbebeneficialtoonecareer
某行业主管部门为了解本行业中小企业的生产情况随机调查了100个企业得到这些企业第一季度相对于前一年第一季度产值增长率y的频数分布表． 1分别估计这类企业中产值增长率不低于40%的企业比例产值负增长的企业比例 2求这类企业产值增长率的平均数与标准差的估计值同一组中的数据用该组区间的中点值为代表．精确到0.01 附≈8.602．
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ChinaisknownastheKingdomofBamboo.Morethan400speciesofbambooonethirdofallknownspeciesintheworldgrowinChina.China1leadtheworldintheamountofareaplantedwithbamboothenumberofbambootreesandtheamountofbamboowood2produceeveryyear. Theoldestbamboo3articleinChinawereunearthedfromtheremainsofaprimitivesocietythatexistedsome7000yearsagoin4isnowHemuduYuyaoCountyZhejiangProvince.AsearlyastheShangDynastyChinesepeopleusedthebambooformakingweaponssuchasbowsandarrows.Beforepaper5inventstripsofbamboowerethemostimportantwritingmediummorewidelyusedthansilk6theywerecheaperresistanttocorrosion腐蚀andmoreabundant.BamboohasthusplayedanimportantpartinthespreadanddevelopmentoftraditionalChineseculture. Bamboowas7closeconnectedwiththedailylivesofpeopleinancientChina.SuDongpoaliterarygiantoftheSongDynastysaidthatpeoplecouldnotlive8bamboo andpeopleofthetimeusedbamboo9makepaperhatsshoesandsoon.Atthattimeastodaybambooshootswereeatenasapopulardishbecauseof10theycrispnessandfreshsweettaste.Bambooshootsalsocontainvitaminssugarfatandprotein.
Hereallydidlooklikeatouristwithacameraaroundhisneckandabottleofsunscreenstickingoutofhisbag. Thefatmansatontheterrace草坪drinkinglemonadealittlebiteachtimeand1tolookatasmoothandshinycruisebrochure.Hissunglasses2hiseyesbutIknewhewasn'tlookingatthebrochurehehadn'tturneda3forthelasttenminutes. AsIbroughthimwhathehadorderedhecoughedupathankyouandlookedatme4.Itriednottostareatthetinyscaracrosshislefteyebrow. Iwalkedbackinsidewithmy5tray托盘shakingmyhead.Helooked6butIcouldn'tquiteplacehim. Thenit7me.Thecaraccident.The8strangerwhohelpedmeoutofmysmashedcar9beforeitexploded.I10backtohistable. Hewasgone. Imovedhissaucerandfoundhistipalongwitha11 Iamdeeply12toyou.ThenightofyourcaraccidentIwasonmywayto13ajewelrystore.Savingyour14broughtthingsbackinperspective看法.Inowliveanhonestlifethankstoyou.Godblessyou!Mr.D. Itrembled.ThenightofmycaraccidentIwas15foraninterviewinashadydanceclub.Seeinghumankindnessthroughhis16gestureturnedmylifearoundandbrought17backintomylife. I18thetipheleft.Amongtheone﹣dollarnoteswasa100﹣dollarnotewithapenmark19InGodWeTrustwhichfirstappearedonpapermoneyin1957. Isaidasilent20forhimandgotbacktoworksmiling. 1A.asking B.pretending C.refusing D.burning 2A.masked B.protected C.beautified D.comforted 3A.picture B.bottle C.page D.dish 4A.shyly B.worriedly C.fixedly D.briefly 5A.empty B.clean C.heavy D.new 6A.kind B.familiar C.sad D.puzzled 7A.attracted B.failed C.moved D.hit 8A.funny B.wealthy C.mysterious D.hungry 9A.even B.perhaps C.just D.long 10A.rushed B.inched C.struggled D.danced 11A.book B.card C.notice D.Poster 12A.committed B.attached C.guilty D.grateful 13A.rob B.visit C.help D.manage 14A.money B.face C.life D.Time 15A.waiting B.longing C.heading D.Preparing 16A.friendly B.heroic C.traditional D.Exciting 17A.happiness B.glory C.honesty D.faith 18A.dropped B.doubted C.weighed D.unfolded 19A.colouring B.underlining C.enlarging D.deleting 20A.prayer B.hello C.congratulation D.apology
LearntoManageYourTimeinCollege Acommonviewbothamongandofcollegestudentsisthattheyarealwaysshortonmoney.Whilethismaybetruemanycollegestudentsarealsoalwaysrunningshortonsomethingelsetime.1Hereareafewthingstoconsider Manageyouracademictime.2Consequentlyyouracademicworkshouldalwayscomefirstwhenitcomestoarrangingyourtimeinorderofimportance.Whenlookingatyourschedulefortheweekfigureoutwhatyouracademiccommitmentslooklike.Whattimedoyouhaveclasses?Howmuchhomeworkdoyouhavetodo?Whatassignmentsaredue?Whendoyouhavemajorexamsorquizzes? Manageyourpersonaltime.Itsanunrealisticexpectationtothinkthatyoucanstudygotoclassandworkalldayeveryday.3Makesuretoallowyourselftimetogotosomethingfunintheyardattendameetingforyourfavoriteclubandjusthangoutforanhourorsoatnightwithfriendsoverdinner.Doingthingsthatmakeyourpersonaltimemoreenjoyableandnottotallyfocusedonschool?canactuallyimproveyourproductivitywhenworkingonprojectslater. Keepyourhealthinmind.Whenpeople'sschedulesaretightoneofthefirstthingstogoissleep.Whileitmaybecommonamongcollegestudentsalackofsleepismorehurtfulthanyoumightthink.Itcanthroweverythingintodisorderyourmentalhealthyourphysicalhealthyourstresslevelandofcourseyourschedule.4 Useyourtechnology.Nothinghelpsacollegestudentstayorganizedmorethanagoodcalendar!SomestudentsusethecalendarsontheirphonesothersusethingslikeGoogleCalendarothersstillusetheclassicpaper﹣calendarmodel.5Justchangeandtryagain. A.Tryyourbesttokeeparoutineonaregularbasis. B.Rememberthatyourbrainneedstohaveabreaktoo. C.Ifwhatyou'reusingisn'tworkingforyoudon'tgiveup. D.Howcanyoubalanceyourtimewhenthereneverseemstobeenoughofit? E.It'simportanttorememberwhyyou'reincollegeinthefirstplacetograduate. F.Makingalistandthencrossingitemsoffastheyarecompletedcanbesatisfying. G.Takemomentstoplanoutthetimeforaweekyourhomeworksocialtimeandsleep.
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已知椭圆C的离心率为点在椭圆C上．直线l过点11且与椭圆C交于AB两点线段AB的中点为M． I求椭圆C的方程 Ⅱ点O为坐标原点延长线段OM与椭圆C交于点P四边形OAPB能否为平行四边形若能求出此时直线l的方程若不能说明理由．
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.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\划掉.修改在错的词下画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. Iusedtothinkcooperatingwasteoftimebutonethingchangesmymind.Onedaythescientificteacheraskedustodosomeresearchesandhandedintheconclusion.ThattookmelotsoftimetodotheresearchbutIstillcouldn'tfinishedit.SoItriedtocooperatewithothers.Wesharedourresearchesandthenmadethecompletelyconclusionsoon. SoIthinkcooperatingnotonlysavesourtimesbutalsohelpsustopromotethecommunicationwithothers.Althoughintheworldtodayveryfewthingscanbesuccessfullydonebyjustonepersoncooperatingcanbenefitfrombothorallsides.
TheAmericanHeartAssociationAHAsaysthattoomanypeoplearespendingfartoomuchtimeonchairsandcouches.BasedonexistingevidencewefoundthatU.S.adultsaresedentaryforaboutsixtoeighthoursadaysaidDeborahRohmYoungchairofAHApanelthatwrotethenewadvisory. AccordingtotheAHAgrowingevidenceshowsthatonitsownexerciseisn'tenoughtocancelouttheunhealthyeffectsofsittingforalongtime.RegardlessofhowmuchphysicalactivitysomeonegetslongsedentarytimecouldnegativelyinfluencethehealthofyourheartandbloodvesselsYoungexplained. Theexactmechanismsbehindtheeffectaren'tyetclear.Therearemanyimportantfactorswedon'tunderstandaboutsedentarytimeyetYoungsaid.Shestressedthatthetypesofstudiesavailableidentifytrendsbutdon'tprovecauseandeffect. Wedon'thaveinformationabouthowmuchsedentarybehaviorisbadforhealth﹣thebestadviceatthistimeisto‘sitlessandmovemoresheadded. Howmuchmore?AccordingtotheAHApeopleshouldtrytogetatleast30minutesofmoderatetovigorous剧烈的exerciseadaytoreachtherecommended150minutesofmoderateexerciseor75minutesofvigorousexerciseaweekThat'shealthierthantryingtocramtheirweeklyexerciseintooneortwodaysaccordingtothestatement. TherealrisksimplycomesdowntotheamountwesitwithouttherebeingatruemedicineormethodtocontroltheharmfuleffectssaidSteinbaumapreventivespecialistinheartdisease. Stillsocietyhasevolvedtoencouragesittingsheadded. Ourliveshavebecomefocusedaroundactivitiesrequiringustobestill﹣whetheritbetransportationourcomputersorthetelevisionorcomputerinourleisuretimeSteinbaumsaid.Sociologicallyinsteadofbeingactivetobeproductiveortohaveenjoymentourproductivityandfunoftenrequiresminimalphysicalactivities. 1WhatisthemainpurposeofthenewadvisorydeliveredbyAHA? A.Toadvisepeopletositlessandexercisemore. B.Toexplorethecauseandeffectofinactivebehavior. C.Toanalyzethelinkbetweenhearthealthandexercise. D.Toshowthegeneralsocialtrendofencouragingsilting. 2WhichofthefollowingwouldDeborahRohmYoungmostprobablyagreewith? A.Doingexerciseisofnobenefittothosecouchpotatoes. B.Sittingtoomuchisacontributingfactortoheartdiseases. C.Theexactcausebehindtheeffectoflong﹣timesittingisapparent. D.Thevitalthingforhealthisthetotalamountofweeklyexerciseyoudo. 3AccordingtoSteinbaumtheincreaseofsittingtimeis. A.abasicaspectofpromotingthequalityoflife B.arealriskthatcanberemovedbyvigorousexercise C.anunavoidableconsequenceofsocialdevelopment D.abigchangeinmodempeople'sconceptofhealth
某中学有初中学生1800人高中学生1200人．为了解学生本学期课外阅读时间现采用分层抽样的方法从中抽取了100名学生先统计了他们课外阅读时间然后按“初中学生”和“高中学生”分为两组再将每组学生的阅读时间单位小时分为5组[010[1020[2030[3040[4050]并分别加以统计得到如图所示的频率分布直方图． Ⅰ写出a的值 Ⅱ试估计该校所有学生中阅读时间不小于30个小时的学生人数 Ⅲ从阅读时间不足10个小时的样本学生中随机抽取2人求至少抽到1名高中生的概率．
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