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如图，下列图形是某些立体图形的平面展开图，说出这些立体图形的名称．
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如图所示是某些立体图形的展开图分别指出这些立体图形的名称
下面是两种立体图形的展开图.请分别写出这两个立体图形的名称
如图是某立体图形从三个不同方向看到的图形则这个立体图形是.
如图是一个立体图形的侧面积展开图单位cm求这个立体图形的表面积和体积．
操作题 如图1是一个由53个大小相同的小正方体堆成的立体图形从正面观察这个立体图形得到的平面图形
下面三幅图分别是什么立体图形的展开图请在括号里填出立体图形的名称并计算出这个立体图形的表面积．单位c
如图所示是一个立体图形的平面展开图尺寸如图所示.1这个平面展开图表示的立体图形是2若该立体图形的所有
如图左排的平面图形绕轴旋转一周可以得到右排的立体图形那么与甲乙丙丁各平面图形顺序对应的立体图形的编号
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如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
图29313是一个立体图形的三视图请写出这个立体图形的名称并计算这个立体图形的体积结果保留π.
如图所示是某些立体图形的展开图分别指出这些立体图形的名称
如图所示是某些立体图形的展开图分别指出这些立体图形的名称
如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
如图是某立体图形的三视图则这个立体图形的侧面展开图的面积是.结果保留π
一个立体图形由两个平面和一个曲面围成则这个立体图形可能是
正方体
棱柱
圆柱
圆锥
如图是某立体图形从三个不同方向看到的图形则这个立体图形是.
一个立体图形的三视图一般包括_____图_____图_____图它就是把一个立体图形转化为一个___
下面左侧图形为右侧立体图形的平面展开图左侧平面图形的面及边与立体图形的面及棱边相对应即平面图形上的数
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函数fx＝x2﹣3x+lnx在x＝处取得极大值．
如图是某几何体的三视图则其体积是
已知圆C过点且与直线相切 I求圆心C的轨迹方程 IIO为原点圆心C的轨迹上两点MN不同于点O满足已知证明直线PQ过定点并求出该定点坐标和△APQ面积的最小值．
设μ∈R函数fx＝ex+的导函数是f′x且f′x是奇函数若曲线y＝fx的一条切线的斜率是则该切点的横坐标是．
已知点Q﹣1mP是圆Cx﹣a2+[y﹣2a﹣4]2＝4上任意一点若线段PQ的中点M的轨迹方程为x2+y﹣12＝1则m的值为
8分Mycolortelevisionhasgivenmenothingbutaheadache.IwasabletobuyitalittleoverayearagobecauseIhadmyrelativesgivememoneyformybirthdayinsteadofalotofclothesthatwouldn'tfit.IletasalesclerkfoolmeintobuyingadiscontinuedmodelIrealizedthisadaylatewhenIsawnewspaperadvertisementsforthesetatseventy﹣fivedollarslessthanIhadpaidThesetworkedsobeautifullywhenIfirstgotithomethatIwouldkeepitonuntilstationssignedoffforthenightFortunatelyIdidn'tgotanychannelsshowingall﹣nightmoviesorIwouldneverhavegottentobed. ThenIstarteddevelopingaproblemwiththesetthatinvolvedstatic静电noise.Forsomereasonwhencertainshowsswitchedintoacommercialaloudnoisewouldsoundforafewseconds.GraduallythisnoisebegantoappearduringashowandtogetridofitIhadtochangetoanotherchannelandthenchangeitback.SometimesthistechniquewouldnotworkandIhadtopickupthesetandshakeittoremovethesound.Iactuallybegantobuildupmyarmmuscles肌肉shakingmyset. WhenneitherofthesemethodsremovedthestaticnoiseIwouldsithelplesslyandwaitforthenoisetogoaway.AtlastIendeduphittingthesetwithmyfistanditstoppedworkingaltogether.Mytriptotherepairshopcostme$62andthesetisworkingwellnowbutIkeepexpectingmoretrouble. 21.WhydidtheauthorsayhewasfooledintobuyingtheTVset? A.Hegotanoldermodelthanhehadexpected. B.Hecouldn'treturnitwhenitwasbroken. C.Hecouldhaveboughtitatalowerprice. D.Hefailedtofindanymovieshowsonit. 22.WhichofthefollowingcanbestreplacethephrasesignedoffinParagraph1? A.endedalltheirprograms B.providedfewerchannels C.changedtocommercials D.showedall﹣nightmovies 23.HowdidtheauthorfinallygethisTVsetworkingagain? A.Byshakingandhittingit. B.Byturningitonandoff. C.Byswitchingchannels. D.Byhavingitrepaired. 24.Howdoestheauthorsoundwhentellingthestory? A.Curious B.Anxious C.Cautious D.Humorous.
在△ABC中内角ABC的对边分别是abc满足a2+b2﹣c2tanB＝b2+c2﹣a2． I求角A Ⅱ△ABC的面积为求的值．
已知函数fx＝lnx﹣mxm∈R． I讨论fx的单调性 Ⅱ若方程fx＝0存在两个不同的实数根x1x2证明mx1+x2＞2．
8分Yourhousemayhaveaneffectonyourfigure.Expertssaythewayyoudesignyourhomecouldplayaroleinwhetheryoupackonthepoundsorkeepthemoff.Youcanmakeyourenvironmentworkforyouinsteadofagainstyou.Herearesomewaystoturnyourhomeintopartofdietplan. Openthecurtainsandturnupthelights.Darkenvironmentsaremorelikelytoencourageovereatingforpeopleareoftenlessself﹣consciouswhenthey'reinpoorlylitplaces﹣andsomorelikelytoeatlotsoffood.Ifyourhomedoesn'thaveenoughwindowlightgetmorelampsandfloodtheplacewithbrightness. Mindthecolors.Researchsuggestswarmcolorsfuelourappetites胃口.Inonestudypeoplewhoatemealsinablueroomconsumed消耗33percentlessthanthoseinayelloworredroom.Warmcolorslikeyellowmakefoodappearmoreappetizingwhilecoldcolorsmakeusfeellesshungry.Sowhenit'stimetorepaintgoblue. Don'tforgettheclock﹣﹣﹣ortheradio.Peoplewhoeatslowlytendtoconsumeabout70fewercalories卡路里permealthanthosewhorushthroughtheirmeals.Beginkeepingtrackofthetimeandtrytomakedinnerlastatleast30minutes.Andwhileyou'reatitactuallysitdowntoeat.Ifyouneedsomehelpslowingdownturnonrelaxingmusic.Itmakesyoulesslikelytorushthroughameal. Downsizethedishes.Bigservingbowlsandplatescaneasilymakeusfat.Weeatabout22percentmorewhenusinga12﹣inchplateinsteadofa10﹣inchplate.Whenwechoosealargespoonoverasmalleronetotalintake摄入jumpsby14percent.Andwe'llpourabout30percentmoreliquidintoashortwideglassthanatallskinnyglass. 1.Thetextisespeciallyhelpfulforthosewhocareabout. A.theirhomecomforts B.theirbodyshape C.housebuying D.healthydiets 2.Ahomeenvironmentinbluecanhelppeople. A.digestfoodbetter B.regaintheirappetites C.burnmorecalories D.reducefoodintake 3.Whatarepeopleadvisedtodoatmealtimes? A.Fatquickly. B.Playfastmusic. C.Usesmallerspoons. D.Turndownthelights. 4.Whatcanbeasuitabletitleforthetest?A.IsYourHouseMakingYouFat?B.WaysofServingDinnerC.EffectsofSelf﹣ConsciousnessD.IsYourHomeEnvironmentRelaxing?
在氧气充足条件下肿瘤细胞的能量供应仍主要依赖效率较低的糖酵解途径并产生大量乳酸．甘油醛﹣3﹣磷酸脱氢酶GAPDH是糖酵解途径中的一个关键酶下列关于糖酵解过程的说法不正确的是
25分假定你是李华计划和同学去敬老院nursinghome陪老人们过重阳节theDoubleNinthFestival.请给外教露西写封邮件邀她一同前往内容包括 1.出发及返回时间; 2.活动包饺子表演节目等. 注意1.词数100词左右; 2.可以适当增加细节以使行文连贯; 3.结语已为你写好. Lookingforwardtoyourreply. Yours LiHua.
函数fx＝x﹣3ex的单调递增区间是
6分ChooseYourOne﹣DayTours TourA﹣Bath&StonchengeincludingentrancefeestotheancientRomanbathroomsandStonehenge﹣￡until26Marchand￡39thereafter. Visitthecitywithover2000yearsofhistoryandBathAbbeytheRoyalCrescentandtheCostumeMuseum.Stonehengeisoneoftheworld'smostfamousprehistoricmonumentsdatingbackover5000years. TourB﹣Oxford&StratfordincludingentrancefeestotheUniversityStMary'sChurchTowerandAnneHathaway'shouse一32until12Marchand36thereafter. OxfordIncludesaguidedofEngland'soldestuniversitycityandcolleges.Lookoverthecityofdreamingspires尖顶formStMary'sChurchTower.StratfordIncludesaguidedtourexploringmuchoftheShakespearewonder. TourC﹣WindsorCastle&HamptonCourtincludingentrancefeestoHamptonCourtPalace﹣﹣£34untilMarchand£37thereafter. IncludesaguidedtourofWindsorandHamptonCourtHenryMill'sfavouritepalace.FreetimetovisitWindsorCastleentrancefeesnotincluded.With500yearsofhistoryHamptonCourtwasoncethehomeoffourKingsandoneQueen.Nowthisformerroyalpalaceisopentothepublicasamajortouristattraction.Visitthepalaceanditsvarioushistoricgardenswhichincludethefamousmaze迷宫whereitiseasytogetlost! TourD﹣CambridgeincludingentrancefeestotheTowerofSaintMarytheGreat﹣£33.until18Marchand£37thereafter. IncludesaguidedtourofCambridgethefamousuniversitytownandthegardensofthe18thcentury. 33.WhichtourwillyouchooseifyouwanttoseeEngland'soldestuniversitycity? A.TourAB.TourBC.TourCD.TourD 34.Whichofthefollowingtourschargesthelowestfeeon17March? A.WindsorCastle&HamptonCourt. B.Oxford&Stratford C.Bath&Stonehenge. D.Cambridge. 35.WhyisHamptonCourtamajortouristattraction? A.Itusedtobethehomeofroyalfamilies. B.Itusedtobeawell﹣knownmaze C.ItistheoldestpalaceinBritain D.Itisaworld﹣famouscastle.
已知过抛物线Cy2＝8x的焦点F的直线l交抛物线于PQ两点若R为线段PQ的中点连接OR并延长交抛物线C于点S则的取值范围是
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转座子是指一段可移动DNA片段可在同一染色体的不同位点或不同染色体之间发生转移．雄性不育植株不能产生正常功能的花粉但雌蕊发育正常．研究人员利用已知序列的Mu转座子对雄性不育玉米植株进行了系列研究． 1转座子插入可导致基因断裂发生突变利用雄性不育玉米植株Mo17和具有Mu转座子活性有相应的转移酶使转座子能移动的玉米植株进行了系列杂交实验最终获得育性恢复突变体无转移酶转座子不能移动用H表示Mu插入的染色体．突变体植株通过产生2种类型的花粉含h染色体的花粉败育含H染色体的花粉育性恢复．将该育性恢复突变体植株自交子代的育性表现为．进一步观察发现授粉16天后果穗上出现了种子致死现象且比例为50%则致死种子细胞中的染色体组成是． 2提取育性恢复突变体与的DNA进行比对仅突变体植株含有的特异片段即为再将其两端的碱基序列与玉米全基因组比对最终确定了导致雄性不育的基因rp16． 3进一步研究发现rp16基因决定育性的机理如图所示图中①表示②发生的场所是．由此可见花粉的育性是由控制的．据图推测Mu插入导致育性恢复的原因． 4显微观察发现正常发育的种子可清晰地观察到2﹣3层BETL细胞向籽粒输送营养物质的通道致死种子BETL细胞数量明显减少．据此推测1中的种子致死的原因． 5将上述育性恢复突变体与另一育性恢复突变体杂交发现无种子致死现象说明两种突变体导致育性恢复的基因是基因．
如图已知四棱锥P﹣ABCD的底面为直角梯形AD∥BC∠ADC＝90°且AD＝2BC＝2CDPA＝PB＝PD． I求证平面PAD丄平面ABCD II设∠PAD＝45°求二面角B﹣PD﹣C的余弦值．
已知角θ的顶点与原点重合始边与x轴正半轴重合终边过点P﹣12则tan2θ＝
在等差数列{an}中若前10项的和S10＝60且a7＝7则a4＝
已知F1F2是双曲线E﹣＝1的左右焦点点M在E上MF1与x轴垂直sin∠MF2F1＝则E的离心率为
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10分Trainingforamarathonrequirescarefulpreparationandsteadygradualincreasesinthelengthoftheruns.36buythebest﹣fittingbest﹣builtrunningshoesyoucanfind.Noonecansaywhichbrandwillworkbestforyouorfeelbestonyourfeetsoyouhavetorelyonyourexperienceandonthefeelofeachpairasyoushop.Whenyouhavefoundshoesthatseemrightwalkinthemforafewdaystodouble﹣checkthefit.37.Asalwaysyoushouldstretch伸展atleasttenminutesbeforeeachruntopreventinjuries. Duringthefirstweekdonotthinkaboutdistancebutrunfiveminuteslongereachday.38itiswisetotakeadayofftorest.Butduringthenextweeksetagoalofatleastamileandahalfperrun.39.Aftertwoweeksstarttimingyourself.40.Dependingonthekindofraceyouplantoenteryoucansetupatimetablefortheremainingweeksbeforetherace. A.Aftersixdays B.Foragoodmarathonrunner C.Beforeyoubeginyourtraining D.Witheachdayincreasethedistancebyahalfmile E.Iftheystillfeelgoodyoucanbeginrunninginthem F.Timespentforpreparationraisesthequalityoftraining G.Nowyouarereadytofigureoutagoalofimprovingdistanceandtime. 36. 37. 38. 39. 40.
某商场为了了解毛衣的月销售量y件与月平均气温x℃之间的关系随机统计了某4个月的月销售量与当月平均气温其数据如表 由表中数据算出线性回归方程＝bx+a中的b＝﹣2气象部门预测下个月的平均气温约为6℃据此估计该商场下个月毛衣销售量约为件．
8分Morestudentsthaneverbeforearetakingagap﹣year间隔年beforegoingtouniversity.Itusedtobecalledtheyearoffbetweenschoolanduniversity.Thegap﹣yearphenomenonoriginated起源withthemonthsleftovertoOxbridgeapplicantsbetweenentranceexamsinNovemberandthestartofthenextacademicyear. Thisyear25310studentswhohaveacceptedplacesinhighereducationinstitutionshaveputofftheirentryuntilnextyearaccordingtostatisticsonuniversityentranceprovidedbyUniversityandCollegeAdmissionsSerbiceUCAS. Thatisarecord14.7%increaseinthenumberofstudentstakingagapyear.TonyHigginsfromUCASsaidthatthestatisticsaregoodnewsforeveryoneinhighereducation.Studentswhotakeawell﹣plannedyearoutaremorelikelytobesatisfiedwithandcompletetheirchosencourse.Studentswhotakeagapyearareoftenmorematureandresponsiblehesaid. Butnoteveryoneishappy.OwainJamesthepresidentoftheNationalUnionofStudentsNUSarguedthattheincreaseisevidenceofstudenthadship﹣youngpeoplearebeingforcedintoearningmoneybeforefinishingtheireducation.Newstudentsarenowawarethattheyarelikelytoleaveuniversityupto￡15000indebt.Itisnotsurprisingthatmoreandmorestudentsaretakingagapyeartoearnmoneytosupporttheirstudyforthedegree.NUSstatisticsshowthatover40%ofstudentsareforcedtoworkduringtermtimeandthefigureincreasesto90%duringvacationperiodshesaid. 29.Whatdowelearnaboutthegapyearfromthetext? A.Itisflexibleinlength. B.Itisatimeforrelaxation. C.Itisincreasinglypopular. D.Itisrequiredbyuniversities. 30.AccordingtoTonyHigginsstudentstakingagapyear. A.arcbetterpreparedforcollegestudies B.knowalotmoreabouttheirfuturejobs C.aremorelikelytoleaveuniversityindebt D.haveabetterchancetoentertopuniversities 31.HowdoesOwainJamesfeelaboutthegap﹣yearphenomenon? A.He'spuzzled. B.He'sworried. C.He'ssurprised. D.He'sannoyed. 32.WhatwouldmoststudentsdoontheirvacationaccordingtoNUSstatistics? A.Attendadditionalcourses. B.Makeplansforthenewterm. C.Earnmoneyfortheireducation. D.Preparefortheirgraduatestudies.
将分裂旺盛的动物细胞阻断在G1/S期交界处更换培养液使其恢复分裂能力从而使所有细胞的分裂同步化之后每隔2h取样一次用流式细胞仪检测细胞内DNA含量结果如图所示下列分析正确的是
已知实数xy满足则的取值范围为．
15分Theadobedwellings土坯房61buildbythePuebloIndiansoftheAmericanSouthwestareadmiredbyeven62mostmodernofarchitectsandengineers.Inadditiontotheirsimplebeautywhatmakestheadobedwellingsadmirableistheir63abletoairconditionahousewithout64useelectricequipment.Wallsmadeofadobetakeintheheatfromthesunonhotdaysandgiveoutthatheat65slowduringcoolnightsthuswarningthehouse.Whenanewdaybreaksthewallshavegivenuptheirheatandarenowcoldenough66coolthehouseduringthehotday67thesametimetheywarmupagainforthenightThiscycle68godayafterdayThewallswarmupduringthedayandcooloffduringthenightandthusalwaysatimelyoffset抵消fortheoutsidetemperatures.As69naturearchitectsthePuebloIndiansfiguredoutexactly70thicktheadobewallsneededtobetomakethecycleworkonmostdays. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
2016年全国两会即中华人民共和国第十二届全国人民代表大会第四次会议和中国人民政治协商会议第十二届全国委员会第四次会议分别于2016年3月5日和3月3日在北京开幕．为了解哪些人更关注两会某机构随抽取了年龄在15～75岁之间的100人进行调查并按年龄绘制的频率分布直方图如图所示其分组区间为[1525[2535[3545[5565[6575]．把年龄落在区间[1535和[3575]内的人分别称为“青少年人”和“中老年人”经统计“青少年人”和“中老年人”的人数之比为911． 1求图中ab的值根 2若“青少年人”中有15人关注两会根据已知条件完成下面的2×2列联表根据此统计结果能否有99%的把握认为“中老年人”比“青少年人”更加关注两会 附参考公式和临界值表 K2＝其中n＝a+b+c+d．
10分假如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的以下作文.文中共有10处错误每句中最多有两处.错误涉及单词的增加删除或修改. 增加在缺词处加一个漏词符号∧并在此符号下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错词下面划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. OnedaylittleTonywenttoashoppingcenterwithhisparent.Itwasverycrowded.Tonysawatoyonashopwindow.Helikeditsoverymuchthathequicklywalkedintotheshop.Afterlooksatthetoyforsometimeheturnedaroundandfoundwherehisparentsweremissing.Tonywasscaredandbeguntocry.Awomansawhimcryingandtellinghimtowaitoutsideashop.Fiveminuteslater.Tonysawparents.MomsaidHownicetoseeyouagain!DadandIwereterribleworried.Tonypromisedherthatthiswouldneverhappenagain.
30分Wheredoyougowhenyouwanttolearnsomething?Afriend?Atutor?Theseareall41acesoflearning.Butitmaywellbethatthelearningyoureallywant42somewhereelseinstead.Ihadthe43ofseeingthisfirsthandona44. Mydaughterplaysonarecreationalsoccerteam.Theydidverywellthisseasonandso45atournamentwhichnormallywasonlyformoreskilledclubteams.Thisledtosome46experiencesonSaturdayastheyplayedagainstteams47trained.Throughthefirsttwogamesher48didnotgetonseriousshotongoal.AsapparentI49seeingmydaughterplayingherbest50stilldefeated. ITseemedthatsomethingclickedwiththe51betweenSaturdayandSunday.Whenthey52fortheirSundaygametheywere53different.Theyhadbegunintegrate融合thekindsofplayandteamworktheyhad54thedaybeforeintotheir55.Theyplayedaggressivelyand56scoredagoal. It57methatplayingagainsttheotherteamwasagreat58momentforallthegirlsontheteam.Ithinkitisageneralprinciple.59isthebestteacher.Thelessonstheymaynotbe60whattheywouldhavegotteninschool.Butarecertainlymorepersonalandmeaningfulbecausetheyhadtoworkthemoutontheirown. 41.A.public B.traditional C.official D.special 42.A.passes B.works C.lies D.ends 43.A.dream B.idea C.habit D.chance 44.A.trip B.holiday C.weekend D.square 45.A.won B.entered C.organized D.watched 46.A.painful B.strange C.common D.practical 47.A.less B.poorly C.newly D.better 48.A.fans B.tutors C.class D.team 49.A.imagined B.hated C.avoided D.missed 50.A.if B.or C.but D.as 51.A.girls B.parents C.coaches D.viewers 52.A.dressed B.showedup C.madeup D.planned 53.A.slightly B.hardly C.basically D.completely 54.A.seen B.known C.heard D.read 55.A.styles B.training C.game D.rules 56.A.even B.still C.seldom D.again 57.A.confused B.struck C.reminded D.warned 58.A.touching B.thinking C.encouraging D.learning 59.A.Experience B.Independence C.Curiosity D.Interest 60.A.harmfulto B.mixedwith C.differentfrom D.appliedto.
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