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已知一个几何体的正视图和侧视图是两个全等的等腰三角形，腰长为3，底边长为2，俯视图是一个半径为1的圆（如图），则这个几何体的内切球的体积为（ ）
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高三下学期数学《》真题及答案
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一个几何体的三视图如下图所示其中正视图和侧视图是腰长为4的两个全等的等腰直角三角形.则用个这样的几何
已知某几何体的俯视图是如图所示的矩形正视图或称主视图是一个底边长为8高为4的等腰三角形侧视图或称左视
一几何体的三视图如图所示其中正视图与左视图是两个全等的等腰三角形俯视图是圆则该几何体的侧面积为.
已知某几何体的俯视图是如图所示的矩形正视图或称主视图是一个底边长为8高为4的等腰三角形侧视图或称左视
某几何体的俯视图是如图所示的矩形正视图是一个底边长为8高为5的等腰三角形侧视图是一个底边长为6高为
一个何体的三视图如右图所示其中正视图是底边长为6腰长为5的等腰三角形侧视图是底边长为2的等腰三角影则
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正四棱锥的底面边长为2侧棱长均为其正视图主视图和侧视图左视图是全等的等腰三角形则正视图的周长为___
一个几何体的正视图俯视图与侧视图都是腰长为1的等腰直角三角形则这个几何体的体积是
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已知某几何体的俯视图是如图所示的矩形正视图或称主视图是一个底边长为8高为4的等腰三角形侧视图或称左
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已知某几何体的俯视图是如图所示的矩形正视图是一个底边长为8高为4的等腰三角形侧视图是一个底边长为6高
一个几何体的三视图如下图所示其中正视图和侧视图是腰长为4的两个全等的等腰直角三角形.则用个这样的几何
已知某几何体的俯视图是如图5所示的矩形正视图或称主视图是一个底边长为8高为4的等腰三角形侧视图或称左
一个几何体的三视图如图所示其中正视图和侧视图是腰长为4的两个全等的等腰直角三角形则用________
已知某几何体的俯视图是如图所示的矩形正视图或称主视图是一个底边长为8高为4的等腰三角形侧视图或称左视
若一个几何体的正视图和侧视图都是等腰三角形俯视图是圆则这个几何体可能是
圆柱
三棱柱
圆锥
球体
如图所示某几何体的正视图侧视图均为等腰三角形俯视图是正方形则该几何体的外接球的体积是________
已知某几何体的俯视图是如图所示的矩形正视图或称主视图是一个底边长为8高为4的等腰三角形侧视图或称左视
已知一几何体的三视图如图所示正视图和侧视图都是矩形俯视图为正方形在该几何体上任意选择4个顶点以这4个
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一个几何体的三视图及其尺寸如图所示其中正视图是直角三角形侧视图是半圆俯视图是等腰三角形则这个几何体的
一个空间几何体的正视图与侧视图均为全等的等腰三角形俯视图为一个圆及其圆心那么这个几何体为
棱锥
棱柱
圆锥
圆柱
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8分Theseallyingontopoftheicedoesn'tstandachance.Knockedintotheseathesealbecomesamealforoneoftheoceanstophunters﹣thehugeorcaorkillerwhale. Orcashuntalmosteverythingfromfishtosealssealionspenguinssharksandevenotherkindsofwhales.Dependingontheseasonandwheretheyaretheirdietvaries﹣someorcaseatmorefishesthansealsandpenguins.Butwherevertheyareinanyoftheworld'soceansaverage﹣sizedorcasmayeatabout500poundsoffoodaday.Orcashavemanyhuntingtechniquesandstrikingsealsofficeisjustoneofthem. Oftenreferredtoaswolvesoftheseaorcasliveandhunttogetherinfamilygroupsmuchlikeapackofwolves.Groupsoforcasworktogethertodrivefishintoacompactareasothatthey'reeasiertoeat.Theywillalsohittheirtailsontothewater'ssurfacecausingawavetowashpenguinsorsealionsintothewater. Orcas'teethnumberingabout45andeachmeasuringabout3incheslongareshapedfortearingprey猎物Orcasdonotchewtheirfood.Theycanswallowsmallsealsandsealionswhole.Thepreyslidesdowntheorcas'throats!Thecolorpatternoforcasmayhelpthemat﹣tacktheirprey.Theirbacksareblackbuttheirstomachsarewhite.Animalslookingdownonanorcafromabovesuchasasealonicemightnotseeitbecausethewhale'sdarkbackblendswiththewaterbelow. Ontheotherhandthewhale'swhiteundersidecombineswiththelightstreamingdownintotheseafromthesurfacemakingithardtospotfrombelow.Withorcascamouflagedsowellthosepreyfishpenguinsorsealsarelikelytomissthedangerheadingtheirwayasthekillerwhaleonceagainprovesitistheoceans'superblydesignedhunter. 28.Accordingtothetextweknoworcasare. A.goodatusingtheirteeth B.themostcruelhuntersintheworld C.bigwhaleswhodon'thuntotherwhales D.skillfulhunterswholikehuntingmanycreatures 29.Whichwordcanbeusedmostprobablytodescribeorcaswhentheyarehunting? A.Cooperative B.Incompetent. C.Swift. D.Careful. 30.WhatisthemainideaofParagraph4? A.Thereasonswhyorcashuntseals. B.Theenvironmentwhereorcaslive. C.Thefeaturesofwhatorcaslooklike. D.Thewaysofhoworcashuntanimals. 31.WhatdoestheunderlinedwordblendsinParagruph4mean? A.Meets. B.Mixes. C.Struggles. D.Equips.
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当今一些父母为自己的孩子决定一切包办一切.你班的英语课上要讨论这个话题.请你根据下列表格的内容提示以Childrenshouldlearntomaketheirowndecisions为题写一篇发言稿来分析此现象并提出改善措施. 内容提示 要求1.可适当增加细节使内容充实行文连贯. 2.词数不少于100开头已给出不计入总词数. Childrenshouldlearntomaketheirowndecisions ParentsinChinatendtomakealldecisionsfortheirchildren.
1分Manyuniversitiesthroughouttheworldprovidescholarshipsforstudentsfinancialaid. A.infavourof B.inneedof C.infaceof D.inhonourof
25分假定你是李华你的关国网友Tom上周因妈妈感冒而缺席了很多课.就此请你用英语给他写封邮件主要内容包括 1表达看法 2打听近况 3给出建议. 注意 1词数100左右 2可以适当增加细节以使行文连贯 3开头和结尾已给出不计入总词数. DearTom I'msorrytohearthatyourmothercaughtacoldlastweek.. Bestwishes.I'mlookingforwardtoyourreply. Yours LiHua.
Britishpeoplesayhorseracingisthesportofkings.Sometimesthoughtwohosesreachthewinningposttogether.Thejudgehastodecidewhichhorseisfirstbylookingataphotograph.Peopleintheracingworldcallthisaphotofinish.Thewinninghorsewinsbyaheadoranose. Occasionallythejudgemakesamistake.Onejudgehadtodecidewhetheradark﹣coloredhorseorapalehorsewontherace.Unfortunatelyhehadtomakethedecisionquicklysohejudgedthephotofinishfromanegative.Inphotographicnegativesdarkcolorsarealwayslightandlightcolorsdark.Thejudgeforgotthatandsaidthepalehorsewon.Whenthenegativewasprintedyoucouldseethatthedarkhorsewasthewinner.Butitwastoolate.Thepeoplewhobetmoneyonthepalehorsewonandthepeoplewhobetmoneyonthedarkhorse﹣﹣therealwinner﹣﹣lost! 1Allthefollowingstatementsaretrueexcept. A.ChariotracesbeganfromtheAncientRomans B.HorseRacingiscloselyrelatedtogamblingfromtheverybeginning C.Horsesrunfewerracestodaythantheydidinthepast D.Chariotracesaremoreexcitingtodaythanhorseraces 2Accordingtothepassagehorseracingis. A.thebestofallthesports B.knownasthesportsofkings C.thesportsenjoyedonlybykings D.bettingmoney 3ThejudgeannouncedthatThepalehorsewonwhilethedarkhorsewastherealwinnerbecause. A.hewanttomakeajoke B.heintendedtoshowhistalent C.hefailedtorememberthatthecolorsinphotographicinnegativesweredifferentfromtheonesinphotographicpositives D.hedidn'tseethecolorclearly
1分Weallknowthatgoodresultsforyouwhenyoustartdoingthingsyoulove. A.arewaiting B.havewaited C.havebeenwaiting D.willbewaiting
1分Thereisnosimpleanswertosuchaquestion.isoftenthecaseinsaid. A.one B.that C.as D.what
1分Therearecertainhistoricoccasionsarelikelytoremindpeopleofwhathappenedinthepastandsetpeoplereflectingonthem. A.when B.that C.where D.what
10分根据短文内容从短文后的选项中选出能填入空白处的最佳选项.选项中有两项为多余选项. Manypeoplecomplainaboutnothavingenoughtimetoexercise.Ithinktheyarelyingtothemselves.Therealproblemisthattheyhateexercising.36GoingtothegymseemeddullandpainfulcomparedtomostotherwaysIcouldspendmytime.ButbynotgivingupandlookingforawayIcouldenjoyworkingoutIchangedthispattern.Herearesometipstomakeexercisesomethingyouactuallywanttodo 37Removethethinkingelement.Ifyoucanmakeexerciseahabitthenitbecomesthatmucheasiertogo. Getapartner.38Picksomeonewhocaresabouttheirhealth.Notonlycanyousocial﹣izewithsomeonewhileyou'retherebutyou'llhaveabackupincaseyourmotivationaloneisn'tenoughtodragyourselfoutthere. Experiment.Don'tstickwiththesameroutine.39Therearemanydifferentexerciseroutinesyoucanfolloworactivitiestotry.Ifyoudon'tlikeliftingweightsyoucantryrunningordancing. Maketime.Youcan'tsayyoudon'thavetimetoexercise.Exerciseimprovesyourenergylevelsandmoodwhichmakesyoumoreproductivethananytimelout.40Getupabitearlierandgointhemorning.Orscheduleitrightafterworkbeforeyousettledownfortheday.Onceyoumakelimeandmakeitahabityou'llactuallywanttoexerciseinsteadofjustfeelingyoushould. A.Makeitahabit. B.Recordimprovements C.Iusedtohateexercisingtoo. D.Mixitupandtrydifferentactivities. E.Herearetwobadwaystostartexercising. F.Getsomeoneelsetogotothegymwithyou. G.Findyourfortyminutessomewhereinthedayandmakeitarule.
1分It'snecessarythatnotonlytoseeadoctorbutalsohaveagoodrest. A.willBoygo B.Bobwillgo C.shouldBobgo D.Bobshouldgo
1分It'soverthreeyearssincethereleaseofanimationFrozenbuttheicyqueenandherfrozenempirearestillstayingputinthespotlightasifthemovieonlylastmonth. A.werereleased B.hadbeenreleased C.wouldhavebeenreleased D.wasreleased.
Europeansshouldtrytostayindoorsifashfromlceland'svolcanostartssettlingtheWorldHealthOrganizationwarnedFridayassmallamountsfellinIcelandScotlandandNorway. WHOspokesmanDanielEpsteinsaidthemicroscopic微小的ashispotentiallydangerousforpeoplewhenitstartstoreachtheEarthbecauseinhaled吸入particlescanenterthelungsandcauserespiratoryproblems.AndhealsosaidEuropeanswhogooutsidemightwanttoconsiderwearingamask. Otherexpertshoweverweren'tconvincedthevolcanicashwouldhaveamajoreffectonpeoples'healthandsaidWHO'swarningswerehysterical.Theysaidvolcanicashwasmuchlessdangerousthancigarettesmokeorpollution.Volcanicashismadeoffineparticlesoffragmentedvolcanicrock.Itislightgraytoblackandcanbeasfineastalcumpowder.Duringavolcaniceruptiontheashcanbebreatheddeepintothelungsandcauseirritationeveninhealthypeople.Butonceitfallsfromagreaterdistance﹣likefromthecloudcurrentlyhoveringaboveEurope﹣itshealtheffectsareoftenminimalexpertssay. NotallparticlesarecreatedequalsaidKenDonaldsonaprofessorattheUniversityofEdinburghInthegreatschemeofthingsvolcanicashisnotallthatharmful.AndhesaidmostEuropeans'exposuretovolcanicashwouldbeignoredandthatonlythoseintheneardistrictsoftheIcelandicvolcanowouldlikelybeatrisk. Dr.StephenSpiroaprofessorofrespiratorymedicineanddeputychairoftheBritishLungFoundationsaidthefurthertheparticlestravelthelessdangeroustheywillbe.ThecloudhasalreadypassedovernorthernScotlandandwehaven'theardofanyilleffectstherehesaid.Spirosaidtowearmasksorstayindoorstoavoidvolcanicashwasoverthetopandabithysterical. 1Thetextismainlyabout. A.theeffectofvolcanicash B.thehealthriskofvolcanicash C.thedisadvantagesofvolcanicash D.theopinionsonhealthriskofvolcanicash 2WhichoneistrueaccordingtoParagraph3? A.Thevolcanicash'seffectsonEuropeanswerelittle. B.Theashcausedirritationeveninhealthypeople. C.OtherexpertsthoughtWTO'Swarningswereuseful. D.Thevolcanicashwasmoredangerousthancigarettesmokeorpollution. 3TheunderlinedwordhystericalinParagraph4mostprobablymeans. A.amazing B.practical C.valuable D.overstated 4Whatcanwelearnfromparagraph? A.Thevolcanicashwouldn'tbeharmfultopeople. B.Allexpertsthoughtthevolcanicashdidgreatharmtoourhealth. C.Peopleclosetothevolcanowouldlikelybeatriskaccordingtosomeexperts. D.EuropeansshouldstayindoorsbecauseIceland'svolcanostartssettling.
Weallknowofcoursethatresultsarethecauseofaction.Buthowdoyou1thehabitoftakingaction?Inorder2ustosuccessfullyimplementthehabitoftakingactionwehavetolearnhowtouseourimaginationandindependentwilltoovercomeour3. Wehavea4endowmentashumansweareresponsible.Whenwetakea5lookatthewordresponsibilitywefinditsrootscomefromthetwowordsresponseandability.Wehavetheabilitytorespond6theabilitytotakeaction. Whenwemakethe7ofbecomingresponse﹣ableweacceptthatour8aretheproductofourchoices.Thechoicetotakeactionornotwillultimatelydetermineyourresults.Ifyouwantresultsinlifeyoumust9thehabitoftakingconsistentaction. Thereasonmostpeopledon'ttakeactionisbecausetheythinktheyareaproductoftheir10.Thisisaclassiccaseofdeterminismandadistortedviewofreality.Thisthinkinggetsusnowhereasitleavesourfate11ourcontrol.Ifourcircumstancesarebeyondourcontrolnaturallywe'll12motivationtotakeaction.What'sthepointwhenwe'reaproductofourenvironment? Thismayseemlikeano﹣brainerbutmostpeoplegoforexactlytheopposite.Theygoforsecuritysafetyandcomfort.Theyspendmoretime13outerresourcesthendevelopinginnerones. Ifyou'regoingtodevelopthehabitoftakingactionyouneedtobemotivated.Ifyou'redoingwhatyoulovetodoeverydayyou'relikelytotake14andmassiveaction.Ifyou'reworkinginajobyou15slavingyourselfawayinacubicleyou'relesslikelytotakeaction.You'rejustgoingtodothebareminimumtogetby. Todevelopthehabitofactionweneedtomake16thatinspireus.Whenwe'reinspiredwe'llbemotivatedandthe17resultisthatwe'lltakelotsandlotsofaction. Findawaytostartdoing18youloveevenifyouhavetostartsmall.You'remorelikelytodevelopyourtalentsinsomethingyouloveratherthansomethingthatgivesyoua19senseofsecurity.Ifyoufeellikeyoudon'thaveenoughtime20makingtimefortheimportant.Ifwedon'tmaketimeforthethingsthatreallymattertouswhenwillwe?Whowantstogofromthecubicletothecasket? 1A.take B.have C.make D.develop 2A.of B.to C.for D.at 3A.shortcoming B.conditioning C.doing D.working 4A.unique B.only C.one D.kind 5A.better B.closer C.near D.good 6A.or B.and C.but D.so 7A.chance B.action C.decision D.determination 8A.lives B.fates C.futures D.character 9A.catch B.master C.grasp D.understand 10A.parents B.surroundings C.environment D.God's 11A.under B.without C.beyond D.within 12A.much B.many C.lack D.plenty 13A.getting B.making C.gain D.acquiring 14A.frequent B.continue C.consistent D.often 15A.enjoy B.like C.love D.hate 16A.ideal B.goals C.dreams D.ambitions 17A.natural B.general C.total D.unexpected 18A.that B.where C.how D.what 19A.false B.mistake C.strength D.weakness 20A.guess B.consider C.plan D.advise
1分Icansharewithherourtravellingexperiencestakingcareofpetsorwehaveincommon. A.whatever B.whichever C.nomatterwhat D.nomatterwhich
1分StudentsarenotrequiredtotaketheTOEELortheIELTStestbutwewelcomethesubmissionofyourscoreifyouhavetaken. A.both B.none C.either D.neither
1分﹣Heytheboywithabluebackpackcomeoverhere?Weneedanotherhandwiththistable. ﹣Me?OhsorrybutI'vegotaninjuryinmyleg. A.shall B.would C.should D.must
1分IwasonceashamedtoadmitmyweaknessbutnowIhavenosuchfeelingandImyselfmuchdiscomfort. A.grant B.dismiss C.save D.rid
1分Ourclassheldafierceastowhethertoreducetheamountofhomeworkornot. A.bargain B.competition C.debate D.campaign
10分Ifyouhaveadaughtertakethetimetoreadthis.Itcouldsaveheralotofheartache.Nottomentionstomachachesheadachesmisseddaysofschoollowergradeseatingissuesanddepression. Thesadtruthisthateveryschoolwhetherpublicorprivatehasmeangirls.Ibetyoucanstillevenrememberwhotheyarefromyourschool.AsaschoolconsultantandmotherofthreedaughtersIknowfirsthandbothpersonallyandprofessionallyhowmuchithurtswhengirlsaretargetedbybullies恃强凌弱者. Theoldsayingsticksandstonesmaybreakmybonesbutwordswillneverhurtmecouldn'tbefurtherfromthetruth.Whileboysusuallybullythroughintimidation胁迫girlsbullythroughexclusionalsocalledrelationalaggression.Here'sanexampleofacaseofrelationalbullyingtakenfrommyexperienceasaschoolconsultant HeatherwasmiserablebecauseagirlinherclassLesliewasnotonlysayingmeanthingstoherfacebutgettingtheothergirlsintheclasstoexcludeherwiththeageoldlineYoucan'tbefriendswithmeifyou'refriendswithher.InoursessionsHeatherwouldcomplainthatshedidn'thaveanyonetoplaywithbecausegirlswereafraidthatiftheyhungaroundherthey'dbecomeLeslie'snexttarget. InordertoimprovethesituationIhadtonotonlyreducethepowerLesliehadbutempowerHeatheraswell.Herearesomeideasthathelpedadaptedforusebyparents Askforspecificswhenyourdaughtermentionsbullying.Who?Where?How? Telltheprincipalandclassroomteacherthespecificsofhowsheisbeingbullied.Havethemtellotherteachersi.e.gymartmusichallwaymonitorsandcafeteriastaffsothateveryonewhocomesincontactwithhercanbeonthelookoutandreadytointerfere. Explaintoherthatreportinganincidentisnotthesameastattling打小报告andhavehertellanadultatschoolwhensheisbeingbullied. Teachhertoconveyself﹣confidencebywalkingconfidentlywithherheadup.Bulliestargetthosetheythinkareweaker. Arrangeopportunitiesforyourdaughtertosocializewithherfriendsoutsideofschooltohelphermaintainastrongsocialsupportsystem. InHeather'scasethesestepsrelievedtheproblem.Butbecauseit'stoughertocatchgirlbulliesit'sextremelyimportantforgirlstotellanadultiftheyarebeingbullied.Unlikeboyswhousuallybullyphysicallymeangirlsoftenspreadrumorswhisperastheirtargetwalksbytalkloudlyaboutapartyshewasn'tinvitedtogiveherthesilenttreatmentandasdiscussedabovetellothersnottobefriendswithher.Schoolpersonnelaretheretohelpbutinordertodoanythingtheymustknowaproblemexists!
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