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已知tanα=3,则=( )
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高三下学期数学《》真题及答案
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已知2tanα·sinα=3的值是________.
已知tanθ=3则sinθcosθ=________.
已知αβ∈0π且tanα-β=tanβ=-求2α-β的值.
已知方程x2+3ax+3a+1=0a>1的两根分别为tanαtanβ且αβ∈则α+β=_______
已知tan110°=a则tan50°=.
已知tanα=2tanβ=3则tanα+β=.
已知a=tan1b=tan2c=tan3则abc的大小关系为
a>b>c
a>c>b
c>b>a
c>a>b
已知锐角αβ满足tanα-β=sin2β求证tanα+tanβ=2tan2β.
已知αβ∈0满足tanα+β=9tanβ则tanα的最大值为.
已知tanα=4tanβ=3那么tanα+β=.
已知α∈且4tan2π+α+3sin6π+β-10=0-2tan-α-12sin-β+2=0则tan
-3
3
±3
不确定
已知tanα-β=tanβ=-且αβ∈0π求2α-β的值.
在直角三角形ABC中已知∠C=90°∠A=40°BC=3则AC=
3sin40°
3sin50°
3tan40°
3tan50°
已知tanα+β=3tanα﹣β=2则tan2α的值为.
已知tanα+β=3tanα﹣β=5则tan2β=.
已知tanα=2tanβ=3则tanα+β=.
已知tanα=tanβ=且αβ∈0π则α+2β=________.
已知αβ均为锐角且tanβ=则tanα+β=.
已知A.B.C.皆为锐角且tanA.=1tanB.=2tanC.=3则A.+B.+C.的值为____
已知tanα=tanβ=并且αβ均为锐角则α+2β=.
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1分It'soverthreeyearssincethereleaseofanimationFrozenbuttheicyqueenandherfrozenempirearestillstayingputinthespotlightasifthemovieonlylastmonth. A.werereleased B.hadbeenreleased C.wouldhavebeenreleased D.wasreleased.
1分Icansharewithherourtravellingexperiencestakingcareofpetsorwehaveincommon. A.whatever B.whichever C.nomatterwhat D.nomatterwhich
20分Ipromiseyoutherewillneverbeaperfecttimetodoanythinginyourlife.36willeverfeel100%certainormakeperfectsensetoyouandeveryoneelse.Therewill37beaperfecttimetofallinloveortotraveltheworld.Youwillneverhaveenoughtrainingenoughpreparationorenoughmoney.And38thisevenwhenyoufeelreadytotakeabravestepintothe39otherswilllikelytryto40yououtofit.Becausetheywon'tfeelreadythemselvesandyourambitionandbraverywill41theirlevelsofcomfort.Butyoudon't42themanexplanationoranyotherpersonal43youdon'twanttomake.Thisisratherdifficultto44atfirst. Waitingtofeel100%readyorsureisthe45wayinwhichwecheatourselvesoutofwonderfullifeexperiences.Ichallengeyouto46freeyourselffromthisself﹣limitingstateofmind.Bookthatplaneticketevenifyoufeellotsof47.Signupforthateducationalcourseevenifyouhavenoidea48itwillgo.TrustmewhenItellyouitwillallcometogetherforthe49. Whenyoumeetyourdreamswith50whenyoumeetthemwithmentalandphysicaldevotionyou51yourtrustintheactofLIVING.Youmakeyourdreamsa52insteadoflineitemsonalist.Andthat'sgoodbecauseyourdreamsare53tobeexperiences.Youhaveto54themoutintherealworldtoknowifthey'repossibleandworthwhileadventuresinthelongrun. Asyou55onthisnewjourneyoflivingrememberthatsomepeoplearoundyouwillnaturallybetakenaback.Butaslongasyouaren'thurtingthemyoudon'towethemanythingthattakesawayyourpowertomoveforwardwithyourlife. 36.A.Something B.Nothing C.Anything D.Everything 37.A.never B.always C.occasionally D.forever 38.A.despite B.for C.from D.after 39.A.impossible B.unknown C.beautiful D.true 40.A.help B.cheat C.talk D.get 41.A.improve B.remove C.increase D.challenge 42.A.offer B.give C.allow D.owe 43.A.excuse B.decision C.sacrifice D.profits 44.A.refuse B.grasp C.admit D.confirm 45.A.hardest B.bitterest C.easiest D.dullest 46.A.automatically B.casually C.vainly D.consciously 47.A.uncertainty B.comfort C.anxiety D.hopelessness 48.A.how B.when C.why D.whether 49.A.worse B.better C.closer D.deeper 50.A.difficulty B.doubt C.intention D.success 51.A.carry B.remove C.experience D.invest 52.A.reality B.priority C.burden D.relief 53.A.meant B.listed C.realized D.entitled 54.A.check B.bring C.work D.test 55.A.wander B.rest C.progress D.hesitate
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!
12分JobsquicklybecameboredwithcollegeHelikedbeingatReedjustnottakingIherequiredclasses.Infacthewassurprisedwhenhefoundoutthattherewerestrictcourserequirements.WhenWozniakcametovisit.Jobswavedhisscheduleathimandcomplained.Theyaremakingmetakeallthesecoyrses.WozniakrepliedYesthat'swhattheydoincollegeJobsrefusedtogototheclasseshewasassignedandinsteadwenttotheoneshewantedsuchasadanceclasswherehecouldenjoyboththecreativityaridthechancetomeetgirls.Iwouldneverhaverefusedtotakethecoursesyouweresupposedtothat'sadifferenceinourpersonality.saidWozniaksurprisedlyandadmiringly. Jobsalsobegantofedguiltyaboutspendingsomuchofhisparents'moneyonaneducationthatdidnotseemworthwhile.Allofmyworking﹣classparents'savingswerebeingspentonmycollegetuition学费.hedetailedhisexperienceinafamousceremonyaddressatStanford.IhadnoideawhatIwantedtodowithmylifeandnoideahowcollegewasgoingtohelpmefigureitout.AndhereIwasspendingallofthemoneymyparentshadsavedtheirentirelife.SoIdecidedtodropoutandtrustthatitwouldallworkoutokay. Hedidn'tactuallywanttoleaveReedhejustwantedtoquitpayingtuitionandtakingclassesthatdidn'tinteresthim.SurprisinglyReedtoleratedthat.Hehadaveryinquiringmindthatwasenormouslyattractivesaidthedeanofstudents.JackDudman.Herefusedtoacceptautomaticallyreceivedtruthsandhewantedtoexamineeverythinghimself.DudmanallowedJobstoauditclassesandstaywithfriendsinthedormsevenafterhestoppedpayingtuition. TheminuteIdroppedoutIcouldstoptakingtherequiredclassesthatdidn'tinterestmeandbegindroppinginontheonesthatlookedinteresting.hesaid.Amongthemwasacalligraphy书法classthatappealedtohimafterhesawpostersoncampusthatwerebeautifullydrawn.Ilearnedaboutserifandsansseriftypefaces字体aboutvaryingtheamountofspacebetweendifferentlettercombinationsaboutwhatmakesgreattypographygreat.Itwasbeautifulhistoricalartisticallyfineinawaythatsciencecan'tcaptureandIfounditfascinating. ItwasyetanotherexampleofJobsconsciouslypositioninghimselfattheintersection相交点oftheartsandtechnology.Inallofhisproductstechnologywouldbemarriedtogreatdesignelegancehumantouches﹣andevenromance.*MfIhadneverdroppedinonthatsinglecourseincollegetheMacwouldhaveneverhadsomanytypefaces.AndsinceWindowsjustcopiedtheMacit'slikelythatnopersonalcomputerwouldhavethem. MeanwhileJobshadahardtimeatReed.HewentbarefootmostofIhetimewearingsandalswhenitsnowed.ElizabethHolmesmademealsforhimtryingtokeepupwithhisobsessivediets.HereturnedsodabottlesforsparechangecontinuedhislonghardjourneystothefreeSundaydinnersattheflareKrishnatempleandworeadownjacketintheheatlessgarageapartmentherentedfor$20amonth.Whenheneededmoneyhefoundworkatthepsychologydepartmentlabmaintainingtheelectronicequipmentthatwasusedforanimalbehaviourexperiments.OccasionallyChrisannBrennanwouldconictovisit.Theirrelationshipdevelopedabnormally.Butmostlyhetendedtothebeginningofhisownsoulandpersonalgoalforenlightenment开明. IcameofageatamagicaltimehereflectedlaterOurconsciousnesswasraisedbyZenandalsobyLSDEvenlaterinlifehewouldcreditcertaindrugsformakinghimmoreenlightened.TakingLSDwasavaluableexperienceoneofthemostimportantthingsinmylife.LSDshowsyouthatchoresanothersidetothecoinandyoucan'trememberitwhenitwearsoff.butyouknowit.Itheightenedmysenseofwhatwasimportant﹣creatingwonderfulthingsinsteadofmakingmoneyputtingthingsbackintothestreamofhistoryandofhumanconsciousnessasmuchasIcould. 65.JobsandWozniakdifferedin. A.approachtofreedom B.appetiteforknowledge C.attitudetorequirements D.affectionforcollegelife 66.OnefactorinJobs1decisiontoleavecollegeisthat. A.hisfamilywasinabsolutepoverty B.hewantedtobeindependentofhisparents C.hewouldn'thavehisparents'moneywasted D.thecollegecouldn'tpreparehimforhissetgoal 67.FromJackDudman'sstatementweamseethatJobswas. A.ratherdifficulttogetalongwith B.quitegoodatsolvingproblems C.toostubborntochangehismind D.veryseriousaboutexistingbeliefs 68.TheunderlinedwordauditinParagraph3means. A.attendinformally B.missoccasionally C.givesuccessfully D.conductirregularly 69.Jobsworkedontypefaceswhilesufferingfromahardlife. A.toprovehisvaluetothewholeworld B.tobringsomethinggreatintoexistence C.tomakehimselfwealthyforabetterlife D.toshowcollegewasunimportanttohim 70.Whichofthefollowingcanbethepropertitleforthepassage? A.StayOut B.DropOut C.HoldOut D.WorkOut.
1分Asisjokedbysomepeoplethereisasquarethereissquaredancing. A.because B.when C.since D.where
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