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已知圆的极坐标方程为ρ＝4cosθ，圆心为C，点P的极坐标为（4，），则|CP|＝ ．
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高三下学期数学《》真题及答案
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2015年·北京重点中学模拟3月在极坐标系中过圆ρ＝4cosθ的圆心且垂直于极轴的直线的极坐标方程
已知圆的极坐标方程为圆心为C.点P.的极坐标为则|CP|=.
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已知极坐标的极点在直角坐标系的原点处极轴与x轴非负半轴重合直线l的参数方程为t为参数曲线C.的极坐标
已知曲线C1C2的极坐标方程分别为ρcosθ=3ρ=4cosθ则曲线C1C2交点的极坐标为
在平面直角坐标系中以坐标原点为极点x轴的非负半轴为极轴建立极坐标系.已知曲线C.的极坐标方程为ρ=4
在直角坐标系xOy中以坐标原点为极点x轴正半轴为极轴建立极坐标系已知某圆的极坐标方程为ρ2－4ρco
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6分ThatMondaymorningfeelingcouldbeacrushingpaininthechestwhichleavesyousweatingandgaspingforbreath气喘吁吁.RecentresearchfromGermanyandItalyshowsthatheartattacksaremorecommononMondaymorningsanddoctorsblamethestressofreturningtoworkaftertheweekendbreak. Theriskofhavingaheartattackonanygivendayshouldbeoneinsevenbutasix﹣yearstudyhelpedbyresearchersattheFreeUniversityofBerlinofmorethan2600Germansshowedthattheaveragepersonhada20percenthigherchanceofhavingaheartattackonaMondaythanonanyotherday. WorkingGermansareparticularlynotprotectedagainstattackwitha33percenthigherriskatthebeginningoftheworkingweek.Non﹣workersbycomparisonappeartobenomoreatriskonaMondaythananyotherday. Astudyof11000Italiansproved8a.m.onaMondaymorningasthemoststressfultimefortheheartandbothstudiesshowedthatSundayistheleaststressfuldaywithfewestheartattacksinbothcountries. ThefindingcouldleadtoabetterunderstandingofwhatistheimmediatecauseofheartattacksaccordingtoDrStefanWillichoftheFreeUniversity.Weknowalotaboutlong﹣termriskfactorssuchassmokingandcholesterol胆固醇butwedon'tknowwhatactuallycausesheartattackssowecan'tgiveclearadviceonhowtopreventthemhesaid. Mondaymorningshaveadoublehelpingofstressfortheworkingbodyasitmakesarapidchangefromsleeptoactivityandfromtherelaxingweekendtothepressuresofwork. Whenpeoplegetuptheirbloodpressureandheartrategoupandtherearehormonal内分泌changesintheirbodiesWillichexplained.A1thesethingscanhaveanunfavorableeffectinthebloodsystemandincreasetheriskofaclot血凝块whichwillcauseaheartattack. Whenpeoplereturntoworkafteraweekendoffthepaceoftheirlifechanges.TheyhaveahigherworkloadmorestressmoreangerandmorephysicalactivitiessaidWillich. 32.Mondaymorningfeelingasthispassageshows. A.isnotasseriousaspeoplethought B.isthefirttkillerinGermanyandItaly C.iscreatedbyresearchersinGermanyandItaly D.isharmfultoworkingpeopleinthecountriessurveyed 33.Toprotectpeoplefromaheartattackdoctorshavepaidmuchattentionto. A.people'sworkingtime B.people'slivingplace C.people'sdietandlifestyle D.people'snationalities 34.ItcanbelearnedfromthispassagethattheheartattackhassomethingtodowithallthefollowingEXCEPT. A.bloodpressure B.heartrate C.hormonalchanges D.bloodtype 35.IftheresearchersgiveussomeadvicetoavoidMondaymorningfeelingwhatmightitbe? A.Improveworkingconditions. B.NevergotoworkonMondays. C.StaywithadoctoronMondays. D.TakemedicinesonMondaymornings.
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20分Itaughttwoyearsagointhesecondgradeasastudentteacher实习教师.Iwasluckyenoughtobewiththe41classforanentireschooiyear.ThenIkneweveryoneinmyclasswell.InMaywhenI42theteachingIdecidedtobuystar﹣﹣shapedpiecesofpaperforeachkidasagift.IwroteoneachpieceMissH.thinksyou'rea43because…andthenwrotealittlefactabouteachone.Iwasdoubtful怀疑的aboutdoingthissincethoselittlekidswereso44butoneofmyfriends45thatifthestarwouldmeansomethingtothemthenitwasworthmy46. OneofthelittlegirlsMeganhadADHD儿童多动症andwasgoingthroughmore47toseeifshehadanother48disabilitywhichwouldinfluenceherstudy.Thethingaboutherwasthoughthatshewasso49.Shewassmartinherownway.OnherstarIwroteMissH.thinksyou'reastarbecauseyouhavean50memoryfornames.Ialsothinkyou'resmartandIreally51youcandoanythingifyoutryhardenough. AfterI52thestarsIwasstandinginfrontofthe53teachingthechildrentopackupfortheendofthelastday.Megancameuptome54thestarinherhand. Heydoyou55metoreadthatforyouMegan?Iaskedher. NosherepliedlookingatmewithsmilingeyesIalready56it.ThenshesaidYouthinkI'msmart?ItwaslikeIwasthefirstpersontoever57herthat.Itwaslikethe58thatshewassmarthadneverevencrossedhermind.Therewasnooneelsewhohadsaidthatbefore59shereceivedthatstar. Itwasbyfartheonlygreatest60inmyteachercareer.WheneverIfeeldiscouragedintheclassroomIwouldthinkofit. 41.A.next B.same C.real D.big 42.A.trained B.remembered C.prepared D.finished 43.A.star B.hero C.model D.friend 44.A.young B.sad C.quiet D.patient 45.A.wrote B.reported C.suggested D.imagined 46.A.visit B.chance C.time D.point 47.A.posibilities B.skills C.changes D.tests 48.A.walking B.learning C.speaking D.singing 49.A.clever B.beautiful C.fat D.short 50.A.bad B.early C.excellent D.painful 51.A.ask B.alow C.guess D.believe 52.A.putaway B.gaveout C.tookback D.pickedup 53.A.clasroom B.shop C.hospital D.restaurant 54.A.playing B.making C.using D.holding 55.A.call B.order C.need D.help 56.A.realize B.know C.buy D.forget 57.A.pass B.save C.teach D.tell 58.A.thought B.choice C.power D.dificulty 59.A.unless B.until C.if D.since 60.A.sound B.atitude C.moment D.idea
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15分Doyoueverstopandthinkaboutthisbigbeautifulworldwelivein?It'shome61somanypeopleandanimals.Weallliveinthisamazingplacesoweallhavethe62responsibletotakecareofittoo. AlongtimeagoIstartedthinkingaboutwhatIcoulddotohelptakecareoftheplanet.1wondered63Icouldusemytalentsforever.Ilovecreatingwebsitesandmakingartanddesigningclothes.That'swhat64inspiremeatage8tostartanonlinecompany.Igavepartofmyprofits利润toorganizations65trytheirbesttosaveourenvironment.AfterIlaunchedmybusinessIstartedgetting66invitetogivepresentationstoyoungpeopleaboutmycompanyandtheenvironment.Ialsotalkaboutsomethingelsethat67bemeaningful. OnethingI'velearnedisthatalotofpeoplethink68smallcontributiontoanycauseisjustadropinthebucket桶andwon'tmakeadifference.Butthat'snottrue!69actualwhenitcomestosavingourenvironmenteverysmallactioncounts.The70smallthingisbetterthanthegreatestintention. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
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8分Youwakeupinthemorningthedayisbeautifulandtheplansforthedayarewhatyouhavebeenlookingforwardtoforalongtime.Thenthetelephoneringsyousayhelloandthedramastarts.Thepersonontheotherendhasadepressingtoneinhisvoiceashestartstotellyouhowterriblehismorningisandthatthereisnothingtolookforwardto.Youarestillinawonderfulmood?Impossible! Communicatingwithnegativepeoplecanwashoutyourhappiness.Itmaynotchangewhatyouthinkbutcommunicatinglongenoughwiththemwillmakeyoufeeldepressedforamomentoralongtime.Lifebringsupsanddownsbutsomepeoplearestuckinthewrongideathatlifehasnohappinesstooffer.Theyonlyfeelgladwhentheymakeothersfeelbad.Nowondertheycanhardlywinothers'pityorrespect.Whenyoucommunicatewithpositivepeopleyourspiritstayshappyandthereforemorepositivethingsareattracted.Whenthedagger匕首ofanegativepersonisputinyouyoufeeltheheavyfeelingthatallinallbringsyoudown. Sometimeswehavenochoicebuttocommunicatewithnegativepeople.Thiscouldbeaco﹣workerorarelative.Inthiscasesaywhatneedstobesaidaslittleaspossible.Sometimesitfeelsgoodtoletoutyourangerbacktothenegativepersonbutallthisistoloweryoutothatsamenegativelevelandtheywon'tfeelashamedofthemselvesaboutthat. Negativityoftenaffectshappinesswithoutevenbeingrealized.Thenegativewordsofanotheratthestartofthedaycanclingto附着youthroughouttherestofyourdaywhichmakesyoufeelbadandstealsyourhappiness.Lifeistooshorttofeelnegative.Staypositiveandavoidnegativityasmuchaspossible. 21.Thepurposeofthefirstparagraphisto. A.makeacomparison B.offeranevidence C.introduceatopic D.describeadailyscene 22.Howcannegativepeoplehaveeffectonus? A.Bychangingourwaysofthinking B.Bytellingusthenatureoflife C.Byinfluencingouremotion D.Bycomparingtheirattitudestolifewithours 23.Somenegativepeoplebasetheirhappinesson. A.otherpeople'srespectforthem B.otherpeople'spityforthem C.buildingupapositiveattitude D.makingotherpeopleunhappy 24.Accordingtothepassagetoreducenegativepeople'sinfluenceonusweareadvisedto. A.showourdissatisfactiontonegativepeople B.communicatewithnegativepeopleaslittleaspossible C.changenegativepeople'sattitudestolife D.makenegativepeoplefeelashamedofthemselves.
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Wefinallyboughtahousemabouttwelvefeetbyfifteenfeet.Itreferstothingscanbeexpressedinnumberssuchasthelengthorwidth
感到高兴振奋.
8分Usuallywhenyourteacherasksaquestionthereisonlyonecorrectanswer.Butthereisonequestionthathasmillionsofcurrentanswers.ThatquestionisWhat'syourname?Everyonegivesadifferentanswerbuteveryoneiscorrect. Haveyoueverwonderedaboutpeople'snames?Wheredotheycomefrom?Whatdotheymean? People'sfirstnamesorgivennamesarechosenbytheirparents.Sometimesthenameofagrandparentorothermemberofthefamilyisused.Someparentschoosethenameofawell﹣knownperson.AboycouldbenamedGeorgeWashingtonSmithagirlcouldbenamedHelenKellerJones. Somepeoplegivetheirchildrennamesthatmeangoodthings.ClarameansbrightBeatricemeansonewhogiveshappinessDonaldmeansworldrulerLeonardmeansasbraveasalion. Theearliestlastnamesorsurnamesweretakenfromplacenames.AfamilywiththenameBrookorBrooksprobablylivednearbrook小溪SomeonewhowascalledLongstreetprobablylivedonalongpavedroad.TheGreenwoodfamilylivedinornearaleafyforest. Otherearlysurnamescamefrompeople'soccupations.ThemostcommonoccupationalnameisSmithwhichmeansapersonwhomakesthingswithironorothermetals.Inthepastsmithswereveryimportantworkersineverytownandvillage.SomeotheroccupationalnamesareCarter﹣apersonwhoownedordroveacartPotter﹣apersonwhomadepotsandpans. TheancestorsoftheBakerfamilyprobablybakedbreadfortheirneighborsintheirnativevillage.TheCarpenter'sgreat﹣great﹣great﹣grandfatherprobablybuilthousesandfurniture. Sometimespeoplewereknownforthecoloroftheirhairorskinortheirsizeortheirspecialabilities.WhenthereweretwomenwhowerenamedJohninthesamevillagetheJohnwiththegrayhairprobablybecameJohnGray.OrtheJohnwhowasverytallcouldcallhimselfJohnTallman.JohnFishwasprobablyanexcellentswimmerandJohnLightfootwasprobablyafastrunneroragooddancer. Somefamilynamesweremadebyaddingsomethingtothefather'sname.English﹣speakingpeopleadded﹣sor﹣son.TheJohnsonsaredescendantsofJohntheRobertsfamily'sancestorwasRobert.IrishandScottishpeopleaddedMacorMcorO.PerhapsalloftheMacDonnellsandtheMcDonnellsandtheO'DonnellsaredescendantsofthesameDonnell. 24.WhichofthefollowingaspectsdothesurnamesinthepassageNOTcover? A.Placeswherepeoplelived. B.People'sstatus. C.Talentsthatpeoplepossessed. D.People'soccupations. 25.AccordingtothepassagetheancestorsoftheCarpenterfamilymostprobably. A.ownedordroveacart B.madethingswithmetals C.madekitchentoolsorcontainers D.builthousesandfurniture 26.SupposeanEnglishcouplewhoseancestorslivednearaleafyforestwantedtheirnew﹣bornsontobecomeaworldleaderthebabymightbenamed. A.BeatriceSmith B.LeonardCarter C.GeorgeLongstreet D.DonaldGreenwood 27.Theunderlinedworddescendantsinthelastparagraphmeansaperson's. A.latergenerations B.friendsandrelatives C.colleaguesandpartners D.latersponsors.
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对…有天赋.
.5分Everythinghedidseemedreasonable.
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