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对于实数λ≠0，非空向量零向量，下列各式正确的是（ ）．
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体育教师招聘考试《单项选择》真题及答案
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下列说法中错误的是
零向量与任一非零向量平行
零向量与单位向量的模不相等
平行向量的方向相同
平行向量一定是共线向量
已知非零向量abc满足a+b+c=0向量ab的夹角为120°且|b|=2|a|求向量a与c的夹角
已知非零向量abc满足a＋b＋c＝0向量ab的夹角为120°且|b|＝2|a|则向量a与c的夹角为_
对于实数λ≠0非空向量零向量下列各式正确的是．
A
B
C
D
给出下列命题:①两个具有公共终点的向量一定是共线向量.②两个向量不能比较大小但它们的模能比较大小.③
1
2
3
0
在下列判断中正确的是①长度为0的向量都是零向量②零向量的方向都是相同的③单位向量的长度都相等④单位向
①②③
②③④
①②⑤
①③⑤
以下说法错误的是
零向量与任一非零向量平行
零向量与单位向量的模不相等
平行向量方向相同
平行向量一定是共线向量
对于实数λ≠0非空向量及零向量下列各式正确的是
选项A
选项B
选项C
选项D
对于空间非零向量aba⊥b⇔a·b＝0.
对于实数λ≠0非空向量及零向量下列各式正确的是．
选项A
选项B
选项C
选项D
下列说法不正确的是
向量的模是一个非负实数
任何一个非零向量都可以平行移动
长度不相等而方向相反的两个向量一定是共线向量
两个有共同起点且共线的向量终点也必相同
在下列命题中①若向量ab共线则向量ab所在的直线平行②若向量ab所在的直线为异面直线则向量ab一定不
0
1
2
3
在平面直角坐标系xOy中Ω是一个平面点集如果存在非零平面向量a对于任意点P.∈Ω都有点Q.∈Ω使得＋
1
2
3
4
下列关于单位向量与零向量的叙述正确的是
零向量是没有方向的向量，两个单位向量的模相等
零向量的方向是任意的，所有单位向量都相等
零向量的长度为
0
，单位向量不一定是相等向量
零向量只有一个方向，模相等的单位向量的方向不一定相同
对于实数λ≠0非空向量零向量下列各式正确的是．
A
B
C
D
关于零向量下列说法中错误的是
零向量是没有方向的。
零向量的长度是0
零向量与任一向量平行
零向量的方向是任意的。
在下列命题中①若向量ab共线则向量ab所在的直线平行②若向量ab所在的直线为异面直线则向量ab一定不
0
1
2
3
对于实数λ≠0非空向量及零向量下列各式正确的是
A
B
C
D
下列说法中不正确的是
零向量没有方向
零向量只与零向量相等
零向量的模为
0
零向量与任何向量都共线
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DuringourtwomonthsontheroadBennettandIhadareally1experiencewithagoodhonest2andsomehelpfulmechanics. WeweredrivingeastonHighway10whenour"chickengine"lightcameon.Welimpedofan3intoLasCruces.Wehadarealcar4Bennettnursedtheearintoalocalgarage.Bythistimethecarwasmissingso5itwasshakingallover.Thiswasthe6timetoarriveatagarage—lateFridayafternoon.ServiceadviserScottwasbusy7paperworkandcustomersaswe8ourproblems.9hewasalready"tencarsbehind"hetoldustopullthecarintothegarage. Lincolnwhowelater10wasoneofthetwomotortechnicianstook11ofourcarrepairing.HeandScottandsomeothermechanicsstayedseveralhoursafterclosing12thecar. EarlythenextmorningtheshopwasofficiallyclosedonSaturdaysLincolnfinallylocatedthe13andfixediteasilywithinonly14 LaterScott15outtousthatitwasourattitudethathelped."Youdidn’tcomeintotheplacedemandingthisorthat.Youshowedan16ofourproblemsonabusyFridayafternoon.Customer’sattitudemeansalot."Hewasrightinsomewaycustomersshouldshow17andunderstandingtopeoplewho18them.19peoplewereextremelybusytheyfoundwaytoatleasttryandhelpwhentheyaremetwithpoliteness. ThepleasantexperienceIhadshowsthat20forotherpeoplecanalwayshelp. 16.
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It’snoteasytobeanastronaut’sson.Everybodyexpectsyoutobespecialorperfect.Ioftenwonderhowmyfathereverhadasonlikeme.Imeanhe’ssospecialandsogoodateverythinghedoes.Eveninmiddleschoolhewasclasspresidentandcaptainofthefootballteam.WelltobehonestIoftendreamaboutbeingsomekindofheroordoingsomethingspecial-likesavingachildfromaburningbuildingordiscoveringanewstar.IwasdaydreamingatschoolonemorningwhenmyteachersaidtherewouldbeaFather’sDaywritingcompetitionforthewholeschool.Ihopewehaveawinnerrighthereinmyclass.WhenIgothomeIstartedtothinkaboutwhattowrite.Myfatherisanastronaut.NoIwouldn’tstartlikethat.Thatwasthewayotherssawhim.HowdidIseemyfatherHmm.IsawhimsittingwithmeinthedarkwhenIhadaterribledream.IrememberedhowhehuggedmeforhourswhenmydogSpottywaskilledbyacar.YesthesewerethethingsIwasgoingtowrite.Tomehewasn’tjustaworld-famousastronaut.Hewasmydad.MyparentsandIwenttoschoolThursdaynight.Thereweresomanypeopleinthebighall!MydadlookedatmeandIshrugged耸肩.Thethirdprizewasannouncedanditwasnotme.Iwasrelieved释然anddisappointedatthesametime.Thesecondprizewasannounced.Itwasme.IwentuptothestageandreadwhatIhadwrittenMyFather’sSon.WhenIfinishedthepeoplestoodupandcheered.Isawmyfatherblowinghisnose.Tearswererunningdownmymother’sface.Dadclearedhisthroatandputhishandonmyshoulder.Sonthisistheproudestmomentofmylife.Itwastheproudestmomentofmylifetoo.MaybeI’llneverbeagreatheroorwinaNobelPrizebutitwasenoughjusttobemyfather’sson.Thewriterfeltproudwhenhe______.
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请根据下列提示以RoadSafety为题写一篇短文字数120～150 提示 每年有不少人在交通事故中伤亡为使交通安全要牢记如下交通规则 1骑车要靠右行 2遇见红灯时不能向左拐或横穿马路 3转弯或停车时要打手势 4穿过马路要做到一停二看三通过 5要帮助老人或孩子安全穿过马路 6要教育小孩不要在马路上玩耍或骑车
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Solongasteachersfailtodistinguishdifferbetweenteachingandlearningtheywillcontinuetoundertaketodoforchildrenthatwhichonlychildrencandoforthemselves.Teachingchildrentoreadisnotpassingreadingontothem.Itiscertainlynotendlesshoursspentinactivitiesaboutreading.Douglasinsiststhat"readingcannotbetaughtdirectlyandschoolsshouldstoptryingtodotheimpossible". Teachingandlearningaretwoentirelydifferentprocesses.Theydifferinkindandfunction.Thefunctionofteachingistocreatetheconditionsandtheclimatethatwillmakeitpossibleforchildrentoplancleverlythemostefficientsystemforteachingthemselvestoread.Teachingisalsoapublicactivity.Itcanbeseenandobserved. Learningtoreadinvolvesallthateachindividualdoestounderstandtheworldofprintedlanguage.Almostallofitisprivateforlearningisanoccupationofthemindandthatprocessisnotopentopublicscrutiny. IfteacherandlearnerrolesarenotinterchangeablewhatthencanbedonethroughteachingthatwillaidthechildinthelongsearchforknowledgeSmithhasoneprincipleruleforallteachinginstructions."Makelearningtoreadeasywhichmeansmakingreadingameaningfulenjoyableandfrequentexperienceforchildren." Whentherolesofteacherandlearnerareseenforwhattheyareandwhenbothteacherandlearnerfulfillthemproperlythenmuchofthepressureandfeelingoffailureforbothisgotridof.Learningtoreadismadeeasierwhenteacherscreateanenvironmentwherechildrenaregiventhechancetosolvetheproblemoflearningtoreadbylearning. Theteachingofreadingwillbesuccessfulif.
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HowtoprotectchildrenWebfansfromunsuitablematerialon-linewhileencouragingthemtousetheInternethaslongbeendiscussedintheUS.ForsomeparentstheInternetcanseemlikeajunglefilledwithdangerfortheirchildren.ButjunglescontainwondersaswellasdangersandwithgoodguidessomeeducationandafewprecautionsthewildsoftheInternetcanbesafelynavigated.Kidshavetobeon-line.Ifwetellourkidstheycan’thaveaccesstotheInternetwe’recuttingthemofffromtheirfuturesaidanexpert.Mostkidshavestartedtousesearchengines.ManyofthemaregreatforfindingtonsofinterestingInternetsitesandtheycanalsolocateplaceswhereyoumightnotwantyourkidstogo.Therearesearchenginesdesignedjustforkids.Acertainsoftwarecontainsonlysitesthathavebeenselectedassafe.Themostpopularwaytolimitaccesswouldbetousewhatisknownasacontentscreener.Butthiscan’tbewhollyreliableandthebestthingparentscandoistotalktotheirkidsandletthemknowwhatisOKornotOKtoseeordoontheInternet.AnotherwayisthatmumordadisnearbywhenthechildissurfingtheInternet.Afewothertips·Don’tputthePCinachild’sroombutkeepitinanareawheremumordadcankeepaneyeonthings.ThatalsomakestheInternetmoreofafamilyactivity.·Askyourchildwhatheorshehasbeendoingandaboutanyfriendstheymakeon-line.·Tellyourchildnottogiveon-linestrangerspersonalinformationespeciallylikeaddressandphonenumber.·Andtellyourchildrennevertotalktoanyonetheymeeton-lineoverthephonesendthemanythingacceptanythingfromthemoragreetomeetwiththemunlessyougoalong.Accordingtothepassagewecaninferthat______.
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Solongasteachersfailtodistinguishdifferbetweenteachingandlearningtheywillcontinuetoundertaketodoforchildrenthatwhichonlychildrencandoforthemselves.Teachingchildrentoreadisnotpassingreadingontothem.Itiscertainlynotendlesshoursspentinactivitiesaboutreading.Douglasinsiststhat"readingcannotbetaughtdirectlyandschoolsshouldstoptryingtodotheimpossible". Teachingandlearningaretwoentirelydifferentprocesses.Theydifferinkindandfunction.Thefunctionofteachingistocreatetheconditionsandtheclimatethatwillmakeitpossibleforchildrentoplancleverlythemostefficientsystemforteachingthemselvestoread.Teachingisalsoapublicactivity.Itcanbeseenandobserved. Learningtoreadinvolvesallthateachindividualdoestounderstandtheworldofprintedlanguage.Almostallofitisprivateforlearningisanoccupationofthemindandthatprocessisnotopentopublicscrutiny. IfteacherandlearnerrolesarenotinterchangeablewhatthencanbedonethroughteachingthatwillaidthechildinthelongsearchforknowledgeSmithhasoneprincipleruleforallteachinginstructions."Makelearningtoreadeasywhichmeansmakingreadingameaningfulenjoyableandfrequentexperienceforchildren." Whentherolesofteacherandlearnerareseenforwhattheyareandwhenbothteacherandlearnerfulfillthemproperlythenmuchofthepressureandfeelingoffailureforbothisgotridof.Learningtoreadismadeeasierwhenteacherscreateanenvironmentwherechildrenaregiventhechancetosolvetheproblemoflearningtoreadbylearning. Themainideaofthepassageisthat.
HowtoprotectchildrenWebfansfromunsuitablematerialon-linewhileencouragingthemtousetheInternethaslongbeendiscussedintheUS.ForsomeparentstheInternetcanseemlikeajunglefilledwithdangerfortheirchildren.ButjunglescontainwondersaswellasdangersandwithgoodguidessomeeducationandafewprecautionsthewildsoftheInternetcanbesafelynavigated.Kidshavetobeon-line.Ifwetellourkidstheycan’thaveaccesstotheInternetwe’recuttingthemofffromtheirfuturesaidanexpert.Mostkidshavestartedtousesearchengines.ManyofthemaregreatforfindingtonsofinterestingInternetsitesandtheycanalsolocateplaceswhereyoumightnotwantyourkidstogo.Therearesearchenginesdesignedjustforkids.Acertainsoftwarecontainsonlysitesthathavebeenselectedassafe.Themostpopularwaytolimitaccesswouldbetousewhatisknownasacontentscreener.Butthiscan’tbewhollyreliableandthebestthingparentscandoistotalktotheirkidsandletthemknowwhatisOKornotOKtoseeordoontheInternet.AnotherwayisthatmumordadisnearbywhenthechildissurfingtheInternet.Afewothertips·Don’tputthePCinachild’sroombutkeepitinanareawheremumordadcankeepaneyeonthings.ThatalsomakestheInternetmoreofafamilyactivity.·Askyourchildwhatheorshehasbeendoingandaboutanyfriendstheymakeon-line.·Tellyourchildnottogiveon-linestrangerspersonalinformationespeciallylikeaddressandphonenumber.·Andtellyourchildrennevertotalktoanyonetheymeeton-lineoverthephonesendthemanythingacceptanythingfromthemoragreetomeetwiththemunlessyougoalong.Thebestwaytoprotectchildrenfromimpropermaterialis______.
下列选项中不受政治经济制度影响的是______
WhenDavewaseighteenheboughtasecondhandcarfor200sothathecouldtraveltoandfromworkmore1thanbybus.Itworkedquitewellforafewyearsbutthenitgotsooldanditwascostinghim2muchinrepairsthathedecidedthathehadbetter3it. Heaskedamonghisfriendstoseeifanyonewasparticularly4tobuyacheapcarbuttheyallknewthatitwasfallingtopiecesso5ofthemhadanydesiretobuyit.Dave’sfriendSamsawthathewas6whentheymetoneeveningandsaid"What’s7Dave" DavetoldhimandSamanswered"WellwhataboutadvertisingitinthepaperYoumay8moreforitthatwaythanthecostoftheadvertisement!"ThinkingthatSam’s9wassensibleheputanadvertisementinaneveningpaperwhichread"Forsale:smallcar10verylittlepetrolonlytwoowners.Bargainat50."Fortwodaysaftertheadvertisementfirstappearedtherewasno11.ButthenonSaturdayeveninghehadanenquiry.Amanrangupandsaidhewouldliketo12himaboutthecar."Allright"Davesaidfeelinghappy.Heaskedthemanwhetherteno’clockthenextmorningwouldbe13ornot."Fine"themansaid"andI’ll14mywife.Weintendtogoforarideinitto15it." ThenextmorningataquartertotenDaveparkedthecarinthesquareoutsidehisfrontdoor16towaitthereforthepeoplewhohad17hisadvertisement.EvenDavehadto18thatthecarreallylookedlikeawreck.Thensoonafterhehadgotthecarasclean19itcouldbeapolicecarstoppedjustbehindhimandapolicemangotout.HelookedatDave’scarandthensaid"Haveyoureportedthis20tousyetsir/ 1.
Wehadareallybadtimeaboutsixmonthsagobutnowthingsare.
Therearetwotypesofpeopleintheworld.Althoughtheyhaveequaldegreeofhealthandwealthandothercomfortsoflifeonebecomeshappyandtheotherbecomesunhappy.Thisarisesfromthedifferentwaysinwhichtheyconsiderthingspersonseventsandtheresultingeffectsupontheirminds. Peoplewhoaretobehappyfixtheirattentionontheconvenienceofthings;thepleasantpartsofconversationthewellprepareddishesthegoodnessofthewineandthefineweather.Theyenjoyallthecheerfulthings.Thosewhoaretobeunhappythinkandspeakonlyoftheoppositethings.Thereforetheyarecontinuallydissatisfied.Bytheirremarkstheysourthepleasureofsocietyoffendhurtmanypeopleandmakethemselvesdisagreeableeverywhere.Ifthisturnofmindwasfoundedinnaturesuchunhappypersonswouldbethemoretobepitied.Theintentionofcriticizingandbeingdislikedisperhapstakenupbyimitation.Itgrowsintoahabitunknowntoitspossessors.Thehabitmaybestrongbutitmaybecuredwhenthosewhohaveitrealizeitsbadeffectsontheirinterestsandtastes.Ihopethislittlewarningmayheofservicetothemandhelpthemchangethishabit. Althoughinfactitischieflyanactoftheimaginationithasseriousresultsinlifesinceitbringsondeepsorrowandbadluck.Thosepeopleoffendmanyothers;nobodylovesthemandnoonetreatsthemwithmorethanthemostcommonpolitenessandrespect.Thisfrequentlyputstheminbadtemperanddrawsthemintoarguments.Iftheyaimatgettingsomeadvantagesinsocialpositionorfortunenobodywishesthemsuccess.Norwillanyonestartasteporspeakawordtofavortheirhopes.Iftheybringonthemselvespublicobjectionsnoonewilldefendorexcusethemandmanywilljointocriticizetheirwrongdoings.Theseshouldchangethisbadhabitandbepleasedwithwhatispleasingwithoutworryingneedlesslyaboutthemselvesandothers.Iftheydonotitwillbegoodforotherstoavoidanycontactwiththem.Otherwiseitcanbedisagreeableandsometimesveryinconvenientespeciallywhenonebecomesmixedupintheirquarrels. Wecanconcludefromthepassagethat.
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