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已知平面向量=(2,2),=(x,﹣1) (Ⅰ)若∥,求x (Ⅱ)若⊥(﹣2),求与所成夹角的余弦值
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高一下学期数学《》真题及答案
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在复平面内复数i•1﹣i对应的点位于
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Duringtherosyyearsofelementaryschool小学Ienjoyedsharingmydollsandjokeswhichallowedmetokeepmyhighsocialstatus.Iwasthequeenoftheplayground.Thencamemytweensandteensandmeangirlsandcoolkids.TheyroseintheranksnotbybeingfriendlybutbysmokingcigarettesbreakingrulesandplayingjokesonothersamongwhomIsoonfoundmyself. Popularityisawell﹣exploredsubjectinsocialpsychology.MitchPrinsteinaprofessorofclinicalpsychologysortsthepopularintotwocategoriesthelikableandthestatusseekers.Thelikables'plays﹣well﹣with﹣othersqualitiesstrengthenschoolyardfriendshipsjump﹣startinterpersonalskillsandwhentappedearlyareemployedeverafterinlifeandwork.Thenthere'sthekindofpopularitythatappearsinadolescencestatusbornofpowerandevendishonorablebehavior. EnviableasthecoolkidsmayhaveseemedDr.Prinstein'sstudiesshowunpleasantconsequences.Thosewhowerehighestinstatusinhighschoolaswellasthoseleastlikedinelementaryschoolaremostlikelytoengage从事indangerousandriskybehavior. InonestudyDr.Prinsteinexaminedthetwotypesofpopularityin235adolescentsscoringtheleastlikedthemostlikedandthehighestinstatusbasedonstudentsurveys调查研究.Wefoundthattheleastwell﹣likedteenshadbecomemoreaggressiveovertimetowardtheirclassmates.Butsohadthosewhowerehighinstatus.Itclearlyshowedthatwhilelikabilitycanleadtohealthyadjustmenthighstatushasjusttheoppositeeffectonus. Dr.Prinsteinhasalsofoundthatthequalitiesthatmadetheneighborswantyouonaplaydate﹣sharingkindnessopenness﹣carryovertolateryearsandmakeyoubetterabletorelateandconnectwithothers. InanalyzinghisandotherresearchDr.PrinsteincametoanotherconclusionNotonlyislikabilityrelatedtopositivelifeoutcomesbutitisalsoresponsibleforthoseoutcomestoo.Beinglikedcreatesopportunitiesforlearningandfornewkindsoflifeexperiencesthathelpsomebodygainanadvantagehesaid. 1Whatsortofgirlwastheauthorinherearlyyearsofelementaryschool? A.Unkind. B.Lonely. C.Generous. D.Cool. 2Whatisthesecondparagraphmainlyabout? A.Theclassificationofthepopular. B.Thecharacteristicsofadolescents. C.Theimportanceofinterpersonalskills. D.Thecausesofdishonorablebehavior. 3WhatdidDr.Prinstein'sstudyfindaboutthemostlikedkids? A.Theyappearedtobeaggressive. B.Theytendedtobemoreadaptable. C.Theyenjoyedthehigheststatus. D.Theyperformedwellacademically. 4Whatisthebesttitleforthetext? A.BeNice﹣YouWon'tFinishLast B.TheHighertheStatustheBetter C.BetheBest﹣YouCanMakeIt D.MoreSelf﹣ControlLessAggressiveness
用分析法证明.
假定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写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错的词下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. Ibecameinterestinginplayingfootballthankstoasmallaccident.OneafternoonwhereIwasinprimaryschoolIwaswalkingbytheschoolplayground.Suddenlyfootballfelljustinfrontofmebutalmosthitme.Istoppedtheballandkickedithardlybacktotheplayground.Toeveryone′ssurprisingtheballwentintothenet.AllthefootballplayerontheplaygroundcheeredloudlysaythatIhadatalentforfootball.FromnowonIstartedtoplaymyfootballwithclassmatesafterschool.Iamagoodplayernow.
Everyyearabout40000peopleattempttoclimbKilimanjarothehighestmountaininAfrica.They1withthemlotsofwaste.The2mightdamagethebeautyoftheplace.Theglaciers冰川aredisappearingchangingthe3ofKilimanjaro. HearingthesestoriesI'm4abouttheplace﹣otherdestinationsaredescribedaspurernaturalexperiences. HoweverIsoon5thatmuchhaschangedsincethedaysofdisturbingreportsof6amongtonsofrubbish.Ifinda7mountainwithtoiletsatcampsandalongthepaths.Theenvironmentalchallengesare8buttheeffortsmadebytheTanzaniaNationalParkAuthorityseemtobe9. ThebestofaKilimanjaro10inmyopinionisn'treachingthetop.Mountainsare11asspiritualplacesbymanycultures.This12isespeciallyevidentonKilimanjaroas13gothroughfiveecosystems生态系统inthespaceofafewkilometers.Atthebaseisarainforest.Itendsabruptlyat3000meters14landsoflowgrowingplants.Furtheruptheweather15﹣lowcloudsenvelopethemountainsideswhicharecoveredwiththickgrass.I16twelveshadesofgreenfromwhereIstand.Above4000metersisthehighland17gravel砾石stonesandrocks.18youclimbintoanarctic﹣likezonewith19snowandtheglaciersthatmaysoondisappear. DoesKilimanjaro20itsreputationasacrowdedmountainwithlinesoftouristsruiningtheatmosphereofpeace?Ifoundtheoppositetobetrue. 1A.keep B.mix C.connect D.bring 2A.stories B.buildings C.crowds D.reporters 3A.position B.age C.face D.name 4A.silent B.skeptical C.serious D.crazy 5A.discover B.argue C.decide D.advocate 6A.equipment B.grass C.camps D.stones 7A.remote B.quiet C.all D.clean 8A.new B.special C.significant D.necessary 9A.payingoff B.spreadingout C.blowingup D.fadingaway 10A.atmosphere B.experience C.experiment D.sight 11A.studied B.observed C.explored D.regarded 12A.view B.quality C.reason D.purpose 13A.scientists B.climbers C.locals D.officials 14A.holdingonto B.goingbackto C.livingupto D.givingwayto 15A.changes B.clears C.improves D.permits 16A.match B.imagine C.count D.add 17A.village B.desert C.road D.lake 18A.Obviously B.Easily C.Consequently D.Finally 19A.permanent B.little C.fresh D.artificial 20A.enjoy B.deserve C.save D.acquire
在复平面上复数对应的点位于
ForCanaanElementary'ssecondgradeinPatchogueN.Y.todayisspeechdayandrightnowit'sChrisPalaez'sturn.The8﹣year﹣oldisthejokeroftheclass.Withshiningdarkeyesheseemslikethekindofkidwhowouldenjoypublicspeaking. Buthe'snervous.I'mheretotellyoutodaywhyyoushould…should…Christripsonthe﹣ldapronunciationdifficultyformanynon﹣nativeEnglishspeakers.HisteacherThomasWhaleyisnexttohimwhisperingsupport.…Votefor…me…ExceptforsomestumblesChrisisdoingamazinglywell.WhenhebringshisspeechtoaniceconclusionWhaleyinvitestherestoftheclasstopraisehim. AsonofimmigrantsChrisstartedlearningEnglishalittleoverthreeyearsago.Whaleyrecalls回想起howatthebeginningoftheyearwhencalledupontoreadChriswouldexcusehimselftogotothebathroom. LearningEnglishasasecondlanguagecanbeapainfulexperience.Whatyouneedisagreatteacherwholetsyoumakemistakes.IttakesalotforanystudentWhaleyexplainsespeciallyforastudentwhoislearningEnglishastheirnewlanguagetofeelconfidentenoughtosay‘Idon'tknowbutIwanttoknow.' Whaleygottheideaofthissecond﹣gradepresidentialcampaignprojectwhenheaskedthechildrenonedaytoraisetheirhandsiftheythoughttheycouldneverbeapresident.Theanswerbrokehisheart.Whaleysaystheprojectisaboutmorethanjustlearningtoreadandspeakinpublic.Hewantsthesekidstolearntoboast夸耀aboutthemselves. BoastingaboutyourselfandyourbestqualitiesWhaleysaysisverydifficultforachildwhocameintotheclassroomnotfeelingconfident. 1WhatmadeChrisnervous? A.Tellingastory. B.Makingaspeech. C.Takingatest. D.Answeringaquestion. 2Whatdoestheunderlinedwordstumblesinparagraph2referto? A.Improperpauses. B.Badmanners. C.Spellingmistakes. D.Sillyjokes. 3WecaninferthatthepurposeofWhaley'sprojectisto. A.helpstudentsseetheirownstrengths B.assessstudents'publicspeakingskills C.preparestudentsfortheirfuturejobs D.inspirestudents'loveforpolitics 4WhichofthefollowingbestdescribesWhaleyasateacher? A.Humorous. B.Ambitious. C.Caring. D.Demanding.
现在很多人喜欢在交流时使用网络语言包括拼音或者英文字母的缩写含有某种特定意义的数字以及形象生动的网络动画和图片.如886代表再见表示微笑等.就此现象你班最近举行了一场讨论会.请根据下面的提示写一篇短文介绍一下讨论的情况并发表自己的看法. 60%的同学认为 1.网络语言简洁可以节约时间加快交流 2.网络语言幽默活泼有助于表达思想. 40%的同学认为 1.网络语言荒诞有时难以理解 2.有些表达方式违背语法规则. 注意1.开头已经给出 2.参考词汇荒诞的ridiculous. NowadayswiththedevelopmentoftheInternetakindoflanguagecalledWebLanguagehascomeintobeing.
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