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七巧板是一种古老的中国传统智力玩具，是由七块板组成的，而这七块板可拼成许多图形，例如：三角形、不规则多边形、各种人物、动物、建筑物等，清陆以淮《冷庐杂识》写道：近又有七巧图，其式五，其数七，其变化之...
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高三下学期数学《》真题及答案
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七巧板是我们祖先创造的一种智力玩具它来源于勾股法如图1整幅七巧板由正方形ABCD分割成七小块其中五
七巧板是一种古老的中国传统智力玩具是由七块板组成的．如图在七巧板拼成的正方形中任取一点该点取自图中
七巧板是中国民间益暂玩具用正方形薄板分裁为七块拼排成多种多样的事物图形玩七巧板可以培养儿童的观察力空
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七巧板
徐老师带50元买七巧板每盒七巧板3.50元可以买多少盒七巧板
七巧板是我们祖先创造的一种智力玩具它来源于勾股法如图1整幅七巧板是由正方形ABCD分割成大小七块其
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七巧板是我国民间广为流传的一种益智玩具在百度搜索引擎中输入七巧板能搜索到与之相关的网页约39000
七巧板是一种传统智力游戏是中国古代劳动人民的发明用七块板可拼出许多有趣的图形．在下面这些用七巧板拼
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七巧板塑料制
七巧板被西方人称为东方魔板.下面的两幅图是由同一副七巧板拼成的.已知七巧板拼成的正方形如图a的边长为
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如图方格纸中的每个小方格都是边长为1个单位长度的正方形每个小正方形的顶点叫格点△ABC的顶点均在格点上OM也在格点上．1画出△ABC先向右平移5个单位长度再向下平移5个单位长度得到的△A'B'C'2画出△ABC关于直线OM对称的△A1B1C13画出△ABC绕点O按顺指针方向90°后所得的△A2B2C24△A1B1C1与△A2B2C2组成的图形是轴对称图形吗如果是轴对称图形请画出对称轴．
Don'tforgetmethisevening.A.tocall B.call C.calls D.calling
Lisaisofmedium体格andshehascurlyhair.
Imaginethatyou'rethecreatorandshowrunnerofthenewestcomedyshowontelevision.Onlyitisn'tsopopularyetandyourliveStudioaudienceisn'tgivingyouthebiglaughstheshowdeserves.Doyoufilmtheshowalloveragainhopingthatthistimetheaudiencewilllaugh?Oristhereanotheroptionformakingajokesoundfunnierthanitwasreceived? Sweeten改善thesoundbyaddingalaughtrack!Sweeteningortheadditionofsoundeffectssuchaslaughsscreamsandotheraudience-producednoisestotheaudiotrackofaTVshowhasbeenusedsincethe1940stoproducetheappearanceorratherthesoundofanengagedandentertainedresponsetoashow'scomedy.Laughtrackscameintoexistenceasnotonlyasolutionandsometimesreplacementforanunengagedliveaudiencebutalsoasawaytoengageanat-homeaudienceintoamore-traditionalpublicandtheaterlikeexperience.Addingalaughtracktoatelevisionshowmakestheviewersathomefeelmuchlesslikethey'resittingonacouchstaringatthetelevisionscreenandmuchmorelikethey'reinaroomfulloflaughinghappypeopletovaryingdegreesofsuccess. Thoughtheartofsweeteninghasrisenandfalleninpopularityoverthepast60yearscreditforitscreationandcontinueduseisowedtolaugh-trackpioneerandsoundengineerCharlesDouglass.Douglasswasthefirsttodevelopin1953amachineforproducingcannedlaughteraccessibleatthepushofabuttonorpullofalever操纵杆.Despitebeingartificialsensiblyeditedlaughtracksarefoundbytelevisionstudiostobringaboutapositiveaudienceresponseastheiruseisusuallyaccompaniedbyhigherratingsandincreasedaudiencememory.Thoughsometelevisionaudiencesmaydisagreewiththevalueofthelaughtrackthecheerfulandrepetitivesoundholdsapermanentplaceinthehistoryandfutureoftelevisioncomedy. 1Theauthorusesthefirstparagraphto. A.introducethetopicsweetening B.seeksolutionsfortheproblem C.pointoutawayofmakingcomedies D.arousereaders'interestincomedies 2Whateffectdoesalaughtrackproduce? A.Thecreationofashow. B.Funniersoundinashow C.Moreengagedliveaudience D.CommunicationamongTVviewers. 3What'stheauthor'sattitudetowardstheuseofthelaughtrack? A.Doubtful. B.Positive. C.Neutral中立的. D.Uncertain 4Whatdoesthepassagemainlytalkabout? A.Thereasonforusinglaughtracks. B.Thebriefhistoryoflaughtracks. C.ThedevelopmentofTVcomedies. D.Thewaytoimprovetelevisionshows.
Wecaneatinthecafeteria.Butweeatintheclassroom.A.don't B.didn't C.can't D.aren't
【定义】在同一直线上的三点ABC若满足点C到另两个点AB关系则我们就称点C是其余两点的强点或弱点．具体地①当点C在线段AB上时若CA=2CB则称点C是【AB】的强点若CB=2CA则称点C是【BA】的强点②当点C在线段AB的延长线上时若CA=2CB则称点C是【AB】的弱点【例如】如图数轴上点ABCD分别表示数-1210则点C是【AB】的强点又是【BC】的弱点【应用】Ⅰ．如图MN为数轴上两点点M所表示的数为-2点N所表示的数为4．【MN】的强点表示的数为．【NM】的弱点表示的数为．Ⅱ．如图数轴上点A所表示的数为-20点B所表示的数为40一只电子蚂蚁P从点P从点B出发以4个单位每秒的速度沿数轴向左运动男设运动时间为t秒．①求当t为何值时P是【BA】的弱点．②求当t为何值时PAB三个点中恰有一个点为其余两点的强点．
It'srainingalldaysoIstayathome.A.must B.haveto C.mustto D.can
—WhatdidMaryhavebreakfastthismorning?—Shegotuplateandhurriedtoschoolbreakfast.A.forwithout B.atwithout C.forafter D.atafter
Hehastoby10:00o'clock.A.beinbed B.isbed C.staybed D.liebed
不等式x≤1的解集在数轴上表示正确的是
Hismotherisillfortwodays.A.inbed B.onbed C.inthebed D.onthebed
CanyourTony'stelephonenumber?Iwanttocallhim.
Healwayswearsapairofheavyglass.
Don'ttalkinthelibrary.A.loud B.loudly C.low D.lowly
SunYuemyfavoritemusicianhavelongstraighthair.
解不等式组并把解集在数轴上表示出来
若x=-1是关于x的方程2x-a=0的解则a的值是
TiredofWorkinginYourCountry? Withover500instructorsand20yearsofexperiencewearetheleaderinthefieldofteachingforeignlanguages.WenowhavepositionsopeninOsakastartingSeptember/October2018forinstructionsofEnglishGermanSpanishandFrench. ●Teachmanydifferentkindsofclassesusingthelatesttechnologyinsmallclassesofupto30students. ●Accommodationandothernecessarydocumentswillbereadybeforeyouleave. ●Applicantswillteachtheirfirstlanguageonly. ●Excellentteachertrainingprograms. Ifyouareyoungwithauniversitydegreeandarewillingtoexperiencedifferentculturesapplynow.Experienceinteachingisanadvantagebutnotspeciallyrequired.KnowledgeoftheJapaneselanguageisnotnecessarybutgoodEnglishskillsandpracticalcomputerknowledgearebasicrequirements. ApplywithC.V.andsendlettertoNOVAFranceMr.SampyIHT3/2 34Bd.Haussmann75009ParisFrance Fax33148014804 Orvisitourwebsitewww.teachjp.com ThemanagerexpectstomeetandtalkwithsuccessfulapplicantsinParisinJuneandJuly. 1Whatisthepurposeofthetext? A.TointroducealanguageschoolinJapan. B.TodescribeworkingconditionsinJapan. C.TomakecleartherequirementsforJapaneseteachers. D.TohirelanguageteacherstoworkinJapan. 2WeknowfromthetextthatthosewhoaregoingtoJapanwill. A.gettrainedforthejob B.receiveadegreefromauniversity C.havefreeaccommodation D.teachEnglishonlyinOsaka 3BeforegoingtoJapanyouneed. A.toseethemanagerofNOVAFrance B.totakesomecomputercourses C.towritealettertoJapan D.tofindaplacetolive 4IfyouwanttoworkinJapanyoushould. A.havesomeworkingexperience B.knowhowtousecomputers C.presentgoodteachingplans D.speakseverallanguages
如图将△ABC绕点A逆时针旋转一定角度得到△ADE若∠CAE=65°∠E=70°且AD⊥BC则∠BAC的度数为
RedisaparticularlypopularcolorinChina.Apairofredshoes-1theyareforsportsdancesorjustfashion-isamust-haveforeveryChinesewoman'sshoecollection.FormostChinesebridesredshoesshouldalsobeworn2theirbigday. Aswomen'sfeet3connectwithfemaleattractionredshoesoftenemphasizethisaspect4conveyaspecialbeauty.InsomeclassicChinesenovelsthereare5describeofcharmingwomeninredsilkshoes. Ifyouwearadarkdressincold6seasonapairofredshoescanraiseyourensemble整套服装toa7highlevel.Theycanalsogowithdifferentlevelsofredcolor8givetheweareralivelyandjoyfullook. 9sureredwillalwaysbeabelovedcolorfordesignersandredshoeshavealsobecomeachoiceformanysupermodels.Ifyouarealsoafanofthis10energycolorconsiderwearingapairofredshoesforeveryChineseLunarNewYear!
TheFiveBestCountriesTOMoveToForRetirement Retiringinadifferentcountryisgamingpopularity.Belowarefiveofthebestcountriestoseekretirement CostaRica Mildclimatebreathtakinglandscapesandbeachesdrawretirees退休人员toCostaRica.Thecountryreadilywelcomesimmigrantsandoffersasimpleresidencyprocess.Withamonthlyincomeofatleast﹩1000permonthfromSocialSecurityorasimilarsourcepeopleenjoyahighstandardoflivingatamuchlowercostthantheU.S. Malaysia RetireeswhochoosetomakeMalaysiahomewillappreciateitsrichcultureandattractivescenery.Moreoverthecountryoffersmodernfacilitiesatmodestprices.Immigrantsenjoyconvenienceandcomfortintheirdailylife.Youwillfindlow-costrentalunitsdeliciousstreetfoodandvariousshoppingmalls. Mexico Becauseit'sclosetotheU.S.MexicodrawsmorethanamillionAmericanretireestoitsborders.Increasingimmigrantcommunitiesenjoyseasidelivingandconversationswithfriendly.Englishspeakinglocals.Pluslegalresidentsovertheageof60receiveairlinegroceryandrestaurantdiscounts. Panama Gentleoceanwindtakestheheatoutofhotyear-roundtemperatureswhichhasbeenthechiefattractiontoforeignretirees.BeautifulbeachesandaboomingeconomyalsoattractretireestoPanama.Anincomeof﹩2000permonthcoversmodestlivingcosts.Furthermorethecountryoffersdiscountstoretireeswithaspecialvisa. Ecuador Lazycoastaltownssun-shininghotspotsandnature-filledviewswaitforimmigrantsseekingacarefreelifestyle.PublictransportationcostsinEcuadormakeowningavehicleunnecessary.Abusrideonlycosts25centsandtaxirideswillrunabout﹩3. 1WhatdoCostaRicaandMalaysiahaveincommon? A.Convenientshopping. B.Relativelylowlivingcost. C.Variousculturalactivities. D.Simpleimmigrationprocedures. 2Whichcountry'slocationspeciallyattractsretireesfromtheU.S.? A.Malaysia's. B.Ecuador's. C.Panama's. D.Mexico's. 3WhatisthemainreasonforretireestochoosePanama'? A.Beautifulbeaches. B.Aboomingeconomy. C.Apleasantclimate. D.Discountsforretirees.
已知∠MON=80°OE平分∠MON点ABC分别是射线OMOEON上的运动ABC不与点O重点连接AC交射线OE于点D．设∠OAC=x．1如图1若AB∥ON则∠ABO的度数是2如图2当∠BAD=∠ABD时试求x的值要说明理由3如图3若AB⊥OM则是否存在这样的x值使得△ADB中有两个相等的角若存在直接写出x的值若不存在说明理由．自己画图
Takingonapart-timejobwhilepursuingadegreeishardworkbuttherearegreatbenefitsfromthat.Studentswithpart-timejobscaneamtheirownmoneydevelopgoodtime-managementskillsandgainexperienceintheworkplace. 1Astheycomeintoadulthoodearninganincomecanincreasetheirconfidence.Somestudentsneedtoworkthroughschooltoaffordtuition.2Stillthemoneywillbetheirstospendastheywishandtheymayappreciateitmorebecausetheyworkedforit. Studentstakingonajobontopoftheirstudieswillhavelessfreetimethannon-workingstudents.3Theylearntoskipfunactivitiestofinishtheirresponsibilities.Thispreparesthemforlifeafterschoolwhentheycan'tfindexcusesforworkthat'snotfinishedintime Oftenstudentstakejobsthatintroducethemtotheirpreferredcareerafterschoolisover.4Evenstudentswhoworkinplacesnotconnectedtotheirmajorswilllookmoreimpressivetopotentialemployers.Employerslookforemployeeswhounderstandtheworkenvironmentandworkwellaspartofateam.5Thatwillmakeitmucheasierforthemtochangetheirrolesafterleavingschool. A.Otherswillsetthemoneyasidetopaybackstudentloans. B.Otherstudentsmayhavetogethelpfromtheirparents. C.Studentshavingpart-timejobsusuallygetemployedeasilyaftergraduation. D.Havingapart-timejobhelpsstudentstogetaccustomedtotheprofessionalworld. E.Theytendtobebetterplannersastheymakesuretheycompleteeverytaskondeadline. F.Studentswhotakepart-timejobswillhavemoremoneythantheywouldhaveotherwise. G.Thisallowsthemtogainexperienceinthebusinessandbeginmeetingpeopleinthatfield.
若关于xy的二元一次方程组的解满足x+y≤0则m的取值范围是
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