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在平面直角坐标系xOy中，角θ的顶点在原点，始边与x轴的非负半轴重合，终边经过点（-3，1），则cos2θ＝（ ）
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高三下学期数学《》真题及答案
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在直角坐标系xOy中以原点O.为极点x轴的正半轴为极轴建立极坐标系.曲线C.1的参数方程为t为参数曲
在平面直角坐标系xOy中若角α的始边与x轴的正半轴重合终边在射线y＝－xx＞0上则sin5α＝.
测量平面直角坐标系与数学直角坐标系有3点不同测量坐标系以过原点的子午线为X轴测量坐标系以X轴正向为始
逆时针定方位角与象限
逆时针定象限角与象限
顺时针定方位角与象限
顺时针定象限角与象限
在平面直角坐标系xOy中角α的顶点与原点重合始边与x轴的非负半轴重合终边经过点则cosα等于
在平面直角坐标系中设角α的顶点与原点重合始边与x轴的非负半轴重合终边与单位圆的交点的横坐标为则co
已知角θ的顶点在平面直角坐标系xOy原点O.始边为x轴正半轴终边在直线x﹣2y=0上则sin2θ=
﹣
﹣
6.00分在平面直角坐标系中角α的顶点与原点重合始边与x轴的非负半轴重合终边过点则tanα==．
已知角α的顶点与直角坐标系的原点重合始边与x轴的非负半轴重合终边经过点P﹣12则cos2α＝．
在平面直角坐标系xOy中角α与角β的始边为x轴正半轴顶点为坐标原点终边关于x轴对称已知sinα=则
﹣
±
±
5.00分在平面直角坐标系xOy中角θ的顶点在原点始边与x轴的非负半轴重合终边过点则=．
在平面直角坐标系xoy中圆C.的参数方程为t为参数.在极坐标系与平面直角坐标系xoy取相同的长度单位
在平面直角坐标系xoy中直线y=-x+3与x轴y轴分别教育A.B.在△AOB内部作正方形使正方形的四
下列说法错误的是
高斯平面直角坐标系的纵轴为X轴
高斯平面直角坐标系与数学中的笛卡尔坐标系不同
高斯平面直角坐标系中方位角起算是从X轴的北方向开始
高斯平面直角坐标系中逆时针划分为4个象限
以角θ的顶点为坐标原点始边为x轴的非负半轴建立平面直角坐标系xOy若角θ终边过点P1﹣2则sin2
平面直角坐标系中角α的顶点在原点始边与x轴非负半轴重合始边过点P﹣5﹣12则cosα=．
在平面直角坐标系xOy中若角α的始边为x轴的非负半轴其终边经过点P.24.1求tanα的值2求的值.
在直角坐标系xOy中若角α的始边为x轴的非负半轴终边为射线l.1求的值2若点P.Q.分别是角α始边终
在平面直角坐标系中角α的顶点在原点始边与x轴非负半轴重合角α的终边经过点则sinα＝tanα＝．
在平面直角坐标系xOy中抛物线C.的顶点在原点经过点A.22其焦点F.在x轴上.1求抛物线C.的标准
在空间直角坐标系中方程x-y=1的图形为
过原点的平面
与xoy面平行的平面
与xoz面平行的平面
与z轴平行的平面
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Giftsarefunbecausetheyareintendedtobeaphysicalexpressionofloveforone'ssignficantother.Howevertheactingofpreparingagiftcanbeannoyingparticularlyifyouarenotsurewhattochoose.YoucandoanythingfrombuyinghimorhersomethingorPanningoutaromantic浪漫的day. 1. Chooseasuitablegiftforyourlove. Romanticgiftsareasymbolicgestureofyourlovewhilepracticalgiftsaresomethingwithrealvalueanduse.2Thoughyoushouldn'theafraidtospendtheextramoneyonamemorablegiftit'smi-poitanttorememberthattherearemoreimportantthings.3Thegiftismeanttobeareflectionolthat.Insomecasesitcanfeelevenmorethoughtfulifyoumakesomethingyoursell. 4Althoughwrappingissometimesseenasanunnecessaryadd-onthetimeittakestounwrapthegiftmakesthegift-givingmoreenjoyableforbothyouandyourlove.Presentsarebestiftheotherpeopledoesn'tknowwhatitisyet.5Besidesaromanticletterorcardincludedinthegiftalsoaddstothepleasureofthegift'sreceiver.Moreimportantlywaitforaspecialmomenttogivethegift.Youcanpresentyourgiftatapointwherethetwoofyouarerelaxedandthingsarepleasant.Agift-givingshouldn'tberushedatall. A.Presentittoyourlove. B.Expressyourlovetohimorher. C.Theconnectionthetwoofyoushareispriceless. D.Choosingawonderfulgiftwillhelppromoteyourfriendship. E.There'sacertainpleasureinhavingsomethingkeptasuiprise. F.Yourchoicedependsontheoccasiontherelationshipandhisorhertastes. G.Whateveryoudecidetodomakesureyourgiftappealstohimorherspecially.
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．
OnThanksgivingdayMrs.Kleintoldherfirstgraderstodrawapictureofsomethingforwhichtheywerethankful.Shethoughtthatlivingina1neighborhoodmostofthesechildrenwoulddrawpicturesof2oroffullyladenThanksgivingtables.Thatwaswhattheybelievedwas3ofthem. WhattookMrs.Kleinby4wasDouglas'spicture.Douglaswassoaloneandlikelytobefound5inhershadowastheywentoutsideforplay.Douglas'sdrawingwassimplyan6obviouslybutwhose? Theclasswas7byhisimage.IthinkitmustbethehandofGodthat8usfoodsaidonestudent. A9saidanotherbecausetheygrowtheturkeys. Itlooksmorelikeapolicemanandthey10us. IthinksaidLaviniawhowasalwaysso11thatitissupposedtobeallthehandsthat12usbutDouglascouldonlydrawoneofthem. Mrs.Kleinhadalmost13Douglasinherpleasureatfindingtheclasssoactive.Whenshe14theothersatworkonanotherprojectshe15andaskedDouglaswhosehanditwas. Douglas16It'syoursteacher. ThenMrs.Klein17thatshehadtakenDouglasbythehandfromtimetotimeshe18didthatwiththechildren.Butitshouldhave19somuchtoDouglas! PerhapsshereflectedthiswasherThanksgivingandeverybody'sThanksgiving-notthematerialthings20tousbutthesmallwaysthatwegivesomethingtoothers. 1A.wealthy B.friendly C.poor D.crowded 2A.friends B.turkeys C.clothes D.flowers 3A.asked B.given C.informed D.expected 4A.surprise B.excitement C.accident D.relief 5A.left B.sad C.close D.shut 6A.hand B.image C.face D.finger 7A.amused B.puzzled C.shocked D.moved 8A.lends B.donates C.cooks D.brings 9A.servant B.mother C.waiter D.farmer 10A.guide B.teach C.protect D.arrest 11A.naughty B.serious C.curious D.stupid 12A.help B.love C.shelter D.lead 13A.praised B.kissed C.thanked D.forgotten 14A.had B.took C.changed D.stopped 15A.stoodup B.wentover C.turnedover D.lookedup 16A.lied B.burstin C.whispered D.criedout 17A.recognized B.wondered C.imagined D.recalled 18A.often B.never C.seldom D.sometimes 19A.remained B.meant C.cost D.came 20A.shown B.opened C.given D.said
Shakespeare'sGlobeExhibition&TourisauniqueinternationalresourcetoexploreShakespeare'swork.Openallyearrounditgivesyouanopportunitytolearnmoreaboutthemostfamousplaywright剧作家Shakespeareandhelpsyouseektofurthertheexperienceandinternationalunderstandingofhim. GroupVisitstotheExhibition&Tour •OpeningHours TheatreTours Monday-Sunday930a.m.-500p.m. Exhibition Monday-Sunday900a.m.-500p.m. Groupsof15peopleormorearerequiredtopre-booktheirvisitandeachgroupwillhaveitsownguideforfree.TomakeareservationpleasefillinaGroupRequestFormandreturnittousviaemail. •ExhibitionandTourPrices Adult£15.00 Senior60+£13.50 StudentwithvalidID£11.50 Child5-15£8.00 ComplimentaryEvery16thpersonfree •Gettinghere Shakespeare'sGlobe21NewGlobeWalkLondonSEl9DTUK Wehavecurrentlyimprovedsecuritywithallbagsbeingchecked.Pleasearriveingoodtimeanddonotbringanylargebagsandcheckthecalendarbeforeyourvisitorcall+4402079021500tofindoutaboutourlatestopeningtimes. Visitorsareadvisedtoarrivebypublictransportorbytaxi.ThereisacarparkonThamesExchangeonthenorthsideofSouthwarkBridgeopen24hourssevendaysaweek.CabsmaybefoundallyearroundonSouthwarkBridge.ItmayalsobepossibletopickoneupfromoutsidetheentrancehallonNewGlobeWalk. •Wheretoeat SwanatShakespeare'sGlobeservesmodernBritishseasonalfoodfordinnerafternoonteaordrinksinourbeautifulbarandrestaurantsetovertwofloorsavailableforpre-andpost-theatredining. SwanRestaurant Monday-Friday12noon-230p.m.&600p.m.-1030p.m. Saturday12noon-330p.m.&600p.m. Sunday12noon-900p.m. 1Whencanyoupayavisittotheexhibition? A.Fridayat200p.m. B.Mondayat800a.m. C.Saturdayat530p.m. D.Sundayat700p.m. 2Ifagroupof20childrenvisittheExhibition&Tourwhatisrequiredforthemtodo? A.Theyneedtohireaguidethemselves. B.Theymustbeaccompaniedbyanadult. C.Theyhavetopay£160forticketsintotal. D.Theyneedtoemailforareservationinadvance. 3Whichofthefollowingappliestovisitors? A.They'reabletogetataxinearSouthwarkBridge. B.TheycanparkonthesouthsideofSouthwarkBridge. C.Theyarerequiredtodeposittheirbagsbeforeentering. D.It'smoreconvenienttodrivetherethantakingpublictransport. 4WhatcanweknowaboutSwanRestaurant? A.AfternoonteaisnotservedonSunday. B.Itservestraditionalseasonalfoodfordinner. C.Itisclosedfrom3p.m.to5p.m.onworkdays. D.Itservesthreemealsdrinksandafternoontea.
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.
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Itisacommonthingtoforgettoreturnabooktothelibraryafteryou'veborrowedit.Maybeyou'llyou'llrealizeithasbeensome1monthsinceyouborroweditanddecidetoreturnit.2similarwhenRonWebsterborrowedabookfromthelibraryoftheUniversityOfLiverpoolhetooforgottoreturnit.Whenhewas30backin1953hewasworking3aresearchassistantintheuniversity.Itwasduringthistime4heloanedabooktitledStructureandFunctioninPrimitiveSociety.Shortlyafterheborrowedthisbookhe5calltoLondontocontinuehisresearch.JustasyoumighthaveexpectedRonWebstercompletelyforgotthewholething. Ronhada6successcareerandworkedforFordbeforeretiringandleadingarelaxedlife.Recentlywhenhetook7lookathiscollectionofbookshediscoveredtheoldbook.HecontactedUniversityofficialstoaskaboutthe8possibleofreturningthebook. UniversityLibrarianwas9amazetoseeRonarriveattheUniversityOfLiverpool10trytoreturnabookthatheborrowed61yearsago. JustincaseyouwerewonderingthetotalfinethatRonWebsterhadaccumulatedovertheyearsamountedto￡4510.
假如你是高三学生李华面对学习方面的挑战你们班很多同学感到压力很大.针对以上情况为了帮助大家摆脱烦恼英语课上老师让同学们先用英语进行讨论然后用英语写一篇发言稿. 发言要点如下1.你的看法; 2.你的建议; 3.你的倡议. 注意1.词数100左右发言稿的第一句已给出不记入总词汇; 2.可以适当增加细节以使行文连贯. Nowadayswestudentsfeelstressedfacingchallengesfromstudies.
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Andyrodeslowlyonhiswaytoschoolday-dreamingaboutthefishingtripthathisfatherhadpromisedhim.Hewassobusydreamingaboutallthefishhewouldcatchthathewasunawareofeverythingelsearoundhim. Herodealonguntilastrangesounddrewhimtothepresent.Hecametoastopandlookedcuriouslyuptotheheavens.Whathesawshockedandterrifiedhim.Ahugeswarmofbeesfilledtheskylikeablackcloudandthebuzzingmassseemedtobeheadingangrilytowardshim. WithnotimetowasteAndyspedoffintheoppositedirectionridingfuriously-butwithoutknowinghowtoescapetheswarm.Witharapidlybeatingheartandhislegspumpingfuriouslyhespeddowntheroughroad.Asthebeescamecloserhispanicincreased.Andyknewthathewassensitivetobeestings蜇.Thelaststinghadlandedhiminhospital-andthatwasonlyonebeesting!Hehadbeenforcedtostayinbedfortwowholedays.Suddenlyhisfather'swordscametohim.Whenyouareinatightsituationdon'tpanic.Useyourbrainandthinkyourwayoutofit. OnanearbyhillhecouldseesmokewavingslowlyskywardsfromthechimneyoftheNelsonfamilyhome.Beesdon'tlikesmokehethought.Theycouldn'tgetintothehouse.AndyracedtowardstheNelsonhousebutthebeesweregainingground.Andyknewhecouldnotreachthehouseintime.Heestimatedthatthebeeswouldcatchupwithhimsoon. SuddenlyoutofthecornerofhiseyeshespottedasmalldamusedbyMr.Nelsontoirrigatehisvegetablegarden.Offhisbikeandintothecoolwaterheliveddisappearingbelowthesurfaceandawayfromthesavageinsects.AfterholdinghisbreathforaslongashecouldAndycameupforairandnoticedthebeeshadgone.Dragginghimselfoutofthedamhestruggledupthehillyslopeandrangthedoorbell.Mrs.Nelsontookhiminsideandranghismother. You'llreallyneedthatfishingbreaktohelpyourecoverlaughedhismotherwithrelief.Thankgoodnessyoudidn'tpanic!ButAndydidnothearher.Hewasdreamingonceagainofthefishhewouldcatchtomorrow. 1WhydidAndyfailtonoticetheswarmofbeesearlier? A.Hewasridingtoschool. B.Hewaslisteningtoastrangesound. C.Hewasgoingfishingwithhisfather. D.Hewaslostinthethoughtofthefishingtrip. 2WhichofthefollowingisNOTmentionedabouttheswarmofbeesinthepassage? A.Theycrowdedlikeablackcloud. B.TheyshockedandterrifiedAndy. C.TheytriedtoattackAndyinamass. D.TheymadeAndystayinhospitalfortwodays. 3HowdidAndyavoidthebeesintheend? A.Herodeoffintheoppositedirection. B.HeaskedMr.Nelsonforhelp. C.Hehidhimselfunderthewater. D.HerushedintotheNelsonhouse. 4WhichofthefollowingcanbestdescribeAndy'sescapefromthebees? A.Nopainsnogains. B.Intimeofdangerone'smindworksfast. C.Oncebittentwiceshy. D.Wherethereisawillthereisaway.
SpringFestvalisthemostcelebratedfestivalinChina.Onthatdayandoverthefollowingtwoweelspeoplegreeteachother.Streetsandhouses1decoratebymanythingsofredcolor. SpringFestvalisatimeforexpressinggratefulness.GratefulnessisaChinesevirtue.Aregularactivityisofferingsacrificetotheheavenandtotheearthandtoancestors.Itismeant2showgratefulnesstotheoriginoflife. SpringFestvalisalsoasalute3anotherChinesevirtuediligence勤劳.WeChinespeoplebelivethatonlywith4weownhandscanwecreateahappyandbeautifullife.SomeactivitiesstagedduringSpringFestival5mostreflectdailyworkingscenessuchasharvestingandfishing. SpringFestivalalsocallsforShanng6valuelongkeptbyChinese.Astheoldsayinggoesgoodfortuneshouldbesharedandmisforturebefacedtogether.Insomeareaspeoplebringfoodstoapublicplaceandhavefuntogetherbyhavinggamesor7perform. AswarecelebratingSpringFestivalthefestivalisgettingmorepopularinthewest8traditionChineseactivitiessuchasthedragondanceandthePekingOperaareperformedasafixedprogram9adddiversitytolocalculture.Itindicatesthetrendsofmutual相互的learningandharmoniouscoexistence共存betweencivilizations10areexpectedtocontributetothebuildingofasharedfutureforhumankind.
Whenyou'redealingwithastressfulsituationorgoingthroughahardtimepeopleinyourlifecanhelpyou.Whensomeonewhocaresknowswhatyou'regoingthroughithelpsyoufeelunderstoodandnotsoalone.1Problemsseemsmallerwhenyoutalkaboutthemwiththerightperson.Youcandobetterandfindoutsolutionsmoreeasilywhenyoushareyourproblems. Therearelotsofdifferentwaystogetandgivehelp.2Othertimesyouneedadviceonthings.Helpcanbeveryeasylikeahomeworkproject.Oritcangoonforawhileliketeachingtobringupafailinggradeoradvisingtogetthroughadifficultpersonalsituation. It'slikelyyouremembertimessomeonehelpedyou.3Friendshelpedyougetthroughsadnessordealwithdisappointment.Teachersmighthaveguidedyouthroughthecollegeapplicationprocess大学申请.4Youmightgiveahandtoyourclassmatewhometdifficulty. Friendsparentsteachersandotheradultscanbegreatresourceswhenyouneedhelp.Therearealsotimeswhenyouneedtheextrahelpthataprofessionalcanprovidebest.Doctorscanofferspecializedhelpforahealthproblem.5 A.Havingarightpersonmeansalot. B.Parentstaughtyoutostopabadhabit. C.Difficultiesareeverywhereinyourlife. D.Youneedtolearntogivehelpintherightway. E.Sometimesyoujustwanttohearanencouragingword. F.Turntotheprofessionalpeopleforhelpwhenyouneed. G.Andyoucanalsoremembertimeswhenyouhelpedothers.
In2018towhichwe'vejustsaidgoodbyewe'veseenexcellentmoviessuchasBlackPantherCrazyRichAsiansandAStarIsBonIn2019therewillbereturnstoclassicmoviecharactersandstories.Herearemoviesnottomiss. Spider-Man-.FarH0-July5US TomHollandtheactorof2017'sSpider-ManHomecomingreturnstoplayPeterParkerahighschoolstudentwhogainssuperpowersafterbeingbettenbyaspider蜘蛛.WhenweseehimagainintheatersSpider-Manwillhaveanewred-and-blacksuit.ThemoviewilltakePeteronaglobaladventureoutsideoftheUS.AccordingtoMarvedStudiosPresidentKevinFeigeSpider-Manwilltryareturn.ohisnormalself;hewilltrytofindhisoldpowersonhisnewjourney. HobbsandShawJuly26US TomostpeopletheFastandFuriousseriesisallaboutcrazydriversracinginsportscarButinHobbsandShawhumorisaddedtotheaction-packedthrills.ThenewfilmwillhitUStheatersonJuly26.FamousEnglishactorJasonStathamwillstaralongsideDwayneJohnsonTheRockasDeckaidShawandLukeHobbsrespectivelyasintheirpreviousappearancesinFastandFurious8.Theactionandchemistryreallythrilltheiraudience.ButthenewactionscenesbetweenanMI6agentHobbsandthekillerShawwillhavetobegoodtobeattheirstand-offinthe2017movie. TheLionKingJuly19US Thisisabrand-newversionoftheclassicchildren'sfilm.Thestoryofwide-eyedyounglionSimbastillremainsinheartsofworldaudiencesevenafter25years.Inthisre-tellingSimhaagainbeginsthedifficultjourneytobecometheKingofthePrideLandsavaslAfricanprairie大草原.ThefavoritepartofthestoryformanyhasalwaysbeenthefriendshipbetweenSimbaTimonandPunibaa.ThelasttwosacrificealltheyhavetohelpSimbatobecometheking.Howwillthenewmoviere-imaginetheirfamousrelationship? 1Whichmoviewillprobablybemostpopularamongchildren? A.Spider-ManFarFromHome. B.HobbsandShaw. C.FastandFurious8. D.TheLionKing. 2Whatdothethreemovieshaveincommon? A.Theheroeshaveappearedinpreviousmovies. B.Theyhavethecomplexplotandhumorstyle. C.TheywillbeonintheatersinJulyworldwide. D.Famousactorsandactressesactinthemovies. 3What'sthewritingpurposeofthetext? A.Toaskformoviereviews. B.Tomakecommentsonthemovies. C.Toencouragereaderstowatchtlic D.Toinstructreaderstoknowstylesofmovie.
JohnGeorge60remembersthathelivedawonderfullifeintheDetroitneighborhoodwherehegrewup.Weknewallourneighbors.GeorgetoldDetroit'sMetroTimes.OnChristmasEvewe'dallgotomidnightMassandthere'dbe300peopleinourhouseatoneo'clocktoaboutfiveinthemorning.Thefolkswerejustreallygoodhandworkingpeople. Bythe'80sHowever.theoldneighborhoodchanged.Dueinparttoeconomicdownturnsanddrugabusewell-kepthomeshadbeenabandonedandkindlyneighborshadfledtothesuburbs郊区.ButnotCeorgeLivinginanycityit'slikebeinginarelationshiphetoldReader'sDigest.Somedaysarebetterthanodiers.ButitwasmyHome.AndwhenIsawitbecomingworseIhadtwochoicesIcouldleaveorIcouldstayandfight.Ichosethelatter. Whentheabandonedhomebehindhisturnedintoaworn-outplacethefatheroftwograbbedsomeboardsandnailsandbeganboardingupthehouse.Aftertwoneighborsstoppedtoaskwhathewasdoingtheydecidedtohelpwithgreatresults. That'showitallgotstarted.Inthe30yearssincethatfirsthomerescueanarmyofapproximately182000volunteersalongwithprivatedonorshashelpedGeorgepulldownaround300abandonedhomesmainlyindiepoorerNorthwestareaofDelruit.They'vealsosecured400-somehomesbyboardingthemup.They'vepaintedandrepairednearly900homesandbuiltover100fromscatch.AccordingtoForbesmorethan1000Detroitershavebeenhousedasaresultoftheirwork. Andthere'sHalloween.InDetroitOctober30wasknownasDevil'sNightaperiodwhenallhellbreaklooseintheformofcrimeandvandalism破坏公物.InresponseGeorgecreatedacitizens'patrol巡逻thatwouldtaketothestreetskeepinganeyeonillegalbehavior.HenameditAngels'NightWhatbeganwith12neighborsonpatrolin1990hasgrowntomorethan60000citywide. George'sinspiredideashavenotgoneunnoticedbythecityheloves.Othersarebuyingintoit.There'satrendofyoungerhomeownerscomingin. 1WhatwasGeorge'shomecityDetroitlikebeforethe'80s? A.Neighborswereniceandgotalongverywell. B.Peopleinthesuburbsledawonderfullife. C.Economydeclinedbecauseofdrugabuse. D.Manyhomeswereabandonedandpeoplelied. 2WhatdidGeorgedecidctodoafterhisneighborhoodchanged? A.Movotothesuburbs. B.Meavehishomelown. C.Joinhisneighborstohelp. D.Stayandfighttosavehiscity. 3WhathappEnodasareultofGeorgeandothervolunlcere'hardwork? A.MorepeoplemovedintoDetroit. B.AlmostallDetroiterswerehoused. C.Over100homeswerenewlybuilt. D.Therewasnoillegalbehavioranymore. 4Whatdoesthestorymainlyintendtotollus? A.Greatmindsthinkalike. B.Twoheadsarebetterthanone. C.Afriendinneedisafriendindeed. D.Littlepeoplecanmakeabigdifference.
NatalieTraylingisafamousstreetartistinMelbourne.Atfirstthosewhohappenedtopassbyherandsparesomechangedidn'tevenrealizewhatamusicalgeniuswasplaying.TheemotionaltunewasnotonlymasterfullyplayedbutalsocomposedbyNatalieherselfwhenshewasonly14.Graduallyaslongassheappearspeoplewillstopabsorbedinhermusic.Hermusicmakesyouthinkaboutcalmnessthegoodthingsinlifeandnevergivingup. Butwhatpeopledonotknowisthatbehindthebeautifulmusicoftheoldwomanitisfullofbitterness.Attheageof12shewonamusicscholarshipatSantaMariaCollege.At15sheknockedbackascholarshiptotheRoyalAcademyofMusicinLondonbecauseherparentscouldn'tpaynon-tuitioncosts.WhensheleftschoolshetaughtpianoatSantaMaria.LatershemetherhusbandDenis.Theyhadfourchildrenbutthetwoofthemdied.In1984Denisaskedforadivorce.Natalie'ssonNathanwasgivenmedicationfordepression.NatalielivedeitheroutdoorsinRoyalParkorinboardinghousesfornineyears.Inlate2003Nataliecollapsedwithanaemia贫血andwashospitalizedforsixmonths. ForhalfacenturyNataliehasbeenteasedbyfate.Butevensoshenevergaveupherloveformusic.WhenaskedwhythemusicwassoimportanttohershesaidMusiciseverything.Idofeelpartofit.Thewholeworldismusic. WhenNataliewentontheInternetshebecameasignofMelbourne.Peopleareimpressedbyherpersistenceindreamsandtheoptimismoflife.Nowsheisnolongerwanderingaround.ShecanplaythepianoatanytimebutaslongastheweatherisgoodshewillwalktothestreetsofMelbourneandplayatouchingmelodyfortherushofthecity. 1WhyisNatalie'smusicsotouchingtothepassers-by? A.Itisfullofbitterness. B.Shecomposeditherself. C.It'sareflectionofherownlife. D.Itremindsofthebeautyoflife. 2WhichofthefollowingcanreplacetheunderlinedwordknockedbackinParagraph2? A.gaveup B.obtained C.accepted D.wasawarded 3WhatdoesmusicmeantoNatalie? A.It'shertalent. B.It'sthesourceofhermisfortune. C.Itispartofherlife. D.It'sawaytoearnaliving. 4Whatdoestheauthortrytotellus? A.Natalieisamusicalgenius. B.Lifeisnoteasyforeveryone. C.Nevergiveuphalfway. D.Nataliehasastrongandbraveheart.
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
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限一词 2.只允许修改10处多者从第11处起不计分. WehadanEnglishstory-tellingcompetitiondaybeforeyesterday.ItisrequiredthatalltheentriesbeoriginalandinterestingandbepresentinginEnglishwithinfiveminutes.Allmyclassmatestookanactivelypartintheactivity.TwoforeignEnglishteacherswereinvitedtoactlikejudges.IntheendLiPinghadgotthefirstplace.Alltheparticipantssaidtheactivitybenefitedusalotinmanyways.NotonlydiditimprovedtheirspokenEnglishanditalsobroughtthemmuchfun.Weallhopethatsuchkindsofactivitycanbeheldagain.
假设你是李华.你的英国朋友Emily来信说她非常喜欢中国的民族舞并打算最近来中国学习民族舞想请你帮她推荐一位舞蹈老师.请你根据以下要点给她写一封信推荐一位老师. 要点 1.介绍你所推荐的老师 2.推荐该老师的原因 3.祝愿她拜师成功. 注意 1.词数100左右 2.可以适当增加细节以使行文连贯. DearEmily Yours LiHua
Itisnotassimpleasopeningthedoorandhittingthetrackinwinter.Thereareafewthingsyoucandotoensureyouaregettingthemostoutofyourrunandimporantlynotdoingmoreharmthangood. Warmupcooldown 1Yourmusclesneedsometimetowarmupwhenit'scoldsotakeiteasywhenyousetoffanddoafewstretches伸展onceyou'refinished. Drinkwater Youmightnotfeelhotbutthat'sbecausesweatevaporates蒸发morequicklyintothechillydryair.Sobesuretodrinkwaterbeforeduringandaftercold-weatherworkouts.2Abeltbottleconvenientlyattachestoyourwaistsoyoudon'thavetocarryitandcanhaveadrinkwheneveryoufeellikeit. 3Runningincottonisabadidea.Wearthinbreathablelayersofsynthetic合成的clothingthathelpprotectyoufromthewindandsnowbutstillletoutheatandmoisture水分.Thirtypercentofyourbodyheatescapesthroughyourhandsandfortypercentthroughyourhead.Wearahatorbeanie无边小便帽andglovessoyourcirculatorysystemcandistributewarmbloodtotherestofyourbody.4 Runintothewind 5ObviouslyitwillbeaneasierpassagehomewithsomeextrahelpfromMotherNature.Butmoreimportantlyyouwon'thavethewindinyourfaceforthesecondhalfofyourrunwhenyouaremorelikelytobesweatingandcatchachill. A.Dressright. B.Keepwarm. C.Don'tgotoofasttoosoon. D.Startandfinishinthesameway. E.Don'twaittodrinkwateruntilyoufeelthirsty. F.Headoutintothewindandcomehomewithitatyourback. G.Onreallycolddayswearamaskorscarfoveryourmouthtoprotectyourface.
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
将函数fx＝sin2x的图象向右平移个单位长度得到gx图象则函数的解析式是
RedisaparticularlypopularcolorinChina.Apairofredshoes-1theyareforsportsdancesorjustfashion-isamust-haveforeveryChinesewoman'sshoecollection.FormostChinesebridesredshoesshouldalsobeworn2theirbigday. Aswomen'sfeet3connectwithfemaleattractionredshoesoftenemphasizethisaspect4conveyaspecialbeauty.InsomeclassicChinesenovelsthereare5describeofcharmingwomeninredsilkshoes. Ifyouwearadarkdressincold6seasonapairofredshoescanraiseyourensemble整套服装toa7highlevel.Theycanalsogowithdifferentlevelsofredcolor8givetheweareralivelyandjoyfullook. 9sureredwillalwaysbeabelovedcolorfordesignersandredshoeshavealsobecomeachoiceformanysupermodels.Ifyouarealsoafanofthis10energycolorconsiderwearingapairofredshoesforeveryChineseLunarNewYear!
Whenwereadapoem.weoftenimaginewhatthepoets1thinkwhentheywroteorwhattheyweredoingatthetime.Thesethoughtsletusconnectwiththewordsbetterasifwe'dcreatedthepoem2we.Willapoemstillmeanasmuchifacomputewritesit? By3useagorithms算法computerscannowcreateallkindsoftextincludingresearchpapersbooksnewsstoriesandevenpoems.Computer-generatedpoemsmightbecorrectinbothgrammarandstyle4somesaytheystilllack5createandtruemeaning. AustralianresearcherOscarSchwartzcreatedawebsite6callbotornot.Onhissiteyoucanreadpoemsandguesswhetherthey7writebyahumanoracomputer.SchwartzrecentlygaveaspeechatTedXSydneyin8hestatedthatsomeofthewebsite'spoemswereableto9foolish65percentofhumanreaders. Hesaidthatonhiswebsitehehopedpeoplewouldquestionthedifferencebetweenhumansand machines一andbeabletoidentifywhatitis10makesushuman.
Theyear2019willmarkthe100thanniversaryofthedeadliestinfluenzaoutbreakinhistory.Itisestimatedthattheinfluenzapandemic瘟疫of1918killedmorethan50millionpeoplearoundtheworld.Otherestimatesgomuchhigher.Becauseofalackofmedicalrecord-keepingwemayneverknowtheexactnumber. Theinfluenzawasafastkiller.Somevictimsdiedwithinhoursoftheirfirstsymptoms.Othersdiedafterafewdays.theirlungsfilledwithliquidandtheychokedtodeath.The1918flupandemicwasalsodifferentfromotheroutbreaks.Itstruckmanyyounghealthypeople.Virusesusuallyaffectsickoroldpeople. Althoughmodernmedicineeffectivelycontrolsmanydiseasesinfluenzaremainsdifficulttoprotectagainst.TheWorldHealthOrganizationestimatesthateveryyearinfluenzakills250000to500000peoplearoundtheworld.Eachyearmedicalscientistsdevelopfluvaccines疫苗whichofferimmunity免疫fromsomeinfluenzaviruses.Buttheycanonlyguesswhichformoftheviruswillspread. Healthofficialsremainconcernedaboutanotherflupandemic.Newformsofthefluvirusappearregularly.OneexamplewastheswinefluorH1N1outbreakin2009.AnthonyFauciDirectoroftheNationalInstituteofInfectiousDiseasesintheUnitedStatessaysthatviruscausedatruepandemic. Tostopthenextpandemicscientistsarenowresearchinghowtocreateauniversalinfluenzavaccine.InOctober2019VanderbiltUniversityMedicalCenterintheU.S.announcedtheUniversalInfluenzaVaccineInitiative.Theuniversitysaidresearchersareleadinganinternationalefforttodevelopauniversalinfluenzavaccinethatwillprotecteveryoneagainstallformsofthefluanywhereintheworld.Theuniversityaddedthatresearcherswillbegintestsinearly2019.theHumanVaccinesProjectapublic-privatepartnershipisfundingtheproject.Howeveruntilauniversalinfluenzavaccineisavailabletoday'sseasonalfluvaccineremainsimportant. 1Whatdoweknowabouttheinfluenzain1918? A.ItsweptacrossthewholeEurope. B.Noonesurvivedthefirstfewdays. C.Itkilledthelargestnumberofpeople. D.Itstruckonlyyoungandhealthypeople. 2Whyisinfluenzadifficulttoprotectagainst? A.Itspreadstoorapidly. B.Itisquiteeasytocatch. C.Novaccineisavailable. D.It'shardtojudgetheformofvirus. 3WhatdoestheauthorwanttotellbymentioningH1N1in2009? A.Newformsoffluviruskeepsappearing. B.Itwasthemostseriousinrecentyears. C.Itwascausedbythesamefluvirusof1918. D.TheH1N1viruswasdeadlyaswell. 4Whatcanwelearnabouttheuniversalinfluenzavaccine? A.Thedevelopmentisquitecostly. B.Itwillbeusedallovertheworld. C.Itcanprotectagainstallformsofflu. D.Itwillsooncomeintousein2019.
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
Twodeerjumpedoutinfrontof16-year-oldAmandaFloyd'scar.Shesteppedonthebrakestoppingthecarjustintime.Butlatershestartedtexting.Distracted分心的Amandaturnedleftandrightthencrashedintoanothercar.Luckilyshewasn'tinarealcar-shewasinadrivingsimulator模拟器atRooseveltHighSchoolOhioUS.IneverreallyrealizedthatcarsmakeaturnthatmuchAmandaaJuniorsaid.Sheaddedthatshewouldn'ttextwhiledrivinganymore. TheOhioDepartmentofTransportationODOTandStateHighwayPatrolbroughtthesimulatortotheschool.Theysaidtheywantedtohelpstudentslearnaboutthedangerofdrivingwhiledrunkwhiletextingorwhiletalkingonthephone. AccordingtotheNationalHighwayTrafficSafetyAdministrationdistracteddrivingclaimed3450livesin2016alone.Expertsbelievetheactualfigureisprobablyhigher. Thesimulatorisbasicallyacomputerprogram.Likemanycomputergamesitwasahitwiththestudents.Theylinedupandcrowdedaroundtowatcheachothertaketurns.Thesimulatorhasasteeringwheel方向盘brakeandgaspedal油门踏板.Itismadeupofthreelargecomputerscreensonatable. Studentschooseadistractionsuchasdrivingwhiledrunkortexting.Theyalwayscrashofcourse.Thentheyarepulledoverbythepolicetobetaughtthebadresultsoftheirdrivinghowmuchdamagethey'vecausedwhattheirfineisifanyonediedintheaccidentandifthey'regoingtogotoprison. ItteacheshowtodrivewithoutbeingontheroadsaidShanteThompson16.Shehadjustcrashedintoadeer. ODOTspokesmanJustinChesnicsaidhundredsofkidshavegonebehindthewheelsofar.Hesaidevenmorehavebenefitedfromwatchingtheirclassmates. Drivingissuchamajorresponsibilitysotakeitseriouslyhesaid.Putawayyourcellphone.Alotoftheaccidentsouttherearebecauseofdistracteddriving.Itcannotonlychangeyourlifebutitcanchangesomeoneelse'slifeforever.Theresultsareserious. 1WhatdoestheauthorintendtodoinParagraphOne? A.Introducethetopicofthetext. B.Illustratetheauthor'spointofview. C.Providesomeadviceforthereaders. D.Offersomebackgroundinformation. 2WhyisthedrivingsimulatorprojectintroducedtoRooseveltHighSchool? A.Itteststhestudents'abilitytostayfocused. B.Itgetsstudentstohavefunbetweenclasses. C.Itteachesstudentshowtodealwithtrafficaccidents. D.Itmakesstudentsawareofthedangersofdistracteddriving. 3Whatcanweknowaboutthedrivingsimulator? A.Itisconnectedtothelocalpolicestation. B.Itisarealcarbuthaslargecomputerscreens. C.Itattractsthestudents'interestasacomputerprogram. D.Itbenefitsthestudentswhouseitmorethanthosewhoonlywatch. 4Whatisthebesttitleofthepassage? A.TrafficrulesinOhioUS B.Dangerofdistracteddriving C.Simulateddrivingforstudents D.Advantagesofcomputergames
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.
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