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如图，在平面直角坐标系中，已知⊙A经过点E、B、O．C且点O为坐标原点，点C在y轴上，点E在x轴上，A（﹣3，2），则cos∠OBC的值为（ ）
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在平面直角坐标系中已知角α的终边经过点P.3﹣2则tanα的值为.
在平面直角坐标系中已知A.00B.30点C.在y轴上且△ABC的面积是6.求点C.的坐标.
如图将正方形OEFG放在平面直角坐标系中O是坐标原点点E的坐标为23则点F的坐标为_________
有下列叙述①在空间直角坐标系中在x轴上的点的坐标一定可记为0bc②在空间直角坐标系中在y轴上的点的坐
在平面直角坐标系中O为坐标原点点A-aaa＞0点B-a-4a+3C为该直角坐标系内的一点连结ABO
在直角坐标系中已知点O.坐标00A.点在x轴上且OA=5则A.点坐标为_________.
如图6419在平面直角坐标系xOy中点A.B.的坐标分别为302－3△AB′O.′是△ABO关于
如图在平面直角坐标系xOy中△AOB三个顶点的坐标分别为O.00A.﹣23B.﹣42将△AOB绕点O
如图平面直角坐标系xOy中点A.B.的坐标分别为302-3则△AB'O'是△ABO关于点A.的位似图
如图在平面直角坐标系xOy中△AOB三个顶点的坐标分别为O00A13B22将△AOB绕点O.逆时针旋
点P.在平面直角坐标系中第一象限内且又是半径为1的⊙O.上的点已知∠POx=α则点P.关于y轴对称的
(sinα，cosα)
(cosα，sinα)
(－sinα，cosα)
(－cosα，sinα)
如图在平面直角坐标系xOy中已知点A.34将OA绕坐标原点O.逆时针旋转90°至OA′则点A.′的坐
如图在平面直角坐标系xOy中已知点A.34将OA绕坐标原点O.逆时针旋转90°至OA′则点A.′的坐
如图在平面直角坐标系xOy中已知点A.34将OA绕坐标原点O.逆时针旋转90°至OA′则点A.′的坐
如图在平面直角坐标系xOy中△AOB三个顶点的坐标分别为O.00A.-23B.-42将△AOB绕点O
下列说法中正确的是
平面直角坐标系是由两条互相垂直的直线组成的
平面直角坐标系是由两条相交的数轴组成的
平面直角坐标系中的点的坐标是唯一确定的
在平面上的一点的坐标在不同的直角坐标系中的坐标相同
如图所示在平面直角坐标系中已知A.01B.20C.43.1在平面直角坐标系中画出△ABC并求△ABC
如图平面直角坐标系中⊙P.经过平面直角坐标系的原点O.且分别交x轴y轴于
B.两点。C.为弧ACB的中点，A.（6，0）、AC=5
，则点
的坐标是（ ） A.（0，7） B.（0，6
）
（0，8）
（0，6）
如图平面直角坐标系xOy中点A.B的坐标分别为302﹣3△AB′O′是△ABO关于的A的位似图形且O
在平面直角坐标系中点O是坐标原点过点A12的直线y=kx+b与x轴交于点B且S△AOB=4则k的值是
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MyclosechildhoodfriendHowardAllenbroughtusgoodnews.Hespentthelasteightyears1nightschooltogethisbachelor'sdegreewhileworkingafull﹣timejob.Afteryearsoflate2andweekendsofdoingcourseworkandstudying3hegraduatedlastmonth. Heremainedinourhometownafterhighschoolbutmostofhis4myselfincludedleftour5tootherstatesforuniversityandemployment.Overtimenewfoundresponsibilitiesfamiliesandotherthingshavemadeit6thatwe'rebackinourhometownatthesametime. Oneofourmutual共同的friends7awonderfulidea.Wemadeaweekendplanthat8we'dallflybacktoourhometownto9himandcelebratehisaccomplishment. Wecontacted联系Allen'smomand10howtohaveAllencometothesurprise11party.Wedecidedthathismomtoldhimthathewasgoingtohavedinnerwithjusthis12tocelebrate.Littledidheknowthatthedinnerwould13a20﹣personaffairwithhisoldfriendspresentfromalloverthecountry!MeanwhileAllenlikescakesverymuchandI14abigonewhoseflavorwashis15whichIknewfrommychildhood. WhenAllen16tohavedinnerwithhisgrandparentshewas17surprisedandmoved.Hetoldushowmuchit18tohimthatweallflewintomakehimfeel19.Itwasobviousthatthepartywasagreat20butthatwaswhatweshoulddo.Asisoftensaidwhateverisworthdoingatallisworthdoingwell. 1A.building B.attending C.repairing D.cleaning 2A.days B.mornings C.afternoons D.nights 3A.finally B.quickly C.strangely D.naturally 4A.sisters B.brothers C.friends D.teachers 5A.office B.hometown C.company D.job 6A.famous B.rare C.familiar D.fun 7A.liked B.remembered C.hatched D.knew 8A.insecret B.byluck C.inreturn D.bychance 9A.invite B.find C.surprise D.face 10A.showed B.answered C.watched D.discussed 11A.Christmas B.birthday C.graduation D.business 12A.relatives B.grandparents C.colleagues D.classmates 13A.turninto B.gothrough C.dealwith D.careabout 14A.discovered B.received C.drew D.ordered 15A.favorite B.plan C.dream D.design 16A.stopped B.arrived C.waited D.expected 17A.totally B.frankly C.suddenly D.normally 18A.described B.explained C.suggested D.meant 19A.calm B.confident C.brave D.special 20A.invention B.devotion C.success D.medal
TheChinesePeople'sLiberationArmyNavyturned70onApril232019.Itisatimeforreflectingonitsbeginningandhowoverthepastsevendecadesithasovercomesomanydifficultiestogrow1amodemnavalforce. AsamajorPacificcountry2hasmorethan18000kilometersofcoastlineChinaneedsapowerfulnavalforcethatcantimelyrespondtochallengesandrisks.ThePLANavyisincreasinglybeinglookeduponasanessentialforce3defendthecountry'sinterestsandprotectitsnationals'personalsafetyand4possessionoverseas. ThusthecallsforChinatobuildablue﹣seanavyhavebecomestronger5thePLANavyhasapparentlyaccelerateditsmodernizationstepstryingtoincreaseitsbattleabilitiesandreadiness.Nottomentionthatthenavyalsohasthedutytomore6effectiverespondtochallengestothecountry'smaritime海上的interestsandterritorialintegrity领土完整. HoweveraspartofChina'sdefenseforcesthePLANavyisaforcefor7peacepurposesThePLANavyhasalsoactivelyparticipatedininternationalhumanitarianmissions使命and8conductvariousexchangeswithnavalforcesfromothercountriestobuildunderstandingand9strengthtrust. SowehavereasontobelievethatthePLANavy10contributebettertoworldpeaceanddevelopment.
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Ihavebeenluckyenoughtoberightnexttodolphinsplayinginperfectsurfusingthepowerofthewavestotravelevenfasterthantheynormallyswim.ThereisnodoubtthattheyareenjoyingthemselvesandthoughIcan'tswimlikeadolphin1. Bodysurfinginvolvesridingonawavewithnohelpfromanydevice装置suchasasurfboardwhichmakesitthepurestformofsurfing.Infactitisoneofveryfewextremesports﹣freeclimbingandcliffdivingareothers2. Howeveritismoreenjoyableandsaferifyouuseflippers脚蹼.Thisisbecausetheyenableyoutoswimfasterandsocatchwavesandsurfalongthemmoreeasily.3Anotheraidisahandboardamini﹣surfboardaboutthesizeofanironheldinonehandtogeneratemorespeedalongthewave. Tocatchawaveswimtowherethewavesbreakandasoneapproachesstartswimmingtowardsthebeach.Youmusttrytotravelatthesamespeedasthewaveandifyoudoitcorrectlyyouwillfeelthewaveliftingyouandpushingyouforwards.4 Bodysurfingisnotaprofessionalsport5thePipelineBodysurfingClassic﹣﹣heldeachyearatthelegendaryBanzaiPipelineinHawaii.LocalbodysurferscompeteagainstathletesfromplacessuchasAustraliaBrazilJapanorFranceinterrifyingwallsofwaterabovethesharpcoralreef. Formenoothersportisasmuchfunasbodysurfing.There'sagoodreasonwhydolphinschoosenottousesurfboards! A.Thentryandsurfalongthesurfaceofthewave B.Icanexperiencethissamefunwhenbodysurfing C.butitdoeshaveitsownunofficialworldchampionship D.thatcanbepractisedbyusingnothingbutthehumanbody E.whichislookeddownonbyprofessionalathleteshowever F.Famousbodyboardersinthegreatsurfinghistoryhavealsocompeted G.Awetsuitisalsoadvisabletouseunlessyouarebodysurfingintropical热带的seas
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KindleE﹣reader8thgeneration FreeTouchscreenDisplay Price:﹩79.99 ●Thinandlightforone﹣handedreading NewKindleis11%thinnerand16%lighterthanthepreviousgenerationKindlemakingiteasyandcomfortabletoholdinonehand. ●ReadlikerealPaper Kindlecreatestextsimilartowhatyouseeinaphysicalbook.Theblacksandwhitesonthescreenareuniformimprovingtextandimagequality. ●Long﹣lifebattery Kindledoesn'tneedpowertoshowapageoftextallowingyoutoreadforweeksonasinglecharge. ●Thousandsofbooksnodistraction分心 Kindleisdesignedtobeane﹣reader.Itsatisfiesyourloveofreadingwithoutinterruptionslikee﹣mailsandphonecalls. ●Lookitupwithoutleavingyourpage SmartLookupcombinesentriesfromTheNewOxfordAmericanDictionarywithinformationfromWikipediasoyoucanknowmeaningscharactersandmorewithoutlosingyourplace. ●Adjustyourtextsize Choosefromeighttextsizestopreventtiredeyessoyoucankeepreadinglonger. Customerreviews: ※DamonMay212019 Thepriceisgreatwithanextra﹩20offandthisnewKindleissmallerinmyhandsthanmyoldone.IwassadtolosemyoldKindlebutthisoneisterrific. ※JasonJanuary262019 ImisstheoriginalKindlerssize﹣thisoneistoosmall.Alsothescreenisoverlysensitiveandthingspopup弹出andthebatterydoesn'tlastaslongastheoriginalKindle.ButmybiggestdisappointmentisthatthisKindledoesn'tallowyoutotransfereverythingfromtheoriginalKindlesoIlostalloftheinformationfrommyoldone.Overalldisappointing. ※SusanNovember172018 IhadtheoriginalKindleandthebatterylastedforweeks.Thisbatteryonlyseemstolastafewdayshowever.TheotherproblemIhavewiththisversionoftheKindleisthetouchscreen.Itisannoyingwhenyouarereadingandstartturningthewrongway.Sometimesit'shardtogetthepagetoturnthewayyou'dlikeitto. 1Whichisafeatureofthe8th﹣generationKindle? A.Itis16%thinnerthanthepreviousone. B.Itisuser﹣friendlywithabuilt﹣indictionary. C.Itcanrunforseveralmonthsonasinglecharge. D.Itisdesignedtoreceivee﹣mailsandmakecalls. 2InwhichwaydoesJason'snewKindlebotherhimmost? A.Itsscreenismuchtoosensitive. B.Itisnotaslargeasheexpected. C.Itsbatterylifeisn'taslongashisoriginalone. D.Documentscan'tbetransferredbetweendifferentKindles. 3WhatproblemdoJasonandSusanhavewiththeirnewKindle? A.Therearealwaysmessagespoppingup. B.Ifsdifficulttoturnonthetouchscreen. C.Pageturningdoesn'tworkwellsometimes. D.Thebatterylastsshorterthantheoriginalone.
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假定你是李华你校将举办诵经典;学汉语ReadClassicsandLearnChinese活动你的英国朋友John对此很感兴趣发邮件向你询问有关情况请根据以下要点用英语给他回复. 1.活动时间及地点;2.诵读内容及形式;3.邀请他参加. 注意: 1.词数100左右;2.可以适当增加细节以使行文连贯; 3.开头和结尾已为你写好不计入总词数. HiJohn Yours LiHua
Canyouimaginedigginginyouryardonedayandfindingalife﹣sizedsoldiermadecompletelyofclay?That'swhathappenedseveraldecadesagowhenfarmersinXi'anChinawerediggingwells. Archaeologists考古学家havesincefoundabout6000moreofthesesoldiersalongwithhorsesweaponstoolsandotherartifacts.ThehugearmywasmeanttoprotectthetombofthefirstrulerofChina.ThefirstemperorofChinaQinShihuangaccomplishedahugeamountduringhisrule.Between221and210B.C.hestartedtheconstructionoftheGreatWall.Hebuiltalargenetworkofroads.Heintroducedanewwritingsystemcurrency货币andasetofmeasurements.Theemperoralsoorderedtheconstructionofahugearmyoflife﹣sizedterracottasoldiers.Thesehehopedwouldprotecthistombafterhisdeath. ThesoldiersinXi'an'sterracottamuseumaretodaylightbrownbuttheyweren'talways.Theybeganasanarmyofredblueyellowgreenwhiteandpurple.Sadlymostofthecolorsdidnotlasttothepresentday.Afterbeingexposedtoairduringexcavation挖掘thecoatingunderthepaintbegantofalloff.Thepaintdisappearedinlesstimethanittakestoboilaneggtakingwithitimportantpiecesofhistory. Nownewtechniquesarestartingtorevealthearmy'struecolors.Archaeologistshaverecentlydiscoveredanareawithmorethanahundredsoldiers.Manyofthesestillhavetheirpaintedfeaturesincludingblackhairpinkfacesandblackorbrowneyes.ChineseandGermanresearchershavedevelopedaspecialliquidtohelppreservethesoldiers'colors.Aftertheyfindasoldierorotherartifacts手工艺品archaeologistssprayitwiththeliquid.Theythencoveritinplastic.Archaeologistsarealsofindingcolorsinthedirtaroundthesoldiers.It'simportantnottodisturbthedirtsothecolorswon'tbelost.WearetreatingtheearthasanartifactsaysarcheologistRongBothemuseum'sleadingchemist.ThenextchallengesaysRongistofindawaytoapplythecolorstothearmyagain.OncethathappensartistscanbringEmperorQin'sarmybacktolifeinfullvividcolor. 1Theterracottasoldierswereconstructedto. A.showtheoutsideworldaboutChina'sgreatness B.beenjoyedbyeverydaypeople C.frightenChina'senemies D.protectEmperorQin'stomb 2Whatisthemainideaofthethirdparagraph? A.Thesoldierslosttheircolorsveryquickly. B.Thesoldiers'paintfelloffbecauseofthehightemperature. C.Visitorstothemuseumarenotactuallyseeingtherealsoldiers. D.Beingexposedtowaterisbadforthesoldiers. 3Whathavearchaeologistsrecentlydiscovered? A.Aplacewithoverahundredsoldiers. B.Awrittendescriptionofthesoldiers'truecolors. C.Aspecialliquidinthetombtopreservethesoldiers'colors. D.AnewtombforEmperorQin. 4WhichstatementwouldRongBoprobablyagreewith? A.Thesoldiersshouldstayintheircurrentbrowncolor. B.Artistsshouldbeabletopaintthesoldiersinanycolortheywant. C.Archaeologistscanonlyguessatthesoldiers'originalcolors. D.Weshouldtrytorestorethearmy'svividcolors.
OnthemorningofJuly141960JaneGoodallarrivedontheeastshoreofLakeTanganyikaandtheGombeNationalPark.Thenaround5pmsomebodyreportedthattheyhadseenachimpanzee黑猩猩.StraightawayJanesetoffintotheforesttofindherchimpanzees. AsayoungwomanJaneGoodallhadnoscientificknowledgebutthisdidn'tstopherfromfollowingherchildhooddreamofstudyingchimpanzeesinAfrica.Aftermanymonthsofdifficultworkshefound:chimpanzeeseatmeattheyusetoolstogetfoodandtheyalsomaketools.EveryeveningJanewroteherfindingsinadiaryandshebegantopublisharticlesinjournals.AfterawhilescientistsstartedreadingherstudiesandJanewasofferedaplaceatauniversity.AftermoreyearsofresearchshebecameDoctorJaneGoodallin1966.TherewasafilmMissGoodallandtheWildChimpanzees1963andthenthefirstofmanybookscalledMyFriendstheWildChimpanzees1969. Duringthe1970sGombebecameadangerousplacetoworkwhereoftentherewasfightingbetweensoldiers.ManyforeignersfledtheregionbutJanestayed.AdifferentproblemdevelopedinGombeinthe1980s.Thehumanpopulationintheregionwasincreasing.AsaresultofthistherewereonlyaboutahundredchimpanzeeslivinginGombe.Janerealisedthatsomethinghadtobedonesoshesetabouthelpingthelocalcommunitytogrowmoretreesforthemintheregion. After1989Janestartedgivinglecturesfightingagainstthecrueltytochimpanzeesusedinmedicalresearchlaboratories.Shewasalsobusysettingupsanctuariesforchimpswhichhadbeencaughtorwereorphans孤儿becauseofthetradeinchimpanzeemeat.NowadaysshehasverylittlesparetimeleftbutshestillspendspartofeveryyearintheforestinGombewatchingherchimpanzees. 1InwhichorderdidJanedothefollowingthings? a.receivedherdoctor'sdegree b.madediscoveriesaboutchimpanzees c.wroteherfirstbookaboutchimpanzees d.gavelecturesaboutchimpanzeeprotection A.bacd. B.adbc. C.acdb. D.abdc. 2WhatwastheproblemthathappenedtochimpanzeesinGombeinthe1980s? A.Diseasesmadetheirpopulationdropsharply. B.ManyforeignerstookthemawayfromGombe. C.Theirhomeswerealmostdestroyedbyhumans. D.Fightingamongsoldiersbrokeoutintheirhomes. 3Whichofthefollowingbestexplainssanctuariesunderlinedinthelastparagraph? A.Modernhospitals. B.Safehouses. C.Wildlifemarkets. D.Researchlabs. 4WhydoestheauthoruseherchimpanzeesinParagraph1and4? A.TotellusJaneistheirprotectionhero. B.ToproveJane'sresearchneedsthem. C.ToexplainJanehasraisedthem. D.ToshowJanelovesthemdeeply.
ThestudyonfacialrecognitiontechnologyFRTbeganinthelate1960s.Inthelate1990sFRTbegantoenterthemarketgraduallybutitsaccuracyhadalongwaytogothoughitcostgovernmentsalotwhichmadeitunpopularatthattime.FRTattractedwideattentionafterSeptember112001andithasbeenwidelyusednow. RecognizingthepotentialabuseintheuseofFRTMicrosoftisaskingtheU.S.governmenttostudyfacialrecognitionFRandkeepadosewatchoveritsuse.PersonallyIholdthisisapositivejobthatMicrosoftisdoing.FRThasgrowntobesopowerful.Itcanbeusedtoidentifypeopleinphotosvideofeedsandofcourseinpersonwithouttheirpermission. Mr.BradfordSmithMicrosoft'spresidentsuggeststhatgovernmentsaroundtheworldshouldexaminecommercialusesofFR.TheEuropeanUnionEUisaheadofothersinthisaspectthankstoitstoughnewdataprotectionlawwhichforbidscompaniestogatherthebiometric生物特征dataneededforfacialrecognitionwithoutfirstobtaininguserspermission. SanFranciscohasbecomethefirstcityintheUSAtoforbidusingfacialrecognitionsoftware.AndOaklanddiscussedasimilarrulelastmonth.SanFranciscohassaidthatpoliceandotherpublicdepartmentscannotuseFRT.SanFranciscoalreadyusessurveillance监视camerasforreadingcarnumberplatesandpoliceofficerswearbodycameras.SanFranciscoofficialAaronPeskinsaidFRTwaslikeBigBrotherfromthebook1984byGeorgeOrwell.ThephraseBigBrotherisnowusedtodescribeattemptstoincreasesurveillanceandspyoncitizens.Mr.PeskinsaidWecanhavegoodpolicingwithoutbeingapolicestate. 1WhywasFRTunpopularinthe1990s? A.Itwasinconvenienttouse. B.Itwasexpensivetoproduce. C.Itsaccuracyneededimproving. D.Itsrolesweren'tfullyfoundout. 2Whatistheauthor'sattitudetoMicrosoft'sadviceonthemanagementofFRT? A.Hesaysyestoit. B.Heisdoubtfulofit. C.Hefeelsworriedaboutit. D.Hecan'tunderstandit. 3WhohasdonethemostworktomakepeopleuseFRTinarightway? A.SanFrancisco. B.Microsoft. C.Oakland. D.TheEU. 4Whatwouldbethebesttitleforthetext? A.BigBrotherTechnology B.DifferentUsesofFRT C.StrongProtectionofFRT D.FRData'sDisadvantages
如图在平面直角坐标系中已知点A﹣36B﹣9﹣3以原点O为位似中心相似比为把△ABO缩小则点A的对应点A′的坐标是
如图所示将形状大小完全相同的“●”和线段按照一定规律摆成下列图形第1幅图形中“●”的个数为a1第2幅图形中“●”的个数为a2第3幅图形中“●”的个数为a3…以此类推则+++…+的值为
MyhusbandandIonlyhaveonecar.SoafterworkIalwayswalktohisofficeandwaitforhimto1mehome. OnedaywhileIwaswaitingforhimabeautifulcar2nearme.IwasbusilyadmiringthecarwhenI3thedriver.Honestlyshewasprobablythe4womanIhadeverseenoutsideofamoviescreen.Her5wereasblueasseaandshehadteethlikeanevenrowofpearls.Minuteslateramancameoutofthebuildingandwalkedovertoher.Theykissedanddroveoff. Sittingthere6injeansandaT﹣shirtIwantedtocry.Itisso7thatpeoplehaveitall. ThenextweekIsawheragainandafterthatitbecamealmost8toseeher.Iwould9ifsheandherhusbandateoutalotandwheretheywent.Iwantedherto10thecarsoIcouldseeherinfulllength.Didshe11classyhigh﹣heeledshoes? Afewweekslaterthisquestionwas12forme. Iwaswaitinginmyusualplaceandthewoman'shusbandcameovertotheircar.Heopenedthedoor.13theprettywomanwalkedaroundtothepassengerside14onawalkingstick.She15onelegwithherhandsandthentheotherone;shehadaprosthetic假肢onherleftlegandabrace支架herrightone. AstheydroveawayIbegantocry.WhenmyhusbandarrivedItoldhimwhathad16.Hesaidheknewherhusbandandthatwhentheladywas12yearsoldshehadbeen17inacarthatgotstuckontherailroadtracks.Bothherparentswerekilled.Therailcompanymadealargesettlementwithherbecausethecrossinghadno18;thatiswhysheownedsuchanicecar. ForweeksIhad19thiswomanandherwayoflife.NowIrealizehowluckyIam.Whenyoumeetapersonwhoseemstobemuchbetteroffthanyoudon'tbefooledby20. 1A.walk B.drive C.fly D.ship 2A.rangup B.spedup C.wentup D.pulledup 3A.noticed B.recognized C.greeted D.observed 4A.prettiest B.proudest C.strictest D.strongest 5A.fingers B.ears C.eyes D.nose 6A.covered B.wrapped C.put D.dressed 7A.touching B.unfair C.interesting D.surprising 8A.boring B.stressful C.routine D.amusing 9A.refer B.whisper C.wonder D.expect 10A.getoutof B.getinto C.goup D.gothrough 11A.wear B.oppose C.abuse D.ban 12A.raised B.handled C.solved D.answered 13A.Immediately B.Slowly C.Curiously D.Fortunately 14A.putting B.carrying C.turning D.leaning 15A.pressed B.skipped C.lifted D.slid 16A.disappeared B.changed C.happened D.lost 17A.limited B.trapped C.lost D.sunk 18A.announcement B.signals C.appeal D.station 19A.envied B.ignored C.respected D.understood 20A.confidence B.confusion C.ambition D.appearance
国际油价随着供需关系持续波动特别是主要产油国的日产量会影响油价的走势某段时间某石油输出大国每天石油的日产量约为1200万桶时石油的国际油价是每桶56美元每桶成本约为40美元．据统计当日产量减少50万桶时每桶国际油价将会提高7美元但当每桶价格高于100美元时石油需求量又会大幅减少从而严重影响该国的国家经济 1若某段时间该国当日的石油日产量最多1050万桶则国际石油的价格最低是多少美元桶 2该国为了实现一天的利润为3300万美元则日产量是多少万桶
NewYorkCitymuseumshavefilled2019withexcitingexhibitions.Herearehighlightsasyouschedulethatleisuretime: TheStatueofLibertyMuseum LibertyIsland StartingMay16 AbrandnewmuseumabouttheStatueofLibertyisopeningonLibertyIslandwiththreeroomswithinthespaceincludinga3Dimmersive拟真的theaterthatwillplayan8﹣to﹣10﹣minutefilmthattellsabriefhistoryofitsbeginningsanditsmeanings. 'CyclingintheCity' MuseumoftheCityofNewYork JulythroughDecember TheMuseumoftheCityofNewYorkisopeninganewexhibitaboutthehistoryofcyclingandthecity'srelationshipwithitcalledCyclingintheCity:A200﹣YearHistorythrough50objectsincluding14bicyclesphotographsandcyclingclothing.TheexhibitionwillalsofeatureancientandmodernfilmsshownonalargescreenwhichwillenablevisitorstoexperiencevirtualcyclinglandscapesviaZwiftanonlinecyclingvideogame. 'ShePersists:ACenturyofWomenArtistsinNewYorkCity' GracieMansion StartingJuly14 With60worksbymorethan40artistsGracieMansioniscelebratingtheexcellentworksofwomenwhocalledNewYorkhomeinthisnewexhibit.Thepaintingsfilmphotographycraftanddesignaredividedintothreethemes:bodyasabattlegroundpicturingpeopleandexpandingabstraction. MuseumoftheDog 101ParkAve. StartingOct.6 Anentireartmuseumaboutdogshasarrivedin Manhattanwithalargetwo﹣floorcollectionofpaintingssculpturesandrarepiecesfromfamousdogartists.ThereareinteractiveexhibitslikeaFindYourMatchandaMeettheBreedstouchscreenwhereyoucanexploredifferentbreeds'featurestraitsandhistories. 1Atwhichplacecanpeoplelearnthehistoryofcycling? A.LibertyIsland B.MuseumoftheCityofNewYork C.GracieMansion D.101ParkAve. 2WhichofthefollowingisNOTopenduringthesummercamp? A.TheStatueofLibertyMuseum B.'CyclingintheCity' C.'ShePersists:ACenturyofWomenArtistsinNewYorkCity' D.MuseumoftheDog 3Whichofthefollowingisatraditionalexhibitionwithoutusingdigitaltechnology? A.TheStatueofLibertyMuseum B.'CyclingintheCity' C.'ShePersists:ACenturyofWomenArtistsinNewYorkCity' D.MuseumoftheDog
Imagineyouareopeningyourowncompanyandwanttohireamanager.Youhavetwoapplicantsandtheyarebothskilledandexperiencedsowhowouldyouratherhire:JuliaWatsonorShobhaBhattacharya?ChancesarcthatyouwouldpreferWalsonright?Butwhy? EasynamesareregardedasmorefamiliarlessriskyandlessdangerousErynNewmanascientistatVictoriaUniversityofWellingtonNewZealandtoldScientificAmerican.Asaresultpeoplewitheasiernamesareoftenconsideredtobemoretrustworthy. ThisiswhatNewmanandherteammateshavefoundintheirrecentstudy.Intheexperimenttheypicked218differentforeignnamesincludingdifficult﹣to﹣pronounceoneslikeYevgeniDherzhinskyandeasynameslikeBodoWallmeyer.Theythenattachedeachnamewithastatementsuchasturtlesaredeafandgiraffesaretheonlymammalsthatcannotjumpandaskedvolunteerswhethertheythoughtthestatementsweretrue.Theresultsshowedthatstatementsconnectedtoeasiernamesweremoreoftenrankedasbelievablethanthosebelongingtodifficultnamesregardlessofwhatthetruthreallywas. Infactpreviousstudieshavealreadyfoundthatourjudgmentsaboutproductscanbeaffectedbytheirnames.Forexamplewetendtothinkofafoodadditivewithaneasiernameassaferandastock股票withaneasiernameasmoreprofitable赢利的accordingtoMedicalDaily.Butresearcherspointedoutthatthiseffectcanchangedependingonwheresomeonecomesfrom.ForexampleanativeBritishmanmayfindYevgeniDherzhinskyhardtopronouncewhileRussianpeoplecansayitwithouteffort. Newmanhopesthatthisfindingcanmakeusbetterseeourbias.It'snotjustunfairtopeoplethatwemakejudgmentsbasedonfeelingsratherthanfacts﹣itcansometimeshaveseriousresults.Forexamplewemaychoosetobelievecertaineyewitnessesincourtsimplybecausetheirnamessoundmoretrustworthyeveniftheyareactuallylying.Orwemayletgoofqualifiedjobapplicantsduetotheirdifficultnames. NowifyoucouldmakethatdecisionagainwouldyoustillpreferJuliaWatsontoShobhaBhattacharya? 1WhydoestheauthorrefertothechoicebetweenthetwonamesinParagraph1? A.Tointroducehowtochooseagoodapplicant. B.Toshoweasynamesareconsideredmorerisky. C.Toexplainwhatkindsofapplicantsareconsideredreliable. D.Tomakereaderswonderwhyapplicantswitheasynamesarepreferred. 2WhatdidNewmanandherteammatesdiscoverintheirexperiment? A.Hard﹣to﹣pronouncenamesdidn'tinfluencehowthevolunteersjudged. B.Statementspairedwitheasynameswereratedasreliableinmanycases. C.Volunteerswitheasiernamesweremorelikelytochoosetruestatements. D.Statementsconnectedwithdifficultnamesweremoretrustedbyvolunteers. 3TheunderlinedwordbiasinParagraph5probablymeans A.realfact B.wisejudgment C.goodunderstanding D.unreasonablepreference 4Whatcanbeconcludedfromthepassage? A.Weshouldthinktwicebeforewemakeadecision. B.Russianshavemorefairnesstopeople'snamesthantheBritish. C.Judgingpeoplebasedontheirnamesmaycauseseriousproblems. D.Theharderyournameispronouncedthemorelikelyyouwillgetajob.
下列运算正确的是
Manyscientistsbelieveourloveofsugarmayactuallybeanaddiction瘾.Whenweeatordrinksugaryfoodsthesugarentersourbloodandaffectspartsofourbrainwhichmakesusfeelgood.Thenthegoodfeelinggoesawayleavinguswantingmore.1Inthiswayitisinfactanaddictivedrugonethatdoctorssuggestweallcutdownon. ItseemslikeeverytimeIstudyanillnessandsearchforthefirstcauseIfindmywaybacktosugarsaysscientistRichardJohnson2Why?SugarwebelieveisoneofcausesoftheproblemifnotthemajorreasonsaysJohnson. Ourbodiesaredesignedtosurviveonverylittlesugar.Earlyhumansoftenhadverylittlefoodsoourbodieslearnedtobeveryefficientinstoringsugarasfat.Inthiswaywehadenergystoredforwhentherewasnofood.Buttodaymostpeoplehavemorethanenough.3Wellwhatisthesolution?It'sobviousthatweneedtoeatlesssugar.4Frombreakfastcereals谷物toafter﹣dinnerdessertsourfoodsareincreasinglyfilledwithit. 5Manyschoolsarereplacingsugarydessertswithhealthierfoodlikefruit.Otherschoolsarcgrowingtheirownfoodingardensorbuildingfacilities设施likewalkingtrackssostudentsandothersinthecommunitycanexercise. A.Buttherearethosewhoarefightingbackagainstsugar. B.High﹣sugarfoodscannegativelyaffectyourenergylevels. C.Sotheverythingthatoncesavedusmaynowbekillingus. D.Alltastyfoodsdothisbutsugarhasaparticularlystrongeffect. E.Thetroubleisintoday'sworldit'sextremelydifficulttoavoid. F.Theaveragepersontakesinabout24kilogramsofsugareachyear. G.1/3ofadultsworldwidehavehighbloodpressureand2.5billionsufferfromobesity.
如图1在▱ABCD中BE⊥BC交AD于E且BE＝BCCF平分∠BCD交AB于F交BE于G连接EF． 1若∠A＝60°CG＝4求EF的长 2如图2若BM平分∠ABE交GF于点M且EF＝GB求证AE+FM＝CD．
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. Ourschoolhasalonghistory.Itissuchbeautiful.ButrecentlyIoftenfindsomestudentsdosomethingbadtoourschool.ForanexamplelastFridayIsawastudentspittinginthecorneroftheschoollibrary.Itellhimnottodothatbuthedidn'trespondtomeandwentstraightawaywhatmademesad.There'snodoubtthatitisourdutykeepourschoolcleanandtidy.Weshouldn'tleaverubbisheshereandthere.Drawpicturesinthewalliscertainlyabadhabit.IfeveryoneofuscontributemoretoourschoolImsureshewillbecomemoreandmorebeautifully.
OnthenightofAugust242001everythingchangedwhenmyfriendscarhitawallwithmeinside.IlostmostofmyrightlegandIwasleftbleedingwithseveralbrokenbones.Atthehospitalalthoughmybodywasweakmymindwasstillveryclear.Ijustkepttellingmyselftoholdon.AweeklaterImadeadealwiththedoctorsthatonceIcouldrollontomysideIcouldleave. TwoweekslaterIwasallowedtogohome.AlthoughIleftthehospitalthefightwasfarfromover.Myleftkneewasbadlyinjuredwhichresultedindifferentsurgeries手术overthenextfewyears.AndsoonmoreofmyrightleghadtoberemovedThismadeithardertowearmyfalselegsoIdonatedittoanursewhocouldn'taffordoneforherself.ThejoyofbeingabletoprovidethisgifttosomeoneelsewasgreaterthanthehappinessIfeltonanydayIwasabletowearitmyself. Peopleoftentellmethey'reproudofmeforstayingstrong.Butinmymindstayingstronghasalwaysbeenmyonlychoice.SoonthedayIleftthehospitalImadeapromisetomyselftoalwayslivelifetothefullest. NowImaynotbeabletodothingsthewayeverybodyelsedoesthembutstillIalwaysfindawaytodothem.IsoonsettledintoeverydaylifeagainuntilonedayIrealizedIwasn'tlivingmylifeasfullyasIwantedto. After13yearsofthinkingthatIwasconfidentIhadanunfamiliarfeelingsweepoverme.ForthefirsttimeinmylifeIwasnotonlyconfidentbutIwantedtohelpthosearoundme.In2014Ievenstartedmodeling.MydreamisthatonedayalittlegirlwillseemeinamagazineandsayWowshe'sbeautifulandsheonlyhasoneleg.IcoulddothattoosomedayeventhoughIhaveadisability. 1Howdidtheauthorfeelafterthecaraccident? A.Shefeltluckythatshewasstillalive. B.Shetookapositiveattitudetowardlife. C.Shecouldn'tacceptthelossofherleg. D.Shecomplainedthatlifewasunfairtoher. 2Whatmadetheauthorfeelhappyaccordingtothetext? A.Shecouldwearherfalselegagain. B.Shehadlivedherlifetothefullest. C.Shewasabletoofferhelptoothers. D.Shecoulddothingslikeeverybodyelse. 3Whydidtheauthorstartmodelingin2014? A.Toappearonthecoverofamagazine. B.Toprovedisabledpeoplecouldalsosucceed. C.Tochallengeherselfbytryingsomethingnew. D.Toencourageotherstobeconfidentofthemselves. 4Whatwastheauthor'smainpurposeinwritingthetext? A.Tostresstheimportanceofhavingadream B.Toshowhowdifficultlifeisfordisabledpeople. C.Togiveadvicetodisabledpeopleonhowtomakealiving. D.Toshareherpastexperiencesandhowshediscoveredherdream.
为庆祝新中国成立七十周年你们学校即将举办一次大型文艺汇演GrandArtandCulturalShow.假如你是李华请给你们学校留学生Eric写一封邮件邀请他参加观看. 内容包括: 1.汇演时间和地点; 2.汇演内容和意义. 注意: 1.词数:100左右. 2.可以适当增加细节以使行文连贯.
Theinternetisn'talwaysahappyplace.Buttherearegroupstryingtochangethat.KuakuaqunorpraisinggrouponWechatinwhichpeoplesendoutcomplimentsandpositivemessagesarebecomingpopularamonguniversitystudentsinChina. PraisinggroupshavebeenfoundedbystudentsfromseveraluniversitiessuchasFudanUniversityCommunicationUniversityofChinaHuazhongUniversityofScienceandTechnology.PeoplecanevenbuymembershipsofsuchgroupsononlineplatformslikeTaobao.Onceadmittedtheymakecomplimentarycommentsabouteachotherandevenasktobecomplimentedonparticularthings. ThepraisinggroupscomeatatimewhenthementalhealthofyoungChineseisgettingattention.AsyoungChineseseekcompanyandconfidencethepraisinggroupsmeetalotofpsychologicalneeds.ThegroupallowsmetoseethegoodqualitiesinmyselfthatIoftenoverlookandlookatthebrightsideofeverything.KindnessfromstrangerscanhelpmefeelmuchbetterTianJiayin22toldChinaDaily. ThepopularityofchatgroupsisalsoareflectionofChineseculturereportedGlobalTimes.AsmanyyoungChineseareraisedtobemodestit'suncommonforthemtoopenlyseekandgivepraise.Asaresulttheydesirecomplimentsastheygrowup.Ifthekidsgotmorepraisefromparentsandteacherstheirdesireforpraisewouldn'tbesostrongsaidDaiJiapsychologistfromHunanUniversityofCommerce. ButChenKanapsychologistfromFudanUniversitywarnedthatmembersofpraisinggroupsshouldbecautiousaboutgivingorreceivingpraise.Thebiggestriskistheconstantemphasisonthe‘falseself'whichmakesithardertoseethe‘trueself'shesaid. 1WhatdoestheunderlinedwordcomplimentsinParagraph1mean? A.praises B.questions C.advice D.information 2WhydomanyChineseuniversitystudentslikeKuakuaqun? A.ItgivesthemadiscountonTaobao. B.Ithelpsthemwiththeirstudies. C.Itmakesthemfeelconfident. D.Ithelpsthemmakenewfriends. 3WhatdoesChenKanthinkofgivingorreceivingpraise? A.Receivingpraiseismorehelpfulthanbeingmodest. B.Parentsandteachersshouldgiveyoungpeoplemorepraise. C.kidsshouldbeencouragedtoopenlyseekandgivepraise. D.Toomuchpraisemightstopkidsfromseeingtheirtrueselves. 4Whatisthemainideaofthearticle? A.Tipsforgettingmotivated B.ThelostgenerationinChina C.OriginofthepraisingcultureinChina D.AdvantagesanddisadvantagesofKuakuaqun
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，则点 的坐标是（ ） A.（0，7） B.（0，6） （0，8） （0，6） 
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