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如图，有两座建筑物AB与CD，从A测得建筑物顶部D的仰角为16°，在BC上有一点E，点E到B的距离为24米，从E测得建筑物的顶部A、D的仰角分别为37°、45°．求建筑物CD的高度．（参考数据：ta...
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如图两座建筑物AB及CD其中AC距离为60米在AB的顶点B处测得CD的顶部D的仰角β=30°测得其底
已知如图初二•一班数学兴趣小组为了测量河两岸建筑物AB和建筑物CD的水平距离AC他们首先在A点处测
如图已知两座高度相等的建筑物ABCD的水平距离BC＝60米在建筑物CD上有一铁塔PD在塔顶P.处观察
如图线段ABDC分别表示甲乙两座建筑物的高AB⊥BCDC⊥BC两建筑物的水平距离BC为30米若甲建筑
如图为了测量某建筑物CD的高度先在地面上用测角仪自A.处测得建筑物顶部的仰角是α然后在水平地面上向建
如图两座相距60m的建筑物ABCD的高度分别为20m50mBD为水平面则从建筑物AB的顶端
看建筑物CD的张角为( ) A.30°
45°
60°
75°
两座建筑AB与CD其地面距离AC为50.4米从AB的顶点B测得CD的顶部D的仰角β=30°测得其底部
如图两座相距60m的建筑物ABCD的高度分别为20m50mBD为水平面则从建筑物AB的顶端
看建筑物CD的张角为( ).
A.30°
45°
60°
75°
如图ABCD为两个建筑物建筑物AB的高度为60m从建筑物AB的顶部A.点测得建筑物CD的顶部C.点的
如图线段ABDC分别表示甲乙两座楼房的高AB⊥BCDC⊥BC两建筑物间距离BC=30米若甲建筑物高A
如图线段ABDC分别表示甲乙两座建筑物的高AB⊥BCDC⊥BC两建筑物的水平距离BC为30米若甲建筑
如图两座建筑物AB及CD其中AC距离为60米在AB的顶点B处测得CD的顶部D的仰角β=30°测得其底
两座相距60m的建筑物ABCD的高度分别为20m50mBD为水平面则从建筑物AB的顶端A.看建筑物C
如图两座建筑物AB及CD其中AC距离为50米在AB的顶点B处测得CD的顶部D的仰角β=30°测得其
如图线段ABDC分别表示甲乙两座建筑物的高AB⊥BCDC⊥BC两建筑物的水平距离BC为30米若甲建筑
如图ABCD为两栋建筑物建筑物CD的高度为20m从建筑物CD的顶部D点测得建筑物AB的顶部A点的仰角
两座建筑AB与CD其地面距离AC为50.4米从AB的顶点B测得CD的顶部D的仰角β=25°测得其底部
如图为了测量某建筑物CD的高度先在地面上用测角仪自A.处测得建筑物顶部的仰角是α然后在水平地面上向建
如图甲乙为两座建筑物它们之间的水平距离BC为30m在A.点测得D.点的仰角∠EAD为45°在B.点测
如图两座建筑物AB与CD其水平距离BD为30米在从AB的顶点A.处用高1米的测角仪AE测得CD的顶部
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6分Itturnsoutthatnoddingoffinclassmaynotbeabadideaasanewstudyhasshownthatgoingtosleepshortlyafterlearningnewmaterialsisthebestwaytorememberthem. AccordingtoUSleadauthorJessicaPayneapsychologistattheUniversityofNotreDameinIndiananoddingoffafterlearningsomethingnewisliketellingthesleepingbrainwhattoremember.Alongwithcolleaguesshestudied207studentswhosleptforatleastsixhourspernight.Studentswererandomlyassignedtostudysomethingdeclarative陈述的at9a.m.or9p.m.andreturnedfortesting30minutes12hoursor24hourslater. Declarativememoryreferstotheabilitytoconsciouslyrememberfactsandeventsandcanbedividedintomemoryforeventsandmemoryforfactsabouttheworld.Peopleusebothtypesofmemoryeveryday﹣rememberingwheretheyparkedtodayorlearninghowacolleaguepreferstobecalled. Atthe12﹣hourretestmemorywasbetterfollowinganightofsleepcomparedtoadayofwakefulness.Atthe24﹣hourretestwithallstudentshavingreceivedbothafullnightofsleepandafulldayofwakefulnessstudents'memoriesweregreaterwhensleephappenedshortlyafterlearningratherthanfollowingafulldayofwakefulness. Ourstudyconfirmsthatsleepingdirectlyafterlearningsomethingnewisbeneficialformemory.What'sspecialforthisstudyisthatwehaveshownsleep'sinfluenceondeclarativememoryPaynesaid.Sincewefoundthatsleepingsoonafterlearningbenefitedbothtypesofmemorythismeansthatitwouldbeagoodthingtogooveranyinformationyouneedtorememberbeforegoingtobed.Insomesenseyoumaybetellingthesleepingbrainwhattoconsolidate. 1What'sthemainideaofthetext? A.Howtoimproveone'smemoryisadifficultproblem. B.Noddingoffafterlearningsomethingnewhelpsrememberit. C.Studentsshouldnodoffinclassaftertheylearnnewmaterials. D.Thebestwaytoremembernewmaterialsistonodoffinclass. 2Wecanlearnaboutthestudythat. A.JessicaPayneandhercolleaguesweretested B.207studentswereeagertotakethetest C.ittestedstudentsstudyingsomethingdeclarative D.people'smemorycanbedividedintotwotypes 3Paragraph4mainlytellsus. A.students'memoriesarethebestiftheysleepfor12hourseachday B.sleepingfor24hourscontributestoimprovingstudents'memories C.afulldayofwakefulnesscanmakestudents'memoriesimprovedgreatly D.students'memoriesarebetterwhensleephappensshortlyafterlearning
8分Ainnovativefloatingdamthattrapsplasticbagsbottlesandotherpiecespollutingtheworld'soceanswillbeusedintheNorthSeaforthefirsttimein2016.TheOceanCleanupplanstoinstallthisrevolutionary328﹣foot﹣longbarrierinthesummeroffthecoastoftheNetherlands. ComparedtoothercleanupmethodsOceanCleanup'sbarrierusescurrentstopassivelyensnare诱导wavesofgarbagewhileallowingfishandotherseacreaturesthroughaccordingtoanewsrelease.Researchershavetestedthefloatingdamsusingextensivecomputermodelingandscalemodelincontrolledenvironments.Sincetheyhaveprovedsuccessfulengineersbelieveitistimetomovethebarriertothenextstageofdevelopmentopenwaters. Eacharmoffloatingdamhasascreenthathangs10feetbelowthewater'ssurfaceblockingwasteanddirectingittoacentralpointwhereitcanbecollectedforrecycling.Camerasandsensorswillregularlymonitorthemotionsofthebarrierandtheloadsonthesystem.Thatwayresearcherscanbetterassessiftheirdesigncanbeusedtocleanuptheworld'soceanicgarbagepatches. TheGreatPacificGarbagePatchspanswatersfromtheWestCoastofNorthAmericatoJapan.Strongcurrentsdrawlargeamountsofplasticdebris废弃物tothisarea.Researchershopetomakea62mile﹣longV﹣shapedbarrierinthisareain2020. Takingcareoftheworld'soceangarbageproblemisoneofthelargestenvironmentalchallengesmankindfacestoday.DutchinnovatorBoyanSlatsaid.NotonlywillthisfirstcleanuptaskcontributetocleanerwatersandcoastsbutitisanessentialsteptowardsourgoalofcleaninguptheGreatPacificgarbagepatch. 1Wecanlearnfromthepassagethatthefloatingdamfromthistext? A.Itisa62mile﹣longV﹣shapedbarrier. B.Itbeganworkingintheocean. C.Itcanprotectmanyseaanimals. D.Itwillbeputintousein2016. 2HowdoestheOceanCleanup'sbarrierfunction? A.Bycollectingandrecyclingwaste. B.Byusingcurrentstopassivelytrapwavesofgarbage. C.Byblockingplasticbagsbottlesandotherpiecespollutingtheoceans. D.Byprovidingseaanimalswithmuchcleanerwater. 3Thescreenhanging10feetbelowthewater'ssurfaceaimsto. A.movethebarriertothenextstage B.regularlymonitorthemotionsofthebarrier C.giveresearchersabetterassessment D.helptosendthewastetoaproperplace 4WhatisBoyanSlat'sattitudetowardsthefloatingdam? A.Casual. B.Critical. C.positive. D.Passive.
8分Instagramisafastbeautifulandfunwaytoshareyourlifewithfriendsandfamily.TakeapictureorvideochooseafiltertotransformitslookandfeelandthenposttoInstagram﹣it'sthateasy.YoucanevensharetoFacebook.Twitterandmore.It'sanewwaytoseetheworld.SomanyphotosoffoodarecontainedonInstagram﹣nowapop﹣updinerinLondonistakingadvantageofthisnewtrendbylettingpeoplesettlethebillfortheirmealssimplybyuploadingphotosoftheirdishestosocialnetworks. Ialwaysthoughtpeople'stakingpicturesoftheirfoodwaskindofsillybutatthisnewpop﹣uprestaurantintheUKI'dprobablydoittoo.ThePictureHouseistheworld'sfirstpay﹣by﹣photorestaurant﹣youorderclickaphotoofthefoodshareonInstagramandeatforfree! TherestaurantbelongstofrozenfoodgiantBirdsEyewhocameupwiththeideatocashinonpeople'saddictionwithphotographingfoodandsharingthepicturesonline.TheyconductedasurveyandfoundoutthatmorethanhalfoftheBritishpopulationregularlytookpicturesoftheirmeals.Sotheyrealizeditwasabetterwaytoadvertisetheirnewdiningrange. Thepop﹣updinerwasopeninSohoLondonforthreedaysinMayandisnowmovingtoothermajorUKcities.Theyservetwo﹣coursemealsthatcustomersdon'thavetopayforiftheyphotoandlnstagramit. TherestaurantisapartofBirdsEye'sFoodforLifecampaignanewmarketingprojectthataimsatchangingthewaypeoplelookatfrozenfood.Takingphotosoffoodenablespeopletoshowoffandtosharetheirmealtimemoments﹣fromtheeverydaytothespecialsaidmarketingdirectorMargaretJobling. ThereactiontoThePictureHousehasbeengreatsofarAndthepay﹣by﹣pictureconcepthasproventobeaneffectiveway.Alternativepaymentmethodsareactuallygainingpopularityamongalotofbusinesses.LastyearinacafeinGermanycustomerspaybyhowmuchtimetheyspendtherenotbywhattheyeat. 1Instagramprobablyis. A.arestaurantfreeofcharge B.acampaignofFoodforLife'' C.aprogramusedtosharephotos D.anewmarketingproject 2What'stheauthor'sattitudetothisnewtrend? A.Confused B.Unconcerned C.Opposed D.Interested 3ThePictureHouseencouragessharingphotosofitsfoodto. A.raisethepriceoffrozenfood B.attractmorecustomers C.createanewsocialmediatrend D.rewardtheregularcustomers 4Whichofthefollowingcanserveasthebesttitleforthepassage? A.PaybyPicture B.ThePop﹣upDiner C.NoNeedtoPay D.FoodforLife
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如图四边形ABCD是⊙O的内接四边形若∠BOD＝88°则∠BCD的度数是
25分假定你是李华你的美国笔友Tom发来电子邮件询问你最近的情况.昨天你校举办了学生成年仪式请你给Tom回一份电子邮件说说这件事内容如下 1宣誓和感谢 2互赠礼物和节目表演 3你的感受. 注意1词数100左右2可适当增加细节以使行文连贯.3成年仪式growing﹣upceremony宣誓makeanoath DearTom Itisgreattohavereceivedyouremail. Yours LiHua
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不等式组的解集是
6分WhatareAmericanhighschoolslike?WellI'mhappytotellyouwhatIknow. WhenIstartedschoolhereithadalreadybeenaweeksincetheschoolopened.Atthisschoolfreshmenusuallygoonatripforaboutthreedaysatthebeginningofschool.UnfortunatelyImissedthatwonderfultrip.whichwouldhavebeenthebesttimetogettoknowmyclassmates.Iwasreallysad.IwishedI'dknownaboutitearlier. DespitethedisappointmenthoweverIgraduallyadaptedtomynewlifeandschool. Thereisaspaceinthebasementoftheteachingbuildingwherestudentschatandmeeteachother.Aswedonotalwayshavethesameclassroomsandclassmatestheschoolwantsustogettoknoweachotherthere.Studentsusuallycometoschoolearlysitinthatspaceandhavefun.Aroundthespacetherearemanylockersforstudentstoleavetheirbooksinsothatstudentsdonothavetocarryaheavyschoolbageverywhere. Itreallysurprisesmethatwehavealmostnotextbooks.WeonlyhavetextbooksforWorldHistoryandAlgebraandtheyarebigandheavylikebricks.Forotherclassesweonlyneedbinders活页夹withpaperinthem.Withouttextbooksstudentslearnthingsfreelyandactively.Forexamplemyhumanitiesteacherjustteachesuswhatisinhermindatthetime.Weneverknowwhatwewilllearn. AnotherdifferencebetweenAmericanschoolsandChineseschoolsisthatAmericanschoolscareaboutstudents'moralitymorethantheiracademicstudies.Forexampleifyoudonotfinishyourhomeworkyouwilljustbeaskedtodoitlaterbutifyoucheatorlieyouwillgetawarningorevenbekickedout. IthinkthatmoststudentsherearegoodatschoolworkaswellbutcomparedtoChinesestudentstheycanmakelearningamorejoyfulexperience.Ithinkweshouldtakethegoodpointsfromourtwodifferentkindsofeducationtoperfectourapproachtostudying. 1Whatwasthewritersadfor? A.Hewaslateforschool. B.Hemissedthetripatthebeginningofschool. C.Hedidn'tknowanyone. D.Americanstudentslookeddownuponhim. 2Whydostudentsgotothebasementoftheteachingbuilding? A.Toattendclass. B.Toshareaclassroom. C.Tohavefun. D.Tomeetteachers. 3AccordingtothepassageinAmericanhighschools. A.youarelikelytobekickedoutifyoucheat B.you'llbepunishedifyoudonotfinishyourhomework C.studentsarebetteratschoolworkthanChinesestudents D.studentscaremuchaboutthegradestheyget
30分OnedayIwenttomyfavoritecafeforlunch.I1aburgerandwenttotheoutdoorseats.Whilewaitingformymealahomelessmanonabicyclestoppedtoaskiftherewasagrocerystorenearby.AfterIgavehim2heaskedifIhad3fromSantaClaraUniversity.IwaswearingaSCUT﹣shirt.Itoldhimyes.LittledidIknowthatthis4responsewouldleadtoa90﹣minuteconversation.ThemanMichaeltoldmehewasveryintelligent.5drugusehadruinedbothhisformaleducationandhispursuitof6inhiswork.Hedriftedfromonetopictoanother7thefactthatIwasreadyformylunch. Heclearlyhadmoreofa8totalkthanIdid.Imadeevery9togivehimmyfullattentionnever10ourtalkwouldgoonandon…EventuallyIdideatmymealbitebybite11responsesinourconversation.Michaelwasabitstrange.12hisinterestsandviewpoints.Wehadlittlein13buthewasfascinatedwithtalkingwithashe14itintelligentpeople.IhavetoadmitIwishourconversationhadbeen15totenorfifteenminutesbutwhenMichaelfinally16offhethankedmeforlisteningso17tohimandformy18totalkwithhimforsolong.ItwasthenthatI19thatjustmaybethatwasmypurposeinlifefortoday…tobethereinthatplaceatthattimeto20inthatconversation. 1A.booked B.ordered C.made D.selected 2A.commands B.contributions C.introductions D.directions 3A.quitted B.1eft C.graduated D.1earned 4A.simple B.careless C.timely D.significant 5A.Unfortunately B.Unnecessarily C.Consequently D.Additionally 6A.power B.success C.luck D.strength 7A.admitting B.recognizing C.ignoring D.covering 8A.benefit B.ambition C.need D.chance 9A.use B.difference C.decision D.effort 10A.wondering B.expecting C.attempting D.requesting 11A.between B.in C.beyond D.among 12A.intermsof B.infavorof C.incaseof D.inplaceof 13A.public B.vain C.particu1ar D.common 14A.took B.saw C.put D.got 15A.applied B.1imited C.compared D.referred 16A.drove B.raced C.rode D.turned 17A.attentively B.clearly C.honestly D.casually 18A.weakness B.quietness C.business D.willingness 19A.struck B.occurred C.realized D.complained 20A.result B.engage C.1ead D.compete
8分NewYork﹣﹣Leadersfrom130nationsaregatheringattheUnitedNationstosignthehistoricclimatedealreachedinParislastDecember.Thesigninghappensonthe46thanniversaryofEarthDay.Since1970everyyearpeoplearoundtheworldobservethedaybydoingdifferentactivitiestodeanuptheenvironment. OnApril221970U.S.SenatorGaylordNelsonorganizedthefirstEarthDaywithanationalteach﹣inontheenvironment.EarthDayNetworksays20millionAmericansgatheredinthestreetsparksandmeeting﹣hallstodemonstrateforahealthysustainableenvironmentinlargeralliesacrossthecountry.Thisyearmorethanabillionpeoplewillcelebratethedaybyworkingforacleanenvironment.Allthecountriesshallcometoanagreementwhichcallsforawaytostoptheeffectsofwarmingtheplanet.Thatincludesmovingtowardsusingrenewableenergies. Puttingtheplanintoactionwilltakeseveralsteps.Firstthe130leadersgatheringinNewYorkFridaywillsigntheagreement.Thentheirgovernmentsmustratifytoputitintoaction. SelwinHartwhoisthedirectoroftheU.N.ClimateChangeSupportTeamsaysatleast55partiesmustratifytheagreement.ChinaandtheU.S.arethebiggestcontributorstotheworld'sglobalgreenhousegases.Togetherthetwocountriesareresponsibleforabout40percentoftheworld'semissions.BoththeU.S.andChinasupporttheagreement.Theyarepushingforitsearlyadoptionbyallthenations. Thetargetdatetostarttheagreementis2020.Thiscouldchange.Ifallthecountriesratifyitquicklyitcouldhappenthisyearorinearly2017. 1ForwhatpurposewasEarthDayfirstorganized? A.Tosignmoreclimate﹣relatedagreements. B.Toraisepeople'sawarenessofclimatechanges. C.Topromotepeople'shealthylifestyles. D.Toeducatepeopleaboutthevalueoftheagreement. 2Whichofthefollowingstatementistrue? A.Thehistoricclimatedealwasreachedlastyear. B.Largenumbersofleadersgathereveryyear. C.ChinaandU.S.contributemosttotheagreement. D.Allthenationswilladopttheagreementthisyear. 3Whatdoestheunderlinedwordratifyinparagraphthreeprobablymean? A.Tooppose. B.Toapprove C.Tosubmit D.Toconsult. 4Whatistheauthor'sattitudetothefutureoftheagreement? A.indifferent B.Objective. C.Critical. D.Optimistic
10分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.作文中共有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子符号∧并在其下面写出该加的词. 删除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. Thoughagreatprogresshasbeenmadeinsciencetheseyearstherearestillmanypeopleliveinpoorconditions.Theymadetheirlivesbycollectingandsellingusedthings.Theirchildrencannotgotoschoolwhiletheyhavenotenoughmoneytosendtheirchildrenthere.Whyyouthinksomanypeoplestillsufferfrompovertynow?Theanswerliesonthepopulationexplosion.ApresidentofadevelopingcountryoncesaidItisuswhoaretoblameforthepovertybecauseweusedtoproducechildwithoutlimit.Althoughthisfewwordssoundsimpleenoughtheyhaveclearpointedoutoneofthecausesofthepopulationexplosion.
8分WhenIwaslittleI'dseetonsofbatsflyingaroundstreetlightsatnightinmyneighborhoodinupstateNewYork.ButI'llneverforgetthefirsttimewhenIsawabatupclose.BythetimeIturned7thoughInoticedsomethingstrangeAllthebatsinmyneighborhoodhaddisappearedandIwonderedwhy.ThenthreeyearsagowhenIwas11andvisitingthestatefairIlearnedwhathadhappenedtomytown'sbats.Adiseasecalled'whitenosesyndrome'hadkilled93percentofNewYorkState'sbats.Iwashorrified.ThenIwrotealettertothehostofanenvironmentalprogramonthelocalradiostationaskingiftheycoulddoashowonbats.Theydid!ButIstillwantedtofindawaytoeducatepeoplefacetoface.IreachedouttoateacherIhadinelementaryschoolandaskedifIcouldmakeapresentationtoherclass.Idescribedhowbatshelpfarmersbyeatingcrop﹣damaginginsects.Itwentoversowellthatotherteachersstartedrequestingme.OverthepastthreeyearsI'vetalkedinfrontofeveryonefrom5﹣year﹣oldstoseniorcitizens!Manypeoplethinkthatbatsareblindandthattheyalwayscarrydiseasesbutnoneofthatistrue.ThemoreIpresentthemoreInoticethatIamchangingminds.Andwhilegettingpeopletorespectbatsisprettyhardgettingthemtorespectmehasbeendifficulttoo.WhenIfirstappliedtohostabooth摊位atalocalstreetfairthemanagersthoughtIwastooyoung.ButIrefusedtotake'no'forananswer.Icontinuedtomakemycaseandtheyfinallysaidyes!ThebestpartisIimpressedthemsomuch﹣100visitorsonmyfirstday﹣thattheynowinvitemebackeveryyear.1Allthebatsintheneighborhooddisappearedbecausethey.A.werekilledbyadiseaseB.movedtoanotherhabitatC.werehuntedbyotheranimalsD.hidinaplacewherepeoplecouldn'tfindthem2Theauthorwrotealettertothehostinordertoaskthemto.A.donatesomemoneytosavebatsB.makearadioprogramaboutbatsC.announcenewfindingsaboutbatsD.finishsomequestionnairesaboutthefair3Howdidtheauthorsavebats?A.Bybuildinganewhomeforthem.B.Byvolunteeringtoworkinthewild.C.Byimprovingtheirlivingenvironment.D.Byeducatingpeoplethattheyarebeneficial.4Whatdoestheunderlinedphrase'makemycase'inthelastparagraphmean?A.makeanimpressivepersuasion.B.lookintothematter.C.quarrelwiththemD.sticktothefacts.
如图在边长为4的正方形ABCD中先以点A为圆心AD的长为半径画弧再以AB边的中点为圆心AB长的一半为半径画弧则阴影部分面积是结果保留π．
8分ItwasreportedthataLondonreceptionistwassenthomefromworkafterrefusingtowearhighheels.TemporaryworkerNicolaThorp27fromHackneyarrivedatfinancecompanyPwCtobetoldshehadtowearshoeswitha2﹣inchto4﹣inchheel.Whensherefusedandcomplainedmalecolleagueswerenotaskedtodothesameshewassenthomewithoutpay. Ms.Thorpsaidshecouldnotbearwearinghighheelsforawholedayandwouldprefertowearhersmartflatshoes.ButinsteadshewastoldsheshouldgoandbuyapairofheelsonherfirstdaybackinDecember. Isaid‘ifyoucangivemeareasonastowhywearingflatswouldimpairmetodomyjobtodaythenfairenough'buttheycouldn'tMs.ThorptoldBBC. Iwasexpectedtodoanine﹣hourshiftonmyfeetguidingclientstomeetingroomsIsaid‘Ijustwouldn'tbeabletodothatinheels'.Ms.Thorpsaidsheaskedifamanwouldbeexpectedtodothesameshiftinheelsandwaslaughedat.ShethenspoketofriendsaboutwhathadhappenedandafterpostingitonFacebooksherealizedthatotherwomenhadfoundthemselvesinthesameposition. Shehassincesetupapetition请愿callingforthelawtobechangedsowomencannotbeforcedtowearhighheelstowork.Ithashadmorethan10000signaturessothegovernmentwillnowhavetorespond.Asthelawstandsemployerscandismissstaffwhofailtoliveuptoreasonabledresscodedemandsaslongasthey'vebeengivenenoughtimetobuytherightshoesandclothes.Theycansetupdifferentcodesformenandwomenaslongasthere'sanequivalentlevelofsmartness. 1WhathappenedtoNicolaThorponherfirstdaytowork? A.Sheboughtanewpairofhigh﹣heelshoes. B.Shewasfiredforrefusingtowearshoesrequired. C.Shewasfinallyallowedtowearflatshoesatwork. D.Shewasexhaustedafteralongdayswork. 2WhichwordwouldMs.Thorpusetodescribethedresscode? A.Unavoidable B.Understandable C.Necessary D.Unreasonable 3Accordingtothelastparagraph. A.thegovernmentwillmakesomeresponsetotheissue B.thepetitionhasnotcaughtmuchattentionsofar C.itisillegaltosetupthesamecodesformenandwomen D.employershavetherighttofirethosewhoarenotsmart 4Whatcanweinferfromthetext? A.TheshoeproblemonlyhappensinPwC B.Thecompanywillgiveintopublicpressure. C.Thereissexualdiscriminationontheissue. D.NicolaThorpwouldgobacktoworksoon.
如图Rt△ABC中∠C＝90°BC＝8cmAC＝6cm．点P从B出发沿BA向A运动速度为每秒1cm点E是点B以P为对称中心的对称点点P运动的同时点Q从A出发沿AC向C运动速度为每秒2cm当点Q到达顶点C时PQ同时停止运动设PQ两点运动时间为t秒． 1当t为何值时PQ∥BC 2设四边形PQCB的面积为y求y关于t的函数关系式 3四边形PQCB面积能否是△ABC面积的若能求出此时t的值若不能请说明理由 4当t为何值时△AEQ为等腰三角形直接写出结果
计算﹣2sin45°﹣1+0+2﹣1．
如图已知一次函数y＝﹣2x+3与反比例函数的图象相交于A﹣1mBn﹣2两点． 1求反比例函数解析式及mn的值 2求△AOB的面积 3观察图象直接写出反比例函数值大于一次函数值时自变量x的取值范围．
10分Althoughproblemsareapartofourlivesitcertainlydoesn'tmeanthatweletthemruleourlivesforever.Onedayortheotheryou'llhavetostandupandsay﹣problemIdon'twantyouinmylife. 1Problemswithfriendsparentsgirlfriendshusbandsandchildren﹣thelistgoeson.Apartfromthesetheinnerconflictswithinourselvesworktoo.Thesekeepaddingtoourproblems.Problemscomeindifferentshapesandcolorsandfeelings. Butgoodnewsisthatallproblemscanbedealtwith.Nowreadontoknowhowtosolveyourproblems. Talkitreallyhelps.Whatmostofusthinkisthatourproblemcanbeunderstoodonlybyusandthatnotalkingisgoingtohelp.2Talkinghelpsyoumoveonandletgo. Writeyourproblems.3Whenyouwritedownyourproblemsyouaresettingfreeallthetensionfromyoursystem.Youcantrythrowingawaythepaperonwhichyouwroteyourproblems.Bydoingthisimagineyourselfthrowingawaytheproblemsfromyourlife. Don'tlosefaithandhope.Nomatterwhatyouloseinlifedon'tlosefaithandhope.Evenifyouloseallyourmoneyjobs…youshouldstillhavefaith.4 Yourproblemsaren'ttheworst.Nomatterwhatproblemyougetinlifethere'reanotheronemillionpeoplewhoseproblemsarehugerthanyours.5Yourproblemsmightjustseembigandworsebutinrealitytheycanberemoved. Goaboutandsolveyourproblemsbecauseeveryproblemhoweverbigorsmallalwayshasawayout. A.Butthetruthisthatwhenyoutalkaboutityou'resettingfreethenegativeenergiesthathavebeengatheringwithinyou. B.Whenwehaveaproblemapressingcriticalurgentlife﹣threateningproblemhowdowetryandsolveit? C.Tellyourselfwhentheycandealwiththeirproblemswhycan'tI? D.Ofcoursewe'vebeenfightingproblemseversincewewereborn. E.Wecanoftenovercometheproblemandachievethegoalbymakingadirectattack. F.Havingapersonaldiarycanalsobeofhugehelpifyoudon'twantarealpersontotalkwith. G.Withfaithandhopeyoucanrebuildeverythingthatyoulose.
10分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. 删除言把多余的词用斜线\划搏. 修改在错的词下画～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. DearJack Iamgladtoknowthatyouaregoingtotakepartinimportantdebatecontestonbehalfofyourschool.Itwasreallyagoodopportunity.Sobelieve﹣inyourselfandconcentrateyoureffortsonprepareforit. Itisquitenaturallytobeanxiousaboutthecontestbuttoomanyanxietydoesnogoodtoyou.Meanwhileyoushouldtrytotakemeasuretodealwithyouranxiety.Firstofalladoptapositiveattitudetoanxiety.Beinganxiousisanormalresponsetobigchallenges.Rememberitthatthemostimportantthingisnottowinandtoparticipate.Thentrytorelaxmyselfbytakingsomeexerciseorlisteningmusic.Ireallyhopeyouwillhaveawonderfulperformanceinthecontest. Yours LiHua
8分Instagramisafastbeautifulandfunwaytoshareyourlifewithfriendsandfamily.TakeapictureorvideochooseafiltertotransformitslookandfeelandthenposttoInstagram﹣it'sthateasy.YoucanevensharetoFacebook.Twitterandmore.It'sanewwaytoseetheworld.SomanyphotosoffoodarecontainedonInstagram﹣nowapop﹣updinerinLondonistakingadvantageofthisnewtrendbylettingpeoplesettlethebillfortheirmealssimplybyuploadingphotosoftheirdishestosocialnetworks. Ialwaysthoughtpeople'stakingpicturesoftheirfoodwaskindofsillybutatthisnewpop﹣uprestaurantintheUKI'dprobablydoittoo.ThePictureHouseistheworld'sfirstpay﹣by﹣photorestaurant﹣youorderclickaphotoofthefoodshareonInstagramandeatforfree! TherestaurantbelongstofrozenfoodgiantBirdsEyewhocameupwiththeideatocashinonpeople'saddictionwithphotographingfoodandsharingthepicturesonline.TheyconductedasurveyandfoundoutthatmorethanhalfoftheBritishpopulationregularlytookpicturesoftheirmeals.Sotheyrealizeditwasabetterwaytoadvertisetheirnewdiningrange. Thepop﹣updinerwasopeninSohoLondonforthreedaysinMayandisnowmovingtoothermajorUKcities.Theyservetwo﹣coursemealsthatcustomersdon'thavetopayforiftheyphotoandlnstagramit. TherestaurantisapartofBirdsEye'sFoodforLifecampaignanewmarketingprojectthataimsatchangingthewaypeoplelookatfrozenfood.Takingphotosoffoodenablespeopletoshowoffandtosharetheirmealtimemoments﹣fromtheeverydaytothespecialsaidmarketingdirectorMargaretJobling. ThereactiontoThePictureHousehasbeengreatsofarAndthepay﹣by﹣pictureconcepthasproventobeaneffectiveway.Alternativepaymentmethodsareactuallygainingpopularityamongalotofbusinesses.LastyearinacafeinGermanycustomerspaybyhowmuchtimetheyspendtherenotbywhattheyeat. 1Instagramprobablyis. A.arestaurantfreeofcharge B.acampaignofFoodforLife'' C.aprogramusedtosharephotos D.anewmarketingproject 2What'stheauthor'sattitudetothisnewtrend? A.Confused B.Unconcerned C.Opposed D.Interested 3ThePictureHouseencouragessharingphotosofitsfoodto. A.raisethepriceoffrozenfood B.attractmorecustomers C.createanewsocialmediatrend D.rewardtheregularcustomers 4Whichofthefollowingcanserveasthebesttitleforthepassage? A.PaybyPicture B.ThePop﹣upDiner C.NoNeedtoPay D.FoodforLife
新学期开学初__同学对部分同学暑假在家做家务的时间进行了抽样调查时间取整数小时所得数据统计如下表 时间分组 0.5～20.5 20.5～40.5 40.5～60.5 60.5～80.5 80.5～100.5 频数 20 25 30 15 10 1__同学抽取样本的容量是多少 2请你根据表中数据补全图中的频数分布直方图 3若该学校有学生1260人那么大约有多少学生在暑假做家务的时间在40.5～100.5小时之间
一元二次方程x2﹣2x+3＝0的根的情况是
10分Beforeapplyingforcollegesmanystudentswonderwhat'sthepointofitall?1Collegeisahugeinvestmentnotonlyofmoneybutalsoofmanyyearsofyourlife.Nooneshouldattendcollegewithoutaverygoodreason. Somepeoplegotocollegetoearnmoremoney.OnaveragepeoplewhoobtainaBachelor'sdegreewillearn1milliondollarsoverthecourseoftheirlifetimemorethanpeoplewhodon'tattendcollege.2Holdersofthesedegreesaresuitedtomanyhighpayingjobswhilethosewithoutdegreesarenot. Somegofortheexperiences.3Studentsnotonlyreceiveatraditionalclassroomeducationbutalsolearnalargeamountaboutthewaysoftheworld.Formanystudentscollegeisthefirsttimetheyliveawayfromhome.Thiscreatesagreatopportunitytomeetdifferenttypesofpeopleandhavemanybrandnewexperiencesthatmakeyouamuchwiserandworldlyperson. 4Formanypeoplecollegeisagreatwaytostartthenextsteptowardsachievingadream.Itcanhelpyoubreakintoanewcareerpathorachieveexpertstatusinyourchosenfield. HowevertherearealsosomepeoplegoingtocollegebecausemyparentsandfamilyexpectmetoorIdon'tknowwhatIwanttodowithmylife.5Ifyougowithoutatruepurposeyoucanendupfindingwhatyouspendonitmightneverbeworthit. A.Someothersseekafteradream. B.Collegelifeisverymeaningfulforeveryone. C.Thisisanimportantquestiontoaskyourself. D.Collegeisanamazinglifeexperience. E.Collegestudentswillbeofferedalargerewardfortheirhardworkatcollege. F.ThosewhohaveMaster'sDoctor'sandprofessionaldegreesdoevenbetter. G.Ifyourreasonforgoingtocollegeisoneoftheseyoushouldreconsideryourmotivationsseriously.
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