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国家学生体质健康测试专家组到某学校进行测试抽查，在高三年级随机抽取100名男生参加实心球投掷测试，测得实心球投掷距离（均在5至15米之内）的频数分布表如下（单位：米）： 以各组数据的中间值代表这...
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高三下学期数学《》真题及答案
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某校为了了解高三年级学生的身体状况现用分层抽样的方法从全年级600名学生中抽取60名进行体检如果在抽
为了解甲乙两校高三年级学生某次期末联考地理成绩情况从这两学校中分别随机抽取30名高三年级的地理成绩百
16.将下面的材料概括成一句话新闻不超过25字4分本报北京12月24日电今天从全国推进学校体育工作电
某中学高一至高三年级的学生参加某项社区服务如果高三年级与高一年级高三年级与高二年级参加此项活动的人数
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某高中三个年级共有3000名学生现采用分层抽样的方法从高一高二高三年级的全体学生中抽取一个容量为3
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某中学高一至高三年级的学生参加某项社区服务如果高三年级与高一年级高三年级与高二年级参加此活动的人数之
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某校高一高二高三年级学生人数分别是400320280.采用分层抽样的方法抽取50人参加学校举行的社会
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某中学高一至高三年级的学生参加某项社区服务如果高三年级与高一年级高三年级与高二年级参加此活动的人数之
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学校为了了解初三年级学生体育跳绳的训练情况从初三年级各班随机抽取了50名学生进行了60秒跳绳的测试并
学校为了了解初三年级学生体育跳绳的训练情况从初三年级各班随机抽取了50名学生进行了60秒跳绳的测试并
某市各级各类中小学每年都要进行学生体质健康测试测试总成绩满分为 100 分规定测试成绩在 85 1
某校高一高二高三年级的学生人数之比为10:8:7按分层抽样从中抽取200名学生作为样本若每人被抽到的
对所有的测试方法与评分标准的细则进行了说明和解释的文件是
《学生体质健康标准（试行方案）实施办法》
《学生体质健康标准（试行方案）》
《学校体育工作条例》
《国家学生体质健康标准实施办法》
我区将对某校初一年级学生体质健康测试成绩进行抽查检查组到校后随机从整个年级中抽取一个班进行测试若该
某高中学校三个年级共有学生3000人其中一二三年级的人数比为2:3:1用分层抽样的方法从中抽取一个容
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某校有3300名学生其中高一高二高三年级学生人数比例为12:10:11现用分层抽样的方法随机抽取66
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Althoughtheideaofzeroemissionnetcarbon﹣positivesustainable可持续developmentwaspromotedworldwidemostcitiesareatalosswhattodoorevensomehaveobjectedtoit.ButinLiuzhouacityinsouthernChinaattitudescouldnotbemoredifferent. TheLiuzhouMunicipalityUrbanPlanningBureauhassignedupItalianarchitectStefanoBoerithefatheroftheforestcitymovementtobuildaself﹣containedcommunityforupto30000people.Heisthego﹣tomanforsuchprojectsthankstothesuccessofhisverticalforeststworesidential住宅的towers.Completedin2014theyremoveupto17.5tonsofsoot煤烟fromtheaireachyearandayearlateroneofthemwasnamedBestTallBuildingWorldwide. TheLiuzhouprojectisamuchmoreambitiousundertakinghowever.Itshomeshospitalshotelsschoolsandofficeswillbebuiltona340﹣acresiteinwhatBoericallsthefirstattempttocreateanurbanenvironmentthatisreallytryingtofindabalancewithnature.Its100speciesofplantlifeareexpectedtoabsorbalmost10000tonsofcarbondioxideand57tonsofpollutantsperyearwhileatthesametimeproducing900tonsoflife﹣givingoxygen. Althoughthearchitectshaven'tpublishedthecostoftheforestcitytheMilantowerscostonlyfivepercentmorethantraditionalskyscrapers. TheconstructionofhisforestcityatLiuzhouissettobeginin2020andthereisstillagreatdealofplanningandresearchrequiredbeforeaprojectedcompletiondatecanbeset.HoweverBoeriremainsoptimisticabouttheprojectandhasconfidenceinthesoundnessofhisvisionIreallythinkthatbringingforestsintothecityisawaytodealwithglobalwarming. 1What'sLiuzhou'sattitudetowardsthesustainabledevelopment? A.Approving. B.Cautious. C.Unfavorable. D.Doubtful. 2WhyisStefanoemployedfortheLiuZhouproject? A.Hevolunteeredtodotheproject. B.Heisafamousarchitectintheworld. C.Heisthefatheroftheforestrecovery. D.Hehasgainedexperienceinsimilarprojects. 3Whatdoestheunderlinedwordtheyreferto? A.Thearchitects. B.Thetwotowers. C.Forestsinthecity. D.Theresidentsofthecity. 4What'sthepurposeofLiuZhouproject? A.Toprovidemorejobs. B.Tobringforestintocity. C.Tosolvehouseshortage. D.Toimprovetheenvironment.
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LastweekVodafonestartedatestoftheUK'sfirstfull5GserviceavailableforusebybusinessesinSalford.ItispartofitsplantotrialthetechnologyinsevenUKcities.Butwhatcanweexpectfromthenextgenerationofmobiletechnology? Onethingwewillseeinthepreparationforthetestislotsoftrickswiththenewtech.Earlierthisyearoperatorspaidalmost£1.4billionforthe5Gwavelengthsandtocompensateforthatcashtheywillneedtocatchtheeyeofconsumers.InSeptemberVodafoneuseditsbitoftherangetodisplaytheUK'sfirsthologram全息call.TheManchesterCitycaptainStephHoughtonappearedasaholograminNewbury.Itisn'tallhologramshowever5Gwillofferfasterinternetaccess.withOfcom英国通讯管理局suggestingthatvideothattakesaminutetodownloadon4Gwillbeavailableinjustasecond. Thewiderapplicationistosupportconnectedequipmentontheinternetofthings﹣notjusttheinternet﹣enabledfridgethatcanreorderyourmilkforyoubutthenetworkthatwillenabledriverlesscarsanddeliverydrones无人机tocommunicatewitheachother. ProfWilliamWebbhaswarnedthatthetechnologycouldbeacaseoftheemperor'snewclothes.Muchofthespeedincreaseheclaimscouldhavebeenachievedbyputtingmoremoneyinthe4Gnetworkratherthananewtechnology.OtherdifferentvoiceshavesuggestedthatafocusonrollingoutwiderruralbroadbandaccessandaddressingcurrentnetworkcoveragewouldbemorebeneficialtotheUKasawhole. Obviously5Gwillalsobringacosttoconsumers.Itrequiresahandsetforboth5Gand4Gandthefirst5G﹣enabledsmartphonesareexpectedinthecomingyear.Withtheslowpaceofnetworkrolloutsofaritislikelythatconsumerswillendupupgradingtoanew5Gphonewellbefore5Gbecomeswidelyavailableinthenextcoupleofyears. 1WhydoesProfWilliamWebbsaythetechnologycouldbeacaseoftheemperor'snewclothes? A.Heisinfavoroftheapplicationofthenewtechnology. B.5Gwillbringacosttoconsumersintheirdailylife. C.5Ghelpspeoplecommunicatebetterwitheachother. D.Heprefersmoremoneytobespenton4Gnetworks. 2Theunderlinedwordaddressinginthefourthparagraphhastheclosestmeaningto. A.makingaspeechto B.tryingtosolve C.managingtodecrease D.respondingto 3Thelastparagraphindicatesthat. A.it'lltakeseveralyearstomake5GaccessibletothepublicintheUK B.5Gserviceshowshugedevelopmentpotentialandabroadmarket C.customersareeagertouse5Gsmartphonesinsteadof4Gones D.it'sprobablethat5GnetworkrolloutisspeedingupinBritain 4Whatdoweknowaboutthetext? A.Vodafoneissuccessfulinspreadingthe5Gservice. B.StephHoughtonappearedasahologramby4G. C.Theapplicationof5Gwillmakelifemucheasier. D.5GphonesareavailableinruralareasoftheUK.
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September222018willbeWorldCar﹣FreeDayadayonwhichpeopleacrosstheglobeareencouragedtofind1methodstomeettheirtransportationneedsandre﹣discoverbusesbikesandtheirown2. Onthisdaypeoplegettogetherinthestreetsintersectionsandneighborhoodblocksto3theworldthatwedon'thavetoacceptourcar﹣controlledsociety. While4alongtheselineshadtakenplacefromtimetotimestarting5the1973oilcrisisitwasonlyinOctober19946astructuredcallforsuchprojectswas7inakeynotespeechbyEricBrittonattheInternationalAccessibleCitiesConferenceheldinToledoSpain. ThefirstnationalcampaignwaslaunchedinBritainin1997andtheFrenchfollowedsuitin1998.In2000carBustersissuedanopen8foraWorldCar﹣FreeDayto9withEurope'sCar﹣FreeDayonSeptember22.10thenwehavebeguntocallforcitizenstoorganize11onornearthisday. Howeverwedonotwant12onedayofcelebrationsandthenreturnto13life.WorldCar﹣FreeDayisthe14timetoremindcityplannersandpoliticiansto15cyclingwalkingandpublictransport.Itisuptouscitiesandgovernmentstohelp16permanentchangesto17pedestrianscyclistsandotherpeoplewhodonotdrivecars. While18accomplishmenthasbeenachievedintermsofmediacoveragetheseevents19tobedifficulttoachieverealsuccessandevenadecadelaterthereisconsiderableuncertaintyabouttheusefulnessofthisapproach.Broadpublicsupportand20tochangeisneededforsuccessfulimplementation执行. 1A.effective B.efficient C.useful D.alternative 2A.legs B.motors C.subway D.feet 3A.recall B.remind C.realize D.recommend 4A.projects B.events C.activities D.meetings 5A.as B.on C.with D.beyond 6A.when B.that C.where D.how 7A.undertaken B.submitted C.developed D.issued 8A.answer B.call C.wish D.longing 9A.connect B.involve C.consist D.concern 10A.Since B.Before C.After D.Right 11A.events B.affairs C.incidents D.accidents 12A.even B.still C.just D.ever 13A.usual B.previous C.ordinary D.average 14A.perfect B.limited C.accurate D.correct 15A.givewayto B.givepriorityto C.giveriseto D.giveinto 16A.employ B.decrease C.create D.increase 17A.assist B.benefit C.instruct D.influence 18A.constant B.similar C.envying D.considerable 19A.turnout B.workout C.carryout D.figureout 20A.approach B.attitude C.chance D.commitment
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