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如图,在等腰△ABC中,AB=AC=4cm,∠B=30°,点P从点B出发,以cm/s的速度沿BC方向运动到点C停止,同时点Q从点B出发以2cm/s的速度沿B→A→C运动到点C停止.若△BPQ的面积为...
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如图等腰△ABC中AB=ACBD为腰AC的中线将△ABC分成长12cm和9cm的两段则等腰△ABC的
如图在△ABC中AC=BC∠C.=90°AD是△ABC的角平分线DE⊥AB垂足为E.1已知CD=4c
如图7Rt△ABC中∠ACB=90°AC=4cmAB=5cm点D.是AB的中点则cos∠ACD=.
如图在△ABC中AB=4cmBC=2cm∠ABC=30°把△ABC以点B为中心按逆时针方向旋转使点C
在等腰三角形ABC中AB=AC其周长为20cm则边AB的取值范围是.
1cm
5cm
4cm
4cm
如图△ABC中D.E.分别是ABAC的中点若BC=4cm则DE=cm.
如图在△ABC中AB=AC∠C=30°AB⊥ADAD=4cm求BC的长.
8cm,
12cm,
15cm,
16cm,
如图△ABC中AB=6cmAC=5cmBC=4cm∠ABC与∠ACB的平分线相交于点O.过点O.作D
如图等腰△ABC中AB=ACBD为腰AC的中线将△ABC分成长12cm和9cm的两段则等腰△ABC的
如图ΔABC与ΔADB中∠ABC=∠ADB=90°∠C.=∠ABDAC=5cmAB=4cm求AD的长
如图所示在四边形ABCD中AC⊥DC△ADC的面积为30cm2DC=12cmAB=3cmBC=4cm
在等腰△ABC中AB=AC其周长为20cm则AB边的取值范围是
1cm<AB<4cm
5cm<AB<10cm
4cm<AB<8cm
4cm<AB<10cm
如图在Rt△ABC中CD⊥AB∠
=30°,BD=4cm,则AB=( ) A.1cm
2cm
8cm
16cm
等腰△ABC的腰AB=AC=4cm若以
的圆心,2cm为半径的圆与BC相切,∠BAC的度数为( ) A.30°
60°
90°
120°
如图所示在△ABC中AB=AC∠C=30°AB⊥ADAD=4cm求BC的长.
如图所示在△ABC中AB=AC∠C=30°AB⊥ADAD=4cm求BC的长
在△ABC中AB=AC=4cmBD为AC边上的高∠ABD=30°则∠BAC的度数为.
如图在Rt△ABC中CD⊥AB∠
=30°,BD=4cm,则AB=( ) A.1cm
2cm
8cm
16cm
如图在等腰三角形ABC中AB=AC=12cm∠ABC=30°底边上的高AD=_______cm.
如图在△ABC中∠ACB=90°BE平分∠ABCDE⊥AB于点D.如果AC=3cm那么AE+DE等于
2cm
3cm
4cm
5cm
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某科研小组为探究干旱对大针茅草的影响进行了相关实验结果如表所示.回答下列问题 1与对照组相比在干旱条件下大针茅草的光合速率填“升高”“降低”或“不变”原因是. 2实验结果表明干旱时大针茅草通过提高缓解干旱对它的伤害增强抗旱能力但是严重干旱时细胞内水分亏缺会导致叶绿体超微结构破坏类囊体薄膜上的减少进而影响光反应. 3有研究表明钙CaCl2与脱落酸ABA都能够提高大针茅草抗旱能力并且混合使用效果更佳请简要写出证明该观点的实验设计思路.
人体内环境稳态是机体进行正常生命活动的必要条件.神经﹣体液﹣免疫调节网络是机体维持稳态的主要调节机制.下列相关的叙述中正确的有几项 ①细胞内液血浆组织液和淋巴共同构成了机体内细胞生活的直接环境 ②神经调节的基本活动方式是反射完成反射的结构基础是神经元兴奋一般是从一个神经元的轴突传至另一神经元的树突或胞体 ③激素是通过体液的传输作用于靶细胞或靶器官的信息分子 ④血糖的平衡调节是通过体液调节完成的 ⑤恒温动物维持体温的恒定是通过神经调节完成了体内产热量和散热量平衡的过程 ⑥体液免疫过程中有吞噬细胞参与的阶段有两次.
从abc中任取两个字母排成一列则不同的排列种数为
假如你是高二学生李华你的英国好友John邀请你这个暑假去伦敦旅游但你暑假有学习计划不能前往请你写一封信.要点如下 1.表达遗憾 2.说明理由 3.希望有机会再去. 注意1.可以适当补充细节以使行文连贯 2.词数80左右.
红细胞生成素EPO是体内促进红细胞生成的一种糖蛋白可用于治疗肾衰性贫血等疾病其制备过程如图所示 回答下列问题 1科研人员可以在基因文库中获得含人EPO基因的DNA片段理论上基因组文库含有的基因数量多于cDNA文库中的其原因是. 2步骤①中利用PCR技术扩增EPO基因时首先根据设计出两种引物.为便于后续的剪切和连接应在两种引物的一端分别加上和序列. 3将EPO基因导入到CHO之前要构建基因表达载体的目的是同时使目的基因能够表达并发挥作用. 4科研人员提取了经步骤③获得的重组CHO中的RNA后先通过获得DNA再进行PCR扩增最终未能检测出EPO基因其原因可能是至少答出两点. 5培养重组CHO时要定期更换培养液其目的是.
12345中任取2个不同的数事件A=“取到的2个数之和为偶数”事件B=“取到的2个数均为偶数”则PB|A等于.
下列有关生物膜的叙述正确的是
甲乙两人参加一次英语口语考试已知在备选的10道试题中.甲能答对其中的6道乙能答对其中的8道規定每次考试都从备选题中随机抽出3道题进行测试至少答对2道题才算合格则甲乙两人至少有一人考试合格的概率为
研究发现细胞中活化的蛋白质Bak可通过改变线粒体外膜的通透性使线粒体内外膜之面的细胞色素C等小分子物质释放进而激活细胞凋亡信号促使细胞凋亡同时发现在血液肿瘤细胞中通过使用抗癌药物蛋白质Bak活化率可以高达80%.下列描述错误的是
在5件产品中有3件一等品和2件二等品从中任取2件那么以为概率的事件是
已知随机变量X+Y=8若X~B100.6则EYDY分别是
图甲表示小球藻的某生理过程科学家向小球藻培养液中通入放射性14CO2.在不同条件下连续测量小球藻细胞中14C标记的图甲中三种化合物的相对量其变化曲线如图乙所示.请据图回答下列问题. 1图甲所示生理过程发生在中若要使该过程持续稳定地进行必须由光反应持续提供和. 2图乙曲线abc分别表示图甲中化合物和相对量的变化. 3参照图甲分析出现图乙a曲线的原因是条件下小球藻吸收培养液中14CO2并逐渐合成使其上升突然停止该条件的处理光合作用的反应减弱不能继续被还原14CO2继续被固定使其再次上升.
T细胞主要包括抑制性T细胞Ts辅助性T细胞Th和胞毒性T细胞Tc.Tc能杀伤被病毒感染的细胞Th能通过分泌淋巴因子促进B细胞分化并提高Tc的杀伤力Ts能抑制Th的活性.下列分析错误的是
PM2.5是指悬浮在空气中的空气动力学当量直径小于或等于2.5微米的颗粒物也称为可入肺颗粒物根据现行国家标准GB3095﹣2012PM2.5日均值在35微克/立方米以下空气质量为一级在35微克/立方米~75毫克/立方米之间空气质量为二级在75微克/立方米以上空气质量为超标.从某自然保护区2012年全年每天的PM2.5监测值数据中随机地抽取10天的数据作为样本监测值频数如表所示 1从这10天的PM2.5日均值监测数据中随机抽取3天求恰有1天空气质量达到一级的概率 2从这10天的数据中任取3天数据记ξ表示抽到PM2.5监测数据超标的天数求ξ的分布列 3以这10天的PM2.5日均值来估计一年的空气质量状况则一年按366天算中平均有多少天的空气质量达到一级或二级.精确到整数
OnMarch252010KateandDavidOggheardthewordseveryparentdreadsTheirnewbornwasn'tgoingtomakeit.Theirtwins﹣﹣agirlandaboy﹣﹣wereborn14weeksprematureweighingjustovertwopoundseach.Doctorshadtriedtosavetheboyfor20minutesbutsawnoimprovement.Hisheartbeatwasnearlygoneandhe'dstoppedbreathing.Thebabyhadjustmomentstolive. IsawhimgaspbutthedoctorsaiditwasnouseKatesaid.Iknowitsoundsstupidbutifhewasstillgaspingthatwasasignoflife.Iwasn'tgoingtogiveupeasily. Stillthecoupleknewthiswaslikelygoodbye.InanefforttocherishherlastminuteswiththetinyboyKateaskedtoholdhim. IwantedtomeethimandforhimtoknowusKatesaid.We'dresignedourselvestothefactthatweweregoingtolosehimandwewerejusttryingtomakethemostofthoselastpreciousmoments. KateunwrappedtheboywhomthecouplehadalreadynamedJamiefromhishospitalblanketandorderedDavidtotakehisshirtoffandjointheminbed.Thefirst﹣timeparentswantedtheirsontobeaswarmaspossibleandhopedtheskin﹣to﹣skincontactwouldimprovehiscondition.Theyalsotalkedtohim. WeweretryingtohavehimKatesaid.Weexplainedhisnameandthathehadatwinandhowhardwehadtriedtohavehim. Thensomethingmiraculoushappened.Jamiegaspedagain﹣﹣andthenhestartedbreathing.Finallyhereachedforhisfather'sfinger.Thecouple'slostboyhadmadeit. EightyearslaterJamieandhissisterEmilyarehappyandhealthy. 1FromwhatcanwetellthatJamiewasstillalive? A.Hisheartbeat. B.Hispulse. C.Hisgasp. D.Hisunderweight. 2Whydidtheparentsliewiththebabyboyinonebed? A.Thefamilywantedtostaytogetherandkeepwarm. B.Thefamilywantedtohavetheirprivatespace. C.Theparentsweresotiredandwantedtorest. D.TheparentswantedtospendthelastminuteswithJamie. 3Whatcanbethebesttitleforthepassage? A.PrematureTwins B.Life﹣givingTouch C.First﹣timeParents D.LastPreciousMoments
从5名男生和4名女生中选出3名学生参加一项活动要求至少一名女生参加不同的选法种数是
某地经过开垦后荒山变为果林洼地成为鱼塘加快了地方经济的发展和人民脱贫致富奔小康的步伐.回答下列问题 1山顶和山脚种植了不同的果木这体现了群落的结构. 2调查该果林的能量流动过程发现上一营养级同化的能量不能100%的流入下一营养级原因是. 3若鱼塘的环境条件不变经过捕捞后某种鱼的环境容纳量会填“变大”或“变小”或“不变”原因是. 4鱼塘生态系统需要人工不断地添加饲料以维持其正常功能从能量流动和物质循环的角度说明其原因是.
DuringmymiddleschoolyearsIwasveryallergictoEnglishgrammar.1thetwoincidentsI2laterchangedmyviewaboutlearningEnglish.3IthinkitisreallyfuntolearnEnglishgrammar.ItoccurredwhileIwas4inthemysteriousworldofiPhone.MyEnglishteacherwrotetwosentencesonthe51Thekingwouldwearnoclotheswhichmakehimappeardifferentlyfromothers.2Thekingwouldwearnoclotheswhichmakehimappeardifferentlyfromothers.Glancingatthetwo6Ithoughttheteachermusthavemadeamistake7thesetwosentenceswerethesame.Suddenlytheclassburstintoaloudlaughter.OnlythendidI8thataddingacommacouldshowabigdifferencein9.Afterwardsomething10happenedtome11.AtthebeginningofmyEnglishclassonedaytheteacher12ourhomeworkassignment.Tomy13myteacherhad14out﹣lyinthesentence‘IstudiedEnglishhardly'.'Isn't‘hardly'anadverb?'Iaskedmyself.LaterofcourseI15whatwaswrong.Iwasassumingeveryadjectiveaddedwith﹣lystill16themeaningofthatadjective.NottillthendidIfindoutthat‘hardly'17meant‘almostnot'sowhatIhad18madeaworldofdifferencefromwhatIwantedtosay.InconclusionwhatIexperiencedenablesmeto19Englishistrulyamysteriousworldofart.What20itistolearnEnglishgrammar!1A.However B.Besides C.Therefore D.Instead2A.witnessed B.heard C.experienced D.described3A.Then B.Soon C.Now D.Later4A.shocked B.absorbed C.rooted D.trapped5A.phone B.door C.window D.blackboard6A.sentences B.words C.phrases D.questions7A.whether B.because C.when D.if8A.ask B.wish C.realize D.hope9A.life B.form C.time D.meaning10A.interesting B.exciting C.strange D.awkward11A.before B.together C.yet D.again12A.checked B.returned C.found D.finished13A.disappointment B.joy C.surprise D.relief14A.handed B.worked C.carried D.crossed15A.figuredout B.gaveaway C.searchedfor D.talkedabout16A.creates B.hides C.explains D.keeps17A.finally B.gradually C.actually D.frequently18A.written B.known C.said D.seen19A.expect B.understand C.respond D.introduce20A.trouble B.fun C.difference D.magic
已知5x﹣n. Ⅰ当n=6时求 ①展开式中的中间一项 ②展开式中常数项的值. Ⅱ若展开式中各项系数之和比各二项式系数之和大于240求展开式中含x项的系数.
在基因型为AaXBXbAaXBY的果蝇产生正常配子过程中下列叙述错误的是
ItwasaFridaynightandIwas1arestaurantwashingdishes.Aplate2throughmywetfingersandfellontothefloorin3.Myfaceflushed发红andinsideIwasscreaming'Whyme!?'asifmy4wouldmaketheplatewholeagain.Thebrokenplatewasonlyoneofthemany5fightinginsideme.Therewereadozen6smallerbuturgentconcerns.Formeitwasimpossibletogetsomemuch7restorsomestudytimebeforeacomingexam.Ihadto8withthefamilyexpenses开销.SoIgotbacktowork.Itwas12a.m.whenIfinallyfinishedmywork.Igotonthe9homeandtookoutmynotestostudy.Igotthe10looksfrompeopleoutofbarsbecauseIwasstudyingonabusinthemiddleofthenight.Their11didn'tbothermeatall.Iknewsomethinghadtochangeinmyfamilyandit12tometobeginit.FortunatelyIalsoknewIhaddesireand13inmyblood.MygrandfatherwasamongthefirstMexicanimmigrantswho14inL.A..BothofmyparentsleftMexicointheirearlyteenageyearsandbeganworkinglong15asacookandamaid.Thespiritwas16generationswhichhelpedmebothinschoolandatwork.AsIwalkedthroughthefrontdoorathomeIsawmymotherhadfallenasleep17medespiteherownlongday.Inmybedroomwatchingmybrothersbreatheslowlymademefeelmybody'stiredness.HoweveritwouldbeawhilebeforeIcould18theminsleep.Ihadanessay19earlythenextmorningandMs.DePaolodoesn't20latework.1A.inthemiddleof B.inthefrontof C.inthecornerof D.inthebackof2A.slipped B.flew C.jumped D.slowed3A.slices B.pieces C.blocks D.sheets4A.scream B.cry C.voice D.shout5A.tasks B.difficulties C.worries D.matters6A.another B.others C.other D.some7A.excited B.attracted C.delayed D.needed8A.increase B.workout C.cutdown D.helpout9A.taxi B.bus C.subway D.train10A.strange B.casual C.friendly D.formal11A.observation B.stares C.laughter D.ignorance12A.felt B.jumped C.threw D.fell13A.promise B.wish C.courage D.ability14A.settled B.moved C.lived D.worked15A.years B.days C.hours D.minutes16A.handedin B.passeddown C.passedaway D.turnedto17A.waitingfor B.watchingon C.callingup D.searchingfor18A.take B.join C.hold D.keep19A.ready B.written C.due D.finished20A.receive B.check C.accept D.assess
某种产脂肪酶菌常被用作饲料添加剂如表是从土壤中初筛该菌的培养基配方请回答下列问题 1在上述培养基中榄油能为产脂肪酶菌提供.为增大产脂肪酶菌的浓度需用该培养基进行富集培养富集培养基宜选用液体培养基的原因是. 2用涂布平板法分离产脂肪酶菌时在上述培养基的基础上还应加入和溴甲酚紫碱性条件下呈紫色在酸性条件下为黄色.在平板上产脂肪酶菌菌落的周围会出现黄色圈原理是.筛选时常选择菌落大黄色圈直径大的菌落这说明此菌落. 3菌落是指由一个细胞繁殖而来的肉眼可见的子细胞群体.在平板上有的菌落较小呈乳白色表面光滑无丝状物这些菌落可能为填“细菌”或“霉菌”.有的菌落连成一片形成原因最可能是. 4研究发现在饲料中添加产脂肪酶菌剂后动物的体重明显增加这说明.
Inmostartmuseumsthepaintingsonthewalljustlookflatbutsometimesvisitorscomeacrossanimagethatappearstobethree﹣dimensional.Theartisthascleverlyusedcolorslinesandshadingtogivethepaintingsomedepthmakingitmorerealistic.Theartistictechniqueofcreatingthree﹣dimensionalimagesofsomethingonaflatsurfaceiscalledtrompeI'oeil.TodaysomeartistsareadaptingtheideaoftrompeI'oeiltomakethingsbecomeinvisiblewhichiscalledcamouflageart. Innatureusingcamouflagenotonlyallowsinsectsandanimalstohidefromtheirnaturalenemiesbutalsoallowsthemtogetcloseenoughtosurpriseotherinsectsorsmalleranimalsthattheywanttocatchandeat.Artistsarenothidingorpreparingtoattack.Insteadtheyareusingtheideaofcamouflagetomakeurbanspaceslooknicerortomakestatementswiththeirart. Itisnotdifficulttofindthingsthatwewouldliketomakedisappearsuchasthedullwallofalargeindustrialbuildingorthepolescarryingelectricitywires.Artistscanmakethesethingsmoreinterestingandinsomecaseslessvisible.Inmanyurbanareaslargebuildingshavebeenpaintedwithamazingpicturesthattrickoureyes.Thusordinarybrickwallsaretransformedintointerestingworksofart. Someartistsincludecamouflageintheirworktosaysomethingaboutthemodernworldwelivein.ForexampleAmericanartistTrinaMerrycamouflagespeoplesothattheydisappearinthelandscapesshe photographs.HerlatestseriesNewYorkCityblends融合womenandtheirenvironmenttocreateimagesthatcloselyexaminetherelationshipbetweenpeopleandwheretheylive.MyseriesshowsrespectforBigApplewomenwhofeeltheneedtoblendinwitheveryoneelseinNewYorkMerrysays.Ithinkmanywomenmoveherehopingtoliveacitylifewhentherealityisthatmostwomenhavetochangetheirfancydesignerheelsonthesubwayformorepracticalsneakers. 1Whichofthefollowingwordsbestdescribecamouflageart? A.Flat. B.Invisible. C.Dull. D.Disappointing. 2Whatisthepurposeofusingcamouflageinnature? A.Tomakeanimalslooknicer. B.Toexpresspeople'sartisticconcept. C.Tosurprisesmalleranimalsorinsects. D.Toprotectanimalsfromnaturalenemies. 3Fromthelastparagraphweknowthat. A.Merryfeeltheneedtofitinwithothersinthecity B.mostwomenwearfancydressesintheirdailylifeinthecity C.womeninNewYorkhavesucceededinbeingapartofthecity D.NewYorkcitycanpartlymirrorpeople'slifeinmodernsociety 4Thisarticleismainlyabout. A.aformofart B.theseriesofpaintings C.afamousartist D.thewomeninNewYork
Iwillneverforgetthedarknessthepainandstrongdesiretodie. NovemberarrivedgreyandbusyandgoingintoanevenmorestressfulDecemberIwasfilledwithanxiousthoughts.Avisittomyfather'sgraveisoftenagoodchancetocryandwhenIleaveIfeelalittle moreatpeace.Butthistimewasdifferent.IdrovehomeandeverynightfortherestofthatweekIcried. OnSaturdayIwatchedaTVprogramteachingbakingandthenIstartedtolearn.BytheendoftheweekendIhadatablecoveredwithsweettreats.Ipackagedthemupintinsattachedalabeltoeachofthemwithwinterloveonitanddroppedthemoffonafewofmyneighbors'porches.Itshockedmehowmuchitlightenedmymoodseeingasmallpackagelostonaporch.ThethanksIreceivedlaterfromtheneighborsmademelightup.Itfeltsogoodanditdistractedmefrommydarkthoughts. ByJanuaryIhaddevelopedaroutineonSundayI'dbakecookiesandpackagethemupandonMondayI'ddeliverthem.EveryweekIaddedafewdifferentpeopletomydeliveryroute.Thenthingsstartedshowinguponmydoorstep﹣ahomemadecupapairofsockswithcookiesandevenagiftcertificatefromthelocalbookstore.Everysingleonemeltedmyheart.ButwhatIreallyappreciatedwashowpeoplebegantosharetheirownstoriesofmentalhealthwithme.Thereisnogreaterhonorthantobetrustedwithanother'slife.Iwasoverwhelmedbytheloveandcareofmycommunity.Ithumbledmethatsomethingsosimplehadcreatedsuchincrediblekindness. Iwasshiftingintoanewseasonoflightwhilelettinggoofaseasonofdarkness.Itremindedmethatthereisbeautyinbeingkindandthatlifeistoughbutthereisaquietstrengthinknowingyouarenotalone. 1Whatcanweknowabouttheauthorfromthefirsttwoparagraphs? A.Shefeltlifewastoopainfultolive. B.Shewasinabadphysicalcondition. C.Shewasstressedduetoherfather'sdeath. D.Sherecoveredaftervisitingherfather'sgrave. 2Aftershestartedsharingcookieswithneighborstheauthor. A.gainedtrustandcarefromthem B.addedotherthingstoherdeliverylist C.feltherlifewasnolongerbusyorstressful D.foundsomeofthemhadmorementalproblemsthanher 3Whatisthemainpurposeofthispassage? A.Toexpressgratitudetocaringneighbors. B.Tosharehowbeingkindhelpedherregainhope. C.Tospeakofthebenefitsofbakingcookiesathome. D.Toshowtheimportanceofatrustedcommunity.
某英文报社正在开展环保大讨论向你约稿.请以垃圾分类为主题按照以下要点发表你的观点 1.意义 2.现状 3.建议 注意1.词数100左右 2.文章标题已拟好不计入总次数. 3.参考词汇垃圾分类garbageclassification OnGarbageClassification Yours LiHua
种群增长率是指单位时间内新增加的个体数占种群个体总数的比率可表示为×100%.调查某种群一段时间内某些特征的变化得到如图AB两条曲线以下分析正确的是
某省实行高考改革考生除参加语文数学英语统一考试外还需从物理化学生物政治历史地理6科中选考3科.学生甲想报考某高校的医学专业.就必须要从物理生物攻治3科中至少选1科则学生甲的选考方法种数为用数字作答
如图为人体下丘脑参与的部分调节过程示意图.回答下列问题 1人在寒冷环境中下丘脑神经分泌细胞分泌的激素A是激素B只能作用于甲状腺细胞的原因是.甲状腺激素在人体中的作用是. 2若图中“下丘脑→激素A→垂体→激素B”过程调节着人体内性腺分泌性激素某人下丘脑功能正常但性激素含量不足原因是垂体或性腺两种器官中的某一器官功能受损.临床上可通过给患者注射激素填“A”或“B”然后检测血液中性激素的含量变化进行诊断若则说明垂体功能受损.
假如你是李华你约好昨天去公交车站接你的朋友Dylan但你却迟到了10分钟令他很失望.请用英语给他写一封道歉信要点如下 1.向他表示道歉2.表达你对此事的认识3.请求他的原谅. 注意1.词数80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. DearDylan Yours LiHua
In2013Tallinn爱沙尼亚首都塔林becametheworld'sfirstcapitalcitytoofferpeoplefreepublictransport.LastyearEstonia爱沙尼亚settheaimtobecomethefirstcountrywithfreepublictransportnationwide.Busesarenowfreeofchargein11ofits15counties. Tallinn'scitygovernmentcameupwiththeideaoffreetransportin2008.Eventhoughthecitypaidmorethan70%ofpublic﹣transportcoststicketpriceswerestilltoohighforpoorerpeople.Crowdednesshadalsobecomeaproblem.Since1991thenumberofpeopleowningcarshasdoubled. Opponents反对者thoughttheideaunaffordableandcritics批评者predictedthetransportsystemwouldbecomeovercrowdedandlackmoney. Surprisinglypublictransporthasimproveddespitea€12millionhittothesystem'sfinancesfromlostticketsales.Tallinn'spopulationhasgrownleadingtoanincreaseinlocaltaxintake.Additionalrevenue财政收入comesfromtouristswhostillhavetobuytickets.TheuseofpublictransportinTallinnhasgoneupby10%whilethenumberofcarsinthecityhasgonedownby10%meaninglesscongestion. NowothercountriesarelookingatEstonia'sexperience.TallinnofficialssaytheyhavehadinterestfromFranceSwedenPolandItalyandGermany.Otherplaceshavealreadyintroducedfreepublictransportforcertaingroupsoratcertaintimes.InEngland1/3ofallbustripsarefare﹣freeespeciallyforpensioners领养老金者Walesrunsfreetravelatweekendstoimprovetourism.Butsofarfullfare﹣freetravelisrare.ThecityofHasseltinBelgiumranfreepublictransportfor16yearsbeforereintroducingfaresbecauseofincreasingcosts. 1Whichofthefollowingplacesoffersfullfare﹣freepublictransport? A.Hasselt B.Estonia C.Wales D.Tallinn 2WhatideadidtheopponentsandcriticsshareaboutTallinn'sfreepublictransport? A.Thegovernmentwouldn'thaveenoughmoneytocarryitout. B.Itwouldn'thelpwiththecity'sovercrowdedness. C.Itwouldleadtotheheavylossfromticketsales. D.Yearslaterthecitywouldreintroducefaresfrompeople. 3Whatdoestheunderlinedwordinparagraph4mean? A.pollution B.population C.crowdedness D.income 4WhydoyouthinksomanycountriesshowinterestinEstonia'sexperience? A.Itoffersmorejobopportunitiesforpeople. B.Ithelpstosolvethetrafficproblemincities. C.Itencouragespeopletostopdriving. D.Itattractsmoretouriststotakebuses.
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