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如图所示，粗细均匀的U形管中，封闭了有两段水银柱和两部分空气柱，水银柱A的长度h1＝25cm，位于左侧封闭端的顶部．水银柱B与A之间的空气柱长度L1＝12.5cm，右侧被活塞C封闭的空气柱长度L2＝...
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高三下学期物理《》真题及答案
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如图3所示两端封闭粗细均匀竖直放置的玻璃管内有一长为h的水银柱将管内气体分为两部分已知l2=2l1.
如图所示粗细均匀的U形管中封闭了有两段水银柱和两部分空气柱水银柱A的长度h1＝25cm位于左侧封闭
两端封闭的U形管竖直放置管内左右两段空气柱A和B被底部水银柱隔开如图1所示.设原来的温度为T当温度升
如图所示粗细均匀上端封闭的三通细玻璃管中用水银与活塞封闭了两段温度相同长度分别为lA=25cm和lB
如图所示粗细均匀丙端开口的U.形管竖直放置两管的竖直部分高度为20cm内径很小水平部分BC长14cm
如图所示两端封闭的玻璃管中间有一段水银柱经适当倾斜上下两部分气体的体积恰好相等保持玻璃管位置不变管内
如图所示两端封闭粗细均匀的竖直放置的细玻璃管中间用长为h的水银柱将空气柱分为两部分两段空气柱长度分
水银柱上升
水银柱下降
水银柱不动
无法确定
如图所示玻璃管粗细均匀粗细可忽略不计竖直管两封闭端内理想气体长分别为上端30cm下端27cm中间水银
如图所示粗细均匀的U形玻璃管竖直放置左管上端封闭封口处有一段水银柱1右管上端开口且足够长另有两段水
如右图所示玻璃管粗细均匀粗细可忽略不计竖直管两封闭端内理想气体长分别为上端30cm下端27cm中间水
如图所示粗细均匀的U.形管左端封闭O.处由橡皮软管连接左右两端竖直管内有高为19cm的水银柱封住两部
如图所示粗细均匀的U形玻璃管竖直放置左管上端封闭封口处有一段水银柱1右管上端开口且足够长另有两段水
如图所示粗细均匀的U.形管竖直放置管内有水银柱封住一段空气柱如果沿虚线所示的位置把开口一侧的部分截掉
体积不变
体积变大
压强变大
压强不变
如图所示粗细均匀丙端开口的U.形管竖直放置两管的竖直部分高度为20cm内径很小水平部分BC长14cm
如图所示两端封闭的粗细均匀的U形管中封闭了一段水银柱U形管左右两端各有一段空气柱.U形管由静止自由下
如图所示粗细均匀的U.形管竖直放置管内由水银柱封住一段空气柱.如果沿虚线所示的位置把开口一侧的部分截
体积变小；
体积变大；
压强变小；
压强不变。
如图所示粗细均匀的U形管中封闭了有两段水银柱和两部分空气柱水银柱A的长度h1＝25cm位于左侧封闭
在图1所示的两端封闭水平放置的粗细均匀玻璃管中水银柱将气体隔成了体积不同的左右两部分.初温T左＞T右
如图所示U.形管两臂竖直固定右管中一段水银柱
与管底部水银间有一段空气柱
被封于右臂管子的中部，A.部分水银在水平管中，设U.形管内粗细均匀，两端均开口与大气相通，现再向左管注入少量水银，温度保持不变，等平衡后可知 [ ] A.空气柱B.的压强增大 B.空气柱B.的长度不变
图中h减小
图中h不变
一端封闭的粗细均匀的玻璃管开口向上竖直放置管内有甲乙两段水银柱封闭的
B.两部分气体，水银柱甲的底部是一只很薄的活塞丙（活塞重力不计），活塞被管内壁上的小突起物支持着，只能无摩擦地向上运动。已知大气压强为75cmHg，且A.中气体压强也是75cmHg，两段空气柱温度都是127℃，其余尺寸如图所示。现保持A.中气体温度不变，而使
中气体温度升高。当水银柱甲开始向上移动时，B.中气体温度升高了 （ ） （A.）80K （B.）60K （
）50K （
）30K
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Ifyoufeelstressedbyresponsibilitiesatworkyoushouldtakeastepbackandidentify识别thoseof61greatandlessimportance.Thenhandlethemostimportanttasksfirstsoyou'llfeelarealsenseof62achieve.Leavingthelessimportantthingsuntiltomorrow63beoftenacceptable. Mostofusaremorefocused64ourtasksinthemorningthanwearelaterintheday.Sogetanearlystartandtrytobeasproductive65possiblebeforelunch.Thiswillgiveyoutheconfidenceyouneedtogetyouthroughtheafternoonandgohomefeelingaccomplished. Recent66studyshowthatwearefarmoreproductiveatworkifwetakeshortbreaks67regular.Giveyourbodyandbrainarestbysteppingoutsidefor68whileexercisingordoingsomethingyouenjoy. Ifyoufindsomethingyoulovedoingoutsideoftheofficeyou'llbelesslikely69bringyourworkhome.Itcouldbeanything﹣gardeningcookingmusicsports﹣butwhateveritis70makesureit'sarelieffromdailystressratherthananotherthingtoworryabout. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
内环境保持稳态是细胞进行正常生命活动的必要条件．图1表示进食后血糖浓度胰高血糖素和胰岛素三种物质含量的变化图2是两种糖尿病I型和Ⅱ型的发病机理．图3为人体生命活动调节示意图．请据图回答下列问题 1图1中表示胰岛素含量变化的是填字母． 2图1中A含量第二次升高的原因是A的含量增加导致了C含量达到最大值后含量下降这种调节属于． 3图2所示的两种糖尿病中糖尿病可以用注射胰岛素制剂的方法治疗．胰岛素分子从产生部位运输到靶细胞附近后只有与靶细胞表面上的结合后才能发挥降血糖的作用据此可分析Ⅱ型糖尿病的病因是． 4若图3表示体温调节过程则体温调节方式属于调节C→D→E调节过程参与血糖调节此过程属于调节．
某小组同学在实验室研究Al与CuCl2溶液的反应． 1现象ⅰ中的红色物质是． 2经检验现象ⅱ中的无色气体为氢气． ①甲认为Al与H+反应产生了氢气用离子方程式表示溶液中存在大量H+的原因． ②氢气从红色物质表面逸出的原因是． 3探究白色沉淀的化学成分． 查阅资料Cu+可与浓氨水反应生成CuNH32+无色该无色物质在空气中易被氧化变为蓝色． 乙认为白色沉淀可能是CuCl并通过实验证明其猜测正确实验步骤如下 a．取白色沉淀充分洗涤 b．向其中加入浓氨水沉淀溶解得到无色溶液将无色溶液分为两份 c．取其中一份无色溶液… d．将另一份无色溶液放置于空气中一段时间后溶液变为蓝色． ①步骤c的实验方案是． ②用化学平衡移动原理解释CuCl溶于浓氨水的原因． 4探究CuCl产生的原因． ①丙猜测可能是Cu与CuCl2溶液反应生成了CuCl因为Cu具有性． ②取Cu粉与1mol/LCuCl2溶液混合无白色沉淀产生丙再次分析Al与CuCl2溶液反应的实验现象改进实验方案证明了Cu与CuCl2溶液反应生成了CuCl改进之处是．
屠呦呦1971年发现分离提纯并用于治疟新药“青蒿素”拯救了数千万人的生命．青蒿素分子结构如图．下列说法错误的是
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NA代表阿伏加德罗常数的数值下列说法正确的是
我国科学家在天然气脱硫研究方面取得了新进展利用如图装置可发生反应H2S+O2─H2O2+S↓． 已知甲池中发生的反应为下列说法正确的是
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如图所示在固定的气缸A和B中分别用活塞封闭一定质量的理想气体活塞面积之比为SASB＝12两活塞以穿过B的底部的刚性细杆相连可沿水平方向无摩擦滑动．两个气缸都不漏气．初始时AB中气体的体积皆为V0温度皆为T0＝300K．A中气体压强PA＝1.5P0P0是气缸外的大气压强．现对A加热使其中气体的压强升到pA′＝2p0同时保持B中气体的温度不变．求此时A中气体温度TA．
1981年我国科学工作者在世界上首次人工合成了醇母丙氨酸tRNA用tRNAyAla表示．回答下列问题 1tRNA在细胞中的合成以为模板． 2一种tRNA可以携带种氨基酸． 3tRNAyAla的生物活性是指在蛋白质合成过程中既能携带丙氨酸又能． 4在测定人工合成的tRNAyAla活性时科学工作者先将3H﹣丙氨酸与tRNAyAla结合为3H﹣丙氨酸﹣tRNAyAla然后将其加入到蛋白质的生物合成体系中．若在新合成的多肽链中检测到则表明人工合成的tRNAyAla具有生物活性．还有其他不同的tRNA也能携带丙氨酸原因是． 5一个核糖体与mRNA的结合部位形成个tRNA结合位点． 6需要tRNA和核糖体参与的过程是． 7mRNA上的密码子与tRNA上的反密码子的对应关系是． 8请用一句话概括“基因”“性状”以及“蛋白质”之间的关系．
如图表示同一群落中的甲乙两个种群其δδ＝出生率/死亡率随时间的变化的曲线有关分析正确的是
假定你是李华你校摄影俱乐部photographyclub将举办国际中学摄影展.请给你的英国朋友Peter写封信.请他提供作品.信的内容包括: 1.主题:环境保护; 2.展览时间; 3.投稿邮箱:intlphotoshow@gmschool.com. 注意: 1.词数100左右; 2.可以适当增加细节以使行文连贯.
JoyintheJourney Ifyouhaveeverbeendiscouragedbecauseoffailurepleasereadon.Foroftenachievingwhatyousetouttodoisnottheimportantthing.Letmeexplain. Twobrothersdecidedtodigadeepholebehindtheirhouse.Astheywereworkingacoupleofolderboysstoppedbyto1.Whatareyoudoing?askedoneofthevisitors.Weplantodigaholeallthewaythroughthe2!Oneofthebrothersvolunteered3. Theolderboysbeganto4tellingtheyoungeronesthatdiggingaholeallthewaythroughtheearthwas5.Afteralongsilenceoneofthe6pickedupajarfullofspiderswormsandmanyotherkindsofinsects.He7thelidandshowedthewonderful8tothescoffing嘲笑的visitors.Thenhesaidquietlyand9Evenifwedon'tdigallthewaythroughtheearthlookatwhatwehavefound10theway! Theirgoalwasfartooambitiousbutitdidcausethemtodig.Andthatis11agoalisfor﹣tocauseustomoveinthe12wehavechoseninotherwordstokeepus53!Butnoteverygoalwillbefully14.Noteveryjobwillend15.Noteveryhopewillcometopass.Noteverylovewilllast.Noteverydreamwillbe16.Butwhenyoufall17ofyouraimperhapsyoucansayYesbutlookatwhatIfoundalongtheway!Lookatthewonderfulthings18mylifebecauseItriedtodosomething!Itisinthedigging19lifeislived.AndIbelieveitisthejoyinthejourneyintheendthattruly20. 1.A.rest B.work C.watch D.laugh 2.A.house B.earth C.wall D.road 3.A.calmly B.patiently C.excitedly D.impatiently 4.A.laugh B.think C.stare D.smile 5.A.important B.difficult C.impossible D.interesting 6.A.passers﹣by B.watchers C.visitors D.diggers 7.A.pulled B.removed C.broke D.pushed 8.A.contents B.scenes C.pictures D.jars 9.A.properly B.confidently C.carefully D.happily 10.A.in B.along C.to D.out 11.A.what B.how C.where D.which 12.A.way B.direction C.life D.sight 13.A.thinking B.moving C.digging D.living 14.A.made B.prepared C.kicked D.achieved 15.A.hopelessly B.pleasantly C.surprisingly D.successfully 16.A.cometrue B.realized C.made D.treasured 17.A.short B.lost C.out D.behind 18.A.breakinginto B.turningto C.cominginto D.holdingto 19.A.when B.where C.which D.that 20.A.matters B.happens C.appears D.exists
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下列生命系统的活动不是单向进行的是
假定你是李华你校摄影俱乐部photographyclub将举办国际中学摄影展.请给你的英国朋友Peter写封信.请他提供作品.信的内容包括: 1.主题:环境保护; 2.展览时间; 3.投稿邮箱:intlphotoshow@gmschool.com. 注意: 1.词数100左右; 2.可以适当增加细节以使行文连贯.
假定你校正在开展根除陋习创建文明校园活动.请你以此为主题用英语写一篇发言稿向全校学生倡议: 1.根除:乱扔垃圾浪费食物吸烟…2.提倡:讲礼貌互助… Dearfriends Asisknowntoallourschoolhaslaunchedacampaignagainstbadhabitsinordertobuildacivilizedcampus. That'sall.Thankyou.
Teacherssaythedigitalagehashadagoodinfluence﹣andanot﹣so﹣goodinfluence﹣onthisgenerationofAmericanteenagers.Morethan2000teacherstookanonlinesurvey.Three﹣quartersoftheteacherssaidtheInternetanddigitalsearchtoolshavehadamostlypositiveeffectontheirstudents'researchhabitsandskills.But64percentsaidthetechnologiesdomoretodistract使……分心studentsthantohelpthemacademically.And87percentagreedthatthesetechnologiesarecreatinganeasilydistractedgenerationwithshortattentionspans. ThePewInternetProjectdidthesurveywiththeNationalWritingProject.JudyBuchananisthevicedirectoroftheNationalWritingProjectandaco﹣authorofthereport.Ms.Buchanansaysdigitalresearchtoolsarehelpingstudentslearnmoreandfaster.Teachersreallyfavorthesetoolsbecausetheyarewaystomakesomeofthelearningexcitingandengaging.Youngpeoplefavorthesetools.Thegoalistoreallyhelpthembecomecreatorsofmeaningfulcontentandnotjustsortofconsumers. Butoneproblemthesurveyfoundisthatmanystudentslackdigitalliteracy.TheytrusttoomuchoftheinformationtheyfindontheInternet.Judysaysthesestudentshaven'tdevelopedtheskillstodeterminethequalityofonlineinformation.It'ssomethingthatreallyhastobetaughtandpaidattentionto.Becauseinaworldinwhichthingshappenquicklyyoudoneedtostepbackreflectandanalyzetheinformationyouhave. Anotherproblemisblamedonsomethingthatmightnotseemlikeaproblematall:beingabletoquicklyfindinformationonline.Teacherssaytheresultisareductioninthedesireandabilityoftheirstudentstoworkhardtofindanswers.Theysaystudentsareoverlydependentonsearchenginesanddonotmakeenoughuseofprintedbooksorresearchlibraries. ManyteachersarealsoconcernedthattheInternetmakesiteasyforstudentstocopyworkdonebyothersinsteadofusingtheirownabilities. 1.Thetextmainlytellsus. A.allthestudentsusedigitaltools B.theInternetisplayingakeyrole C.teachersencourageusingdigitaltools D.digitaltoolsbringaboutbenefitsandproblems 2.Whichofthefollowingbestshowsthestructureofthetext? ①＝Para1②＝Para2③＝Para3④＝Para4⑤＝Para5 3.Theunderlinedsentenceinthethirdparagraphprobablymeans. A.studentsdonothavetherightdigitaltools B.studentsdonotalwayshaveaccesstotheInternet C.studentshaven'ttheabilitytoadjustthemselves D.studentscan'tjudgeonlineinformationproperly 4.Somestudentsdon'ttendtoworkhardbecause. A.theycangetanswersontheInternetquickly B.printedbooksandlibrariesaroundaren'tenough C.theInternetcan'tmakestudentsconcentrate D.theycancopyeachothers'workwithoutbeingpunished
Hundredsofpeoplehaveformedimpressionsofyouthroughthatlittledevice装置onyourdesk.Andthey'veneveractually41you.Everythingtheyknowaboutyou42throughthisdevicesometimesfromhundredsofmilesaway.43heyfeeltheycanknowyou44fromthesoundofyourvoice.That'showpowerfulthe45is. Powerfulyesbutnotalways46.ForyearsIdealtwithmytravelagentonlybyphone.RanimyfacelessagentwhomI'dnevermet47gotmerock﹣bottompricesonairfarescarsandhotels.Buthercoldvoicereally48me.Isometimeswishedto49anotheragent. OnemorningIhadto50animmediateflighthomeforafamilyemergency.IranintoRani'soffice51.Thewomansittingatthedesk52mymadnesssympatheticallyjumpedup.Shegavemea53smilenoddedwhilelisteningpatientlyandthenprintedoutthe54immediately.Whatawonderfullady!Ithought. Rushingout55IcalledoutovermyshoulderBythewaywhat'syourname?I'mRanishesaid.Iturnedaroundandsawa56womanwithabigsmileonherfacewavingtowishmeasafetrip.Iwas57!WhyhadIthoughtshewascold?Raniwaswellso58. SittingbackinthecaronthewaytotheairportIfigureditallout.Rani's59﹣﹣﹣herwarmsmilehernodsher‘I'mhereforyou'60﹣﹣﹣wereallsilentsignalsthatdidn'ttravelthroughwires. 41.A.accepted B.noticed C.heard D.met 42.A.came B.moved C.ran D.developed 43.A.Thus B.Yet C.Then D.Indeed 44.A.rather B.also C.just D.already 45.A.Telephone B.voice C.connection D.impression 46.A.direct B.useful C.easy D.accurate 47.A.inperson B.bymyself C.inpublic D.onpurpose 48.A.annoyed B.interested C.discouraged D.confused 49.A.promote B.train C.find D.know 50.A.arrange B.postpone C.confirm D.book 51.A.forthefirsttime B.atanytime C.fromtimetotime D.ingoodtime 52.A.expecting B.seeing C.testing D.avoiding 53.A.shy B.comforting C.familiar D.forced 54.A.bill B.form C.ticket D.list 55.A.hopefully B.disappointedly C.gratefully D.regretfully 56.A.careful B.serious C.nervous D.pleasant 57.A.amused B.worried C.helpless D.speechless 58.A.calm B.nice C.proud D.clever 59.A.forgiveness B.eagerness C.friendliness D.skillfulness 60.A.explanation B.attitude C.concept D.Behavior
图1表示绿色植物叶肉细胞部分结构中的某些生命活动过程①一⑦代表各种物质甲乙代表两种细胞器．图2是某研究小组在25℃条件下以大豆为材料进行研究得到的实验结果光合作用的最适温度为25℃呼吸作用的最适温度为30℃．据图回答下列问题 1图1中甲增加膜面积主要是通过物质①利用光能分解产生图1中填写图中序号物质． 2若该绿色植物长时间处于__状态则图1中“⑥一⑤一⑥”的循环不能进行的原因是缺少和．若将该植物突然转移到高温强光照的环境中叶片气孔将 逐渐关闭此时叶肉细胞内物质⑥的含量变化是填“增加”“不变”或“减少”． 3图2中光照强度低于F时影响大豆光合作用的限制因子是．F光照强度下要使光合速率升高可以考虑的措施是提高填“CO2浓度”或“O2浓度”． 4若将图2的实验温度升高5℃则E点向填“左”或“右”侧移动．
Readingcanbeasocialactivity.Thinkofthepeoplewhobelongtobookgroups.Theychoosebookstoreadandthenmeettodiscussthem.NowthewebsiteBookCrossing.comBookCrossing.comturnsthepageonthetraditionalideaofabookgroup. Membersgoonthesiteandregisterthebookstheyownandwouldliketoshare.BookCrossingprovidesanidentificationnumbertostickinsidethebook.Thenthepersonleavesitinapublicplacehopingthatthebookwillhaveanadventuretravelingfarandwidewitheachnewreaderwhofindsit. BrucePedersonthemanagingdirectorofBookCrossingsaysThetwothingsthatchangeyourlifearethepeopleyoumeetandbooksyouread.BookCrossingcombinesboth. Membersleavebooksonparkbenchesandbusesintrainstationsandcoffeeshops.Whoeverfindstheirbookwillgotothesiteandrecordwheretheyfoundit. Peoplewhofindabookcanalsoleaveajournalentrydescribingwhattheythoughtofit.E﹣mailsarethensenttotheBookCrossingtokeepthemupdatedaboutwheretheirbookshavebeenfound.Brucepetersonsaystheideaisforpeoplenottobeselfishbykeepingabooktogatherdustonashelfathome. BookCrossingispartofatrendamongpeoplewhowanttogetbacktotherealandnotthevirtual虚拟.Thesitenowhasmorethanonemillionmembersinmorethanonehundredthirty﹣fivecountries. 29.Whydoestheauthormentionbookgroupsinthefirstparagraph? A.Toexplainwhattheyare. B.TointroduceBookCrossing. C.Tostresstheimportanceofreading. D.Toencouragereaderstosharetheirideas. 30.WhatdoestheunderlinedworditinParagraph2referto? A.Thebook. B.Anadventure. C.Apublicplace. D.Theidentificationnumber. 31.WhatwillaBookCrosserdowithabookafterreadingit? A.Meetotherreaderstodiscussit. B.Keepitsafeinhisbookcase. C.Passitontoanotherreader. D.Mailitbacktoitsowner. 32.Whatisthebesttitleforthetext? A.OnlineReading:AVirtualTour B.ElectronicBooks:AnewTrend C.ABookGroupBringsTraditionBack D.AWebsiteLinksPeoplethroughBooks.
机械横波某时刻的波形图如图所示波沿x轴正方向传播质点P的坐标x＝0.32m．从此时刻开始计时 ①若每间隔最小时间0.4s重复出现波形图求波速 ②若P点经0.4s第一次达到正向最大位移求波速 ③若P点经0.4s到达平衡位置求波速．
食物进入胃会刺激胃壁上的感受器引起胰腺分泌多种消化酶由胃进入小肠的食物和盐酸会刺激小肠分泌促胰液素也能引起胰腺的分泌．下列相关分析错误的是
下列关于细胞结构与功能的叙述正确的是
利用紫外线诱变选育高产β﹣胡萝卜素的三孢布拉霉负菌未突变菌不能在含有一定浓度的β﹣紫罗酮的培养基上生长菌体随β﹣胡萝卜素含量增加从黄色加深至橙红色．图甲为选育及提取获得β﹣胡萝卜素流程请回答下列问题 1用紫外线照射三孢布拉霉负菌的目的是．为选出高产突变菌种还应在培养基中添加在接入菌种前应对培养基进行以避免杂菌污染． 2某同学进行正确的接种操作后平板经培养后的菌落分布如图乙所示．该同学的接种方法是由于所以培养基上只有少数菌能生长形成菌落． 3进行③过程时应选取色的菌落接种至液体培养基．过程⑥是用纸层析法鉴定提取的胡萝卜素粗品． 4将萃取的胡萝卜素样品与β﹣胡萝卜素标样层析后进行比对结果如图丙从图中分析可知色带为β﹣胡萝卜素．
小张查阅资料得知α﹣淀粉酶的最适温度是55℃．如表是他为此进行的验证实验但因各组结果相同而不能达到实验目的 注溶液呈棕黄色即表示没有检测出淀粉以下改进措施中可行的是
Readingcanbeasocialactivity.Thinkofthepeoplewhobelongtobookgroups.Theychoosebookstoreadandthenmeettodiscussthem.NowthewebsiteBookCrossing.comBookCrossing.comturnsthepageonthetraditionalideaofabookgroup. Membersgoonthesiteandregisterthebookstheyownandwouldliketoshare.BookCrossingprovidesanidentificationnumbertostickinsidethebook.Thenthepersonleavesitinapublicplacehopingthatthebookwillhaveanadventuretravelingfarandwidewitheachnewreaderwhofindsit. BrucePedersonthemanagingdirectorofBookCrossingsaysThetwothingsthatchangeyourlifearethepeopleyoumeetandbooksyouread.BookCrossingcombinesboth. Membersleavebooksonparkbenchesandbusesintrainstationsandcoffeeshops.Whoeverfindstheirbookwillgotothesiteandrecordwheretheyfoundit. Peoplewhofindabookcanalsoleaveajournalentrydescribingwhattheythoughtofit.E﹣mailsarethensenttotheBookCrossingtokeepthemupdatedaboutwheretheirbookshavebeenfound.Brucepetersonsaystheideaisforpeoplenottobeselfishbykeepingabooktogatherdustonashelfathome. BookCrossingispartofatrendamongpeoplewhowanttogetbacktotherealandnotthevirtual虚拟.Thesitenowhasmorethanonemillionmembersinmorethanonehundredthirty﹣fivecountries. 29.Whydoestheauthormentionbookgroupsinthefirstparagraph? A.Toexplainwhattheyare. B.TointroduceBookCrossing. C.Tostresstheimportanceofreading. D.Toencouragereaderstosharetheirideas. 30.WhatdoestheunderlinedworditinParagraph2referto? A.Thebook. B.Anadventure. C.Apublicplace. D.Theidentificationnumber. 31.WhatwillaBookCrosserdowithabookafterreadingit? A.Meetotherreaderstodiscussit. B.Keepitsafeinhisbookcase. C.Passitontoanotherreader. D.Mailitbacktoitsowner. 32.Whatisthebesttitleforthetext? A.OnlineReading:AVirtualTour B.ElectronicBooks:AnewTrend C.ABookGroupBringsTraditionBack D.AWebsiteLinksPeoplethroughBooks.
野生型金黄色葡萄球菌对青霉素敏感将它接种到青霉素浓度为0.1单位/cm3的培养基上大多数菌株死亡极少数菌株能存活下来．存活下来的菌株经过不断选育最后可获得能生长在青霉素浓度为250单位/cm3的培养基上的细菌品系．据此分析下列有关说法正确的是
What'sOn? ElectricUnderground 7.30pm﹣1.00amFreeattheCyclopsTheatre Doyouknowwho'splayinginyourarea?We'rebringingyouaneveningofliverockandpopmusicfromthebestlocalbands.Areyouinterestedinbecomingamusicianandgettingarecordingcontract合同?Ifsocomeearlytothetalkat7.30pmbyJulesSkyeasuccessfulrecordproducer.He'sgoingtotalkabouthowyoucanfindtherightpersontoproduceyoumusic. GeeWhizz 8.30pm﹣10.30pmComedyatKaleidoscope ComeandseeGeeWhizzperform.He'sthefunnieststand﹣upcomedianonthecomedyscene.Thisjoyfulshowwillpleaseeveryonefromtheyoungesttotheoldest.GeeWhizzreallyknowshowtomakeyoulaugh!Ourbarisopenfrom7.00pmfordrinksandsnacks快餐. Simon'sWorkshop 5.00pm﹣7.30pmWednesdaysatVictoriaStage Thisisagoodchanceforanyonewhowantstolearnhowtodocomedy.Theworkshoplooksateverykindofcomedyandpracticesmanydifferentwaysofmakingpeoplelaugh.Simonisacomedianandactorwhohas10years'experienceofteachingcomedy.Hisworkshopsareexcitingandfun.AneveningwithSimonwillgiveyoutheconfidencetobefunny. CharlotteStone 8.00pm﹣11.00pmPizzaWorld Finefoodwithbeautifuljazzmusic;thisisagreateveningout.CharlotteStonewillperformsongsfromhernewbest﹣sellingCDwithJamesPickeringonthepiano.ThemenuisItalianwithexcellentmeatandfreshfishpizzasandpasta面食.Bookearlytogetatable.Ourbarisopenalldayandservescocktailscoffeebeerandwhitewine. 21.Whocanhelpyouifyouwanttohaveyourmusicproduced? A.JulesSkye.B.GeeWhizz. C.CharlotteStone.D.JamesPickering. 22.Atwhichplacecanpeopleofdifferentagesenjoyagoodlaugh? A.TheCyclopsTheatreB.Kaleidoscope C.VictoriaStageD.PizzaWorld 23.WhatdoweknowaboutSimon'sWorkshop? A.Itrequiresmembershipstatus. B.Itlaststhreehourseachtime. C.Itisrunbyacomedyclub. D.ItisheldeveryWednesday. 24.WhenwillCharlotteStoneperformhersongs? A.5.00pm﹣7.30pm. B.7.30pm﹣1.00am. C.8.00pm﹣11.00pm. D.8.30pm﹣10.30pm.
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