2015年职称英语考试综合类C级概括大意模拟练习题

正保远程教育（美国纽交所上市公司代码：DL）_____________________________________________________________________[1]职业培训教育网010-82333888（24小时）为帮助考生有效备考2015年职称英语考试，网校特意整理了2015年职称英语考试综合类C级概括大意模拟练习题，希望对您学习职称英语有所帮助！MaglevTrains1Afewcountriesareusingpowerfulelectromagnetstodevelophigh-speedtrains,calledmaglevtrains.Maglevisshortformagneticlevitation1,whichmeansthatthesetrainsfloatoveraguidewayusingthebasicprinciplesofmagnetstoreplacetheoldsteelwheelandtracktrains.2Ifyou'veeverplayedwithmagnets,youknowthatoppositepolesattractandlikepolesrepeleachother2.Thisisthebasicprinciplebehindelectromagneticpropulsion.Electromagnetsaresimilartoothermagnetsinthattheyattractmetalobjects,butthemagneticpullistemporary.YoucaneasilycreateasmallelectromagnetyourselfbyconnectingtheendsofacopperwiretothepositiveandnegativeendsofanAA-cellbattery3.Thiscreatesasmallmagneticfield.Ifyoudisconnecteitherendofthewirefromthebattery,themagneticfieldistakenaway.3Themagneticfieldcreatedinthiswire-and-batteryexperimentisthesimpleideabehindamaglevtrainrailsystem.Therearethreecomponentstothissystem：Alargeelectricalpowersource,metalcoilsliningaguidewayortrack,andlargeguidancemagnetsattachedtotheundersideofthetrain.4Thebigdifferencebetweenamaglevtrainandaconventionaltrainisthatmaglevtrainsdonothaveanengine——atleastnotthekindofengineusedtopulltypicaltraincarsalongsteeltracks4.Theengineformaglevtrainsisratherinnoticeable.Insteadofusingfossilfuels,themagneticfieldcreatedbytheelectrifiedcoilsintheguidewaywallsandthetrackcombinestopropelthetrains.5Themagnetizedcoilrunningalongthetrack,calledaguideway,repelsthelargemagnetsonthetrain'sundercarriage,allowingthetraintolevitatebetween1to10cmabovetheguideway.Oncethetrainislevitated,powerissuppliedtothecoilswithintheguidewaywallstocreateauniquesystemofmagneticfieldsthatpullandpush~thtrainalongtheguideway.Theelectriccurrentsuppliedtothecoilsintheguidewaywallsisconstantlyalternatingtochangethepolaritymagnetizedcoils.Thischangeinpolaritycausesthemagneticfieldinfrontofthetraintopullthevehicleforward,whilethemagneticfieldbehindthetrainaddsmoreforwardthrust.6Maglevtrainsfloatonacushionofair',eliminatingfriction.Thislackoffrictionallowsthesetrainstoreachunprecedentedgroundtransportationspeedsofmorethan500kph,ortwiceasfastasthefastestconventionaltrain.At500kph,youcouldtravelfromParistoRomeinjustovertwohours.词汇：Levitatev.悬浮electrifiedv.使带电正保远程教育（美国纽交所上市公司代码：DL）_____________________________________________________________________[2]职业培训教育网010-82333888（24小时）Levitationn.悬浮magnetizev.使带磁guidewayn.导向槽linev.排列成行propelbvt.推进undersiden.下侧，下面propulsionn.推进undercarriagen.车盘注释：1.Maglevisshortformagneticlevitation：maglev是magneticlevitation的缩略词。2.oppositepolesattractandlikepolesrepeleachother：异极相吸，同极相斥3.AA-cellbattery：5号电池4.atleastnotthekindofengineusedtopulltypicaltraincarsalongsteeltracks：至少不是沿着轨道拉动典型的火车车厢的那种发动机。5.themagneticfieldcreatedbytheelectrifiedcoilsintheguidewaywallsandthetrackcombinetopropelthetrain：由嵌入导向壁内的电磁线圈产生的磁场加上轨道，一起推动火车前进。Themagneticfield和thetrack是句子主语，createdbytheelectrifiedcoilsintheguidewaywalls是过去分词短语，用作定语，修饰themagneticfield.练习：1.Paragraph.2.Paragraph.3.Paragraph.4.Paragraph.A.TheMainComponentsoftheMaglevTrainSystemB.High-speedMaglevduetoZeroFrictionC.TheWorkingPrincipleoftheMaglevTrainD.DifferencesbetweenPolarityandMagneticFieldE.ComparisonofMaglevTrainswithTraditionalOnes正保远程教育（美国纽交所上市公司代码：DL）_____________________________________________________________________[3]职业培训教育网010-82333888（24小时）F.MaglevwithaPowerfulMotor5.Severalcountriesintheworldareusingstrongelectromagnets.6.Youcanconnectawiretothepositiveandnegativeendsofabattery.7.Auniquesystemofmagneticfieldsiscreatedbythecoils.8.Thefrictionlessmaglevtrainenablesyou.A.todevelopamaglevtrainrailsystemB.ToexplainwhymaglevtrainsarefasterC.topullandpushthetrainforwardD.tocreateamagneticfieldE.toexperimentwiththemaglevtrainF.totravelfromParistoRomeinabouttwohours答案与题解：1.A，第三段了举了磁浮列车的三个组成部分，动力源、金属线圈和此贴。选项A概括了第三段列的内容。2.E，第四段就磁浮列车和传统火车进行了比较：磁浮列车没有发动机而传统火车有发动机。选项C用comparsion来概括是准确的。3.C，第五段比较详细的介绍了为什么磁浮列车会向前运动，也就揭示了磁浮列车的工作原理。4.B，第五段解释了磁浮列车浮起和向前运动的原理之后，作者在第六段中进行了磁浮列车速度奇快的原因：去除了传统火车的车轮于铁轨的摩擦。5.A，选A的依据是本文第一段第一句：Afewcountriesusingpowerfulelectromagnetstodevelophigh-speedtrains,calledmaglevtrains.6.D，第二段说，把电线与干电池相连接就能产生一个小磁场，而磁浮列车的运动原理与此相同。第二段第四句是选择D的依据。正保远程教育（美国纽交所上市公司代码：DL）_____________________________________________________________________[4]职业培训教育网010-82333888（24小时）7.C，第五段的第二句，即“0ncethetrainislevitated，powerissuppliedtothecoilswithintheguidewaywallstocreateauniquesystemofmagneticfieldsthatpullandpushthetrainalongtheguideway”，是选择c的依据。8.F，本文最后一句举出坐上时速500公里的磁浮列车从巴黎到罗马只需约2小时这个例子来说明磁浮列车速度之快。译文：磁悬浮列车一些国家正在使用强有力的额电磁体发展高速列车，这种列车叫作磁悬浮列车。Maglev是磁悬浮的缩略词，它意味着这些列车漂浮在导向槽上，导向槽是使用磁铁的基本原理来替换原来的钢轮子和钢轨道的列车。如果你曾经玩过磁铁，你知道异极相吸，同极相斥的道理。这是电磁式推进背后的基本原理。电磁体与其他磁铁在吸引金属物品方面是一样的，但是电磁力是暂时的。你能通过铜丝连接一节5号电池的正负极很容易地自己创造出一个小的电磁体。这就创造了一个小磁场。如果你从电池分开导线的任意一个末端，磁场就消失。这个导线和电池实验创造的磁场是磁悬浮列车系统背后的简单想法。这个系统有三个成分：一个大电能来源、金属卷排列成导向槽或轨道和附着在列车下面的大的导电磁体。磁悬浮列车和传统列车之间的一个很大的大区别是磁悬浮列车没有发动机——至少不是沿着轨道拉动典型的火车车厢的那种发动机。磁悬浮列车的发动机相当不显眼。代替矿物燃料的使用，由嵌入导向壁内的