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27.Which of the following is a suitable title for the text?A.Bring Artists to SchoolsB.When Historians Meet ArtistsC.Arts Education in BritainD.The World's Best Arts TeacherCCan a small group of drones (guarantee the safety and reliability of railwaysand,at the same time,help railway operators save billions of euros each year?That is thevery likely future of applying today's "eyes in the sky"technology to making sure that themillions of kilometres of rail tracks and infrastructure(基础设施)worldwide are safe fortrains on a 24/7 basis.Drones are already being used to examine high-tension electrical lines.They could doprecisely the same thing to inspect railway lines and other vital aspects of rail infrastructuresuch as the correct position of railway tracks and switching points.The more regularly theycan be inspected,the more railway safety,reliability and on-time performance will be im-proved.Costs would be cut and operations would be more efficient.That includes huge savings in maintenance costs and better protectron of railway person-nel safety.It is calculated that European railways alone spend approximately 20 billion eurosa year on maintenance,including sending maineenance staff,often at night,to inspect andrepair the rail infrastructure.That ean be dangerous work that could be avoided with dronesassisting the crews'effortsBy using the latest technologies,drones could also start providing higher-value servicesfor railways,detecting faults in the rail or switches,before they can cause any safety prob-lems.To perform these tasks,drones for rail don't need to be flying overhead.Engineers arenow working on a new concept:the rail drones of the future.They will be moving on thetrack ahead of the train,and programmed to run autonomously.Very small drones with ad-vanced sensors and AI and travelling ahead of the train could guide it like a co-pilot.Withtheir ability to see ahead,they could signal any problem,so that fast-moving trains would beable to react in time.28.What makes the application of drones to rail lines possible?A.The use of drones in checking on power lines.B.Drones'ability to work at high altitudes.C.The reduction of cost in designing drones.D.Drones'reliable performance in remote areas.高三英语试题，第6页（共12页）