阅读理解

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阅读理解。

　　Beijing-Shanghai Railway was completed in 1968．The line runs 1,462 km between China's two main cities and passes through five provinces and the city of Tianjin．

　　Since opening,it has been one of the busiest routes in our country．The Beijing-Shanghai route is now served by 10 trains a day,five of which are non-stop．The journey time is just under 12 hours．

　　Now trains are allowed to travel at 250 kph(kilo-metres per hour)and the journey time is only 10 hours．

　　With the sixth railway speedup,China has joined the ranks(行列)of countries with high-Speed rail services．Trains are able to run at speed of 200 kph on some 6,003 km of track(轨道),and on some sections,the highest speed can increase t0 250 kph．The 6,003 km of track serves both high-speed passenger trains and low-speed cargo(货物)trains．

　　Railway operators have to deal with the problem of the speed gap(差距)between the two kinds of trains to make sure they both run safely．

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　　Humans have always dreamed of finding a way to leave traffic jams(交通堵塞)behind．Well, dream no longer．The flying car and pod car(豆荚车)can help cut down on traffic jams．

　　The world’s“first flying car”, called the Terrafugia Transition, has made its first flight in the skies of the US．It can fly 640 km through the air without adding more gas, the car maker, Terrafugia Inc, says．

　　As a light airplane, it is not easy for the Terrafugia Transition to fly in poor weather．However, it has the advantage of being able to continue the journey by road if conditions take a turn for the worse．

　　This is the first proven flying car with foldable wings．These allow it to perfectly transfer from air to road．

　　However, there are a few problems．The car/plane, which is expected to go on sale as early as 2011, will cost about ＄194, 000(1.33 million yuan)．Drivers will also need a driver’s and pilot’s license．

　　For those afraid of heights, or who don’t want to fly, the pod car is a great way to travel．Imagine using a button to stop the small pod-shape car．The doors open, you climb into the passenger seat, and enter your personal number．Minutes later, the doors slide open and you have reached the place where you’re going．

　　Cities around the world are looking into pod-car systems, as pod cars do not need human drivers．They are designed for one person or small groups traveling together．Passengers simply type their place into the pod car’s computer and the pod car takes them directly there．

　　Because pod cars do not make unnecessary stops and use electricity, they save a lot of energy and do not pollute the air．Pod cars also provide passengers with faster service and more privacy than a subway or bus．

　　While flying cars and pod cars may be a dream available to a few, many humans are still dreaming bigger dreams, such as teleportation(瞬间位移术)．It is most widely found in works of science fiction．

　Telep ortation is a method of transportation, in which, objects or information are dematerialized(使消失), and then recreated in another place．Maybe one day, teleportation could become a reality and people could avoid traffic jams for ever!

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