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  3. As we have learned in our previous lectures, our country generally has an excellent system of transportation. There are efficien

As we have learned in our previous lectures, our country generally has an excellent system of transportation. There are efficien

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问题     As we have learned in our previous lectures, our country generally has an excellent system of transportation. There are efficient airlines, railway systems as well as motorway all across the country; however, if you have been to an airport recently, you’ ve probably noticed that it is becoming more and more crowded. Although airplanes provide the faster way to travel hundreds or thousands of miles, I don’ t think that our industry can do a good job of transporting people between cities that only a short distance apart. A person who travels between London and Birmingham, the so-called strip cities, may spend only relatively a short time in the air while spending several hours getting to and from the airport. This situation makes flying almost as time consuming as driving and of course more expensive, moreover, planes use a lot of fuel in taking off and landing down. So they are simply not fuel efficient on short flights. In my opinion, high speed train may be an answer to that problem. By the end of last century, a proposal for such a train was put forward, this new type of train is called maglev, meaning magnetic levitated train, the maglev train will not ride on the tracks, but will make use of the magnetic repulsion to glide or float above the tracks. Since the train and tracks do not touch and rub against each other, a lot of maintenance work can be saved. These trains will be able to travel at a speed about 300 miles per hour. Undoubtedly, at this speed, conventional trains will have trouble, staying on the tracks. At present, the operation of maglev trains is still on the experimental stage, for example, Germany and China. However, I’ m sure this new type of train on the horizon will revolutionize transportation of the 21st century, the way airplane did in the 20th century.
The speaker doesn’ t think airplanes can offer good service to passengers when______.
选项 A、The journey takes time between two nearby cities
B、The expense is higher than that of driving
C、The airports are becoming more and more crowded
D、The flights are fuel consuming
答案A
解析 文中第三、四句讲到作者认为在很近的两个城市间飞行并不能节省时间，而且造价高，耗能多，因此无法享受好的服务。因此选A。B、C、D项都是由A项引起的，都不是根本原因。
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