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  3. Overhead bridges are found in many parts of Beijing, especially in places where traffic is very heavy and crossing the road is d

Overhead bridges are found in many parts of Beijing, especially in places where traffic is very heavy and crossing the road is d

admin2015-09-05  78
问题     Overhead bridges are found in many parts of Beijing, especially in places where traffic is very heavy and crossing the road is dangerous.
    The purpose of these bridges is to enable pedestrians to cross roads safely. Overhead bridges are used in very much the same way as zebra crossings. They are more efficient although less convenient because people have to climb up a long flight of steps. This is inconvenient especially to older people. When pedestrians use an overhead bridge, they do not hold up traffic. However, when they cross a busy road usinga zebra crossing, traffic is held up. This is why the government has built many overhead bridges to help pedestrians and to keep traffic moving at the same time.
    The government ofBeijing has spent a large amount of money on building these bridges. For their own safety, pedestrians should be encouraged to use them instead of risking their lives by dashing across the road. Old people, however, may find it a little difficult climbing up and down the steps, but it is still much safer than walking across the road with all the danger of moving traffic.
    Overhead bridges serve a very useful purpose. Pedestrians, both old and young, should make it a habit to use them. This will prevent unnecessary accidents and loss of life.
What is the advantage of overhead bridges mentioned in this passage?
选项 A、They are safer for pedestrians and can keep traffic moving at the same time
B、Pedestrians can climb up and have a view of the city
C、Taller trucks can pass under them
D、They are easier and more convenient for the pedestrians
答案A
解析 文章第一段提到北京城处处可见高架桥，由“…traffic is very heavy andcrossing the road is dangerous”以及第二段“thegovernment has built…．keep traffic moving…”可以得知建高架桥的主要目的在于一方面减轻交通压力，另一方面帮助行人安全过马路。故A符合题意。
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