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

Overhead bridges are found in many parts of Singapore, especially in places where traffic is heavy and crossing the road is dang

admin2009-05-28  48
问题     Overhead bridges are found in many parts of Singapore, especially in places where traffic is heavy and crossing the road is dangerous.
    The purpose of these bridges is to enable people to cross roads safely. Overhead bridges are used in very much the same way as zebra crossing(斑马线). 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 people use an overhead bridge, they don’t hold up traffic. However, when they cross a busy road using a zebra crossing, traffic is held up. This is why the government has built up many overhead bridges to help people and to keep traffic moving at the same time.
    For their own safety, people should be encouraged to use them instead of risking their lives by dashing(闯) across the road. Old people, however, may find it a little difficult climbing up and down the steps, but it is still advisable for them to use overhead bridges.
    Overhead bridges serve a very useful purpose. This will prevent unnecessary accidents and loss of life.
选项 A、they don’t hold up traffic and they are safer
B、people can have a better view of the city
C、they are more convenient to use
D、they can save a lot of time and space
答案A
解析
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