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根据短文内容及首字母填空。      Overhead bridges can

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根据短文内容及首字母填空。
     Overhead bridges can be seen in many parts of Singapore, in the places where traffic is very h  1   and
crossing the road is not safe. These bridges can help people cross roads s  2 . Overhead bridges are used
in very much the same way as zebra crossings (斑马线). They are more efficient (效率高的), t  3   less
convenient (方便的) because people have to climb up a lot of steps. This is inconvenient to the old. When
people u  4   an overhead bridge, they do not hold up (阻挡) traffic. But when they cross a busy road using
a zebra crossing, traffic is held up. This is w  5    the government (政府) has built many overhead bridges
to help people and k  6   traffic moving at the same time. The government of Singapore has s  7   a lot of
money building these bridges. For their own safety, people should be advised to use them instead of rushing
across the road. Old people may find it a little  d  8   climbing up and down the steps, but it is still much
safer than walking across the road w  9  all the moving traffic. Overhead bridges are very useful. People,
both old and young, should always use them. This will stop accidents from h  10  .
1. heavy 2. safely 3. though 4. use 5. why
6. keep 7. spent 8. difficult 9. with 10. happening