问题
填空题
写出一个比-2大的负数：（ ）。
答案
-1（答案不唯一）
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写出一个比-2大的负数：（ ）。
-1（答案不唯一）
Overhead bridges can be seen in many Parts of Singapore，in the places where traffic is very 41 and crossing the road is not safe. These bridges can help people cross roads 42 . Overhead bridges are used in very much the same way 43 zebra crossings. They are more efficient(效率高的)，thou 44 convenient(方便的)because people have to climb up a lot of steps．This is inconvenient to the old. When people use an overhead bridge，they do not 45 traffic. But when they cross a busy road using a zebra crossing, traffic is kept back. This is 46 the government has built many overhead bridges to help people and keep traffic moving at the same time. The government of Singapore has spent a lot of money 47 these bridges. For their own safety, people should be advised to use them instead of rushing across the 48 . Old people may find it a little difficult to climb up and 49 the steps, but it is still much safer than walking across the road with all the moving traffic. Overhead bridges are very 50 . People，both old and young，should always use them. This will stop accidents from happening.
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