抗洪指挥部的一位驾驶员接到一个防洪的紧急任务，要在限定的时间内把一批抗洪物质从物资局仓库运到水库．这辆车如果按每小时30千米的速度行驶，在限定的时间内赶到水库，还差3千米，他决定以每小时40千米的速度前进，结果比限定时间早到18分钟．限定时间是几小时物资局仓库离水库有多远？
设限定时间是x小时，物资局仓库离水库y千米．
则
，30x=y-3 40(x-
)=y18 60
解得
．x=1.5 y=48
答：限定时间是1.5小时，物资局仓库离水库有48千米．
| 完形填空。 | ||||
| I came to India about ten years ago to find a village in which I could live and write. However, it was many months before I 1 down happily in this Himalayan village. I 2 alot oftimelooking for the 3 village. Yet no such thing exists. 4 were quite different. But the villages I stayed in had much in 5 -dirt,poverty, no 6 . Often the villagers themselves were 7 about why I had come. I had 8 my work as a political newspaperwriter 9 my ideas had changed. I had 10 to believe that what was happening in the 11 World was more important than anything else. But to understand how three quaqters ofthe 12 peoplelive,and how their 13 might affect ours,lfelt that I first had to try and 14 their way of life. 15 I chose a mountain village because it was a little 16 than those in the plains. I took the bus from town along a bumpy(崎岖) road. Then came a 17 down a steep path to the river. After that I began the climb into the hills. WheneverI stopped to 18 my breath, I saw a beautiful 19 . After several hours' walk the 20 came into sight. | ||||
|