从甲地到乙地，某人步行比乘公交车多用3.6小时，已知步行速度为每小时8千米，公交车的速度为每小时40千米，设甲乙两地相距x千米，则列方程为　____ ．

完形填空。

    It is a sunny Sunday morning. Lana and her mother are on a big bus. There are 1 people on it. Some 2 from America, and some 3 England and Canada. They are all 4 friends. They are going to the Great Wall.

     5 are two Chinese on the bus. 6 is a woman. She is 7 the bus. The other is a young man. He 8 good English. He is now talking 9 the Great Wall. The other people are all listening to him. They like the Great Wall. They want to see it 10.