题目

People aren’t walking any more—if they can figure out a way to avoid it. I felt superior about this matter until the other day I took my car to mail a small parcel. The journey is a matter of 281 steps. But I used the car. And I wasn’t in any hurry, either. I had merely become one more victim of a national sickness: motorosis. It is an illness to which I had thought myself immune(免疫的), for I was brought up in the tradition of going to places on my own two legs. At that time, we regarded 25 miles as a good day’s walk and the ability to cover such a distance in ten hours as把假分数化成带分数，再读一读．(填写带分数时，先写整数部分，再写分子，最后写分母) (1) (2) (3)