阅读理解　　D 　　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 ay 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(), for I was bred in the tradition of going to places on my own two legs. At that time, we regarded 25 miles as good day’s walk and the ability to cover such a distance in ten hours as sign of strength and skill. It did not occur to us that walking was a hardship. And the effect was lasting. When I was 45 years old I raced –and beat—a teenage football player the 168 steps up the Stature of Liberty. 　　Such enterprises today are regarded by many middle-aged persons as bad for the heart. But a well-known British physician, Sir Adolphe Abrhams, pointed out recently that hearts and bodies need proper…… is more likely to have illnesses than one who exercises regularly. And wlaking is an ideal form of exercise--- the most familiar and natural of all. 　　It was Henry Thoreau who showed mankind the richness of going on foot. The man walking can learn the trees, flower, insects, birds and animals, the significance of seasons, the very feel of himself as a living creature in a living world, He cannot learn in a car. 　　The car is a convenient means of transport, but we have made it our way of life. Many people don’t dare to approach Nature any more; to them the world they were born to enjoy is all threat. To them security is a steel river thundering on a concrete road. And much of their thinking takes place while waiting for the traffic light to turn green. 　　I say that the green of forests is the mind’s best light. And none but the man on foot can evaluate what is basic and everlasting.

单选题 What is the national sickness?

【正确答案】 C

【答案解析】推理题。根据文章第二段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.可知有一次只要走281步的路程，我却开着汽车。说明我患了一种national sickness: motorosis。也就是开车太多。故C正确。

单选题 What was life like when the author was young?

【正确答案】 A

【答案解析】推理题。根据文章第三段2,3行At that time, we regarded 25 miles as good day’s walk and the ability to cover such a distance in ten hours as sign of strength and skill. It did not occur to us that walking was a hardship.可知之前我们认为一天走25英里是很好的，我从来都没有想过步行会成为一种困难。说明在作者年轻的时候，人们经常步行。故A正确。

单选题 The author mentions Henry Thoreau to prove that

【正确答案】 B

【答案解析】推理题。根据文章第五段第一句It was Henry Thoreau who showed mankind the richness of going on foot.可知正是他向我们展示了步行的好处，如The man walking can learn the trees, flower, insects, birds and animals, the significance of seasons, the very feel of himself as a living creature in a living world可以了解到树，花昆虫等等自然的知识。也就是说可以丰富我们的生活。故B正确。