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　　Except for the Indians, the earliest backpackers in America were frontiersmen, who roamed the wilderness looking either for necessities such as food and water or for sources of wealth such as fur and gold. For them backpacking was a way of survival or a means of achieving what one day would be called the “American Dream”. Today, however, many people enjoy backpacking as a recreational activity. Shouldering a pack and leaving behind the world of telephone, television and traffic promise an exciting experience. Testing one stamina (耐力) and skills are challenging a sense of one place in the natural world can be rewarding .Moreover, backpacking is an activity that can last any length for time and can be enjoyed alone or with friends. Then too, a backpacking trip may be organized within a day or two. The backpacker and his friends have only to decide on their destination and then organize the all-important kit, whose contents they must depend on throughout their trip. A map, a compass, a flashlight, along with first equipment, food, and extra clothing can be rounded up without much difficulty. Once the backpackers have left word about where they go in a note on the refrigerator door or in a message on an answering machine, they can look forward to an adventure that will lift the spirit and nourish the soul. Their outing will enable them to return in a short time to the age of technology with the courage and independence of Natty Bumppo, who did indeed belong to the age of the frontier.
　　6. The passage mainly discusses_________ .
　　A. the early backpackersB. backpacking as a perfect form of recreation
　　C. how backpacking startedD. why people of today are interested in backpacking
　　7.The earliest backpackers were _____________.
　　A. frontiersmenB. IndiansC. fur traders D. gold miners
　　8. Early backpackers who roamed about in wilderness were interested in finding________ .
　　A. means to realize the American dream B. recreation in life
　　C. relief from the stress of everyday life D. daily necessities
　　9. One of the advantages of backpacking is that ___________.
　　A. it can help people to establish a link with nature
　　B. it is a group activity and can cure a person loneliness
　　C. it is not so challenging as other activities
　　D. it does not require people to decide on a destination