Passage Two  Except for the Indians，the earliestbackpackers in America were frontiersmen, who roamed the wilderness lookingeither for necessities such as food and water or for sources of wealth such asfur and gold. For the

Passage Two  Except for the Indians，the earliestbackpackers in America were frontiersmen, who roamed the wilderness lookingeither for necessities such as food and water or for sources of wealth such asfur and gold. For them backpacking was a way of survival or a means ofachieving what one day would be called the“American Dream”.  Today，however, many people enjoy backpacking asa recreational activity. Shouldering a pack and leaving behind the world oftelephone, television, and traffic promise an exciting experience. Testingone’s stamina (耐力）and skills is challenging，and recapturing a sense of one’s place in the natural world can berewarding. Moreover, backpacking is an activity that can last any length fortime and can be enjoyed alone or with friends. Then too, a backpacking trip maybe organized within a day or two. The backpacker and his friends have only todecide on their destination and then organize the all-important kit, whosecontents they must depend on throughout their trip. A map, compass，a flashlight, along with first aid equipment, food, and extraclothing can be rounded up without much difficulty. Once the backpackers haveleft word about where they go in a note on the refrigerator door or in amessage on an answering machine, they can look forward to an adventure thatwill lift the spirit and nourish the soul. Their outing will enable them toreturn in a short time to the age of technology with the courage and independenceof Natty Bumppo, who did indeed belong to the age of the frontier. 
The earliest backpackers were____.()

A.native Americans

B.Indians

C.fur traders

D.gold miners

正确答案是B