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发布时间：2006-06-23 21:19     点击：

　　Thus，development of Alta and other major ski resorts in the west was dependent upon controlling the avalanche. The Forest Service set out to do it，and did，with its corps of snow rangers.

　　It takes many things to make a snow ranger. The snow ranger must be in excellent physical condition. He must be a good skier and a skilled mountain climber He should have at least a high school education，and the more college courses in geology，physics，and related fields he has，the better.

　　He studies snow，terrain，wind，and weather. He learns the conditions that produce avalanches. He learns to forecast avalanches and to bring them roaring on down the mountainsides to reduce their killing strength.The snow ranger learns to do this by using artillery，by blasting with TNT，and by the difficult and skillful art of skiing avalanches down.

　　The snow ranger，dressed in a green parka which has a bright yellow shoulder patch，means safety for people on ski slopes. He pulls the trigger on a 75 mm. Recoilless rifle，skis waist deep in powder testing snow stability，or talks with the ski area's operator as he goes about his work to protect the public from the hazards of deep snow on steep mountain slopes.

　　1. The snow rangers are employees of

　　A） the Forest Service.

　　B） the Resource Bureau.

　　C） the Tourist Board.

　　D） the Sports Bureau.

　　2.A snow ranger himself must be

　　A） a college graduate.

　　B） a physicist.

　　C） a geologist.

　　D） a mountaineer.

　　3. A snow ranger uses very powerful guns

　　A） to warn skiers of an approaching avalanche.

　　B） to signal for help in an emergency.

　　C） to create an avalanche.

　　D） to communicate with the ski area operator.

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