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  3. Snow Ranger The two things—snow and mountains—which are needed for a ski area, are the two things that cause avalanches, lar

Snow Ranger The two things—snow and mountains—which are needed for a ski area, are the two things that cause avalanches, lar

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问题                             Snow Ranger
    The two things—snow and mountains—which are needed for a ski area, are the two things that cause avalanches, large mass of snow and ice crushing down the side of a mountain—often called White Death.
    It was the threat of the avalanche and its record as a killer of man in the western mountains that created the snow ranger. He first started on avalanche control work in the winter of 1937 at Alta, Utah, in Wasatch National Forest.
    This mountain valley was becoming well known to skiers. It. was dangerous. In fact, more than 120 persons had lost their lives in 1936 and another 200 died in 1937 as a result of avalanches before it became a major ski area.
    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.
A snow ranger himself must be ______.
选项 A、a college graduate
B、a physicist
C、a geologist
D、a mountaineer
答案D
解析 …雪地管理员’必须是什么样的人?”文章中的第5五段的段首句说“要成为雪地管理员需要很多的条件”，所以判断答案相关句应在该段中。该段说“雪地管理员应是优秀的登山运动员”，所以D是答案。
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