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增大字体作者：本站收集整理来源：本站收集整理发布时间：2010-11-11 08:00:20

，　6　 experienced climber and guide，was lost near the top.These two men had something in common：they were both guides who took ‘tours’of less experienced climbers up the mountain.

There is a lot of that can go wrong in an action to reach the top of Mt.Qomolangma：a 　7　 change in weather conditions or a wrong turning.Planes will only be sent to rescue if they 　8　in advance.In spite of all these，there is a business in leading guided tours to the top.　9　mountain climbers can now pay $64,000 or more to achieve their aim.