Those who have a passion for climbing high and difficult mountains are often looked upon with astonishment. Why are men and women willing to suffer cold and hardship, and to take risks on high mountains ______
A. Most young people enjoy some form of physical activity.
B. This astonishment is caused probably by the difference between mountaineering and other forms of activity to which men give their leisure.
C. The mountain climber knows that he may have to fight forces that are stronger and more powerful than man.
D. Those who climb mountains are free to use their own methods.
E. But it is no unusual for a man of fifty or sixty to climb the highest mountains in the Alps.
F. If we compare mountaineering and other more familiar sports, we might think that one big difference is that mountaineering is not a "team game".