[单项选择]In many U.S. cities thousands of young people are developing their minds as well as their bodies by learning karate. In the United States, karate is currently taught in more than fifty special schools, and in an increasing number of high schools and colleges.
Karate is a science of unarmed self-defense and counterattack. It is a sort of "weapon in an empty hand". In fact, karate means "empty hands" in Japanese. A highly skilled practitioner of karate, called a "karateka", uses his hands, fists, fingers, elbows, feet, and shrill yells as a weapon to ward off his assailant’s attack. Karate requires a great deal of coordination and long practice to perfect the blocks, strikes, and light taps that are used for self- defense.
Beginners learn to squat, sit up, pivot and stretch, jump and kick waist- high. Karate blows are so dangerous that trainees practice them without bodily contact with an opponent. They are able to smash boards and bricks with a clenched fist or the edge of the
A. reduces the fear of weapons.
B. was created by the Chinese,
C. is quick and easy to learn.
D. does not rely on the use of weapons.

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