According to the selection more than half of a person's body is composed of（）
A. voluntary muscles
B. involuntary muscles
C. muscle fibers
D. sensory nerves
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When did Muhammad Ali win his first Olympic gold medal
A. 1962.
B. 1960.
C. 1954.
D. 1964.
You'll run ______ trouble if you don't take care.
A. down
B. at
C. across
D. into
From the passage we can conclude that （）
Amy has never recovered from the shock
B. The accident didn't change Amy in the least
C. As her head was damaged, Amy didn't feel any guilt
D. Amy has lived quite a normal life, but she can never forget Jane
Which of the following is NOT true, according to the passage
A. Usually, alcoholics would like to stop drinking.
B. Usually, alcoholics find it hard to stop drinking.
C. Usually, alcoholics prefer not to stop drinking.
D. Alcoholics would only be forced to stop drinkin
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