听力原文: A university professor recently made several experiments with different animals to find out which was the most intelligent.
He found out that the monkey was more intelligent than other animals.
In one experiment the professor put a monkey in a room where there are several small boxes. Some boxes were inside other boxes. One small box had some food inside of it. The professor wanted to watch the monkey and to find out how long it would take the monkey to find the food. The professor left the room. He waited a few minutes outside the door. Then he knelt down and put his eye to the keyhole. What did he see? To his surprise he found himself looking directly into the eye of the monkey. The monkey was looking at the professor through the keyhole on the other side of the door.
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A. To find out how clever monkeys were.
B. To test the intelligence of different animals.
C. To compare the difference between man and the monkey.
D. To find out how monkeys search for food.
These are designed to help【C1】______their skills, abilities and appreciation of life; to give them a chance to practice leadership and【C2】______responsibilities;【C3】______school courses; and to provide additional outlets and stimuli. There is often a【C4】______of activities from which to choose, such as nature clubs, musical organizations, science clubs, art and drama groups, or language clubs. A【C5】______selection of sport activities is always available.【C6】______every school has a student-run newspaper; often a photographic darkroom is also【C7】______. Some of these activities take place during the school day, but【C8】______are held after classes are over.【C9】______they are optional they【C10】______a part of the American educational experience. Parents encourage their children to participate in those programs that【C11】______suit their own special talents and interests. Much is learned during these off-duty hours, especially in【C12】______of human "give-and-take". Americans believe this【C13】______human relationships, social skills, and a well-trained body,【C14】______intellectual development. Both【C15】______and college admissions officers in the United States carefully consider the extracurricular activities【C16】______students have participated, both during their free time after school and also during the long holidays. These indicate to them【C17】______of a young person's leadership potential, enthusiasm, creativity,【C18】______of interest, vitality and personality. They weigh these qualities, together with the academic record, in order to【C19】______a student's intelligence, perseverance, and ability to use what he knows,【C20】______merely repeating it by rote on examination papers.
【C1】
A. broaden
B. extend
C. stretch
D. concentrate