阅读下面短文并回答问题，然后将答案写到答题卡指定的位置上（请注意问题后的词数要求）。
When young people in the United States gather for fun, there is a good chance that they will soon be dancing. If there are no musicians, they will play records. If there are no records, some one is certain to have a radio. One way or another there will be dancing.
The ways that boys and girls dance will often change every year or two. You may hear them say that the very latest steps are “in,’ while last year’s step are ‘out.’ Each boy and girl takes pride in learning newest things. They feel that this is important to remaining popular with their friends.
Years ago the dances of young people were not very different from those of their parents, but high school and college students of today have created their own music and have invented their own dances, thanks to people like Chubby Checker, the Beatles, and Elvis Presley. These musicians helped to make popular an exciting new kind of music that people began to dance to in a different way.
In the late 1950s Chubby Checker started a dance that he called the “twist.” The twist, like so many new dances, was lively, and people who performed it used a lot of energy. The word chubby means “a little bit fat,” which is why this singer and dancer called himself Chubby.
After demonstrating his new dance hundreds of times, however, Chubby was no longer chubby. This is one of the advantages. Even if older people do not like the new dances, they must agree that people get much more exercise from modern dances than they ever got from a waltz.
What are three ways to have music for dancing? (no more than 4 words)
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How often do ways of dancing to rock music change? (no more than 4 words)
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For what purpose do young people learn the newest dance? (no more than 6 words)
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Why did Chubby Checker become famous? (no more than 5 words)
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What is an advantage of modern dancing? (no more than 3 words)
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