题目内容
听力原文： Each night we alternate between two kinds of sleep: active sleep and passive sleep. The passive sleep gives our body the rest that is needed, and prepares us for active sleep, in which dreaming takes place. And we arc beginning to understand the importance of the dream period in our sleep cycles.
In passive sleep the body is at rest. We move very little. And the brain becomes very inactive, ff a person continues to sleep, she or he enters anew period, a more active period. The body goes through several changes: the brain temperature rises, blood in the brain increases, the body becomes very still and the brain goes into active state. And as the brain goes active, the eyes begin to move rapidly. And that is the sign of another change---the person is dreaming. Throughout the night, people alternate between passive and active sleep. Doctors have studied the sleep cycle and have found that everyone dreams---in fact, that everyone needs to dream in order to stay healthy. It appears we need both kind of sleep. We need passive sleep in order to rest our bodies. We need active sleep in order to dream. And dreaming helps us to rest our minds,
What does not happen in the brain in the active sleep？
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Music comes in many forms; most countries have a style. of their own.【C1】______ the turn of the century when jazz was born, America had no prominent【C2】______ of its own. No one knows exactly when jazz was【C3】______ or by whom. But it began to be【C4】______ in the early 1900s. Jazz is America’s contribution to【C5】______ music. In contrast to classical music, which【C6】______ formal European traditions, jazz is spontaneous and free form. It bubbles with energy,【C7】______ the moods, interests, and emotions of the people. In the 1920s jazz【C8】______ like America, and【C9】______ it does today. The【C10】______ of this music are as interesting as the music【C11】______ American Negroes, or blacks, as they are called today, were the jazz【C12】______ . They were brought to Southern States【C13】______ slaves. They were sold to plantation owners and forced to work long【C14】 ______ When a Negro died his friend and relatives【C15】______ a procession to carry the body to the cemetery. In New Orleans, a band often accompanied the【C16】______ on the way to the cemetery the band played slow, solemn music suited to the occasion.【C17】______ on the way home the mood changed, Spirits lifted. Death had removed one of their【C18】______ , but the living were glad to be alive. The band played 【C19】V music, improvising on both the harmony and the melody of the tunes【C20】______ at the funeral. This music made everyone want to dance. It was an early farm of jazz.
【C1】
听力原文： Education is compulsory and free for every child in the United States. Most children start school by the age of six. They attend eight years of elementary school and four years of high school. The money for free public schools comes from taxes, and each state is responsible for its own educational system. State legislatures set the educational requirements but leave the management of the schools in the hands of the local communities. Most states require their children to go to school until a certain age. This age varies from 16 to 18 years according to the laws of the individual states for additional schools and school services. After graduation from high school, a student can start his higher education in a two-year college, a four-year college, a university, or a specialized professional school -- either public or private. Most colleges admit students on the basis of their high-school records. The cost of a college education is expensive in private universities, but it is much less in those supported by states and cities. Many students receive scholarships from the schools, the government, or private foundations and organizations. More than 50%of the college students work to help pay their college expenses.
Where does the money for public schools come from？
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