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What should people do when they have got the outline？
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听力原文： The farm economy of the United States has changed a lot in tile last seventy years. In the 1930s, 25 percent of the nation's population lived on farms (32) . Today less than one percent of Americans do.
Farm incomes have changed over the years too. For example, in 1933, people living and working on farms had much less money to spend than other Americans. At that time, farm families had about one-third the income of non-farmers after all necessary expenses had been paid. By the late 1970s, however, that difference had almost disappeared (33) .
In 2004, farmers had their best year ever. The United States Department of Agriculture says the average farm family earned about 81,000 dollars. That is more than the average American family, which earned about 60,000 dollars. Yet these numbers do not completely explain the situation for all farmer.. Those who have small farms often take other jobs to earn extra income. And farm earnings for large farms grew faster than for small ones (34) .
The Department of Labor measures the pay of industrial workers differently. It measures the average hourly and weekly pay for industrial workers. This is because factory workers are generally paid by the hour unlike farmers who earn income from their farm businesses. Industrial workers are about 23 percent of the labor force. But that number has been decreasing (35) . Most Americans have jobs that provide services. Professional technical and other services employ about 76 percent of the labor force.
(33)
Reading from a manuscript. is necessary when ______.
The difference between impromptu speech and the extemporaneous speech is ______.
It is impossible to find out exactly how many volunteers are at work today in the United States. Thirty-seven million or so are known to belong to【C1】______like the Pink Ladies, Travelers' Aid, or Big Brothers', but those who work【C2】______or in small informal groups cannot be【C3】______. The total number of men and women who give their time to help others appears to be between fifty and sixty-eight million.
They do almost anything: they sew, clean,【C4】______, paint, cook, repair things,【C5】______books for the blind,【C6】______sick children in hospitals, or【C7】______senior citizens who do not want to go out alone. They give their blood; they work in libraries and schools; they【C8】______documents for new citizens with a language problem or【C9】______money to support local symphony orchestras; they answer the telephone calls of the【C10】______who are thinking of killing themselves, and who need a friendly【C11】______.
Volunteers start community projects too small to attract the attention of organized agencies, or work at jobs【C12】______no funds are available. A(n)【C13】______of city folk will turn an empty【C14】______into a playground for the children of their neighborhood; others decide to repair and paint a few dilapidated houses in their street.【C15】______Women cook and【C16】______two hot meals a day to elderly people【C17】______alone, and too sick or too tired to prepare their own food.【C18】______group calls lonely old people once a day to chat a little and【C19】______if they are all right. Some college students teach English, mathematics, or drawing to the inmates of a local jail. Anywhere one looks, the【C20】______of volunteers is hard at work--not only in the United States, but in many other countries where "volunteerism" is spreading.
【C1】
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