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阅读下列短文,根据所读内容在文章后的表格中填人 恰当的单词。
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The farm economy of the United States has changed a lot in the last seventy years. In the 1930s,
twenty-five percent of the nation's population lived on farms. 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. In 2004,farmers had their best year ever. The average farm family
earned about eighty-one thousand dollars. That was more than the average American family, which
earned about sixty thousand dollars.
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. Generally, the average hourly pay for
all
industrial workers is about sixteen dollars. And the average weekly pay,about five hundred fifty dollars.
Industrial workers were about twenty-three percent of the labor force in the 1970s. But that number
has been decreasing. Most Americans have jobs that provide services. Professional,technical and other
services employ about eighty-six percent of the labor force.
