Changes in the way people live bring about changes in the jobs that they do. More and more people live in towns and cities inst

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问题    Changes in the way people live bring about changes in the jobs that they do. More and
more people live in towns and cities instead on farms and in villages. Cities and states have
to provide services city people want, such like more police protection, more hospitals,
and more schools. This means that more policemen, more nurses and technicians, and more
teachers must be hired. Advances in technology has also changed people’s lives. Dishwashers
and washing machines do jobs that were once done by the hand. The widespread use of such
electrical appliances means that there is a need for servicemen to keep it running properly.
    People are earning higher wages and salaries. This leads changes in the way of life.
As income goes down, people may not want more food to eat or more clothes to wear. But
they may want more and better care from doctors, dentists and hospitals. They are likely to
travel more and to want more education. Nevertheless, many more jobs are available in these
services. The government also affects the kind of works people do. The governments of most
countries spend huge sums of money for international defense. They hire thousands of engineers,
scientists, clerks, typists and secretaries to work on the many different aspects of defence.
【M7】

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答案第9行的down→up。

解析 根据上下文句意,此处指的应该是工资上涨而不是下降。
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