大學英語四級新題型模擬訓練4

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四、改錯
    Most people work to earn a living and they
    produce goods and services. Goods are either
    agricultural (like maize) or manufactured (like
    cars). Services are such things like education, 1._________
    medicine, and commerce. These people provide 2.__________
    goods; some provide services. Other people provide
    both goods or services. For example, in the same 3.__________
    garage a man may buy a car or some service which
    helps him maintain his car.
    The work people do is called as economic 4.__________
    activity. All economic activities taken together make
    up the economic system of a town, a city, a country,
    or the world. Such economic system is the sum-total 5.__________
    of what people do and what they want. The work
    people do either provides what they need or provides
    the money with that they can buy essential 6.__________
    commodities. Of course, most people hope to have
    enough money to buy commodities and services which
    are essential but which provide some particular 7. __________
    personal satisfaction, such as toys for children, visits 8. __________
    the cinema, and books.
    The science of economics is basic upon the facts 9. __________
    of our everyday lives. Economists study our everyday
    lives and the general life of our communities in order
    to understand the whole economic system of which we
    are a part. They try to describe the facts of the
    economy in which we live, and to explain how it
    works. The economist methods should of course be 10. __________
    strictly objective and scientific. 來