2. 外语
  3. Market prices may move up or down (or remain the same)in response to a host of factors causing shifts in supply (the whole suppl

Market prices may move up or down (or remain the same)in response to a host of factors causing shifts in supply (the whole suppl

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问题     Market prices may move up or down (or remain the same)in response to a host of factors causing shifts in supply (the whole supply curve) or demand (the whole demand curve) or both together.
    Bad weather makes prices go up--not just the prices of agricultural products, but of a great many other goods ranging from steel to nightgowns--because of interruptions in production, breakdowns in transportation, power failures, etc.
    Changes in technology cause shifts in supply curves; a more efficient way of making  transistors bring down the prices of calculators, computers, radios, television sets, record players, recorders. Increases in the scale of production, as we have seen, often bring down certain production prices.
    Shrinking. oil and mineral reserves contract supply, and prices move up. "Diseconomies" resulting from shrinking scales of production, as when the market for handmade pocket books, horse-drawn carriage, grandfather clocks, custom tailoring, and handmade furniture contracts, push up the price of such products not only absolutely, but relatively far above what they were in the old days, when skilled labor was cheaper and more abundant.
With which of the following topics is the author primarily concerned?
选项 A、The effects of climate on the economy.
B、The relation between market prices and technological change.
C、The effect of shifts in supply and demand on market prices.
D、The increasing cost of skilled labor.
答案C
解析 主旨题。全文讲述了影响供求关系的因素，如天气、技术变化和资源储备降低等，均能导致市场价格的波动。
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大学英语四级

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