In many countries, when jobs become available for young people in distant cities, when television begins to dominate home life, when ready - made foods appear in the markets, the culture appears more “American” - although the resemblance could be entirely superficial.

　　Someone who looks around or down appears shifty (不可靠的)to Americans, although in fact one doesn't stare continuously at the other person, but glances elsewhere every few seconds.

　　When the demand for something is greater than its supply, producers and suppliers will sense the possibility of making a profit - the excess of revenues over expenses is the profit.

　　As the case illustrates, competition takes four general forms: pure competition, monopoly, monopolistic competition, and oligopoly(少数制造商对市场的控制).

　　The classic example of pure competition occurs with a commodity, like wheat or corn, that has so many producers that no one of them can control its selling price.

　　A monopoly occurs when one company alone offers a particular food or service and therefore controls the market and price for it.

　　Private restaurants serve gourmet food for $70 per person; incentives boosted agricultural production 25 percent and industrial output 80 percent in just three years; farmers are encouraged to raise as much as they can on their own plots, and some become almost rich in the process.(注意本句中分号的使用)

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