15. When half the population goes to college， one cannot expect the colleges to maintain the same standards as in countries where only the elite attend.
16. Just as not every Japanese is hardworking and deferential to superiors (长者、上司)， not every Chinese is devoted to family， not every American is ambitious or patriotic – or even unsophisticated.
17. No one could seriously think that anyone who grows up poor， lives in a bad neighborhood， and attends an inferior school has an opportunity equal to that of someone more favored.
18. Americans may not have achieved equality， but at least they aspire to it， which is more than many other nations can claim.
19. 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.
21. 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.
22. 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).
23. 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.
24. A monopoly occurs when one company alone offers a particular food or service and therefore controls the market and price for it.
25. 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)
26. All these changes in China’s economic life have brought changes in China’s social and cultural life as well， many of which unwanted.
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