题目内容
16. Many technological inventions worked their way gradually into people’s lives and became accepted as a necessity.
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17.One may suffer a business loss if he makes his customer call repeatedly without the choice of leaving a message on an answering machine.
18. Owning a car in the countryside or a computer in this modern world may not be considered conspicuous consumption.
19. New items, when first introduced, could be dismissed by some people who did not consider them useful.
20. A society’s way of life which requires physical work may depend in part on what and how much others consume.
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