问答题

结果，当新的技术突破到来时就出现了问题。比如，美国的工人与德国的工人相比，要花费更长时间来掌握怎样操作新型的、灵活的制造设备，那么这些设备在德国的有效成本就比美国低：设备的正常运转需要更长时问，需要广泛的再培训，这会提高成本并产生瓶颈，限制新设备生产的速度。

【参考答案】

As a result， problems emerge when new breakthrough technolog......

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单项选择题

Which of the following remains a unique feature of the English countryside

A．Narrow streets lined with pink or white houses.
B．Rolling hills with pretty farm buildings.
C．Cottages with thatched roofs.
D．Churches with cottages around them.

问答题

Examples of benefits or costs of the current concentration wave are scanty. Yet it is hard to imagine that the merger of a few oil firms today could recreate the same threats to competition that were feared nearly a century ago in the U. S. , when the Standard Oil trust was broken up. The mergers of telecom companies, such as WorldCom, hardly seem to bring higher prices for consumers or a reduction in the pace of technical progress．On the contrary，the price of communications is coming down fast．In cars，too，concentration is increasing--witness Daimler and Chrysler，Renault and Nissan—but it does not appear that consumers are being hurt．

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