单项选择题

The passage is primarily concerned with which of the following

A．Evaluating two competing technologies
B．Tracing the impact of a new technology by narrating a sequence of events
C．Reinterpreting an event from contemporary business history
D．Illustrating a business strategy by means of a case history

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单项选择题

The author implies that one way that VHS producers won control over the VCR market was by

A．carefully restricting access to VCR technology
B．giving up a slight early lead in VCR sales in order to improve long-term prospects
C．retaining a strict monopoly on the production of prerecorded videotapes
D．sharing control of the marketing of VHS-format VCR's

单项选择题

The passage suggests which of the following about the use of temporary employment by firms during the 1980's

A．It enabled firms to deal with fluctuating product demand far more efficiently than they before the 1980's.
B．It increased as a result of increased participation in the workforce by certain demograp groups.
C．It was discouraged by government-mandated policies.
D．It increased partly as a result of workers' reduced ability to control the terms of their employment.