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
E. Proposing an innovative approach to business planning
According to the passage, which of the following is an accurate statement concerning meteor streams？
A. Meteor streams and comets start out with smiliar orbits, but only those of meteor streams are perturbed by planetary gravittion.
B. Meteor streams grow as dust particles are attracted by the gravitational fields of comets.
C. Meteor streams are composed of dust particles derived from comets.
D. Comets may be composed of several kinds of materials, while meteor streams consitst only of large dust particles.
E. Once formed, meteor streams hasten the further disintegration of comets.
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