1.A recent poll found that over 80 percent of the residents of Nalmed Province favored a massive expansion of the commuter rail system as a means of significantly easing congestion on the province’s highways and were willing to help pay for the expansion through an increase in their taxes. Nevertheless, the poll results indicate that expansion of the rail system, if successfully completed, would be unlikely to achieve its goal of easing congestion, because . A. most of people in favor of expanding the rail system reported less congestion during their highway commute as the primary benefit they would experience. B. of the less than 20 percent of residents not counted as favoring the expansion, about half claimed to have no opinion one way or the other. C. the twice-daily periods of peak congestion caused by people commuting in cars have grown from about an hour each to almost two and a half hours each in the past 20 years. D. expanding the commuter rail system will require the construction of dozens of miles of new railroads. E. the proposed expansion to the commuter rail system will make it possible for some people who both live and work at suburban locations to commute by rail.
答案是A，不知道是怎么解释的？？
2.Although the number of large artificial satellites orbiting the Earth is small compared to the number of small pieces of debris in orbit, the large satellites interfere more seriously with telescope observations because of the strong reflections they produce. Because many of those large satellites have ceased to function, the proposal recently been made to eliminate interference from nonfunctioning satellites by exploding them in space. This proposal, however, is ill conceived, since .
A. the only way to make telescope observations without any interference from debris in orbit is to use telescopes launched into extremely high orbits around the Earth B. a greatly increased number of small particles in Earth’s orbit would result in a blanket of reflections that would make certain valuable telescope observations impossible
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发表于 2010-4-27 11:29:53
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