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Modern science fiction movies are often known for their breathtaking special Line effects. These effects can show us a glimpse
Modern science fiction movies are often known for their breathtaking special Line effects. These effects can show us a glimpse
admin
2012-01-15
33
问题
Modern science fiction movies are often known for their breathtaking special
Line effects. These effects can show us a glimpse of the future, and frequently have
tremendous dramatic force. Sometimes, however, special effects can leave the
science behind to focus only on the fiction. One of the worst offenders is a film’s
(5) depiction of explosions in outer space.
On the Earth, explosions occur in some form of matter, usually air or water.
The change in energy level in the matter creates the energy differential known as
a shock wave. The wave is what creates the characteristic "boom" of an explosion.
Since there is very little matter in outer space, the energy transfer never takes
(10) place. Consequently, there is no sound. Further, because air and water are not
perfect conduits for energy, they measurably slow the travel of the explosive
force. This allows the explosion to unfold in relatively slow motion, which
renders it visible to the eye. In space, there is nothing to slow the energy, which
would disperse almost immediately. The effect for an observer would be a bright
(15) flash, gone almost as soon as it appeared, and nothing like the great billowing
space clouds shown in the movies, suggesting that reality is insufficiently
dramatic for cinematic representation.
According to the passage, which of the following is true about explosions in space? I. A lack of matter in space allows the energy from an explosion to travel very quickly. II. An explosion in space would be visible as a flash of bright light. III. Shock waves created by an explosion in space would cause an audible "boom."
选项
A、I only
B、II only
C、I and II only
D、II and HI only
E、I, II, and III
答案
C
解析
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本试题收录于:
GRE VERBAL题库GRE分类
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GRE VERBAL
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