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All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit d
All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit d
admin
2012-11-20
40
问题
All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.
Perhaps the best way to think of our present situation is to imagine a train coming into a switch yard(调车场). All of the switches are set before the train arrives, so that its path is completely determined. Some Switches we can see, others we cannot. There is no ambiguity (不明确) if we can see the setting of a switch; we can say with confidence that some possible futures will not materialize (实现) and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the en tire subsequent course of events.
When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.
Which of the following statements best describes the organization of the passage?
选项
A、A statement illustrated by an analogy.
B、A hypothesis supported by documentation.
C、A comparison of two contrasting theories.
D、A critical analysis of a common assumption.
答案
A
解析
作者开始陈述自己的看法,进而用类此的方法讲明自己的观点。
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