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It is an unfortunate fact of today’s life that most people are growing up unable to see the stars. The prime night sky exists on
It is an unfortunate fact of today’s life that most people are growing up unable to see the stars. The prime night sky exists on
admin
2017-06-27
20
问题
It is an unfortunate fact of today’s life that most people are growing up unable to see the stars. The prime night sky exists only【C1】______pictures. This is true not only in cities and suburbs, but also in【C2】______areas. We have lost our view of the stars and【C3】______our nighttime environment as well.
Such a loss【C4】______be acceptable if light pollution were the inevitable price of progress,【C5】______it is not. Most sky glow is【C6】______. It comes mainly from lighting sources that do little to increase【C7】______safety, security or utility. They produce only glare,【C8】______over one billion dollars annually in the U. S. alone.
【C9】______science, the impact has been even more dramatic. Scientists require observations of extremely faint objects that can only be【C10】______with advanced devices at sites【C11】______of air pollution and urban sky glow. For example, some images of the objects can【C12】______information about faraway corners of the universe, helping us understand the way in【C13】______our world was actually formed.【C14】______, the light from these objects can be lost at the very end of its【C15】______in the glare of our own sky.
Reducing light pollution is not difficult. It【C16】______that public officials and citizens be【C17】______of the problem and act to counter it. As【C18】______, people can help reduce sky glow just by【C19】______lighting only when necessary.
The stars above us are a【C20】______heritage. We must do our best to preserve it.
【C4】
选项
A、should
B、may
C、might
D、will
答案
C
解析
本题考查的是情态动词用法。此句中的if是非真实条件句,是一种虚拟和假设,如果光污染是进步所必须付出的代价,那么这种损失或许可以接受,might符合题意,故选C。
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公共英语三级笔试题库公共英语(PETS)分类
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公共英语三级笔试
公共英语(PETS)
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