题目内容
阅读理解
阅读下面短文，从每题所给的四个选项中，选出最佳选项。
The idea of light pollution has developed with the increase of lights in cities. In many areas, this light makes it difficult or impossible to observe stars and planets in the night sky.
There are a number of reasons why light pollution is important. One has become clear at the Mount Wilson Observatory(天文台) near Los Angeles, California. Today, light from Los Angeles makes the night sky above Mount Wilson very bright. It is no longer an important research center because of light pollution.
Light pollution threatens(威胁) to reduce the scientific value of research telescopes in other important ob servatories. They include Lick Observatory near San Jose, California and Yerkes Observatory near Chicago, Illinois.
Light pollution is the result of wasted energy. Bright light that shines into the sky is not being used to provide light where it is needed on Earth. Poorly designed lighting causes a great deal of light pollution. Lights that are brighter than necessary also cause light pollution.
Recently, two Italian astronomers(天文学家) and an American environmental scientist created a world map of the night sky. The map shows that North America, Western Europe and Japan have the greatest amount of light pollution.
Most people in America are surprised to find out that they are able to see our own galaxy(星系), the Milky Way(银河系), with their own eyes. But about three-fourth of Americans cannot see the Millky Way because of man-made light.
Objects in the night sky are resources that provide everyone with wonder. But light pollution threatens to prevent those wonderful sights from being seen.
1．Light pollution usually occurs ________.
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A．in cities
B．in the country
C．in wild areas
D．in developing countries
2．People can not see the stars in the sky because of ________.
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3．The victim(受害者) affected by the light pollution is ________.
[ ]
4．There is less light pollution in ________.
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解析：
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1．A 从第一段可以看出答案。 2．C 从第一段，特别是：It is no longer an important research center because of light pollution.可知答案。 3．D 从整个文章及第三段所列举的例子可看出“光污染的最大受害者为天文台”。 4．D 从倒数第三段科学家绘制的夜空图表明北美、西欧和日本的光污染最严重，由此可知在美国、加拿大、法国和埃及这四个国家中，应是埃及光污染最轻。 |
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