题目内容
（请给出正确答案）
Light pollution occurs when______
A．artificial lights illuminate the night sky.
B．the moon lights up the night sky.
C．too many stars are visible in the night sky.
D．streetlights are turned off.
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更多“Light pollution occurs when___…”相关的问题
Air pollution is as damaging as light pollution．
A．Right
B．Wrong
C．Not mentioned
Light pollution threatens to prevent those wonderful sights _________being seen.
A、from
B、for
C、against
D、/
Which of the following statements is NOT related to light pollution？
A．A haze of light is formed from artificial lights such as streetlights and building lights.
B．Lights from different sources in the city stream into space and illuminate the night sky.
C．The night sky is illuminated by the lights from big glowing cities in the night.
D．Stargazing becomes difficult because there is a layer of haze in the air.
34 How does light pollution affect wildlife？
A Animals may go off course.
B It helps migrating birds find their homes.
C Animals are afraid to go out after sunset.
D It helps birds fall asleep.
32 Light pollution occurs when
A artificial lights illuminate the night sky.
B the moon lights up the night sky.
C too many stars are visible in the night sky
D streetlights are turned off.
A．Right
B．Wrong
C．Not mentioned
The big cities in China are also suffering from light pollution too．
A．Right
B．Wrong
C．Not mentioned
The idea of light pollution has【C5】______with the increase of【C6】______in cities. In many areas, this light makes it【C7】______to observe stars and planets in the night sky. In 1922, the International Dark-Sky Association formed. This organization wants to reduce light pollution in the【C8】______sky. It also【C9】______the effective use of electric lighting.
Light pollution is the【C10】______of wasted energy. Bright light that shines into the sky is not being used to provide light【C11】______it is needed on Earth.【C12】______designed【C13】______causes a great deal of light pollution. Lights that are brighter than【C14】______also cause light pollution.
Most people in America are【C15】______to find out that they are not able to see our own galaxy, The Milky Way, with their own eyes.【C16】______about three-fourths of Americans cannot see the Milky Way because of【C17】______light.
Objects in the night sky are【C18】______that provide everyone【C19】______wonder. But light pollution threatens to prevent those wonderful sights【C20】______being seen.
【C1】
A．So
B．But
C．And
D．Hence
How does light pollution affect wildlife？ Which of the following is NOT correct？
A．Animals may go off course due to the attraction of artificial lights.
B．Animals might be attracted by artificial lights m go into cities.
C．Artificial lights at night may make migrating birds lose their way.
D．Attracted by artificial lights, birds fly into lighted buildings.
Light pollution
We usually think of pollution as a harmful waste substance that threatens the air and water．But some people have become concerned about another kinds of pollution.It can be everywhere，depending oil the time of day．And it is not thought of as a substance．It is light．
The idea of light pollution has developed with the increase of lights in reties．In many areas，this light makes it difficult or impossible to observe stars and planets in the Hiight sky．In l988，the International Dark—Sky Associations formed．This organization wants to reduce light pollution in the night sky．It also urges the effective use of electric lighting．
There are a number of reasons why reducing light pollution is important．One has become clear at the Mount Wilson Obsmvatory near Los Angels，California．Mount Wilson Observatory was home to the largest telescopes in the world during the first half of the l900s．
During that period，Los Angeles grew to become one of America’s biggest cities。
Today，light from Los Angeles makes the night sky above Mount Wilson very bright．It is no longer all important research center because of light pollution．
Light pollution threatens to reduce the scientific value of research telescopes in other important observatories．They include Like Observatory near San Jose，California and Yorkers Observatory near Chicago，Illinois．
Light pollution is the result of wasted energy．Bright light，that shines into the sky is nol being used to provide light where．it is needed Oil 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 and an American environmental scientist created a world map of the night sky.
The map shows that North Ameriea，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，the Milky Way，with their own eyes。But about three—fourths of Americans cannot see the Milk),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。According to the passage，the idea of light pon
We usually think of pollution as a harmful waste substance that threatens the air and water．But some people have become concerned about allution”has come with the increase of lights in cities．
根据以上材料回答下面问题：
第 31 题 According to the passage，the idea of “light pollotion”has come with the increase of lights in cities．
A．Right
B．Wrong
C．Not mentioned
