题目内容
a kind of pollution.
When it comes to looking at the night sky, too much light makes it difficult for us to watch some of life's
most wonderful sights: stars, planets and even galaxies (星系).
According to scientific research, about 2, 500 stars can be seen by the human eye without using any
special equipment (设备). But because of light pollution, you can only see 200 to 300 stars from today's
countryside, and no more than ten stars from a city. In most big cities, people cannot see the sky filled with
stars like they did in their childhood.
Light pollution affects more than just our view of sky. Research shows that lots of nighttime light can
harm wildlife, too.
When birds fly to another place over cities, they sometimes get lost by the brightness and fly in circles
(圈) until they drop from tiredness. Sea turtles (海龟) need dark beaches for laying eggs, but they can't find
their ideal places because of those bright lights.
Too much light at night may even affect human health, but scientists are not sure of that. They are still
learning more.
In order to prevent things from going worse, governments and some organizations are working to reduce
light pollution. Many cities and towns have taken action to reduce the use of lights at night. Lights are used
only when and where they are truly needed. They also shine lights down at the ground instead of up into the
sky and use lower brightness levels.
Hopefully, in the near future, humans can enjoy the clear and beautiful sky again and all the wildlife will
live a peaceful and undisturbed life, too.
B. Because human health has been affected.
C. Because too much light is a waste of energy.
D. Because some of the wildlife can be harmed.
B. The reason why humans use too much light.
C. The ways that light pollution can be reduced.
D. The reason why fewer stars can be seen than before.
B. Humans want to do nothing to reduce light pollution.
C. Sea turtles always get lost and die from tiredness.
D. Something has been done to reduce light pollution.
阅读理解
High in the mountains, and deep in the forest, lives a lake with many plants and animals in and around her. The plants and animals have enough food and clean water to keep them healthy. The wind carries pure air, and the rain comes down clear and clean.
But recently, Lucy Lake and her friends haven’t been feeling very well. All the plants and animals get together to talk about the problem. “Why are we sick?” “What can we do?” ask all of them. No one has any answers.
Just then two hikers appear. The animals tell them about their problems. “Can you help us?” they ask. “Yes,” one hiker says. “I think it’s because of acid rain.”
“Acid rain comes from chemicals(化学物质) in the air. The pollution comes from factories, cars and trucks.”
“So, although I don’t want to, I help the pollution travel through the air!” says the wind. “And I carry it to the land!” cries the rain.
“If you can help us think of some solutions(解决方法), we will send a message to tell people how to clean up our environment,” one hiker says.
With the help of the plants and animals, the two hikers make a list of ideas for saving Lucy Lake and her friends.
Time passes, and the forest and lake begin to feel a little better.
The next time the hikers climb up the mountains to Lucy Lake, they smile at what they find. “We’re glad things have started to change,” one hiker says. “And we’re glad you helped us make a difference,” says the other.
1.The underlined word “pure” can be replaced by “____”.
A.polluted |
B.clean |
C.cold |
D.cool |
2.The two hikers are most probably ____.
A.scientists |
B.teachers |
C.doctors |
D.reporters |
3.____ have (has) nothing to do with the cause of acid rain.
A.The rain |
B.Human beings |
C.The wind |
D.The plants and animals |
4.The underlined word “you” refers to (指) ____.
A.Lucy Lake |
B.the plants and animals |
C.one of the two hikers |
D.the wind and the rain |
5.Which of the following is NOT true?
A.Acid rain is very harmful only to plants and animals. |
B.Human activities are the main cause of acid rain. |
C.Acid rain can make the living things in the environment get sick. |
D.We should clean up our environment to protect us against acid rain. |