内容正文:
Unit 4 The Earth
Section 4 同步练
班级:________ 姓名:________ 得分:________
一、选词填空(共 10 小题,每小题 2 分,共 20 分)
从方框中选择合适的单词或短语,并用其适当形式填空,每词限用一次。
sandstorm, blow away, generation, hunt, solution, reserve, forest, survive, produce, protect
1. A terrible ________ hit the city yesterday, making the sky yellow.
2. The strong wind ________ the tents during the night.
3. My family has lived in this town for three ________.
4. Some people still ________ animals illegally for their fur.
5. Scientists are trying to find a ________ to the pollution problem.
6. Sihanba is now an important national nature ________ in China.
7. The workers planted millions of trees to turn the desert into a ________.
8. All living things need air and water to ________.
9. Windmills can ________ clean electricity for us.
10. The government is taking action to ________ the endangered animals.
二、用所给单词的适当形式填空(共 10 小题,每小题 2 分,共 20 分)
1. Three ________ (generation) of workers have worked in Sihanba.
2. The cold and dry weather made their work very ________ (difficulty).
3. The wind ________ (blow) away many young trees last year.
4. They ________ (plant) millions of trees since 1962.
5. The forest ________ (help) provide clean water for the capital.
6. In the early 1960s, scientists ________ (travel) to Sihanba to find a way.
7. It got as cold as -40°C in ________ (winter) there.
8. Thanks to their hard work, Sihanba is ________ (green) again.
9. The wind ________ (move) clouds across the sky.
10. People can use wind ________ (produce) clean energy.
三、阅读理解 A(共 4 小题,每小题 5 分,共 20 分)
阅读下面短文,选择最佳答案。
Saihanba is a famous forest park in northern Hebei. It is about 400 km away from Beijing. Hundreds of years ago, emperors often went there to hunt. But in the 1800s, many things changed. Forest fires, wars and people cutting down trees turned Saihanba into a desert.
When the forest disappeared, terrible sandstorms began to hit Beijing. In the early 1960s, scientists went to Saihanba to find a way to solve the problem. They found an old tree in the desert and thought, “We can still plant trees here.” In 1962, the first tree planters arrived. The cold, dry weather and strong winds made their work very hard. Many young trees were blown away, and winter temperatures could drop to -40°C.
Three generations of workers kept working hard. Today, Saihanba is the world’s largest man-made forest. There are hundreds of millions of trees there. The forest now provides clean water for Beijing, and there are fewer sandstorms in the area. In 2017, the Saihanba Afforestation Community even won the Champions of the Earth award from the UN Environment Programme.
1. Why did Saihanba become a desert?
A. No one lived there anymore.
B. Forest fires, wars and tree-cutting destroyed the trees.
C. The weather became too hot.
D. Too many animals ate all the plants.
2. What problem did the desert cause for Beijing?
A. No clean water to drink.
B. No trees to build houses.
C. Terrible sandstorms.
D. No place to hunt.
3. When did the first tree planters arrive in Saihanba?
A. In the 1800s
B. In the early 1960s
C. In 1962
D. In 2017
4. What is the main benefit of the Saihanba forest today?
A. It brings more tourists to Hebei.
B. It provides clean water and reduces sandstorms.
C. It makes the weather warmer in winter.
D. It is the only desert in China.
四、完形填空(共 10 小题,每小题 2 分,共 20 分)
阅读下面短文,掌握其大意,然后从各题所给的 A、B、C、D 四个选项中选出最佳选项。
Forests are very important to the Earth. They provide homes for many animals, keep the air clean, and stop sandstorms. But many forests are in 1________ today. People cut down too many trees, and forest fires also destroy large areas of forests.
Saihanba is a great 2________ of how people can bring forests back. Hundreds of years ago, it was a beautiful forest. But then wars, fires and people cutting down trees turned it into a 3________. When the forest was gone, terrible sandstorms started to hit Beijing.
In the early 1960s, scientists came to Saihanba to find a way to 4________ the problem. They found an old tree and knew it was still possible to grow trees there. In 1962, the first group of tree planters 5________. The work was very 6________. The weather was cold and dry, and strong winds often 7________ the young trees. Winter temperatures dropped to -40°C, 8________ the workers never gave up.
Three generations of workers continued the work. They 9________ millions of trees, one by one. Today, Saihanba is green again. It is the world’s largest man-made forest. Their hard work has changed the desert into a forest. It shows that if we work together, we can make a big 10________ for the Earth.
1. A. danger B. safety C. peace D. order
2. A. problem B. example C. lesson D. story
3. A. forest B. farm C. desert D. lake
4. A. solve B. make C. see D. start
5. A. left B. arrived C. worked D. grew
6. A. easy B. boring C. difficult D. interesting
7. A. blew away B. picked up C. took away D. put down
8. A. and B. so C. or D. but
9. A. cut B. planted C. watered D. built
10. A. mistake B. noise C. difference D. decision
五、五选四(共 4 小题,每小题 5 分,共 20 分)
根据短文内容,从方框中选出能填入空白处的最佳选项,选项中有一项为多余选项。
Forests are the lungs of the Earth. They do many important things for our planet. 1________
First, forests provide homes for millions of animals and plants. Many species can only live in forests. Without forests, they would have nowhere to go. 2________ They take in carbon dioxide and give out oxygen, which keeps the air clean for us to breathe.
Forests also help stop natural disasters. The roots of trees hold the soil together, so there are fewer landslides. 3________ They also stop sandstorms from spreading to cities.
But today, forests are disappearing fast. People cut down too many trees for farms and buildings. Forest fires also destroy large areas. 4________ We can plant more trees, use less paper, and support organizations that protect forests. Every small action helps.
A. They are also important for clean air.
B. Wind and rain are important for trees to grow.
C. Trees in forests can also help keep water clean.
D. It is time for us to take action to save forests.
E. They are one of the most important parts of our ecosystem.
参考答案
一、选词填空
1. sandstorm 2. blew away 3. generations 4. hunt 5. solution
6.reserve 7. forest 8. survive 9. produce 10. protect
二、用所给单词的适当形式填空
1. generations 2. difficult 3. blew 4. have planted 5. helps
6.travelled 7. winter 8. green 9. moves 10. to produce
三、阅读理解 A
1. B 2. C 3. C 4. B
四、完形填空
1. A 2. B 3. C 4. A 5. B 6. C 7. A 8. D 9. B 10. C
五、五选四
1. E 2. A 3. C 4. D
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