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三、还原信息
Do you know what a landform is? We use landforms to describe the earth's surface, such as a mountain, or an island (岛). Things in nature such as wind, water and ice can shape(塑造) landforms. Human activities can also influence(影响) landforms, such as farming, mining (采矿) and building.
1. For example, people can build dams (大坝) to create (造) lakes for water and power using. People can also plant trees to protect the land and build homes for animals.
But some human activities can hurt the landforms and bring out problems to the earth and people's life. 2. Cities take away animals' homes and make it harder for plants to grow. So there may be more floods. Farming is another way people hurt the environment(环境). Farmers need to grow food, but they might hurt the land and water.
3. People need lots of things from the earth, but mining can hurt the land.
We should care about the landforms and protect them. Landforms are important for many reasons (原因). First, they give us natural resources(资源). Second, they influence the weather of different areas. 4.
By protecting the landforms, we are not only protecting the earth's beauty, but also our own future.
A. But we can do many things about it.
B. Mining is another problem that people may hurt landforms.
C. Also, they always amaze people with different types of beauty.
D. For example, people cut down forests for all kinds of needs.
E. We can use them to help stop floods and give animals home.
F. Some human activities can change the landforms in good ways.
Do you know what a landform is? We use landforms to describe the earth's surface, such as a mountain, or an island (岛). Things in nature such as wind, water and ice can shape(塑造) landforms. Human activities can also influence(影响) landforms, such as farming, mining (采矿) and building.
1. For example, people can build dams (大坝) to create (造) lakes for water and power using. People can also plant trees to protect the land and build homes for animals.
But some human activities can hurt the landforms and bring out problems to the earth and people's life. 2. Cities take away animals' homes and make it harder for plants to grow. So there may be more floods. Farming is another way people hurt the environment(环境). Farmers need to grow food, but they might hurt the land and water.
3. People need lots of things from the earth, but mining can hurt the land.
We should care about the landforms and protect them. Landforms are important for many reasons (原因). First, they give us natural resources(资源). Second, they influence the weather of different areas. 4.
By protecting the landforms, we are not only protecting the earth's beauty, but also our own future.
A. But we can do many things about it.
B. Mining is another problem that people may hurt landforms.
C. Also, they always amaze people with different types of beauty.
D. For example, people cut down forests for all kinds of needs.
E. We can use them to help stop floods and give animals home.
F. Some human activities can change the landforms in good ways.
答案
三、1－4 FDBC
