英语四级2021年12套听力,2021年12月英语四级听力练习

【#四六级考试# 导语】你想有拥有你没有过的能力，就要去做自己没有做过的努力。以下是©文档大全网整理的2021年12月英语四级听力练习，希望对您有所帮助。

【篇一】2021年12月英语四级听力练习

　　Waves

　　How does light get from the sun to the earth? How does music get from the stage to the audience? They move the same way-----in waves!

　　Light and sound are fomp3s of energy. All waves carry energy, but they may carry it differently. Light and sound travel through different kinds of matter. For example, light waves cannot move through walls, but sound waves can. That is why you can hear people talking in another room even though you cannot see them. The energy of some waves is destructive. An earthquake produces seismic waves.

　　Catch a wave. Ask a friend to stand a few feet away from you. Stretch a spring between you. Shake the spring to transfer energy to it. What happens? The spring bounces up and down in waves. When the waves reach your friend, they bounce back to you!

　　Light waves travel 300,000 kilometers (186,000 miles) per second! They can also travel through a vacuum. That is why light from the sun and distant stars can travel through space to the earth!

　　Useful Words and Expressions;

　　1. destructive 破坏的

　　2. seismic地震的

　　3. vacuum真空

【篇二】2021年12月英语四级听力练习

　　Soils

　　There are many different kinds of soils. Different soils have different types of rock and minerals in them. Some soils have more water in them than others. Some soils might have more plant and animal material in them, too.

　　Different kinds of soils are found in different parts of the world. There are several kinds of soils found in the United States. In some areas, the soil has a lot of clay. Other soils are very sandy. Loam is a kind of soil that has a good mixture of clay and sand.

　　In some places, soil layers are very thick. Lots of plants grow in places with a thick soil layer. In dry and windy places soil layers are much thinner. Layers of soil on mountains are thin because gravity pulls the soil downhill.

　　The type of soil in a particular place affects what kinds of plants can grow there.

　　Useful Words:

　　1. clay 黏土，泥土

　　2. loam 肥土

　　3. layer 层

　　4. gravity 地心引力，重力

　　5. downhill 往下

【篇三】2021年12月英语四级听力练习

　　Crisis

　　Life is a contest! Who will win? A bluebird and sparrow both compete for space to build their nests. A fast-growing maple tree and slower-growing dogwood compete for the sunlight they both need. Oil competes with coal and nuclear power as an energy source for electric power plants!

　　There is a problem. There is a limited amount of space for birds, sunlight for trees, and energy for people! If we do not cut back on our uses of some of our resources, someday they will be gone!

　　How can we use energy today and know we will have enough to go around in the future? We can choose alternate, or replacement, energy resources. It takes the earth millions of years to create coal, oil, and gas. They are nonrenewable resources.

　　Solar energy, wind energy and water energy are renewable resources. It takes the earth millions of years to create coal, oil, and gas. They are nonrenewable resources.

　　Solar energy, wind energy and water energy are renewable. What other ways can we conserve our sources? How can we make sure there is always enough to go around?

　　Useful words and expressions:

　　1. bluebird 蓝知更鸟

　　2. sparrow 麻雀

　　3. dogwood 山茱萸

　　4. power plant 发电厂，发电站

　　5. alternate 替换物

　　6. nonrenewable resources 不可再生资源

　　7. conserve 保存，保藏

2021年12月英语四级听力练习.doc

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