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2022英语专业四级听力练习文章(20)

2022-05-08 18:56:00来源：网络

2022英语专业四级听力练习文章(20)

　　英语专四听力的复习指导，对于大家来说，也是尤为重要的。在实际的复习中，大家需要找到英语专四听力正确的备考方向，备考内容，这样才能有针对性的备考训练，提升我们的英语专四听力水平。下面小编为大家整理了“2022英语专业四级听力练习文章(20)”，让我们一起来看看吧!

　　Passage 20

　　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 forms 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.

　　以上就是为大家整理的“2022英语专业四级听力练习文章(20)”，希望大家能够更好的掌握专四听力，提高专四水平。


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