2018年12月英語四級聽力50篇:20 Waves

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    英語聽力是英語四六級考試中的重要組成部分,對于中國的考生,日常英文聽說機會少,缺少聽力訓練,所以在備考大學英語四級時,需要加強聽力的訓練。針對這一情況,英語四六級頻道特別整理聽力相關文章,供學員參考使用。預祝大家高分通過考試。
    2018年12月英語四級聽力50篇匯總
    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 破壞的
    2. seismic地震的
    3. vacuum真空
    2018年12月英語四級聽力50篇匯總
    本文關鍵字: 英語四級聽力 四級聽力備考