首页 专四好课 专四备考 专八好课 专八备考

新东方在线 > 专四专八 > 英语专业四级 > 英语专业四级听力 > 正文

2022年英语专四听力dictation练习（20）

2021-11-26 17:38:00来源：网络

　　新东方在线专四专八频道给大家整理的相关内容，希望能够对大家的专四专八考试备考有所帮助，更多有关专四专八的备考内容，欢迎随时关注新东方在线专四专八频道。

　　Waves

　　How does light get from the sun to the earth? How does musicget 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 travelthrough different kinds of matter.

　　For example, light wavescannot move through walls, but sound waves can. That is

　　why you can hear people talking inanother room even though you cannot see them.

　　The energy of some waves is destructive. Anearthquake 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 inwaves. 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 avacuum. 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

　　以上就是新东方在线专四专八频道给大家整理的相关内容，希望对大家有所帮助，更多备考内容，欢迎随时关注新东方在线专四专八频道。


专四专八精选好课 暖心助学

新东方好老师 手把手带学

本文关键字: 专四听力 专四

2020专四专八复习备考必备资料

关注新东方在线服务号回复【专四/专八词汇】

更多资料

关注新东方在线服务号

关注新东方在线服务号，
免费获取专四专八必看干货资料

  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【关注公众号】，回复对应关键字领取学习资料。
更多>>
更多内容
更多>>
更多好课>>
更多>>
更多资料
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10