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2019年12月英语四级听力50篇:20 Waves

2019年12月英语四级听力50篇:20 Waves
2019年12月英语四级听力50篇:20 Waves

2019年12月英语四级听力50篇:20 Waves

2018年12月英语四级听力50篇汇总

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

2018年12月英语四级听力50篇汇总本文关键字:英语四级听力四级听力备考

2013年12月大学英语四级听力真题(附原文及答案解析)

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2010年12月大学英语四级听力真题的试题与答案

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2019年英语四级真题(一)作文范文

It's such an excitement to hear that you are planning to come to China to teach English. In response to your inquiry concerning the city to choose ,I would like to recommend Beijing to you.Listed below are some details. There are three reasons why I recommend Beijing to you. First of all, Beijing, as the capital of China, has many famous universities and parents also attach great importance to their children's education.Therefore, there is a great demand for excellent foreign teachers. Secondly, Beijing has a large number of English-speaking people which can help you adapt to the new environment faster. What's more,Beijing has abundant educational resources,which means you will have many opportunities to learn the Chinese culture you are interested https://www.sodocs.net/doc/bb9698060.html,st but not least, Beijing is my hometown,if you come here, we can play together and eat a lot of delicious food. It has been two years since I saw you last time and I can't wait to see you. T aking all the factors into account,I believe that you will have a enjoyable time in Beijing.I f you have any questions I will spare no effort to help you.I am looking forward to your early reply.

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2019年12月英语四级听力真题原文【完整版】

2019年12月英语四级听力真题原文【完整版】 News 1 A device that weighs less than one kilogram is part of a mission that will allow scientists to deliver fourth generation or 4G mobile coverage to the moon in 2019。 If successful, the tiny device will provide the moon with its first ever mobile phone network。 The lunar network will support high definition streaming of video and data between the moon and earth。 The network is part of a mission to the moon。 This is a project with the goal of landing the first privately paid for mission to the moon。 The 4G mission is set to launch from Cape Canaveral in the United States on a space X Falcon 9 rocket in 2019。 Mission to the moon intends to establish and test the first elements of a communications network on the moon。 The scientists working on the project opted to build a 4G rather than a fifth generation or 5G network。 This is because fifth generation networks are still in testing and trial phases。 This means that a 5G network may not yet be stable enough to work on the moon‘s surface Question 1:What are scientists planning to do? Question 2:Why did scientists choose to set up a 4G network in their mission? News 2 It‘s responded to a fire Wednesday night at an abandoned mall in Heywood。 The fire was reported at 9:26 pm at an old shopping center on Michigan Avenue near St。 Mary’s Church。 Six fire engines, two trucks and two chiefs

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2000年1月大学英语四级(CET-4)真题试卷 (2) 2000年6月大学英语四级(CET-4)真题试卷 (5) 2001年1月大学英语四级(CET-4)真题试卷 (8) 2001年6月大学英语四级(CET-4)真题试卷 (11) 2002年1月大学英语四级(CET-4)真题试卷 (13) 2002年6月大学英语四级(CET-4)真题试卷 (16) 2003年1月大学英语四级(CET-4)真题试卷 (19) 2003年6月大学英语四级(CET-4)真题试卷 (21) 2003年9月大学英语四级(CET-4)真题试卷 (24) 2003年12月大学英语四级(CET-4)真题试卷 (27) 2004年6月大学英语四级(CET-4)真题试卷 (30) 2005年1月大学英语四级(CET-4)真题试卷 (31) 2005年6月大学英语四级(CET-4)真题试卷 (33) 2005年12月大学英语四级(CET-4)真题试卷 (36) 2006年6月17日大学英语四级(CET-4)真题试卷 (39) 2006年12月23日大学英语新四级(CET-4)真题试卷 (42) 2007年12月22日大学英语四级(CET-4)真题试题B卷 (46) 2008年6月大学英语四级考试A卷真题 (51) 2008年12月大学英语四级考试A卷真题 (56) 2009年6月英语四级考试真题与答案 (61) 2009年12月英语四级考试真题与答案 (65)

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