大学英语专业四级听力短篇练习：23

　　新东方在线专四专八频道给大家整理的大学英语专业四级听力短篇练习：23,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 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 hem.

　　The energy of some waves is destructive. An arthquake 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! (175 words)

　　Useful Words and Expressions:

　　matter n.物质;内容;事情

　　reading matter阅读材料

　　This is a matter of no account.这是一件无关紧要的事。

　　I have an urgent matter to atend to.我有一件急事要办。

　　I have an important matter to talk to you about.我有件重要的事要和你谈谈。

　　destructive adj.破坏(性)的

　　seismic adj.[地]地震的

　　seismic waves震波

　　bounce v.(使)反跳，弹起

　　bounce back弹回

　　vacuum n.真空

　　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. (150 words)

　　Useful Words and Expressions:

　　mineral n.矿物，矿石

　　clay n.黏土，泥土

　　loam n.(含有黏土、沙以及有机物质的)肥土

　　layer n.层，阶层

　　gravity n.地心引力，重力

　　downhill adv.往下

　　affect v.影响;感动;患(病)，中(暑)

　　be affected by heat[cold]中暑[着凉〕

　　Smoking affect health.吸烟影响健康。

　　He was deeply affected by my words.他听了我的话很受感动。

　　以上就是新东方在线专四专八频道给大家整理的大学英语专业四级听力短篇练习：23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