题型:阅读选择 题类:常考题 难易度:普通
牛津版(深圳•广州)初中英语九年级下册Module 3 Sport and health Unit 5 Sport单元综合能力检测题(音频暂未更新)
Three powerful ocean storms hit the Caribbean, the coast of the southeastern United States and southeastern Mexico. They come as the state of Texas recovers from Hurricane Harvey (飓风哈维). The huge storm caused serious flooding and billions of dollars in damage in Houston, the country's fourth-largest city.
Hurricane season in the Atlantic Ocean goes from June 1 to November 30. And most storm activities happen in me month of September.
Hurricanes are the most powerful storms in the Earth's atmosphere. The storms have different names depending on where they take place. Scientists call all these storm tropical cyclones (热带气旋).
If the storms form over the Atlantic Ocean or eastern Pacific Ocean, they are called hurricanes. Storms that form in the western Pacific Ocean are known as typhoons. In the Indian Ocean, they are called cyclones. Although they have different names, all these storms form in the same way.
Scientists at the American space agency NASA describe tropical cyclones as huge weather "engines" that use warm, moist (潮湿的) air as fuel.
They can only form over warm, tropical waters near the equator (赤道).
A tropical cyclone develops when warm moist air near the surface of me ocean rises. This creates an area of unusually low air pressure.
Higher-pressure air from surrounding areas pushes in to take the place of the warm, rising air. It becomes warmer and moister and rises, too.
The rising, moist air goes high into the atmosphere, where temperatures are low. This creates wind. The moisture forms clouds. The developing weather system begins to spin because of the Earth's rotation (旋转).
As the storm spins faster and faster, an "eye" of the storm develops at its centre. This is a calm area of very low pressure. Higher pressure air from above flows down into the eye.
Giant Pandas(大熊猫) Where they live: Mainly in Sichuan, also in Shaanxi(陕西)and Gansu. Why they are in danger: They don't have enough food. They don't give birth to many babies. Fun facts: •A new baby panda is as small as a rat. •Pandas spend almost the whole day eating! But they only take in 20% of what they eat. Pandas poop(排便)over 12 times a day. •Pandas have been on the earth for about 3 million years. |
Siberian Tigers(东北虎) Where they live: Northeastern China and Russia. Why they are in danger: People hunt them and destroy their habitat. Baby tigers are weak and often die early. Fun facts: A father tiger always leaves his family without saying goodbye. Then the mother tiger takes care of the babies. She is very careful. She hides her babies when she goes out hunting(猎食), and takes a different way home. |
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