题型:阅读选择 题类:模拟题 难易度:普通
The ocean can be a great place to swim and play, it may also be useful in another way. Some scientists think that waves could help make electricity.
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave?” asked Jamie Taylor of the Wave Energy Group in Scotland. “There is certainly a lot of energy in waves.”
Scientists are working on using that energy to make electricity. The United States and a few other countries have started doing research on wave energy, and it is already being used in Scotland.
Most waves are created when winds blow across the ocean. “The winds start out by making little ripples (波纹) in the water, but if they keep on blowing, those ripples get bigger and bigger and turn into waves,” Taylor said. “Waves are one of nature's ways of picking up energy and then sending it off on a journey.”
When waves come towards the coast, people can set up dams(大坝) to block the water and send it through a large wheel called a turbine(涡轮). The turbine can then power an electrical generator(发电机).
We will never run out of wave power. Besides, wave energy does not create the same pollution as oil and coal do.
Oceans cover three quarters of the earth's surface. That would make wave power seem perfect for creating energy around the world. But there are some disadvantages that need us to pay more attention to.
Jamie Taylor said that wave power still cost too much money. He said that its influence on animals in the sea is still unknown. Besides, wave power would get in the way of fishing and boat traffic.
With more research, “Many of these problems might be solved,” Taylor said. “Finding more energy sources(资源) is very important, for traditional sources of energy like oil and gas may run out some day.”
In the future, when you turn on a light button, an ocean wave could be providing the electricity!
Do you know how to start a club at school? Here are some helpful ideas for you:
Photo Club Many students don't know how to take photos. A photo club can help. You can give camera setting(设置) lessons to students. What you need: A classroom; some cameras; some apps. | |
LEGO Club Who doesn't love building with LEGO? In this club, you can have a LEGO-building match(比赛) every week, like making the best cars or the most beautiful restaurant with LEGO. What you need: A classroom; LEGO. | |
Gardening Club A gardening club can be a lot of fun for students. They can learn how to grow their own vegetables and flowers. They can also learn to work with other students. It's useful. What you need: Small farms; plants and seeds(种子); gardening tools(工具). |
A TV show—Chinese Poetry Competition (中国诗词大会) has become popular with many people. Now let's interview some students from our school and listen to what they said.
I like Wu Yishu very much. She studies at the High School Affiliated to Fudan University in Shanghai. She came out on top. She can recite more than 2,000 Chinese poems (诗). I really admire her knowledge of poems. She is tall and beautiful, and she always stays calm (冷静的) whether the questions are easy or hard. —Zhang Hua ,14, Huangong Middle School |
The woman I like best is Bai Ruyun. She comes from a poor village in Xingtai. She is a farmer. She is in bad health, but she has been so confident in herself since she began to read and recite Chinese poems. —Li Weijun ,13, Xinxin Middle School |
I like Wang Zilong best. He is 34 years old. He teaches Chinese in Shijiazhuang College. He said he had learned Chinese poems since he was two years old. —Lin Jing ,15, Hongxin Middle School |
Do you know the young boy? He is Ye Fei, 13, from Anqing No. 2 Middle School in Anhui. In one competition, he answered all the questions correctly. Now he is a young star in his school because of his love of Chinese poems. —Hu Jiashu ,14, Weicheng Middle School |
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