题型：阅读选择 题类：常考题 难易度：普通
When we look at a picture of Earth from space, there are areas of green, blue, and white. Most people will recognize(辨认) that the green island, the blue is water, and the white is clouds. Taken as a whole, Earth is mainly blue. That is because of the amount(数量) of water it has that covers the surface. So, how much of Earth is water? About 71% of Earth's surface is covered in water. Of that 71%, the oceans hold about 96.5% of the water. The water found in oceans is all salt water. The remaining 3.5%of the water is fresh water, which can be found in lakes, rivers, glaciers(冰川), and in the ground. Freshwater is what people use for farming, raising animals, drinking, and daily activities such as taking showers and washing clothes or dishes. Does the amount of water stay the same? For the most part, yes. Water on Earth is part of a closed system. That is, water is always moving and changing forms between ice, liquid, and gas. The form of the water changes all the time, but the total amount of water on Earth remains the same. If Earth is not necessarily running out of water, why are people worried? Why do we need to think about saving water? First, humans can only use fresh water, which is only about 3.5% of all of Earth's water. Second, of this 3.5%, only about 1% is available for human use. Most fresh water is found in glaciers far from where anyone lives. Third, the amount of water that is useful for humans is being used faster than it can be cleaned and put back into the environment. Now, knowing the facts about water, it is our job to make sure we use Earth's water in a good way. |
{#blank#}1{#/blank#}Lisa becomes interested in traditional Chinese painting and she wants to learn how to paint bamboo in ink. {#blank#}2{#/blank#}Alan is from India. He is studying Chinese history. He has learned a lot about the four great inventions of ancient China. {#blank#}3{#/blank#}San is an Australian boy living in Beijing. He takes great interest in traditional Chinese opera （a musical play）.He hopes to take a class of local opera. {#blank#}4{#/blank#}Mary likes classic （经典的） Chinese works. She has read the one about Monkey King since she came to China. {#blank#}5{#/blank#}Susan loves Chinese paper cutting. She wants to make a Chinese "Fu" to put up on her window this Spring Festival. | A.In this weekend's story-telling time, you'll hear plenty of stories about Chinese traditions, for example, why people put up the Chinese "Fu" upside down on the door or window. B. Beijing Opera is a form of traditional art in China. Our club is set up for fans and welcomes you to join us. We have invited some famous local actors to give acting classes. C. Paper cutting sounds simple but is difficult to do. Bring red paper and learn the making of paper cutting. You can make a Chinese "Fu" in class and take it home . D. We will hold a competition on the four great inventions of ancient China next month. The first round will be a written test. The next round will be a short speech in Chinese. E.A show of traditional Chinese ink paintings will be held in the Art Museum this weekend. Many works of animals by famous artists will be on show. F.A discussion will be held in our reading club this weekend. The topic is about Journey to West, one of the four great classic Chinese works. G. Traditional Chinese painting is a form of fine arts in Chinese culture. In our training class, Mr. Sun will teach you how to paint bamboo with brushes and ink step by step. |
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