The Sea What do you know about the sea? We know that it looks very pretty when the sun is shining on it. We also know that it can be very rough when there is a strong wind. What other things do we know about it? The first thing to remember is that the sea is very big. When you look at the map of the world you will find there is more water than land. The sea covers three quarters of the world. The sea is also very deep in some places. It is not deep everywhere. Some parts of the sea are very shallow. But in some places the depth of the sea is very great. There is one spot, near Japan, where the sea is nearly 11 kilometers deep! The highest mountain in the world is about 9 kilometers high. If that mountain were put into the sea at that place, there would be 2 kilometers of water above it! What a deep place! If you have swum in the sea, you know that it is salty. You can taste the salt. Rivers, which flow into the sea, carry salt from the land into the sea. Some parts of the sea are saltier than other parts. There is one sea, called the Dead Sea, which is very salty. It is so salty that swimmers cannot sink! Fish cannot live in the Dead Sea! In most parts of the sea, there are plenty of fishes and plants. Some live near the top of the sea. Others live deep down. There are also millions of tiny living things that float in the sea. These floating things are so small that it is hard to see them. Many fish live by eating these. The sea can be very cold Divers who go deep down in the sea, know this. On the top the water may be warm. When the diver goes downwards, the sea becomes colder and colder. Another thing happens. When the diver goes deeper, the water above presses down on him. It squeezes him. Then the diver has to wear clothes made of metal. But he cannot go very deep. Some people who wanted to go very deep used a very strong diving ship! They went down to the deepest part of the sea in it. They went down to a depth of eleven kilometers! 练习: 1. When does the sea look beautiful? A) When it is calm B) When the weather is fine C) When there is a strong wind D) When there is a storm 2. How much of the earths surface does land cover? A) 15% B) 25% C) 30% D) 45% 3. Why does the author cite the sea somewhere near Japan? A) To show that the sea in some places is very deep. B) To show that the sea in some places is very shallow C) To show that its depth is 9 kilometers greater than the height of the highest mountain D) To show that its depth is 11 kilometers greater than the height of the highest mountain 4. Which of the following statements about the Dead Sea is NOT true? A) There are plenty of fishes in it. B) It is a safe place for swimmers. C) It is extremely salty. D) No fish can be found in it. 5. Why cant people go very deep in the sea? A) Because the deepest part of the sea is very cold. B) Because the deepest part of the sea is very rough. C) Because the pressure of the water at great depths is unendurable. D) Because fierce fish usually live there. 答案: BBAAC
2017届高三英语人教版综合能力测试六
2017届高三英语一轮复习课时作业48:语法专练八之非谓语动词
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2017届高三英语一轮复习课时作业10:Unit 4《Wildlife protection》(新人教版必修2)
2017届高三英语一轮复习课时作业46:语法专练六之动词及动词短语
2017届高考英语一轮复习课时作业18:Unit 3《A taste of English humour》(人教版必修4湖北专用)
2017届高三英语一轮复习课时作业18:Unit 3《A taste of English humour》(新人教版必修4)
2017届高三英语一轮复习课时作业19:Unit 4《Body language》(新人教版必修4)
2017届高三英语一轮复习课时作业52:语法专练十二之连词和状语从句
2017届高考英语一轮复习课时作业22:Unit 2《The United Kingdom》(人教版必修5湖北专用)
2017届高考英语一轮复习课时作业26:Unit 1《Art》(人教版选修6湖北专用)
2017届高三英语一轮复习课时作业14:Unit 3《The Million Pound Bank Note》(新人教版必修3)
2017届高三英语一轮复习课时作业9:Unit 4《Wildlife protection》(新人教版必修2)
2017届高三英语人教版综合能力测试四
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2017届高三英语一轮复习课时作业7:Unit 2《The Olympic Games》(新人教版必修2)
2017届高三英语人教版综合能力测试三
2017届高三英语一轮复习课时作业6:Unit 1《Cultural relics》(新人教版必修2)
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2017届高三英语一轮复习课时作业54:语法专练十四之主谓一致
2017届高三英语人教版综合能力测试七
2017届高三英语一轮复习课时作业3:Unit 3《Travel journa》(新人教版必修1)
2017届高三英语一轮复习课时作业45:语法专练五之介词及介词短语
2017届高三英语一轮复习课时作业41:语法专练一之名词
2017届高三英语一轮复习课时作业4:Unit 4《Earthquakes》(新人教版必修1)
2017届高三英语一轮复习课时作业47:语法专练七之动词的时态和语态
2017届高三英语一轮复习课时作业51:语法专练十一之名词性从句
2017届高三英语人教版综合能力测试一
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