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.
Key: BBAAC
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题4 第3讲 语法专题7 定语从句(通用版)
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题4 第1讲 语法填空题型分析(通用版)
2016届高三英语二轮复习作业卷:18(含解析)(河北衡水)
2016年高考英语二轮复习课件:必修3 Unit 2 Healthy eating(新人教版)
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题1 第2讲 推理判断题(通用版)
2016届高考英语二轮语法专项复习课件:专题5 动词的时态与语态(新人教版)
2016届高考英语二轮高频词汇练习14
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题4 第3讲 语法专题4 动词的时态、语态和语气(通用版)
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题3 书面表达(通用版)
2016届高考英语二轮语法专项复习课件:专题4 形容词、副词和修饰关系(新人教版)
2016届高三英语二轮复习作业卷:17(含解析)(河北衡水)
2016届高考英语二轮语法专项复习课件:专题2 代词与语篇衔接(新人教版)
2016届高考英语二轮复习课堂达标训练:第2部分 考前冲刺30天(通用版)
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题4 第2讲 短文改错题型分析(通用版)
2016届高考英语二轮语法专项复习课件:专题11 特殊句式(新人教版)
2016届高考英语二轮词法专题讲座素材:10 情态动词
2016届高三英语二轮复习作业卷:15(含解析)(河北衡水)
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题4 第3讲 语法专题9 并列句和状语从句(通用版)
2016届高考英语二轮语法专项复习课件:专题8 定语从句(新人教版)
2016届高三英语二轮复习作业卷:20(含解析)(河北衡水)
2016届高三英语二轮复习作业卷:26(含解析)(河北衡水)
2016届高三英语二轮复习作业卷:29(含解析)(河北衡水)
2016届高三英语二轮复习作业卷:22(含解析)(河北衡水)
2016届高考英语二轮复习课堂达标训练:第1部分 题型专题方略 专题4 第3讲 语法专题8 名词性从句(通用版)
2016届高考英语二轮语法专项复习课件:专题6 情态动词与虚拟语气(新人教版)
2016届高考英语二轮语法专项复习课件:专题9 名词性从句(新人教版)
2016届高三英语二轮复习作业卷:28(含解析)(河北衡水)
2016年高考英语二轮复习课件:必修5 Unit 4 Making the news(新人教版)
2016届高考英语二轮语法专项复习课件:专题1 名词与主谓一致(新人教版)
2016届高三英语二轮复习作业卷:27(含解析)(河北衡水)