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　　A: What things live in the sea water?

　　B: There are lots of living thing.

　　A: Is the water cold?

　　B: Yes. The deeper, the colder.

　　6. Do the exercise.

　　Let’s practise (Ⅰ)

　　A: This is a reading comprehension. Through reading it ,we can know more about the sea. 这是一道阅读题，通过阅读，我们可以对大海了解得更多。For example,

　　A: Where does the salt in the sea from?

　　B: The rivers carry the salt from the land into the sea.

　　A: What live in the water?

　　B: Many fishes and plants. The fish live on the plant.

　　A: What is the temprature of the sea water?

　　B: On the top, it is warm, but it becomes cold at the bottom.

　　Let’s practise (2)

　　A: This is a reading exercise, after reading it, we should jugde the statement true or false. 这也是一道阅读题，阅读完以后，我们要判断下面的句子是对是错。

　　The deepest part of the water is near the USA. No

　　The highest mountain in the world is 11 km high. No

　　If you put the highest mountain in the deepest place of water, there would be 2 km of water above. Yes

　　People can go down into the deepest water of the sea. Yes

　　Scientist can go to the deepest place of the water by underwater ship. Yes