What do you know about the sea? We know that it looks very pretty when the sun i

What do you know about the sea? We know that it looks verypretty when the sun is shining on it. We also know that it can be very roughwhen there is a strong wind. What other things do we know about it?

     The first thing to remember isthat the sea is very big. When you look at the map of the world you will findthere is more water than land. The sea covers three quarters of the world.

     The sea is also very deep in someplaces. It is not deep everywhere. Some parts of the sea are very shallow. Butin some places the depth of the sea is very great. There is one spot, nearJapan, where the sea is nearly 11 kilometers deep! The highest mountain in theworld is about 9 kilometers high. If that mountain were put into the sea atthat place, there would he 2 kilometers of water above it ! What a deep place !

     If you have swum in the sea, youknow 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 thanother parts. There is one sea, called the Dead Sea, which is very salty. It isso salty that swimmers cannot sink! Fish cannot live in the Dead Sea!

     In most parts of the sea, thereare plenty of fishes and plants. Some live near the top of the sea. Others livedeep 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 liveby eating these.

     The sea can be very cold. Diverswho go deep down in the sea know this. On the top the water may be warm. Whenthe diver goes downwards, the sea becomes colder and colder. Another thinghappens. When the diver goes deeper, the water above presses down on him. Itsqueezes him. Then the diver has to wear clothes made of metal. But he cannotgo very deep. Some people who wanted to go very deep used a very strong divingship! They went down to the deepest part of the sea in it. They went down to adepth of eleven kilometers !

1.When does the sea look beautiful?  

A. When it iscalm.              B. When the weather is fine.

       C. When there is astrong  wind.     D. When there is a storm.

2. How much of the earth’s  surface does landcover?  

A. 15%.       B.25%.        C.30%.         D. 45%.

3.Why does the writer cite（引用） the seasomewhere near Japan? 

       A. To show that thesea in some places is very deep.

       B. To show that thesea in some places is very shallow.

       C. To show that itsdepth is 9 kilometers greater than the height of the highest mountain.

       D. To show that itsdepth is 11 kilometers greater than the height

          ofthe highest mountain.

4.Which of the following statements about the Dead Sea isNOT true?

       A. Swimmers cannotsink.         B. It is a safe place forswimmers. 

       C. It is extremelysalty.           D. Fish canbe found in it.

试题答案

【答案】

1.B

2.B

3.A

4.D

【解析】略