What do you know about the sea? You may have seen it. Some of us have swum or bathed in it. It looks beautiful on a fine sunny day and it can be very rough when there is a strong wind. What other things do we know about it? Of course, the sea is very large. In the world there is more sea than land. The sea covers three quarters of the earth. The sea is also very deep in some places. It is not deep everywhere, some parts of it are very great. At one spot, near Japan the sea is nearly 11 kilometers deep! Just think of it, the highest mountain in the world is only about 9 kilometers high! If you have swum in the sea, you know that the water is salty. Rivers carry salt from the land into the sea. Some parts of the sea are more salty than other parts. Do you know the Dead Sea in Arabia? It is very salty. Swimmers cannot sink in it! Fish cannot live in the Dead Sea. It is a strange sea. In most parts of the sea, there are a lot of fishes and plants. Some live near the top of the sea. Others live deep down. No sunlight can reach the depth of the sea. So it is completely dark. Strange fishes live there. Some are blind. Some have their own lights. Some have great jaws. With their great jaws, they swallow fish larger than themselves. The sea can be very cold. Deep sea divers know this well. At the top of the water may be warm. Then as the divers go down, the sea becomes colder and colder.
Many scientists are now making a study of animal and plant life in the sea. They hope to find new resources for mankind.
【小题1】. Which of the following statements is NOT true?

A．Land covers one fourth of the area of the earth.

B．The depths of the sea are different in different places.

C．The depth of a sea at one spot near Japan is nearly the height of the highest mountain.

D．The salt in the sea mainly comes from the land.

What do you know about the sea? You may have seen it. Some of us have swum or bathed in it. It looks beautiful on a fine sunny day and it can be very rough when there is a strong wind. What other things do we know about it? Of course, the sea is very large. In the world there is more sea than land. The sea covers three quarters of the earth. The sea is also very deep in some places. It is not deep everywhere, some parts of it are very great. At one spot, near Japan the sea is nearly 11 kilometers deep! Just think of it, the highest mountain in the world is only about 9 kilometers high! If you have swum in the sea, you know that the water is salty. Rivers carry salt from the land into the sea. Some parts of the sea are more salty than other parts. Do you know the Dead Sea in Arabia? It is very salty. Swimmers cannot sink in it! Fish cannot live in the Dead Sea. It is a strange sea. In most parts of the sea, there are a lot of fishes and plants. Some live near the top of the sea. Others live deep down. No sunlight can reach the depth of the sea. So it is completely dark. Strange fishes live there. Some are blind. Some have their own lights. Some have great jaws. With their great jaws, they swallow fish larger than themselves. The sea can be very cold. Deep sea divers know this well. At the top of the water may be warm. Then as the divers go down, the sea becomes colder and colder.

  Many scientists are now making a study of animal and plant life in the sea. They hope to find new resources for mankind.

1.. Which of the following statements is NOT true?

   A. Land covers one fourth of the area of the earth.

   B. The depths of the sea are different in different places.

   C. The depth of a sea at one spot near Japan is nearly the height of the highest mountain.

   D. The salt in the sea mainly comes from the land.

2... The Dead Sea is lifeless because ___.

   A. the water in it is too cold                   B. the water in it is too salty for anything to grow

   C. the water in it never flows                   D. no sunlight can reach the bottom of the lake

3.. We can see the underlined word “rough” in this passage means ___.

   A. ugly              B. noisy                C. cold             D. not calm

4... Which of the following statements is true?

   A. Some of the fish living in the depth of the sea can not see by themselves.

   B. Some fish give out light for themselves.

C. Some fish live on other fish.             D. All of the above

5... What does the writer intend to tell us in the last paragraph?

   A. The necessity of the study of the sea.        B. The purpose of man’s further study of the sea.

   C. Man’s limited knowledge of the sea.      D. The importance of new resources for man.

阅读理解

　　What do you know about the sea? You may have seen it. Some of us have swum or bathed in it. It looks beautiful on a fine sunny day and it can be very rough when there is a strong wind. What other things do we know about it? Of course, the sea is very large. In the world there is more sea than land. The sea covers three quarters of the earth. The sea is also very deep in some places. It is not deep everywhere, some parts of it are very great. At one spot, near Japan the sea is nearly 11 kilometres deep! Just think of it, the highest mountain in the world is only about 9 kilometres high! If you have swum in the sea, you know that the water is salty. Rivers carry salt from the land into the sea. Some parts of the sea are more salty than other parts. Do you know the Dead Sea in Arabia? It is very salty. Swimmers cannot sink in it! Fish cannot live in the Dead Sea. It is a strange sea. In most parts of the sea, there are a lot of fishes and plants. Some live near the top of the sea. Others live deep down. No sunlight can reach the depth of the sea. So it is completely dark. Strange fishes live there. Some are blind. Some have their own lights. Some have great jaws. With their great jaws, they swallow fish larger than themselves. The sea can be very cold. Deep sea divers know this well. At the top the water may be warm. They as the divers go down, the sea becomes colder and colder.

　　Many scientists are now making a study of animal and plant life in the sea. They hope to find new resources for mankind.

1．Which of the following statements is NOT true?

[　　]

A．Land covers one fourth of the area of the earth.

B．The depths of the sea are different in different places.

C．The depth of a sea at one spot near Japan is nearly the height of the highest mountain.

D．The salt in the sea mainly comes from the land.

2．The Dead Sea is lifeless because ________.

[　　]

A．the water in it is too cold

B．the water in it is too salty for anything to grow

C．the water in it never flows

D．no sunlight can reach the bottom of the lake

3．We can see the underlined word rough in this passage means ________.

[　　]

4．What does the writer intend to tell us in the last paragraph?

[　　]

A．The necessity(必要性)of the study of the sea.

B．The purpose of man's further study of the sea.

C．Man's limited knowledge of the sea.

D．The importance of new resources for man.

When the weather turns warm, everyone wants to be in or around the water. Learning how to keep safe is necessary if you plan to go swimming.

“Buddy up!” Always swim with a partner, every time-and this is very important. Even experienced swimmers can become tired or face sudden accidents, which might make it difficult to get out of the water. When you swim together, you can help each other or go for help in a minute.

Get skilled. It’s good to go be fully prepared. Learning some life-saving skills can help you save a life. A number of organizations offer free classes to both beginning and experienced swimmers and boaters. Check with local hospitals, or the Red Cross.

Know your limits (极限). Swimming an be a lot of fun and you might want to stay in the water as long as possible. If you’re not a good swimmer or you’re just learning to swim, don’t go in water that’s so deep for you and don’t try to keep up with skilled swimmers. That can be dangerous, especially when your friends are challenging you.

If you are a good swimmer and have had lessons, keep an eye on friends who aren’t as comfortable or as skilled as you are. If they or you are getting tired, you should take a break for a while.

Swim in safe areas only. It’s a good idea to swim only in places that are directed by a lifeguard. No one can expect changing ocean currents (水流), sudden storms, or other dangers. In the event that something does go wrong, lifeguards trained in life-saving skills are ready to help.

Swimming in an open body of water like a lake is different from swimming in a pool. Do your research so you know where not to swim, and pay attention to any warning sign(警告标志) posted in the area.