阅读理解

　　There is a lake near a forest in Sweden. The water in the lake is very clear and everything is quiet and still. On the far side of the water is some farmland and further away, across the field, is an old church built on a hill. It is spring time and it has just stopped raining. The stream flowing into the lake is full and there is still some half-melted snow from last winter on the ground.

　　The reason why the water is so clear, and everything is so quiet and still, is that most of the plant and animal life in and around the lake is dead. There are no birds because all the fish and insects(昆虫), which the birds need for food, have disappeared. Many trees in the forest are losing their leaves and bark, and are sick and dying. Others were blown down by the high winds of last winter. A farmer is working in a field planting wheat, but unless he plants a stronger kind of seed this year, the crop will be between 25 to 40 percent lower than a few years ago. The stone of the old church is turning to powder and unless the tower is repaired soon, it will fall down.

　　All the death and destruction in this place is due to(由于) pollution : pollution from smoke coming out of factory chimney and fumes(烟) coming out of the exhausts(排气) of cars and trucks. And yet this silent lake is hundreds of kilometres away from the nearest factory and motor way.

1．In which country is the lake?

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2．What time of the year do you think it is?

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3．The lake is silent because ________.

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A．people seldom go there

B．people around the lake are dead

C．most of the plant and animal life in or around the lake is dead

D．it is winter time

4．Why are there no animals or birds in or around the lake?

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A．Because the weather is bad.

B．Because the lake is quiet.

C．Because there is pollution.

D．Because the people killed them.

5．The title for this passage would be ________.

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A．Nature and Pollution

B．The Silent Lake

C．Animals and Plants around the Lake

D．Stronger Seed Planted

We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.

   When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration (迁徙) is probably the migration of fish, which is called “salmon”(蛙鱼). This fish is born in fresh(淡的) water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.

    Recently, scientists have studied the migration of a kind of lobster (龙虾). Every year, when the season of the bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go. So, sometimes we know why humans and animals move from one place to another, but at other times we don’t. Maybe living things just like to travel.

1. Most animals move from one place to another at a certain time to _______.

   A. enjoy warmer weather        

B. find food more easily

   C. find beautiful places        

D. get away from crowded places

2. The underlined word “There” in the second passage means “___________”.

A. in cold water                B. in warm water       

C. in salty water               D. in fresh water  

3. Why do the lobsters get into a long line to move?

A .It’s a safe traveling way.

B. The weather is bad.

C. It is still unknown to us.

D. They just don’t want not to be too crowded.

4. The passage is mainly about ________________.”

A. the migration of animals    

B. the migration of fish       

C. the travel of animals           

D. the secret of nature