Question

Do you know why so many animals do not stay in one place? Birds, fish and other animals move from one place to another place 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 is probably the migration of fish, which is called “salmon”(鲑鱼). This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is old, it will return 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 place, but at other times we don’t. Maybe living things just like to travel.

1.The reason for most of the animals to move is ________.

A. to get away from un-crowded places          B. to find their own parents

C. to want to kill themselves                  D. to find food more easily

2.Where does young salmon(鲑鱼) spend its life?

A. In fresh water.         B. In salt water.   

C. In mountain homes.    D. In its birthplace.

3. When do the lobsters(龙虾) begin to move another place?

A. When their homes become too crowded.   

B. When the season of the bad weather arrives.

C. When they want to give birth.           

D. When their food is eaten up.

4. The underlined word migration in the passage means ________.

A. 迁徙            B. 习性          

C. 运动            D. 寻觅

Answer

1.D

2.B

3.B

4.A

【解析】

试题分析：鸟儿、鱼和其他的动物为什么会从一个地方迁居到另一个地方呢？大多数迁居是想更容易地找到食物。其他的是要离开太拥挤的地方。比如鸟在冬天来临之前，迁徙到温暖的地方；有些鱼温水去，却要到冷水里觅食。再如鲑鱼和龙虾的迁徙也很有意思。

1.细节理解题。根据most of them move to find food more easily,可知，大多数迁居是想更容易地找到食物。故选D。

2.细节理解题。根据This fish is born in fresh water but it travels many miles to salt water. There it spends its life.可知，鲑鱼生活在咸水了。故选B。

3.推理判断题。根据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.可知，每年当坏天气的季节到来时，龙虾们就排着队开始横穿海底。故选B。

4.4】词义推测题。根据前后句子的意思可知，最著名的迁徙可能是一种叫鲑鱼的鱼。它们生在淡水了，却要跋涉许多英里到咸水了生活。老了在回到出生的淡水区生儿育女，然后死去。migration的意思是move，迁居、迁徙。故选A。

考点：科普类短文阅读。