Question

【題目】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 (遷移) is probably the migration of fish, which is called “salmon”. 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 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 (近來), scientists have studied the migration of a kind of lobster (龍蝦). 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. give birth B. find food more easily

C. enjoy warmer weather D. find beautiful places

【2】 The mice in northern Europe move when _______.

A. they give birth

B. they haven’t enough food

C. the weather is bad

D. the place gets too crowded

【3】 What is the main idea of the passage?

A. Animals move to find food more easily.

B. The migration of the fish called “salmon” is the most famous migration.

C. Sometimes we know why and how living things move from one place to another, but sometimes we don’t.

D. Living things move from one place to another because they like to travel.

Answer 1

【答案】

【1】B

【2】D

【3】C

【解析】

試題分析：我們知道許多動物不呆在一個地方，移動的原因不同，有些動物是為了更容易地覓食。但也有一些動物是因為所居住的環(huán)境太擁擠。有時我們知道為什么人類和動物從一個地方搬到另一個地方，但是有時候我們卻不知道原因。

【1】B細節(jié)理解題，根據(jù)文中語句“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.”理解可知。它們移動的原因是為了更容易地覓食。故答案為B。

【2】D細節(jié)理解題 ，根據(jù)文中語句“They leave their mountain homes when they become too crowded.” 可知，它們離開它們的家園是因為它們的家變得太擁擠了。故答案為D。

【3】C主旨大意題。，根據(jù)文中最后一段的語句“So, sometimes we know why humans and animals move from one place to another, but at other times we don’t.”可知，有時我們知道為什么人類和動物從一個地方搬到另一個地方，但是有時候我們卻不知道原因。這就是本文的主題。故答案為C。