Animals can move from place to place, but pla...

Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back. Plants certainly cannot run away, and they have no teeth or claws. But plants can still protect themselves in both physical and chemical ways.

Some plants have their own ways to keep animals away. For example, the leaves of the hollies(冬青树)　 have sharp spines (刺) that discourage grass-eating animals. Holly leaves on lower branches have more prickles than leaves on upper branches. This is because the lower leaves are easier for most animals to reach.

Some plants, such as the oak trees(橡树), have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material，so eating such grasses wears down the animal's teeth

Many plants also have the chemical defense. Some plants produce chemicals that taste bitter or cause an unpleasant reaction. Some plants may protect themselves by increasing the production of these chemicals.　 When a worm(毛虫) bites a tobacco leaf, the leaf produces a chemical smell.

Many plants depend on both physical and chemical defense. A certain plant in China, for instance, has　 prickly (多刺的) leaves, and each prickle contains poisonous water(毒液).Only one experience with this kind of plant will teach an animal to stay away from it in the future.

1.What can a plant do when it is under attack?

A. It can protect itself

B. It can run away.

C. It can fight back.

D. It must die.

2.Why do the leaves of the hollies have sharp prickles according to the passage?

A. Because they are lower.

B. Because they are beautiful to watch.

C. Because they stop people from picking..

D. Because they make grass-eating animals stay away.

3.How does an oak tree protect itself?

A. It has leaves with a delicious material.

B. It has leaves with sharp prickles.

C. It has thick and hard leaves.

D. Its leaves taste bitter.

4.What does the underlined word“sandy” mean in Chinese?

A. 含盐的　　 B. 含沙的　　 C. 坏掉的　　 D. 腐烂的

5.Which of the following is TRUE according to the passage?

A. The hollies have thick and hard leaves.

B. The oak trees have leaves with poisonous water

C. A plant has only one kind of way to protect itself, physical one or chemical one.

D. A tobacco leaf produces a chemical smell when a worm bites it.

九年级英语阅读单选困难题查看答案及解析

Many countries are setting up nation parks　　　 animals and plants can be protected.

A. when　　　　　　　　　 B.which　　　　　　　　 C.where

九年级英语单项填空简单题查看答案及解析

Tiny plants and animals live all around us. We cannot see them because they are so small, but they are everywhere.

They live in the soil, the air, and in rivers and oceans. They grow on mountains and in caves. Some live in the ice at the north and south poles; some live where it is very hot. They are found throughout cities and in the country. They grow on other plants and animals. Some are even living on you, on your skin, hair, and inside your body, in your mouth, nose, and all through your intestines (肠).

These tiny plants and animals are called microbes. The word microbe is made from two other words: micro, meaning small, and bios, meaning life. So, microbe means small life.

Microbes have been on earth for a very long time. They may have been the first forms of life to be alive. Today there are more microbes in the world than all other living things.

People did not know microbes had existed (存在) long. They were too small for them to see.

But people did see many changes in their world—important changes. And they did not know what caused them. They saw food that they kept too long change color and begin to smell bad. They saw cuts and wounds grow red and painful and become infected. They saw old plants and leaves and trees crumble apart on the forest floor and disappear into the soil. Such changes were a natural part of the world, but people did not understand them. They did not know these changes were evidence (证据) of tiny plants and animals growing all around them.

1.Where do microbes live?

A. Only in the forest.,　　 B. Almost everywhere.

C. Most in very hot areas.,　　 D. Most in rivers and oceans.

2.The underlined phrase “crumble apart” in the last paragraph means “________”.

A. 开花结果,　　 B. 化为春泥,　　 C. 破裂腐烂,　　 D. 芳香四溢

3.According to the passage, which is the most suitable to complete the web below?

A. Microbes are very small,　　 B. Microbes are all around us

C. People can’t see microbes,　　 D. Food begins to smell bad

4.The best title of the passage could be ________.

A. The smallest life around us,　　 B. The origin (起源) of microbes

C. The place of microbes growing,　　 D. The evidence of microbes growing

九年级英语阅读单选简单题查看答案及解析

Tiny plants and animals live all around us. We cannot see them because they are so small, but they are everywhere.

They live in the soil, the air, and in rivers and oceans. They grow on mountains and in caves. Some live in the ice at the north and south poles; some live where it is very hot. They are found throughout cities and in the country. They grow on other plants and animals. Some are even living on you, on your skin, hair, and inside your body, in your mouth, nose, and all through your intestines (肠).

These tiny plants and animals are called microbes. The word microbe is made from two other words: micro, meaning small, and bios, meaning life. So, microbe means small life.

Microbes have been on earth for a very long time. They may have been the first forms of life to be alive. Today there are more microbes in the world than all other living things.

People did not know microbes had existed (存在) long. They were too small for them to see.

But people did see many changes in their world—important changes. And they did not know what caused them. They saw food that they kept too long change color and begin to smell bad. They saw cuts and wounds grow red and painful and become infected. They saw old plants and leaves and trees crumble apart on the forest floor and disappear into the soil. Such changes were a natural part of the world, but people did not understand them. They did not know these changes were evidence (证据) of tiny plants and animals growing all around them.

1.Where do microbes live?

A. Only in the forest.　　 B. Almost everywhere.

C. Most in very hot areas.　　 D. Most in rivers and oceans.

2.The underlined phrase “crumble apart” in the last paragraph means “________”.

A. 开花结果　　 B. 化为春泥　　 C. 破裂腐烂　　 D. 芳香四溢

3.According to the passage, which is the most suitable to complete the web below?

A. Microbes are very small　　 B. Microbes are all around us

C. People can’t see microbes　　 D. Food begins to smell bad

4.The best title of the passage could be ________.

A. The smallest life around us　　 B. The origin (起源) of microbes

C. The place of microbes growing　　 D. The evidence of microbes growing

九年级英语阅读单选简单题查看答案及解析

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（迁移）is probably the migration of the 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 bccome too crowded. They move down to the low land. Sometimes they move all the way the seadide,and many of them are killed when they fall into the sea.

Recently, scientists have studied the migration of 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 know 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.enjoy warmer weather   C.find food more easily

2.The fish called “salmon”spends a long time in____

A.salt water        B.rivers                 C.fresh water

3.The mice in northern Europe move when_____

A.they give birth   B.the place gets too crowded

C.they haven’t enough food

4. The lobsters move_______.

A.to the fresh water   B.at a certain time  C.to find more food

5.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.

九年级英语选择题困难题查看答案及解析

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 easily, but others move to get away from places that are too crowed.

When cold weather comes, many birds move to warmer places to find food. Some fish give birth in warm water and move to cold water to feed. The most famous migration(迁移) of the fish, which is called “salmon(大马哈)”. 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 there. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowed. 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 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 others times we don’t. Maybe living things just like to travel.

九年级英语其他题中等难度题查看答案及解析

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

九年级英语阅读理解困难题查看答案及解析

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

九年级英语阅读理解极难题查看答案及解析

All our food comes from the soil(土壤). Some of us eat meat, but animals live on plants. If there are no plants, we will have no animals and meat. So the soil is necessary for us to live.

The top of ground is usually covered with grass or other plants. Plants grow in soil, which has a dark color. This dark soil is humus. Dead leaves, dead plants and animals’ waste make it, but this takes a long time. When the humus has been made, plants can grow well in it.

All soil needs food. If we don’t give it any, the plants will be weak. Animals’ waste is the best food for the soil, but chemical fertilizers (化肥) are also very useful. The same crop (庄稼) should not be grown in the same place every year; it is better to have a different crop. A change of crop and the use of a good fertilizer will keep the land in good condition.

When the soil is dry, the wind blows it away. Sometimes heavy rain carries the humus down to a river. People should grow more and more trees and grass to stop wind from carrying the humus (腐殖土壤)away. It takes hundreds of years to make humus, and so we must save every bit of it. Without soil, where can we grow food?

1. From the text, we know people live on ___________.

A. animal B. plant

C. meat　　　 D. soil

2. We should ___________ to keep the soil.

A. give more fertilizers

B. grow a different crop every year

C. make more humus

D. grow more trees and grass

3. We should save every bit of humus, because ___________.

A. it takes a long time to make humus

B. sometimes the wind will blow the dry soil away

C. the chemical fertilizers are expensive

D. animals waste is the best food for the soil

4.From the passage, we know that soil is ___________ to people.

A. not helpful　　　　 　　 B. necessary

C. not important　　　　 D. harmful

九年级英语阅读理解中等难度题查看答案及解析

All our food comes from the soil (土壤). Some of us eat meat, but animals live on plants. If there were no plants, we should have no animals and meat. So the soil is necessary for life.

The top of ground is usually covered with grass or other plants. Plants grow in soil, which has a dark color. This dark soil is humus, dead leaves, dead plants and animal waste make it, but this takes a long time. When the humus has been made, plants can grow well in it.

All soil needs food. If we don’t give it, any plants will be weak. Animals waste is the best food for the soil, but chemical fertilizers (化肥) are also very useful. The same crop should not be grown in the same place every year; it is better to have a different crop. A change of crop and the use of good fertilizer will keep the land in good condition.

When the soil is dry, the wind blows it away. Sometimes heavy rain carries the humus down to a river. People should grow more and more trees and grass to stop wind from carrying the humus away. It takes hundreds of years to make humus, and so we must save every bit of it. Without soil, where can we grow food?

1.From the text, we know people live on _______.

A. animal B. plant C. soil

2.The word “humus” means _____ in Chinese.

A. 微生物 B. 腐殖土 C. 粘土

3.We should _______ to keep the soil.

A. give more fertilizers

B. make more humus

C. grow more trees and grass

4.We should save every bit of humus, because ______.

A. it takes a long time to make humus

B. the more humus in the soil, the better plants grow

C. A and B

5.The best title of this text should be ______.

A. Soil is necessary to people

B. Soil’s food is chemical fertilizers

C. Humus is hard to make

九年级英语阅读单选中等难度题查看答案及解析