根据表格信息，从每小题的A、B、C、D中选出最佳答案。The earth is 4 600...

根据表格信息，从每小题的A、B、C、D中选出最佳答案。

The earth is 4 600 million years old. We humans have lived on earth for only 35 000 years, but during this period we have changed our planet a lot in many ways. Some things we’ve done are very good for the earth while some are bad.

All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so more and more sorts of animals and plants are disappearing.

In big cities, cars and buses have polluted the air. Many people in cities now have health problems.

Factories have also polluted the land and the water. As a result, many rivers and lakes are nowdead.

Around the earth, there’s a special kind of oxygen called “ozone”(O3). It is important to theearth. But now air pollution is destroying it and that has made a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. This is very dangerous because this kind of radiation can cause cancer.

Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal andwood. This has formed a “blanket” around the earth. The heat from the sun can’t escape so thetemperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change.

All these problems are very serious, so we must do something now.

根据短文内容，从题中所给的A、B、C、D四个选项中选择最佳答案。

1.What does our planet mean here?

A. The sun.　　　 B. Mars.

C. The moon.　　　 D. The earth.

2.In the passage, “blanket” refers to_______________.

A. carbon dioxide around the earth

B. the ozone layer in the sky

C. the forests around the world

D. pollution all over the world

3.The level of the oceans is rising because of _______.

A．pollution

B. few trees

C. the greenhouse effect

D. changes in the climate

4.Which is NOT true?

A. Cars can pollute the air.

B. Factories can pollute the water.

C. The fewer trees, the better.

D. Not all the things we have done are good for the earth.

5.What is the best title for this passage?

A. Environmental Problems

B. Pollution on the Earth

C. Hope for the Future

D. The Greenhouse Effect

九年级英语阅读理解中等难度题查看答案及解析

阅读下面短文，根据短文内容选择正确的答案

The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.

Water Pollution

A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.

Air Pollution

In big cities, factories, as well as cars, trucks and buses are the main causes of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.

Soil Pollution

In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.

Hope For The Future

These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!

根据短文内容，选择正确答案。

1._____ have made the earth change a lot.

A.Human beings　　　　　　　　 B.Animals

C.Plants　　　　　　　　　　　　　 D.People in other planets

2.There are _____ kinds of pollution in this passage.

A.two　　　　　　　　 B.three　　　　　　　　 C.four　　　　　　　 D.five

3._____ is a big problem now.

A.Pollution.　　　　　　　　　　 B.Population.

C.Education　　　　　　　　　　 D.Medical treatment

4.Which sentence is NOT true according to the passage?

A.Most of the things that we have done are good for our planet.

B.We must stop the factories from pouring waste water into the rivers and lakes.

C.Because of water pollution, many rivers and lakes are now dead.

D.Water pollution is very serious nowadays.

5.Which sentence is TRUE?

A.Though Mexico city is always covered by thick brown clouds, it’s still a beautiful sunny capital.

B.Air pollution can make people sick.

C.Now fewer farmers use chemicals in the fields.

D.Factories, cars, trucks and buses are the main causes of soil pollution.

九年级英语阅读理解中等难度题查看答案及解析

根据短文内容，从短文后的选项中选出适当的选项补全短文。

The earth is about 4,600 million years old. We humans have lived on the earth for only 35,000 years, but during this period we have changed our planet a lot in many ways. 1

All over the world, people have cut down millions of trees, so more and more kinds of animals and plants are disappearing. In big cities, cars and buses have polluted the air. Factories have also polluted the land and the water.

2 It is important to the earth. But now air pollution is destroying it and that has made a very big hole in the ozone layer (臭氧层).3 This is very dangerous because it can cause cancer.

Carbon dioxide (CO₂) in the air has increased a lot. 4 it has formed a "blanket" (毛毯) around the each.5 This makes our earth become warmer and warmer. Therefore, this causes the level of the ocean to rise.

All these problems are very serious. We must do something to stop our earth from being polluted anymore.

九年级英语补充句子困难题查看答案及解析

The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.

Water pollution

A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.

Air pollution

In big cities, factories, as well as cars, trucks and buses are the main cause of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.

oil pollution

In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.

Hope for the future

These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!

1._____ have made the earth change a lot.

A. Human beings    B. Animals

C. Plants        D. People in other planets

2.There are _____ kinds of pollution in this passage.

A. two    B. three    C.four    D.five

3.Pollution isn’t a big problem now, is it?

A.Yes, it is.        B.No, it isn’t.

C.Yes, there is.    D.No, there isn’t.

4.Which sentence is NOT right according to the passage?

A. Because of water pollution, many rivers and lakes are now dead.

B.We must stop the factories from pouring waste water into the rivers and lakes.

C. Most of things that we have done are good for our planet.

D.Water pollution is very serious nowadays.

5.Which sentence is RIGHT?

A.Though Mexico city is always covered by thick brown clouds, it’s still a beautiful sunny capital.

B.Air pollution can make people sick.

C.Now fewer farmers use chemicals in the fields.

D.Factories, cars, trucks and buses are the main cause of soil pollution

九年级英语阅读理解中等难度题查看答案及解析

The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.

Water pollution

A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.

Air pollution

In big cities, factories, as well as cars, trucks and buses are the main cause of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.

Soil pollution

In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.

Hope for the future

These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!

1._____ have made the earth change a lot.

A.Human beings B.Animals C.Plants D.People in other planets

2.There are _____ kinds of pollution in this passage.

A.two B.three C.four D.five

3.Pollution isn’t a big problem now, is it?

A.Yes, it is. B.No, it isn’t. C.Yes, there is. D.No, there isn’t.

4.Which sentence is NOT right according to the passage?

A.Most of things that we have done are good for our planet.

B.We must stop the factories from pouring waste water into the rivers and lakes.

C.Because of water pollution, many rivers and lakes are now dead.

D.Water pollution is very serious nowadays.

5.Which sentence is RIGHT?

A.Though Mexico city is always covered by thick brown clouds, it’s still a beautiful sunny capital.

B.Air pollution can make people sick.

C.Now fewer farmers use chemicals in the fields.

D.Factories, cars, trucks and buses are the main cause of soil pollution.

九年级英语阅读单选中等难度题查看答案及解析

The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.

Water Pollution

A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.

Air Pollution

In big cities, factories, as well as cars, trucks and buses are the main causes of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.

Soil Pollution

In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.

Hope For The Future

These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!

根据短文内容，选择正确答案。

1._____ have made the earth change a lot.

A. Human beings B. Animals C. Plants D. People in other planets

2.There are _____ kinds of pollution in this passage.

A. two B. three C. four D. five

3._____ is a big problem now.

A. Pollution. B. Population. C. Education D. Medical treatment

4.Which sentence is NOT true according to the passage?

A. Most of the things that we have done are good for our planet.

B. We must stop the factories from pouring waste water into the rivers and lakes.

C. Because of water pollution, many rivers and lakes are now dead.

D. Water pollution is very serious nowadays.

5.Which sentence is TRUE?

A. Though Mexico city is always covered by thick brown clouds, it’s still a beautiful sunny capital.

B. Air pollution can make people sick.

C. Now fewer farmers use chemicals in the fields.

D. Factories, cars, trucks and buses are the main causes of soil pollution.

九年级英语阅读单选中等难度题查看答案及解析

The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed the earth in many ways. Many of the things that we have done are good, but more are not good for the earth.

Water Pollution

A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.

Air Pollution

In big cities, factories, as well as cars, trucks and buses are the main causes of air pollution. Many people in cities now have serious health problems. For example, Mexico City used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.

Soil Pollution

In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.

Hope For The Future

These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!

根据短文内容，选择正确答案，并将其字母代号填入答题卡相应空格内。

1.________ have made the earth change a lot.

A. Plants　　 B. Animals　　 C. Human beings　　 D. Water

2.There are ________ kinds of pollution in this passage.

A. two　　 B. three　　 C. four　　 D. five

3.________is a big problem now.

A. Pollution　　 B. Population　　 C. Education　　 D. Medical treatment

4.The underlined word “chemicals” in the passage means“________”in Chinese.

A. 农用工具　　 B. 建筑材料　　 C. 化学药物　　 D. 营养物质

5.Which sentence is TRUE according to the passage?

A. Though Mexico city is always covered by thick brown clouds, it’s still a beautiful sunny capital.

B. Air pollution can make people sick.

C. Now fewer farmers use chemicals in the fields.

D. Factories, cars, trucks and buses are the main causes of soil pollution.

九年级英语阅读单选中等难度题查看答案及解析

The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.

Water pollution

A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.

Air pollution

In big cities, factories, as well as cars, trucks and buses are the main cause of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.

Soil pollution

In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.

Hope for the future

These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!

根据短文内容，选择正确答案。

1._____ have made the earth change a lot.

A.Human beings    B.Animals

C.Plants     　　 D.People in other planets

2.There are _____ kinds of pollution in this passage.

A.two            B.three             C.four             D.five

3.Which sentence is NOT true according to the passage?

A.Most of things that we have done are good for our planet.

B.We must stop the factories from pouring waste water into the rivers and lakes.

C.Because of water pollution, many rivers and lakes are now dead.

D.Water pollution is very serious nowadays.

4.Which sentence is TRUE?

A.Though Mexico city is always covered by thick brown clouds, it’s still a beautiful sunny capital.

B.Air pollution can make people sick.

C.Now fewer farmers use chemicals in the fields.

D.Factories, cars, trucks and buses are the main cause of soil pollution.

九年级英语阅读理解中等难度题查看答案及解析

The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.

Water Pollution

A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.

Air Pollution

In big cities, factories, as well as cars, trucks and buses are the main causes of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.

Soil Pollution

In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.

Hope For The Future

These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!

根据短文内容，选择正确答案。

1._____ have made the earth change a lot.

A.Human beings　　 B.Animals

C.Plants 　　　　　　 D.People in other planets

2.There are _____ kinds of pollution in this passage.

A.two B.three C.four D.five

3._____ is a big problem now.

A.Pollution.　　　　 B.Population.

C.Education　　　　　 D.Medical treatment

4.Which sentence is NOT true according to the passage?

A.Most of the things that we have done are good for our planet.

B.We must stop the factories from pouring waste water into the rivers and lakes.

C.Because of water pollution, many rivers and lakes are now dead.

D.Water pollution is very serious nowadays.

5.Which sentence is TRUE?

A.Though Mexico city is always covered by thick brown clouds, it’s still a beautiful sunny capital.

B.Air pollution can make people sick.

C.Now fewer farmers use chemicals in the fields.

D.Factories, cars, trucks and buses are the main causes of soil pollution.

九年级英语阅读理解中等难度题查看答案及解析

The earth is 4 600 million years old. We humans have lived on earth for only 35 000 years, but during this period we have changed our planet a lot in many ways. Some things we’ve done are very good for the earth while some are bad.

All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so more and more sorts of animals and plants are disappearing.

In big cities, cars and buses have polluted the air. Many people in cities now have health problems.

Factories have also polluted the land and the water. As a result, many rivers and lakes are now dead.

Around the earth, there’s a special kind of oxygen called “ozone”(O3). It is important to the earth. But now air pollution is destroying it and that has made a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. This is very dangerous because this kind of radiation can cause cancer.

Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal and wood. This has formed a “blanket” around the earth. The heat from the sun can’t escape so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change.

All these problems are very serious, so we must do something now.

根据短文内容，从题中所给的A、B、C、D四个选项中选择最佳答案。

1.What does our planet mean here?

A. The sun. 　　 B. Mars.

C. The moon.　　　 D. The earth.

2.In the passage, “blanket” refers to_______________.

A. carbon dioxide around the earth

B. the ozone layer in the sky

C. the forests around the world

D. pollution all over the world

3.The level of the oceans is rising because of _______.

A．pollution

B. few trees

C. the greenhouse effect

D. changes in the climate

4.Which is NOT true?

A. Cars can pollute the air.

B. Factories can pollute the water.

C. The fewer trees, the better.

D. Not all the things we have done are good for the earth.

5.What is the best title for this passage?

A. Environmental Problems

B. Pollution on the Earth

C. Hope for the Future

D. The Greenhouse Effect

九年级英语阅读理解中等难度题查看答案及解析