Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. Rain forests are very important to the world’s climate. The Amazon rain forest...

4.Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.Câu trả lời: 4.Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.

Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. Rain forests are very important to the world’s climate. The Amazon rain forest alone receives about 30 to 40 % of the total rainfall on the earth and products about the same percentage of the world’s oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life. Saving our rain forests is an international problem. One country, or even a few countries can not solve the problem alone. The nations of the world must work together to find a solution before it is too late 1.Where are tropical rain forests found ? => Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. 2.How are rain forests to the world's cliamate ? => Rain forests are very important to the world’s climate 3.How much percent of the world's oxygen does the Amazon rain forest produce ? => the Amazon rain forest produce about 30 to 40 % 4.What do scientists think about the descreasing size of rain forests ? => Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.Câu trả lời: Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. Rain forests are very important to the world’s climate. The Amazon rain forest alone receives about 30 to 40 % of the total rainfall on the earth and products about the same percentage of the world’s oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life. Saving our rain forests is an international problem. One country, or even a few countries can not solve the problem alone. The nations of the world must work together to find a solution before it is too late 1.Where are tropical rain forests found ? => Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. 2.How are rain forests to the world's cliamate ? => Rain forests are very important to the world’s climate 3.How much percent of the world's oxygen does the Amazon rain forest produce ? => the Amazon rain forest produce about 30 to 40 % 4.What do scientists think about the descreasing size of rain forests ? => Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.

Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. Rain forests are very important to the world’s climate. The Amazon rain forest alone receives about 30 to 40 % of the total rainfall on the earth and products about the same percentage of the world’s oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life. Saving our rain forests is an international problem. One country, or even a few countries can not solve the problem alone. The nations of the world must work together to find a solution before it is too late 1.Where are tropical rain forests found ? __They are found in Amazon region of south America, central America, Africa, and South and Southeast Asia.__ 2.How are rain forests to the world's cliamate ? __Rain forests are very important to the world’s climate. _ 3.How much percent of the world's oxygen does the Amazon rain forest produce ? __It produces about 30 to 40 percent of the world's oxygen__ 4.What do scientists think about the descreasing size of rain forests ? __They believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.__Câu trả lời: Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. Rain forests are very important to the world’s climate. The Amazon rain forest alone receives about 30 to 40 % of the total rainfall on the earth and products about the same percentage of the world’s oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life. Saving our rain forests is an international problem. One country, or even a few countries can not solve the problem alone. The nations of the world must work together to find a solution before it is too late 1.Where are tropical rain forests found ? __They are found in Amazon region of south America, central America, Africa, and South and Southeast Asia.__ 2.How are rain forests to the world's cliamate ? __Rain forests are very important to the world’s climate. _ 3.How much percent of the world's oxygen does the Amazon rain forest produce ? __It produces about 30 to 40 percent of the world's oxygen__ 4.What do scientists think about the descreasing size of rain forests ? __They believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.__

Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia...

Hãy tham gia nhóm Học sinh Hoc24OLM

quinn

27 tháng 3 2021 lúc 17:38

word form

1. humphry davy helped faraday much in his later __________. (discover)

2. the farmer is trying to ___________ the pig before killing it for meat. (fat)

3. this organization is very concerned about the _____ of the rain forests. (destroy)

4. i was annoyed at his ______ to cooperate. (refuse)

5. two ______ from the group ''friends of the earth'' are talking to the students. (represent)

làm và gt hộ e ạ.

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Trần Nguyễn Ánh Thư

24 tháng 2 2019 lúc 14:02

READING *Read the passage and choose A,B,C or D to complete each blank: Tropical rainforests are amazing places. You find them inAsia, Central and South America and parts of Africa. The temperatures there are(1)... 25 and 30 all year round and it raints(2)...Almost every day. These hot, wet conditions are ideal for plants, so the vegetation is dense and rich, and the wildlife is incredibly diverse. More than half of the worlds plant and animal species live in these forest. Weve already(3)...mo...

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READING

*Read the passage and choose A,B,C or D to complete each blank:

Tropical rainforests are amazing places. You find them inAsia, Central and South America and parts of Africa. The temperatures there are(1)... 25 and 30 all year round and it raints(2)...Almost every day. These hot, wet conditions are ideal for plants, so the vegetation is dense and rich, and the wildlife is incredibly diverse. More than half of the world's plant and animal species live in these forest. We've already(3)...more than half of the world's tropical tainforests, either for wood or through farming. If we(4)... like this, we might wipe themout completely in less than forty years from now. One solution is to use the forests in a sustainable way, by using their natural resources, such as fruit, nuts and medical plans, without destroying the trees.

1)A.in B.at C.from D.between

2)A.heavily B.mainly C.hard D.continuously

3)A.damaged B.destroyed C.cut D.burnt

4)A.do B.begin C. carry on D.go on

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Pikachu

14 tháng 1 2018 lúc 22:37

VI Read the following passage and answer each of the question below. ( 10 points ) We speak about the weather almost everyday. Before we begin doing something we want to know what kind of weather it is going to be. Why do we speak about the weather so often? The answer is not difficult. We want sunny weather when we go for a walk in the country, and on a rainy day we stay at home reading books, watching TV or doing other things. When we are at the seaside, windy...

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VI Read the following passage and answer each of the question below. ( 10 points )

We speak about the weather almost everyday. Before we begin doing something we want to know what kind of weather it is going to be.

Why do we speak about the weather so often? The answer is not difficult. We want sunny weather when we go for a walk in the country, and on a rainy day we stay at home reading books, watching TV or doing other things.

When we are at the seaside, windy weather is not pleasant . It is difficult to swim when the wind blows. And the wind can change good weather into bad one. The sun will stop shinning, and the rain may come.

And is there anything which we can do and must do in any weather? Yes, of coure there is. As English people say*rain or shine we must go to school.*.School is good in any weather, isn’t it?

It is obviously important for a farmer, a fisherman, an airplanr pilot, and a hip’s captain to know what the weather will be like. Unless they know what weather to expect , they cannot make their plans.

1 How often do we speak about the weather?

2 What do we usually do on a rainy day?

3 What is wrong with us when we are at the seasidde on a windy day?

4 According to the writer, what thing can we do and must we do in any weather?

5 Why is it important for us to know what kind of weather it is going to be?

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Khánh Linh Phạm

9 tháng 4 2018 lúc 21:23

Điền vào chỗ trống bằng 1 từ thích hợp: Today in China(1)........... large scale destruction of forests has occurred, the government has required that every citizen(2)......... the age of 11 and 60 plant three to five trees(3)......... year or do the equivalent amount of work in other forest services. The government claims that at(4)........... 1000 million(5)............ have been planted in China every year(6)......... 1982. In Western countries, increasing consumer demand for wood products...

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Điền vào chỗ trống bằng 1 từ thích hợp:

Today in China(1)........... large scale destruction of forests has occurred, the government has required that every citizen(2)......... the age of 11 and 60 plant three to five trees(3)......... year or do the equivalent amount of work in other forest services. The government claims that at(4)........... 1000 million(5)............ have been planted in China every year(6)......... 1982. In Western countries, increasing consumer demand for wood products that have been produced cause forest land-owners and forest industries to become increasingly accountable for their forest management and timber harvesting practices.

The Arbor Day Foundation's Rain Forest Rescue programme is a charity that helps to(7).......... deforestation. The charity uses money to buy up(8)........ preserve rainforest land before the lumber companies(9)........... buy it. The Arbor Day Foundation then(10).......... the land from deforestation.

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Pikachu

28 tháng 12 2017 lúc 21:40

II. Fill in the blank of the following passage with ONE suitable word. Write your answer on your answer sheet. There is much more water than land (1)___________ the surface of the earth. The sea and oceans (2)_____________ nearly four-fifths of the whole world, and only one-fifth of (3)__________ land. If you traveled over the earth (4)______ ________different directions, you would have to spend much more of your time (5)________________ on water than on roads or railways. We sometimes f...

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II. Fill in the blank of the following passage with ONE suitable word. Write your answer on your answer sheet.

There is much more water than land (1)___________ the surface of the earth. The sea and oceans (2)_____________ nearly four-fifths of the whole world, and only one-fifth of (3)__________ land. If you traveled over the earth (4)______ ________different directions, you would have to spend much more of your time (5)________________ on water than on roads or railways. We sometimes forget that (6)_______________ every mile of land there is four miles of water.

There is much water on the surface of our earth that we (7)______________ to use two words to describe. We use the word seas to (8)______________ those parts of water surface which (9)______________ only a few hundreds of miles wide, the word oceans to describe the huge areas of water which are thousands of miles wide (10)__________ very deep.

III. Read the following passage carefully and choose the best answer to each question. Identify your answer by writing the corresponding letter A, B, C or D on your answer sheet.

One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial effluent which pours into the lake everyday. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.

Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.

1. According to the writer, one environmental problem in the world today is ________ .

A. acid rain B. industrial pollution. C. safe water shortage. D. population explosion .

2. Many sources of water are not drinkable because of _______ .

A. acid rain. B. industrial pollution. C. garbage D. all A, B, C, are correct

3. What is serious problem of Lake Baikal in Russia?

A. It contains a rich variety of animals and plants.

B. It is polluted by massive volumes of industrial wastes discharged into it .

C. It has 1,300 rare species that do not exist anywhere else in the world .

D. The government did not have the power to enforce laws and regulations.

4. How many countries throw industrial waste into the Mediterranean Sea regularly?

A. nearly 16 B. exactly 16. C. exactly 15 D. less than 15.

5. What is the message to the reader?

A. We should take action to protect our water resources.

B. We should take all water resources into account.

C. We should limit the use of water resources.

D. We should encourage people to use safe water.

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Ken

14 tháng 4 2017 lúc 17:28

One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world...

Đọc tiếp

One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial effluent which pours into the lake everyday. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.

Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.

1. According to the writer, one environmental problem in the world today is ________ .

A. acid rain B. industrial pollution.

C. safe water shortage. D. population explosion .

2. Many sources of water are not drinkable because of _______ .

A. acid rain. B. industrial pollution.

C. garbage D. all A, B, C, are correct

3. What is serious problem of Lake Baikal in Russia?

A. It contains a rich variety of animals and plants.

B. It is polluted by massive volumes of industrial wastes discharged into it .

C. It has 1,300 rare species that do not exist anywhere else in the world .

D. The government did not have the power to enforce laws and regulations.

4. How many countries throw industrial waste into the Mediterranean Sea regularly?

A. nearly 16 B. exactly 16.

C. exactly 15 D. less than 15.

5. What is the message to the reader?

A. We should take action to protect our water resources.

B. We should take all water resources into account.

C. We should limit the use of water resources.

D. We should encourage people to use safe water.

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Phan Hà Thanh

4 tháng 7 2019 lúc 9:31

Unlike buried treasure and some minerals, fossils are usually not valuable in themselves. However, most of the fossils you find will be of greatest value to you. They will help you learn much about the geologic history of the earth and its inhabitants. If it were not for fossils, we would have no way of knowing about the animals that once roamed the earth or that once crawled on the bottom of the ancient seas. In fact, we would not even know for sure that there were once seas in some regions i...

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Unlike buried treasure and some minerals, fossils are usually not valuable in themselves. However, most of the fossils you find will be of greatest value to you. They will help you learn much about the geologic history of the earth and its inhabitants.

If it were not for fossils, we would have no way of knowing about the animals that once roamed the earth or that once crawled on the bottom of the ancient seas. In fact, we would not even know for sure that there were once seas in some regions if it were not for the many fossils of sea animals that we find there.

You can look at some fossils and see for yourself the shape of the ancient animals. Even if you collect only bits of one kind of fossil, you may still be able to tell what it looked like. Making sense out of fossil bits is a little like working a jigsaw puzzle. Sometimes you will lose pieces, but you can still recognize the picture and even use your imagination to fill in missing details. The habits of ancient sea animals are not so easy to determine. Therefore, scientists study the structure and the habits of similar living animals to learn what the ancient ones must have been like. There are some things, however, that neither the study of fossils nor the study of living animals can tell us. For example, no one knows what colour most ancient sea animals were. Also, since the soft parts disappeared soon after death, many details of their internal structure are unknown. So the pictures of ancient sea creatures (as well as dinosaurs!) are what scientists think the animals looked like. Reconstructing the life of an ancient sea animal on the basis of fossil evidence and the characteristics of similar living animals is a little like relying on circumstantial evidence in court.

1. This passage is mainly about animals that __________.

A. have very tough hides

B. once lived on the earth

C. inhabit the seas of today

D. are becoming extinct

2. With the help of fossils we can __________.

A. reconstruct life of the past

B. predict the future

C. explain the changes of the seasons

D. save some species of animals from extinction

3. Many details of ancient animals are lacking because __________.

A. many species have not been found

B. volcanic disasters have permanently buried many fossils

C.many fossils lie in deep water and cannot be recovered

D. soon after death the soft parts of the body decay

49. To “determine" in the passage is closest in meaning to __________.

A. come across

B. study

C. find out

D. imitate

50. This passage implies that a scientist's evaluation of the past is based on __________.

A. laboratory experiments with live animals

B. a few facts mixed with a lot of opinions

C. predictions made in the past and present

D. field studies of our society

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Trương Thu Hoa

3 tháng 2 2020 lúc 18:57

X Read the passage. Answer the questions below. Scientists have discovered that the ozone layer is getting thinner. Some predict that the sun’s rays will cause a sharp increase in deaths from skin cancer over the next fifty years. These harmful rays can also damage the eyes, create wrinkles, and cause other health problems. The stratosphere contains a form of oxygen called ozone. Ozone is a molecule composed of three oxygen atoms. The chemical formula of ozone is 03. Oxygen molecules make up...

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X Read the passage. Answer the questions below.

Scientists have discovered that the ozone layer is getting thinner. Some predict that the sun’s rays will cause a sharp increase in deaths from skin cancer over the next fifty years. These harmful rays can also damage the eyes, create wrinkles, and cause other health problems.

The stratosphere contains a form of oxygen called ozone. Ozone is a molecule composed of three oxygen atoms. The chemical formula of ozone is 03. Oxygen molecules make up about 21% of all gases in the Earth’s atmosphere. They consist of two atoms of oxygen and are labeled 02. Most ozone found in our atmosphere is formed by an interaction between oxygen molecules and ultraviolet radiation (UV) from the sun. When ultraviolet radiation hits an oxygen molecule, it may cause the molecule to break apart into single atoms of oxygen. These single atoms are very reactive, and a single oxygen atom can combine with a molecule of oxygen to form ozone.

1.What do people say about the rate of deaths from skin cancer in the future?

2. How many oxygen atoms are there in a molecule?

3.What elements participate in the formation process of ozone?

4.What happens when an oxygen molecule and an ultraviolet radiation hit each other?

5.What is the feature of single atoms?

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Lớp 8 Tiếng anh Luyện tập tổng hợp

lol Qn

20 tháng 2 2020 lúc 17:41

marriage share a funeral house ceremonies branch stilt house ethnic minority musical instruments Jarai (or Giarai) The largest (1)___________ group on the Central Highlands is the Jarai, with a population of about 250,000. It is thought that Jarai people lef the coastal plains around 2000 years ago, settling on the fertile plateau around Pleiku, and in Kon Tum Province. Some ethnologists think that Cham people are in fact a (2)____________ of the Jarai, and they certainly (3)___________...

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marriage share a funeral house ceremonies branch stilt house ethnic minority musical instruments Jarai (or Giarai) The largest (1)___________ group on the Central Highlands is the Jarai, with a population of about 250,000. It is thought that Jarai people lef the coastal plains around 2000 years ago, settling on the fertile plateau around Pleiku, and in Kon Tum Province. Some ethnologists think that Cham people are in fact a (2)____________ of the Jarai, and they certainly (3)____________ common linguistic traits. Villagers are often named for a nearby river, stream or tribal chief. In the centre of each can be found a large (4)____________, which acts as a kind of community centre where the council of elders and their elected chief meet. Houses are traditionally built on stilt, facing north. Jarai women typically propose (5)___________ to men through a matchmaker, who delivers the prospective groom a cooper bracelet. Perhaps more than any of Vietnam’s other hill tribes, the Jarai are famous for their (6)____________, from stringed “gongs” to bamboo tubes, which act as wind ﬂutes and percussion. Animist beliefs are still strong and the Jarai world is filled with spirits, the most famous of which are the kings of Water, Fire and Wind, represented by shamans who are involved in rain-making (7)__________ and other rituals. Funeral rites are particularly complex and expensive: after the burial, (8)____________ is built over the grave and evocative sculptures of people, birds and objects from everyday life are placed inside.

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Lớp 8 Tiếng anh Luyện tập tổng hợp

Luyện tập tổng hợp

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