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21 tháng 3 2017

khó quạ chị ơi >.<

21 tháng 3 2017

cần chị gửi key thì nói nhé

Fill each blank in the following passage with ONE suitable word.       Write your answers in the spaces given. (15 pts)The mosquito is an insect that --(1)-- some of the worst diseases of man and animals. Certain kinds of mosquitoes carry the germs that cause --(2)-- serious diseases as malaria, --(3)-- yellow fever. When a mosquito “bites”, it may leave germs --(4)--. Many kinds of mosquitoes do not spread diseases, but they have --(5)-- “bites”.Mosquitoes are found in all parts of the world,...
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Fill each blank in the following passage with ONE suitable word.

      Write your answers in the spaces given. (15 pts)

The mosquito is an insect that --(1)-- some of the worst diseases of man and animals. Certain kinds of mosquitoes carry the germs that cause --(2)-- serious diseases as malaria, --(3)-- yellow fever. When a mosquito “bites”, it may leave germs --(4)--. Many kinds of mosquitoes do not spread diseases, but they have --(5)-- “bites”.

Mosquitoes are found in all parts of the world, --(6)-- near the North Pole. Most kinds of mosquitoes that carry diseases live in the hot, damp lands near the Equator. --(7)-- some countries, mosquitoes often gather in great swarms that look like clouds. They --(8)-- men, interfering with such work as fishing, lumbering, and mining.

Man controls mosquitoes in many --(9)--. Scientists have developed chemicals --(10)-- insecticides, which kill mosquitoes and other insects. Small amounts of these chemicals kill mosquitoes --(11)-- sprayed in home, garages where they grow. Mosquitoes --(12)-- their eggs in marshes, swamps and other pools of quiet --(13)--. Engineers may build canals through marshes --(14)-- drain off the water, and often fill small pools and swamps --(15)-- soil.

1
7 tháng 8 2021

Tham khảo

The mosquito is an insect that speards some of the worst diseases of man and animals. Certain kinds of mosquitoes carry the germs that cause such serious diseases as malaria, and yellow fever. When a mosquito“bites”, it may leave germs behind. Many kinds of mosquitoes do not spreaddiseases, but they have painful “bites”.Mosquitoes are found in all parts of the world, even near the NorthPole. Most kinds of mosquitoes that carry diseases live in the hot, damplands near the Equator. In some countries, mosquitoes often gather in
great swarms that look like clouds. They attack men, interfering with suchwork as fishing, lumbering, and mining.Man controls mosquitoes in many ways. Scientists have developed chemicals called insecticides, which kill mosquitoes and other insects.Small amounts of these chemicals kill mosquitoes when sprayed in home,garages where they grow. Mosquitoes lay their eggs in marshes, swampsand other pools of quiet water. Engineers may build canals throughmarshes to drain off the water, and often fill small pools and swamps with soil.

think he will get ________ the shock in such a short period of time. A. off B. out C. over D. away 93. You __________ give me a lift. I can easily catch a bus. A. don’t have B. needn’t C. don’t need D. mustn’t 94. Martin tried on three jackets, ___________ fitted him. A. none B. none of which C none of them D. not 95. I have English classes ________ day ; on Mondays, Wednesdays and Fridays. A. all other B. each other C. every other D. any other 96. _______________ caused certain diseases such...
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think he will get ________ the shock in such a short period of time. A. off B. out C. over D. away 93. You __________ give me a lift. I can easily catch a bus. A. don’t have B. needn’t C. don’t need D. mustn’t 94. Martin tried on three jackets, ___________ fitted him. A. none B. none of which C none of them D. not 95. I have English classes ________ day ; on Mondays, Wednesdays and Fridays. A. all other B. each other C. every other D. any other 96. _______________ caused certain diseases such as malaria was not known until the early 20 th century. A. That mosquitoes B. Mosquitoes C. Since mosquitoes D. Mosquitoes which 97. It’s essential that every student __________ the exam before attending the course. A. pass B. passes C. would pass D. passed 98. - Did your brother go to France ? - No, our parents suggested that we_____________ there at night. A. won’t go B. don’ t go C. not go D. not to go 99. _____________________ appear, they are really much larger than the Earth. A. As the small stars B. The stars as small C. Despite of the small stars D. Small as the stars 100. I haven’t seen Peter for a long time. I will _________ him this weekend. A. call for B. call in C. call off D. call on

2
26 tháng 6 2019

93. You __________ give me a lift. I can easily catch a bus.

A. don’t have B. needn’t C. don’t need D. mustn’t

94. Martin tried on three jackets, ___________ fitted him.

A. none B. none of which C none of them D. not

95. I have English classes ________ day ; on Mondays, Wednesdays and Fridays.

A. all other B. each other C. every other D. any other

96. _______________ caused certain diseases such as malaria was not known until the early 20 th century.

A. That mosquitoes B. Mosquitoes C. Since mosquitoes D. Mosquitoes which

97. It’s essential that every student __________ the exam before attending the course.

A. pass B. passes C. would pass D. passed

98. - Did your brother go to France ? - No, our parents suggested that we_____________ there at night.

A. won’t go B. don’ t go C. not go D. not to go

99. _____________________ appear, they are really much larger than the Earth.

A. As the small stars B. The stars as small C. Despite of the small stars D. Small as the stars

100. I haven’t seen Peter for a long time. I will _________ him this weekend.

A. call for B. call in C. call off D. call on

26 tháng 6 2019

think he will get ________ the shock in such a short period of time. A. off B. out C. over D. away

93. You __________ give me a lift. I can easily catch a bus. A. don’t have B. needn’t C. don’t need D. mustn’t

94. Martin tried on three jackets, ___________ fitted him. A. none B. none of which C none of them D. not

95. I have English classes ________ day ; on Mondays, Wednesdays and Fridays. A. all other B. each other C. every other D. any other

96. _______________ caused certain diseases such as malaria was not known until the early 20 th century. A. That mosquitoes B. Mosquitoes C. Since mosquitoes D. Mosquitoes which

97. It’s essential that every student __________ the exam before attending the course. A. pass B. passes C. would pass D. passed

98. - Did your brother go to France ? - No, our parents suggested that we_____________ there at night. A. won’t go B. don’ t go C. not go D. not to go

99. _____________________ appear, they are really much larger than the Earth. A. As the small stars B. The stars as small C. Despite of the small stars D. Small as the stars

100. I haven’t seen Peter for a long time. I will _________ him this weekend. A. call for B. call in C. call off D. call on

Mosquitoes   According to the World Health Organisation, malaria, a disease spread (0) ___________ mosquitoes, affects millions of people every year. Everyone knows how irritating the noise made by a mosquito, (1) ________ by a painful reaction to its bite, can be. It is astonishing that so (2) _________ is known about why mosquitoes are drawn to or driven away from people, given the level of distress and disease caused by these insects. We know that the most effective chemical (3) __________...
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Mosquitoes

 

  According to the World Health Organisation, malaria, a disease spread (0) ___________ mosquitoes, affects millions of people every year. Everyone knows how irritating the noise made by a mosquito, (1) ________ by a painful reaction to its bite, can be. It is astonishing that so (2) _________ is known about why mosquitoes are drawn to or driven away from people, given the level of distress and disease caused by these insects. We know that the most effective chemical (3) __________ protecting people against mosquitoes is diethyltoluamide, commonly shortened to deet. (4) __________ deet works well, it has some serious drawbacks: it can damage clothes and some people are allergic to it.

  Scientists know that mosquitoes find some people more attractive than others, but they do not know (5) ________ this should be. They also know that people vary in (6) _________ reactions to mosquito bites. One person has a painful swelling while (7) __________ who is bitten by the same mosquito may hardly notice. Scientists have never discovered the reason for this, but they have carried (8) _________ experiments to show that mosquitoes are attracted to, or put off by, certain smells. In the future, scientists hope to develop a smell that mosquitoes cannot resist. This could be used in a trap (9) _________ that, instead of attacking people, mosquitoes would fly into the trap and be destroyed. For the time (10) _________ however, we have to continue spraying ourselves with unpleasant liquids if we want to avoid getting bitten.

 giúp mình với cần gấp ạ

 

1
4 tháng 4 2022

Mosquitoes

 

  According to the World Health Organisation, malaria, a disease spread (0) ____by____ mosquitoes, affects millions of people every year. Everyone knows how irritating the noise made by a mosquito, (1) __followed______ by a painful reaction to its bite, can be. It is astonishing that so (2) __little______ is known about why mosquitoes are drawn to or driven away from people, given the level of distress and disease caused by these insects. We know that the most effective chemical (3) __for_____ protecting people against mosquitoes is diethyltoluamide, commonly shortened to deet. (4) __Although_____ deet works well, it has some serious drawbacks: it can damage clothes and some people are allergic to it.

  Scientists know that mosquitoes find some people more attractive than others, but they do not know (5) __why_____ this should be. They also know that people vary in (6) ___their____ reactions to mosquito bites. One person has a painful swelling while (7) ___another_______ who is bitten by the same mosquito may hardly notice. Scientists have never discovered the reason for this, but they have carried (8) __out_______ experiments to show that mosquitoes are attracted to, or put off by, certain smells. In the future, scientists hope to develop a smell that mosquitoes cannot resist. This could be used in a trap (9) ___so_____ that, instead of attacking people, mosquitoes would fly into the trap and be destroyed. For the time (10) ___being______ however, we have to continue spraying ourselves with unpleasant liquids if we want to avoid getting bitten.

VIII. Dùng từ gợi ý điền từ vào chỗ trống Air pollution is a (1) .............. of ill health in human being. In a lot of countries there are laws (2) .............. the amout of smoke (3) ........... factories can produce. Although there isn't enough information on the effects of (4) .................. (5) ................. the atmosphere, doctors have proved that air pollution causes lung (6) .............. . The gases from the exhausts of cars have also increased air...
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VIII. Dùng từ gợi ý điền từ vào chỗ trống

Air pollution is a (1) .............. of ill health in human being. In a lot of countries there are laws (2) .............. the amout of smoke (3) ........... factories can produce. Although there isn't enough information on the effects of (4) .................. (5) ................. the atmosphere, doctors have proved that air pollution causes lung (6) .............. .

The gases from the exhausts of cars have also increased air pollution in (7)............ cities. The lead in patrol produces a poisonous gas which (8) ................ collects in busy streets (9) .......... high buildings. Children live in areas (10) ............. there is a lot of lead in the atmosphere can not (11) ........... as quickly as (12) ............. children and are clumsy when they use their hands.

There are other long term (13) ................ of pollution. If the gases in the atmosphere continue to increase, the earth's climate may become (14) ..............

A lot of the ice near the poles may melt and may cause (15) .......... floods

Từ gợi ý: in, warmer, other, most, which, effects, by, cause, surrounded, serious, limiting, diseases, often, think, where

2
17 tháng 9 2018

Air pollution is a (1) cause of ill health in human being. In a lot of countries there are laws (2) limiting the amount of smoke (3) which factories can produce. Athough there isn't enough information on the effects of (4)smoke (5) in the atmosphere, doctors have proved that air pollution causes lung (6) diseases.
The gases from the exhausts of cars have also increased air pollution in (7) most cities. The lead in petrol produces a poisonous gas which (8) often collects in busy streets (9)surrounded by high buildings. Children live in areas (10) where there is a lot of lead in the atmosphere can not(11) think as quicky as (12) other children and are clumsy when they use their hands.
There are other long term (13) effects of pollution. If the gases in the atmosphere continue to increase, the earth's climate may become (14) warmer. A lot of the ice near the poles may melt and may cause (15) serious floods.

17 tháng 9 2018

VIII. Dùng từ gợi ý điền từ vào chỗ trống

Air pollution is a (1) .....cause........ of ill health in human being. In a lot of countries there are laws (2) ....limiting.......... the amout of smoke (3) ....which....... factories can produce. Although there isn't enough information on the effects of (4) ..........smoke........ (5) ......in........... the atmosphere, doctors have proved that air pollution causes lung (6) .....diseases ......... .

The gases from the exhausts of cars have also increased air pollution in (7)......most...... cities. The lead in patrol produces a poisonous gas which (8) ........often........ collects in busy streets (9) ...surrounded by....... high buildings. Children live in areas (10) ......where....... there is a lot of lead in the atmosphere can not (11) ......think..... as quickly as (12) .....other........ children and are clumsy when they use their hands.

There are other long term (13) ........effects........ of pollution. If the gases in the atmosphere continue to increase, the earth's climate may become (14) ........warmer......

A lot of the ice near the poles may melt and may cause (15) ....serious...... floods

Từ gợi ý: in, warmer, other, most, which, effects, by, cause, surrounded, serious, limiting, diseases, often, think, where

True/false Air pollution is a cause of ill-health in human beings. In a lot of countries there are laws limiting the amount of smoke which factories can produce. Although there isn`t enough information on the effects of smoke in the atmosphere, doctors have proved that air pollution causes lung diseases. The gases from the exhausts of cars have also increased air pollution in most cities. The lead in petrol produces a poisonous gas which often collects in busy streets surrounded...
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True/false

Air pollution is a cause of ill-health in human beings. In a lot of countries there are laws limiting the amount of smoke which factories can produce. Although there isn`t enough information on the effects of smoke in the atmosphere, doctors have proved that air pollution causes lung diseases.
The gases from the exhausts of cars have also increased air pollution in most cities. The lead in petrol produces a poisonous gas which often collects in busy streets surrounded by high buildings. Children who live in areas where there is a lot of lead in the atmosphere cannot think as quickly as other children and are clumsy when they use their hands.
There are other long-term effects of pollution. If the gases in the atmosphere continue to increase, the earth`s climate may become warmer. A lot of the air near the Poles may melt and may cause serious floods.

1. Air pollution accounts for ill- health in human beings

2. Many countries have passed laws limiting the amount of smoke produce by factories

3. Scientists have proved that smoke influences the atmosphere

4. Poisonous gases are often collected in busy streets surrounding by high buildings

5. Children who live in areas where there i a lot of lead in the atmosphere can think as quickly as other childen

6. Lead makes children living in those areas clumsy when they use theri hands

1
7 tháng 2 2018

True/false

Air pollution is a cause of ill-health in human beings. In a lot of countries there are laws limiting the amount of smoke which factories can produce. Although there isn`t enough information on the effects of smoke in the atmosphere, doctors have proved that air pollution causes lung diseases.
The gases from the exhausts of cars have also increased air pollution in most cities. The lead in petrol produces a poisonous gas which often collects in busy streets surrounded by high buildings. Children who live in areas where there is a lot of lead in the atmosphere cannot think as quickly as other children and are clumsy when they use their hands.
There are other long-term effects of pollution. If the gases in the atmosphere continue to increase, the earth`s climate may become warmer. A lot of the air near the Poles may melt and may cause serious floods.

1. Air pollution accounts for ill- health in human beings T

2. Many countries have passed laws limiting the amount of smoke produce by factories T

3. Scientists have proved that smoke influences the atmosphere F

4. Poisonous gases are often collected in busy streets surrounding by high buildings T

5. Children who live in areas where there i a lot of lead in the atmosphere can think as quickly as other childen F

6. Lead makes children living in those areas clumsy when they use theri hands T

Read the paragraphs below and the summary which follows. (3ms) Air pollution is a cause of ill-health in human beings. In a lot of countries there are laws limiting the amount of smoke which factories can produce. Although there isn’t enuogh information on the effects of smoke in the atmosphere, doctors have proved that air pollution causes lung diseases. The gases from the exhausts of cars have also increased air pollution in most cities. The lead in petrol produces a poisonous gas which...
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Read the paragraphs below and the summary which follows. (3ms)

Air pollution is a cause of ill-health in human beings. In a lot of countries there are laws limiting the amount of smoke which factories can produce. Although there isn’t enuogh information on the effects of smoke in the atmosphere, doctors have proved that air pollution causes lung diseases.

The gases from the exhausts of cars have also increased air pollution in most cities. The lead in petrol produces a poisonous gas which often collects in busy streets surrounded by high buildings. Children who live in areas where there is a lot of lead in the atmosphere can’t think as quickly as other children and are clumsy when they use their hands.

There are other long-term effects of pollution. If the gases in the atmosphere continue to increase , the earth’s climate may become warmer. A lot of the ice near the Poles ma melt and may cause serious floods.

* Complete the summary by writing the correct word in each blank (write one word only.)

Air ___________ (52) can make people ___________ (53). Consequently, some countries pass ____________ (54) to control the quantity of ___________ (55) in the air. Air pollution causes particular damage to the body by harming the ___________ (56). _____________ (57) should not be used in petrol because it is bad for children’s _____________ (58) and makes them clumsy in using their hands. Poisonous gas from ____________ (59) collects in those parts of cities where there are tall buildings. Pollution can also have an influence on the earth’s ____________ (60). The ice may melt near the North and South Poles, resulting in very bad ____________ (61).

2
16 tháng 3 2017

* Complete the summary by writing the correct word in each blank (write one word only.)

Air ______pollution_____ (52) can make people _____ unhealthy ______ (53). Consequently, some countries pass _____laws_______ (54) to control the quantity of ____smoke_______ (55) in the air. Air pollution causes particular damage to the body by harming the _____ lung______ (56). ______Lead_______ (57) should not be used in petrol because it is bad for children’s ____brain_________ (58) and makes them clumsy in using their hands . Poisonous gas from _____cars_______ (59) collects in those parts of cities where there are tall buildings. Pollution can also have an influence on the earth’s _____climate_______ (60). The ice may melt near the North and South Poles, resulting in very bad ____floods________ (61).

16 tháng 3 2017

* Complete the summary by writing the correct word in each blank (write one word only.)

Air (52) pollution can make people (53) ill. Consequently, some countries pass (54) laws to control the quantity of (55) smoke in the air. Air pollution causes particular damage to the body by harming the (56) lungs. (57) Lead should not be used in petrol because it is bad for children’s (58) health and makes them clumsy in using their hands. Poisonous gas from (59) lead collects in those parts of cities where there are tall buildings. Pollution can also have an influence on the earth’s (60) climate. The ice may melt near the North and South Poles, resulting in very bad (61) floods.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught...
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught (3)________and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________ wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________, unless we can solve this problem.

Question 1

 

A. threat

B. problem

C. danger

D. vanishing

2
28 tháng 12 2018

Đáp án: C

Giải thích: ta có cụm “be in danger” (a) gặp nguy hiểm

11 tháng 4 2023

C

There are 10 blanks in the passage. Use the words (phrases) given in the box to fill in the blanks. Use only one word (phrase) in each blank. There are five extra words (phrases) which you do not need to use. (2 ms) place, easily, alike, bury, carry, contain, imitated, interfered, most, prevent, protect, role, serve, surviving, tamed Man probably could not live without the help of animals. The (1)______ of animals in the balance of nature ranks as their most important service to man. ...
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There are 10 blanks in the passage. Use the words (phrases) given in the box to fill in the blanks. Use only one word (phrase) in each blank. There are five extra words (phrases) which you do not need to use. (2 ms)

place, easily, alike, bury, carry, contain, imitated, interfered, most, prevent, protect, role, serve, surviving, tamed

Man probably could not live without the help of animals. The (1)______ of animals in the balance of nature ranks as their most important service to man.

Animals also (2)______ man by supplying him with many foods and other useful products. Without animals, man would have no meat, milk, eggs, or honey; or wool, fur, or silk.

For thousands of years, man has caused changes in the animal kingdom. He has (3)______ many kinds of animals and used them for food and clothing. He has killed or driven away animals that once attacked him or (4)______ with his use of land. Today, he tried to (5)______ many kinds of animals that are in danger of dying out.

Like man, (6)______ plants depend on animals for many of their basic needs. Without animals, many plants could not (7)______ reproduce. For example, many plants with flowers depend on bees and other insects to (8)______ their pollen from plant to plant. Many oak trees grow from acorns that squirrels (9)______ and then forget, or from acorns that deer step on and push deep into the soil. Birds often fly from one (10)______ to another with seeds clinging to their feet. The seeds may sprout a great distance from the parent plants.

2
22 tháng 12 2017

There are 10 blanks in the passage. Use the words (phrases) given in the box to fill in the blanks. Use only one word (phrase) in each blank. There are five extra words (phrases) which you do not need to use. (2 ms)

place, easily, alike, bury, carry, contain, imitated, interfered, most, prevent, protect, role, serve, surviving, tamed

Man probably could not live without the help of animals. The (1)___role___ of animals in the balance of nature ranks as their most important service to man.

Animals also (2)___serve___ man by supplying him with many foods and other useful products. Without animals, man would have no meat, milk, eggs, or honey; or wool, fur, or silk.

For thousands of years, man has caused changes in the animal kingdom. He has (3)___tamed___ many kinds of animals and used them for food and clothing. He has killed or driven away animals that once attacked him or (4)___interfered___ with his use of land. Today, he tried to (5)___protect___ many kinds of animals that are in danger of dying out.

Like man, (6)___most___ plants depend on animals for many of their basic needs. Without animals, many plants could not (7)___easily___ reproduce. For example, many plants with flowers depend on bees and other insects to (8)__carry____ their pollen from plant to plant. Many oak trees grow from acorns that squirrels (9)___burry___ and then forget, or from acorns that deer step on and push deep into the soil. Birds often fly from one (10)___place___ to another with seeds clinging to their feet. The seeds may sprout a great distance from the parent plants.

22 tháng 12 2017

There are 10 blanks in the passage. Use the words (phrases) given in the box to fill in the blanks. Use only one word (phrase) in each blank. There are five extra words (phrases) which you do not need to use. (2 ms)

place, easily, alike, bury, carry, contain, imitated, interfered, most, prevent, protect, role, serve, surviving, tamed

Man probably could not live without the help of animals. The (1)___role___ of animals in the balance of nature ranks as their most important service to man.

Animals also (2)___serve___ man by supplying him with many foods and other useful products. Without animals, man would have no meat, milk, eggs, or honey; or wool, fur, or silk.

For thousands of years, man has caused changes in the animal kingdom. He has (3)___tamed___ many kinds of animals and used them for food and clothing. He has killed or driven away animals that once attacked him or (4)___interfered___ with his use of land. Today, he tried to (5)___protect___ many kinds of animals that are in danger of dying out.

Like man, (6)___most___ plants depend on animals for many of their basic needs. Without animals, many plants could not (7)___easily___ reproduce. For example, many plants with flowers depend on bees and other insects to (8)___carry___ their pollen from plant to plant. Many oak trees grow from acorns that squirrels (9)___bury___ and then forget, or from acorns that deer step on and push deep into the soil. Birds often fly from one (10)___place___ to another with seeds clinging to their feet. The seeds may sprout a great distance from the parent plants.

Dịch văn bản sau sang Tiếng Việt: We live in a dynamic world, and habitats are always undergoing changes at all sorts of levels. However, natural changes usually occur at a slow pace so that impacts on individual species tend to be slight - at least in the short term When the pace of change is greatly accelerated, there may be no time for individual species to react to new circumstances, and the effects can be disastrous. Briefly, this is the reason that rapid habitat loss is...
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Dịch văn bản sau sang Tiếng Việt:

We live in a dynamic world, and habitats are always undergoing changes at all sorts of levels. However, natural changes usually occur at a slow pace so that impacts on individual species tend to be slight - at least in the short term
When the pace of change is greatly accelerated, there may be no time for individual species to react to new circumstances, and the effects can be disastrous. Briefly, this is the reason that rapid habitat loss is regarded as the chief cause of species endangerment, and there is no force more powerful in this regard than human beings. To some extent, every part of the earth has been affected by human activities, especially during this past century. This applies on virtually every scale, from the loss of microbes in soils that once supported tropical forests, to the extinction of fish and other aquatic species in polluted freshwater habitats, to changes in global climate caused by the release of greenhouse gases. From the perspective of an individual human lifetime, such changes may be hard to detect and their effects on individual species may be hard to predict. But the lesson is clear enough. For example, although many countries have had plans to grow many tropical forests, they are highly susceptible to destruction because the soils in which they grow are poor in available nutrients. Centuries may be required to bring back a forest that was cut down or burnt out in the space of a few years. Many of the world's severely threatened animals and plants live in such forests, and it is certain that huge numbers of them will disappear if present rates of forest loss continue. Habitats in the world are unchangeable and fixedly exist.

2
7 tháng 10 2018

Chúng ta sống trong một thế giới năng động, và môi trường sống luôn luôn trải qua những thay đổi ở tất cả các cấp độ. Tuy nhiên, những thay đổi tự nhiên thường xảy ra ở tốc độ chậm để tác động đến từng loài có xu hướng nhỏ - ít nhất là trong ngắn hạn
Khi tốc độ thay đổi được tăng tốc đáng kể, có thể không có thời gian để các loài cá thể phản ứng với hoàn cảnh mới, và các hiệu ứng có thể là thảm họa. Tóm lại, đây là lý do khiến mất môi trường sống nhanh chóng được coi là nguyên nhân chính gây nguy hiểm cho loài, và không có lực lượng nào mạnh hơn trong vấn đề này so với con người. Ở một mức độ nào đó, mọi phần của trái đất đã bị ảnh hưởng bởi các hoạt động của con người, đặc biệt là trong thế kỷ qua. Điều này áp dụng trên hầu hết mọi quy mô, từ việc mất vi khuẩn trong đất đã từng hỗ trợ rừng nhiệt đới, đến sự tuyệt chủng của cá và các loài thủy sinh khác trong môi trường nước ngọt bị ô nhiễm, thay đổi khí hậu toàn cầu gây ra bởi việc thải khí nhà kính. Từ quan điểm của một đời người, những thay đổi như vậy có thể khó phát hiện và ảnh hưởng của chúng đối với từng loài có thể khó dự đoán. Nhưng bài học là đủ rõ ràng. Ví dụ, mặc dù nhiều quốc gia đã có kế hoạch trồng nhiều khu rừng nhiệt đới, chúng rất dễ bị phá hủy bởi vì các loại đất mà chúng phát triển rất nghèo trong các chất dinh dưỡng sẵn có. Nhiều thế kỷ có thể được yêu cầu mang lại một khu rừng bị cắt giảm hoặc bị đốt cháy trong không gian vài năm. Nhiều loài động vật và thực vật bị đe dọa nghiêm trọng trên thế giới sống trong các khu rừng như vậy, và chắc chắn rằng một số lượng lớn chúng sẽ biến mất nếu tỷ lệ mất rừng hiện tại tiếp tục. Môi trường sống trên thế giới là không thể thay đổi và tồn tại cố định.

P/S:ggdịch is freehiha~

7 tháng 10 2018

chụy Google dịch đọc méo hiểu gì nên mới lết xác lên đây đấy -.-