The rise in energy ___________ has led to a reduction of fossil fuels that the world must use. A. redundancy B. consumption C. efficiency D. suitability

LQ

Lê Quỳnh Anh

28 tháng 1 2019

The rise in energy ___________ has led to a reduction of fossil fuels that the world must use.

A. redundancy

B. consumption

C. efficiency

D. suitability

#Mẫu giáo

1

DH

Dương Hoàn Anh

28 tháng 1 2019

Đáp án B

energy consumption (n): sự tiêu thụ năng lượng.

Các đáp án còn lại:

A. redundancy (n): sự thừa thãi

C. efficiency (n): sự năng suất, hiệu quả.

D. suitability (n): sự tích hợp.

Dịch: Sự gia tăng về tiêu thụ năng lượng đã dẫn tới sự suy giảm nhiên liệu hóa thạch mà thế giới đang phải sử dụng.

Đúng(0)

LQ

Lê Quỳnh Anh

29 tháng 3 2019

The rise in energy ___________ has led to a reduction of fossil fuels that the world must use.

A. redundancy

B. consumption

C. efficiency

D. suitability

#Mẫu giáo

1

DH

Dương Hoàn Anh

29 tháng 3 2019

Đáp án B

Giải thích:

Redundancy: sự thừa thãi

Consumption: sự tiêu thụ

Efficiency: sự hiệu quả

Suitability: sự phù hợp

Energy consumption: lượng năng lượng tiêu thụ

Dịch: Sự gia tăng về lượng năng lượng tiêu thụ đã dẫn đến việc giảm thiểu nguồn nhiên liệu hóa thạch mà thế giới phải sử dụng

Đúng(0)

KS

kem sữa

11 tháng 2 2023

We need energy to live and work. Our major source of energy is oil. Oil is one kind of fossil fuels. The amount of fossil fuels in the world is limited. Therefore, we must save it, and at the same time we must find new sources of energy. Geothermal heat and nuclear power are alternative sources of energy. They can give us electricity. Other alternative sources are the sun, the wave, and the water. These sources are not only unlimited and available but also clean and safe to the environment....

Đọc tiếp

We need energy to live and work. Our major source of energy is oil. Oil is one kind of fossil fuels. The amount of fossil fuels in the world is limited. Therefore, we must save it, and at the same time we must find new sources of energy. Geothermal heat and nuclear power are alternative sources of energy. They can give us electricity. Other alternative sources are the sun, the wave, and the water. These sources are not only unlimited and available but also clean and safe to the environment. People should develop and use them more and more in the future.

1. What do we need energy for? →

2. What is our major source of energy? →

3. Why must we save fossil fuels? → 4. What are the advantages of the other alternative sources of energy? → 5. Should people develop and use the alternative sources of energy more and more in the future?

→

#Tiếng anh lớp 11

1

B

Bagel

11 tháng 2 2023

1 We need energy to live and work.

2 Our major source of energy is oil.

3 Because The amount of fossil fuels in the world is limited.

4 These sources are not only unlimited and available but also clean and safe to the environment.

5 Yes, they should

Đúng(0)

TG

Trần gia linh

2 tháng 7 2021

As the use of alternative energy sources increases, the consumption of the Earth's fossil fuels will also decrease. One watt of energy that is used by solar cells is one less watt used by power plants burning oil or coal. If society hopes to see the next generation have the resources needed to heat homes and drive cars, alternative energy sources are needed today.Fossil fuel is the most common source of energy today, but it is not considered clean energy. There are various other sources of...

Đọc tiếp

As the use of alternative energy sources increases, the consumption of the Earth's fossil fuels will also decrease. One watt of energy that is used by solar cells is one less watt used by power plants burning oil or coal. If society hopes to see the next generation have the resources needed to heat homes and drive cars, alternative energy sources are needed today.

Fossil fuel is the most common source of energy today, but it is not considered clean energy. There are various other sources of alternative energy that must be incorporated if the next generations are expected to have energy. Water, wind, the internal heat of the Earth, and the sun are all being used to create energy. Geothermal energy and solar energy are more common. Homes are being heated and cooled, cars are being driven, and electricity is used all from these various alternative sources of energy. All are examples of clean energy, which is better for the environment because it does not cause pollution.

Read the passage and decide if these statements are True or False.

	Đúng	Sai
1. The consumption of fossil fuels will decrease since alternative sources are used more.
2. Alternative energy sources are not necessary today.
3. Fossil fuel is considered clean energy.
4. Water, wind, the sun are common alternative sources of energy.
5. Clean energy is the energy that does not cause pollution.

#Tiếng anh lớp 7

3

DT

Đỗ Thanh Hải

CTVVIP

2 tháng 7 2021

1 T

2 F

3 F

4 T

5 T

Đúng(3)

KN

Khánh Nguyễn

2 tháng 7 2021

1. T

2. F

3. F

4. T

5. T

Đúng(1)

TG

Trần gia linh

10 tháng 6 2021

As the use of alternative energy sources increases, the consumption of the Earth's fossil fuels will also decrease. One watt of energy that is used by solar cells is one less watt used by power plants burning oil or coal. If society hopes to see the next generation have the resources needed to heat homes and drive cars, alternative energy sources are needed today.Fossil fuel is the most common source of energy today, but it is not considered clean energy. There are various other sources of...

Đọc tiếp

As the use of alternative energy sources increases, the consumption of the Earth's fossil fuels will also decrease. One watt of energy that is used by solar cells is one less watt used by power plants burning oil or coal. If society hopes to see the next generation have the resources needed to heat homes and drive cars, alternative energy sources are needed today.

Fossil fuel is the most common source of energy today, but it is not considered clean energy. There are various other sources of alternative energy that must be incorporated if the next generations are expected to have energy. Water, wind, the internal heat of the Earth, and the sun are all being used to create energy. Geothermal energy and solar energy are more common. Homes are being heated and cooled, cars are being driven, and electricity is used all from these various alternative sources of energy. All are examples of clean energy, which is better for the environment because it does not cause pollution.

Read the passage and decide if these statements are True or False.

	Đúng	Sai
1. The consumption of fossil fuels will decrease since alternative sources are used more.
2. Alternative energy sources are not necessary today.
3. Fossil fuel is considered clean energy.
4. Water, wind, the sun are common alternative sources of energy.
5. Clean energy is the energy that does not cause pollution.

#Tiếng anh lớp 7

2

DT

Đỗ Thanh Hải

CTVVIP

10 tháng 6 2021

1 T

2 F

3 F

4 T

5 T

Đúng(2)

MN

Minh Nhân

10 tháng 6 2021

Khi việc sử dụng các nguồn năng lượng thay thế tăng lên, việc tiêu thụ nhiên liệu hóa thạch của Trái đất cũng sẽ giảm xuống. Một watt năng lượng được sử dụng bởi pin mặt trời bằng một watt ít hơn được sử dụng bởi các nhà máy điện đốt dầu hoặc than. Nếu xã hội hy vọng thấy thế hệ tiếp theo có các nguồn lực cần thiết để sưởi ấm nhà cửa và lái xe ô tô, thì ngày nay cần có các nguồn năng lượng thay thế.

Nhiên liệu hóa thạch là nguồn năng lượng phổ biến nhất hiện nay, nhưng nó không được coi là năng lượng sạch. Nhiều nguồn năng lượng thay thế khác phải được kết hợp nếu các thế hệ tiếp theo được mong đợi có năng lượng. Nước, gió, nhiệt bên trong Trái đất và mặt trời đều được sử dụng để tạo ra năng lượng. Năng lượng địa nhiệt và năng lượng mặt trời phổ biến hơn. Những ngôi nhà đang được sưởi ấm và làm mát, những chiếc ô tô đang được chạy, và điện được sử dụng tất cả từ những nguồn năng lượng thay thế khác nhau này. Tất cả đều là những ví dụ về năng lượng sạch, tốt hơn cho môi trường vì không gây ô nhiễm.

Đọc đoạn văn và quyết định xem những nhận định này là Đúng hay Sai.

ĐúngSai

1. Việc tiêu thụ nhiên liệu hóa thạch sẽ giảm do các nguồn thay thế được sử dụng nhiều hơn.	T
2. Các nguồn năng lượng thay thế ngày nay không cần thiết.	F
3. Nhiên liệu hóa thạch được coi là năng lượng sạch.	F
4. Nước, gió, mặt trời là những nguồn năng lượng thay thế phổ biến.	T
5. Năng lượng sạch là năng lượng không gây ô nhiễm.
T

Đúng(1)

LQ

Lê Quỳnh Anh

23 tháng 4 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 37. In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered that they could use vegetable oils and animal fats in lieu of gathered or cut wood. Charcoal gave off more intensive heat than wood and was more easily obtainable than organic fats. The Greeks first began to use coal for metal smelting in the 4th century, but it did not come into extensive use until the Industrial Revolution.

In the 1700s, at the beginning of the Industrial Revolution, most energy used in the United States and other nations undergoing industrialization was obtained from perpetual and renewable sources, such as wood, water streams, domesticated animal labor, and wind. These were predominantly locally available supplies. By mid-1800s, 91 percent of all commercial energy consumed in the United States and European countries was obtained from wood. However, at he beginning of the 20th century, coal became a major energy source and replaced wood in industrializing countries. Although in most regions and climate zones wood was more readily accessible than coal, the latter represents a more concentrated source of energy. In 1910, natural gas and oil firmly replaced coal as the main source of fuel because they are lighter and, therefore, cheaper to transport. They burned more cleanly than coal and polluted less. Unlike coal, oil could be refined to manufacture liquid fuels for vehicles, a very important consideration in the early 1900s, when the automobile arrived on the scene.

By 1984, non-renewable fossil fuels, such as oil, coal, and natural gas, provided over 82 percent of the commercial and industrial energy used in the world. Small amounts of energy were derived from nuclear fission, and the remaining 16 percent came from burning direct perpetual and renewable fuels, such as biomass. Between 1700 and 1986, a large number of countries shifted from the use of energy from local sources to a centralized generation of hydropower and solar energy converted to electricity. The energy derived from non-renewable fossil fuels has been increasingly produced in one location and transported to another, as is the case with most automobile fuels. In countries with private, rather than public transportation, the age of non-renewable fuels has created a dependency on a finite resource that will have to be replaced.

Alternative fuel sources are numerous, and shale oil and hydrocarbons are just two examples. The extraction of shale oil from large deposits in Asian and European regions has proven to be labor consuming and costly. The resulting product is sulfur-and nitrogen-rich, and large scale extractions are presently prohibitive. Similarly, the extraction of hydrocarbons from tar sands in Alberta and Utah is complex. Semi-solid hydrocarbons cannot be easily separated from the sandstone and limestone that carry them, and modern technology is not sufficiently versatile for a large-scale removal of the material. However, both sources of fuel may eventually be needed as petroleum prices continue to rise and limitations in fossil fuel availability make alternative deposits more attractive.

The author of the passage implies that in the 1700s, sources of energy were

A. used for commercial purposes

B. used in various combination

C. not derived from mineral deposits

D. it could be converted to automobile fuel.

#Mẫu giáo

1

DH

Dương Hoàn Anh

23 tháng 4 2018

Đáp án C

Tác giả của đoạn văn ngụ ý rằng trong những năm 1700, các nguồn năng lượng đã được

A. dùng cho mục đích thương mại

B. được sử dụng trong các kết hợp khác nhau

C. không bắt nguồn từ các mỏ khoáng sản

D. có thể chuyển thành nhiên liệu ô tô.

Đúng(0)

LQ

Lê Quỳnh Anh

12 tháng 3 2017

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions. In the course of history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive people in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered that they...

Đọc tiếp

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions.

In the course of history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive people in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered that they could use vegetable oils and animal fats in lieu of gathered or cut wood. Charcoal gave off a more intensive heat than wood and was more easily obtainable than organic fats. The Greeks first began to use coal for metal smelting in the 4^th century, but it did not come into extensive use until the Industrial Revolution.

In the 1700s, at the beginning of the Industrial Revolution, most energy used in the United States and other nations undergoing industrialization was obtained from perpetual and renewable sources, such as wood, water streams, domesticated animal labor, and wind. These were predominantly locally available supplies. By mid-1800s, 91 percent of all commercial energy consumed in the United States and European countries was obtained from wood. However, at the beginning of the 20^th century, coal became a major energy source and replaced wood in industrializing countries. Although in most regions and climate zones wood was more readily accessible than coal, the latter represents a more concentrated source of energy. In 1910, natural gas and oil firmly replaced coal as the main source of fuel because they are lighter and, therefore, cheaper to transport. They burned more cleanly than coal and polluted less. Unlike coal, oil could be refined to manufacture liquid fuels for vehicles, a very important consideration in the early 1900s, when the automobile arrived on the scene.

By 1984, nonrenewable fossil fuels, such as oil, coal, and natural gas, provided over 82 percent of the commercial and industrial energy used in the world. Small amounts of energy were derived from nuclear fission, and the remaining 16 percent came from burning direct perpetual and renewable fuels, such as biomass. Between 1700 and 1986, a large number of countries shifted from the use of energy from local sources to a centralized generation of hydropower and solar energy converted to electricity. The energy derived from nonrenewable fossil fuels has been increasingly produced in one location and transported to another, as is the case with most automobile fuels. In countries with private, rather than public transportation, the age of nonrenewable fuels has created a dependency on a finite resource that will have to be replaced

According to the passage, the sources of fossil fuels will have to be replaced because

A. they need to be transported

B. they are not efficient

C. their use is centralized

D. their supply is limited

#Mẫu giáo

1

DH

Dương Hoàn Anh

12 tháng 3 2017

Đáp án là D

Theo bài đọc, các nguồn nhiên liệu hóa thạch sẽ phải được thay thế bởi vì

A. chúng cần được vận chuyển

B. chúng không hiệu quả

C. việc sử dụng của chúng được tập trung hóa

D. sự cung cấp của nó giới hạn

Dẫn chứng: In countries with private, rather than public transportation, the age of nonrenewable fuels has created a dependency on a finite resource that will have to be replaced.

Đúng(0)

LQ

Lê Quỳnh Anh

24 tháng 9 2017

Read the following passage and write the letter A, B, C or D on the top of the first page to indicate the correct answer to each of the questions.In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered...

Đọc tiếp

Read the following passage and write the letter A, B, C or D on the top of the first page to indicate the correct answer to each of the questions.

In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered that they could use vegetable oils and animal fats in lieu of gathered or cut wood. Charcoal gave off more intensive heat than wood and was more easily obtainable than organic fats. The Greeks first began to use coal for metal smelting in the 4th century, but it did not come into extensive use until the Industrial Revolution.

In the 1700s, at the beginning of the Industrial Revolution, most energy used in the United States and other nations undergoing industrialization was obtained from perpetual and renewable sources, such as wood, water streams, domesticated animal labor, and wind. These were predominantly locally available supplies. By mid-1800s, 91 percent of all commercial energy consumed in the United States and European countries was obtained from wood. However, at he beginning of the 20th century, coal became a major energy source and replaced wood in industrializing countries. Although in most regions and climate zones wood was more readily accessible than coal, the latter represents a more concentrated source of energy. In 1910, natural gas and oil firmly replaced coal as the main source of fuel because they are lighter and, therefore, cheaper to transport. They burned more cleanly than coal and polluted less. Unlike coal, oil could be refined to manufacture liquid fuels for vehicles, a very important consideration in the early 1900s, when the automobile arrived on the scene.

By 1984, non-renewable fossil fuels, such as oil, coal, and natural gas, provided over 82 percent of the commercial and industrial energy used in the world. Small amounts of energy were derived from nuclear fission, and the remaining 16 percent came from burning direct perpetual and renewable fuels, such as biomass. Between 1700 and 1986, a large number of countries shifted from the use of energy from local sources to a centralized generation of hydropower and solar energy converted to electricity. The energy derived from non-renewable fossil fuels has been increasingly produced in one location and transported to another, as is the case with most automobile fuels. In countries with private, rather than public transportation, the age of non-renewable fuels has created a dependency on a finite resource that will have to be replaced.

Alternative fuel sources are numerous, and shale oil and hydrocarbons are just two examples. The extraction of shale oil from large deposits in Asian and European regions has proven to be labor consuming and costly. The resulting product is sulfur-and nitrogen-rich, and large scale extractions are presently prohibitive. Similarly, the extraction of hydrocarbons from tar sands in Alberta and Utah is complex. Semi-solid hydrocarbons cannot be easily separated from the sandstone and limestone that carry them, and modern technology is not sufficiently versatile for a large-scale removal of the material. However, both sources of fuel may eventually be needed as petroleum prices continue to rise and limitations in fossil fuel availability make alternative deposits more attractive.
Question:The author of the passage implies that in the 1700s, sources of energy were

A. used for commercial purposes

B. used in various combination

C. not derived from mineral deposits

D. it could be converted to automobile fuel

#Mẫu giáo

1

DH

Dương Hoàn Anh

24 tháng 9 2017

Đáp án C

Kiến thức: Đọc hiểu

Giải thích:

Tác giả của đoạn văn ngụ ý rằng trong những năm 1700, các nguồn năng lượng đã được

A. dùng cho mục đích thương mại B. được sử dụng trong các kết hợp khác nhau

C. không bắt nguồn từ các mỏ khoáng sản D. có thể chuyển thành nhiên liệu ô tô.

Dẫn chứng: In the 1700s, at the beginning of the Industrial Revolution, most energy used in the United States and other nations undergoing industrialization was obtained from perpetual and renewable sources, such as wood, water streams, domesticated animal labor, and wind.

Đúng(0)

LQ

Lê Quỳnh Anh

17 tháng 12 2017

Read the following passage and write the letter A, B, C or D on the top of the first page to indicate the correct answer to each of the questions.In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered...

Đọc tiếp

Read the following passage and write the letter A, B, C or D on the top of the first page to indicate the correct answer to each of the questions.

In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered that they could use vegetable oils and animal fats in lieu of gathered or cut wood. Charcoal gave off more intensive heat than wood and was more easily obtainable than organic fats. The Greeks first began to use coal for metal smelting in the 4th century, but it did not come into extensive use until the Industrial Revolution.

In the 1700s, at the beginning of the Industrial Revolution, most energy used in the United States and other nations undergoing industrialization was obtained from perpetual and renewable sources, such as wood, water streams, domesticated animal labor, and wind. These were predominantly locally available supplies. By mid-1800s, 91 percent of all commercial energy consumed in the United States and European countries was obtained from wood. However, at he beginning of the 20th century, coal became a major energy source and replaced wood in industrializing countries. Although in most regions and climate zones wood was more readily accessible than coal, the latter represents a more concentrated source of energy. In 1910, natural gas and oil firmly replaced coal as the main source of fuel because they are lighter and, therefore, cheaper to transport. They burned more cleanly than coal and polluted less. Unlike coal, oil could be refined to manufacture liquid fuels for vehicles, a very important consideration in the early 1900s, when the automobile arrived on the scene.

By 1984, non-renewable fossil fuels, such as oil, coal, and natural gas, provided over 82 percent of the commercial and industrial energy used in the world. Small amounts of energy were derived from nuclear fission, and the remaining 16 percent came from burning direct perpetual and renewable fuels, such as biomass. Between 1700 and 1986, a large number of countries shifted from the use of energy from local sources to a centralized generation of hydropower and solar energy converted to electricity. The energy derived from non-renewable fossil fuels has been increasingly produced in one location and transported to another, as is the case with most automobile fuels. In countries with private, rather than public transportation, the age of non-renewable fuels has created a dependency on a finite resource that will have to be replaced.

Alternative fuel sources are numerous, and shale oil and hydrocarbons are just two examples. The extraction of shale oil from large deposits in Asian and European regions has proven to be labor consuming and costly. The resulting product is sulfur-and nitrogen-rich, and large scale extractions are presently prohibitive. Similarly, the extraction of hydrocarbons from tar sands in Alberta and Utah is complex. Semi-solid hydrocarbons cannot be easily separated from the sandstone and limestone that carry them, and modern technology is not sufficiently versatile for a large-scale removal of the material. However, both sources of fuel may eventually be needed as petroleum prices continue to rise and limitations in fossil fuel availability make alternative deposits more attractive.
Question:It can be inferred from the passage that in the early 20th centurgy, energy was obtained primarily from

A. Fossil fuels

B. Nuclear fission

C. Hydraulic and solar sources

D. Burning biomass

#Mẫu giáo

1

DH

Dương Hoàn Anh

17 tháng 12 2017

Đáp án A

Kiến thức: Đọc hiểu

Giải thích:

Có thể suy luận từ đoạn văn rằng trong giai đoạn đầu của thế kỉ 20, năng lượng thu được chủ yếu từ

A. Nhiên liệu hóa thạch B. Phân hạch hạt nhân

C. Nguồn thủy lực và năng lượng mặt trời D. Đốt khí ga

Dẫn chứng: However, at the beginning of the 20th century, coal became a major energy source and replaced wood in industrializing countries.

Đúng(0)

LQ

Lê Quỳnh Anh

4 tháng 5 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 37. In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

In the course of its history, human inventions have dramatically increased the average amount of energy available for use per person. Primitive peoples in cold regions burned wood and animal dung to heat their caves, cook food, and drive off animals by fire. The first step toward the developing of more efficient fuels was taken when people discovered that they could use vegetable oils and animal fats in lieu of gathered or cut wood. Charcoal gave off more intensive heat than wood and was more easily obtainable than organic fats. The Greeks first began to use coal for metal smelting in the 4th century, but it did not come into extensive use until the Industrial Revolution.

In the 1700s, at the beginning of the Industrial Revolution, most energy used in the United States and other nations undergoing industrialization was obtained from perpetual and renewable sources, such as wood, water streams, domesticated animal labor, and wind. These were predominantly locally available supplies. By mid-1800s, 91 percent of all commercial energy consumed in the United States and European countries was obtained from wood. However, at he beginning of the 20th century, coal became a major energy source and replaced wood in industrializing countries. Although in most regions and climate zones wood was more readily accessible than coal, the latter represents a more concentrated source of energy. In 1910, natural gas and oil firmly replaced coal as the main source of fuel because they are lighter and, therefore, cheaper to transport. They burned more cleanly than coal and polluted less. Unlike coal, oil could be refined to manufacture liquid fuels for vehicles, a very important consideration in the early 1900s, when the automobile arrived on the scene.

By 1984, non-renewable fossil fuels, such as oil, coal, and natural gas, provided over 82 percent of the commercial and industrial energy used in the world. Small amounts of energy were derived from nuclear fission, and the remaining 16 percent came from burning direct perpetual and renewable fuels, such as biomass. Between 1700 and 1986, a large number of countries shifted from the use of energy from local sources to a centralized generation of hydropower and solar energy converted to electricity. The energy derived from non-renewable fossil fuels has been increasingly produced in one location and transported to another, as is the case with most automobile fuels. In countries with private, rather than public transportation, the age of non-renewable fuels has created a dependency on a finite resource that will have to be replaced.

Alternative fuel sources are numerous, and shale oil and hydrocarbons are just two examples. The extraction of shale oil from large deposits in Asian and European regions has proven to be labor consuming and costly. The resulting product is sulfur-and nitrogen-rich, and large scale extractions are presently prohibitive. Similarly, the extraction of hydrocarbons from tar sands in Alberta and Utah is complex. Semi-solid hydrocarbons cannot be easily separated from the sandstone and limestone that carry them, and modern technology is not sufficiently versatile for a large-scale removal of the material. However, both sources of fuel may eventually be needed as petroleum prices continue to rise and limitations in fossil fuel availability make alternative deposits more attractive.

It can be inferred from the passage that in the early 20th centurgy, energy was obtained primarily from

A. Fossil fuels

B. Nuclear fission

C. Hydraulic and solar sources

D. Burning biomass

#Mẫu giáo

1

DH

Dương Hoàn Anh

4 tháng 5 2019

Đáp án A

Có thể suy luận từ đoạn văn rằng trong giai đoạn đầu của thế kỉ 20, năng lượng thu được chủ yếu từ

A. Nhiên liệu hóa thạch

B. Phân hạch hạt nhân

C. Nguồn thủy lực và năng lượng mặt trời

D. Đốt khí ga

Dẫn chứng: However, at the beginning of the 20th century, coal became a major energy source and replaced wood in industrializing countries.

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