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25 tháng 5 2017

Đáp án: A

28 tháng 6 2019

Đap án: B

30 tháng 3 2017

Đáp án: D

25 tháng 2 2019

Đáp án: B

30 tháng 11 2018

Đáp án: A

A. The environment is everything around us, both natural and made by man. A major problem in the world today is the destruction of the natural environment. This is a complicated problem. We burn fuel, and this causes air pollution. We throw away lastic bags, containing toys and other objects. These stay in the environment, they are not like paper or wood that slowly disappear. We have made thousands of new chemicals. Factories that make or use chemicals always have chemical wastes. These are...
Đọc tiếp

A. The environment is everything around us, both natural and made by man. A major problem in the world today is the destruction of the natural environment.

This is a complicated problem. We burn fuel, and this causes air pollution. We throw away lastic bags, containing toys and other objects. These stay in the environment, they are not like paper or wood that slowly disappear. We have made thousands of new chemicals. Factories that make or use chemicals always have chemical wastes. These are often poisonous, and they also stay in the environment.

Since 1945 several countries have been testing nuclear bombs in the air and underground. The explosions in the air cause nuclear fallout. The fallout causes cancer and kills animals and people. Nuclear power plants that make electricity also produce dangerous wastes and have accidents that can be very disastrous.

1. What is a big problem in the world today?

A. The development of the population. B. The destruction of the natural environment.

C. Bomb testing. D. Throwing away plastic bags.

2. What is the cause of the air pollution?

A. Fuel burning. B. Smoke from vehicles. C. Toys and other objects. D. Paper or wood.

3. What does the word "these" in the second paragraph refer to?

A. New chemicals. B. Factories. C. Chemical wastes. D. Poisons.

4. The nuclear fallout causes __________.

A. chemical wastes. B. cancer and kills animals and people.

C. water pollution. D. dangerous wastes.

5. What is the benefit of nuclear power?

A. Causing nuclear fallout. B. Producing dangerous.

C. Having accidents. D. Making electricity.

B. Thomas Edison was one of the greatest inventors of the world. He was responsible for more than one thousand inventions including the electric light bulb and the record player. He also created the world's first industrial research laboratory.

Edison was born in 1847 in Ohio, USA. When he was 10 years old, he set up asmall baloratory after he had read a science book his mother showed him. In 1869, he borrowed some money and began to make inventions. In 1876 he built a new laboratory so that he could spend all his time inventing. He planned to turn out minor inventions every ten days and "big trick" every six months. He developed many devices that brought great benefits to people's life. He once said that the value of an idea lay in the using of it. Edison died in 1931, after having aremarkably productive life.

1. Who was Thomas Edison?

2. When and where was he born?

3. What did he invent?

4. Did he build a new laboratory in 1876?

5. When did he die?

1
14 tháng 4 2019

A. The environment is everything around us, both natural and made by man. A major problem in the world today is the destruction of the natural environment.

This is a complicated problem. We burn fuel, and this causes air pollution. We throw away lastic bags, containing toys and other objects. These stay in the environment, they are not like paper or wood that slowly disappear. We have made thousands of new chemicals. Factories that make or use chemicals always have chemical wastes. These are often poisonous, and they also stay in the environment.

Since 1945 several countries have been testing nuclear bombs in the air and underground. The explosions in the air cause nuclear fallout. The fallout causes cancer and kills animals and people. Nuclear power plants that make electricity also produce dangerous wastes and have accidents that can be very disastrous.

1. What is a big problem in the world today?

A. The development of the population. B. The destruction of the natural environment.

C. Bomb testing. D. Throwing away plastic bags.

2. What is the cause of the air pollution?

A. Fuel burning. B. Smoke from vehicles. C. Toys and other objects. D. Paper or wood.

3. What does the word "these" in the second paragraph refer to?

A. New chemicals. B. Factories. C. Chemical wastes. D. Poisons.

4. The nuclear fallout causes __________.

A. chemical wastes. B. cancer and kills animals and people.

C. water pollution. D. dangerous wastes.

5. What is the benefit of nuclear power?

A. Causing nuclear fallout. B. Producing dangerous.

C. Having accidents. D. Making electricity.

B. Thomas Edison was one of the greatest inventors of the world. He was responsible for more than one thousand inventions including the electric light bulb and the record player. He also created the world's first industrial research laboratory.

Edison was born in 1847 in Ohio, USA. When he was 10 years old, he set up asmall baloratory after he had read a science book his mother showed him. In 1869, he borrowed some money and began to make inventions. In 1876 he built a new laboratory so that he could spend all his time inventing. He planned to turn out minor inventions every ten days and "big trick" every six months. He developed many devices that brought great benefits to people's life. He once said that the value of an idea lay in the using of it. Edison died in 1931, after having aremarkably productive life.

1. Who was Thomas Edison?

→Thomas Edison was one of the greatest inventors of the world

2. When and where was he born?

→Edison was born in 1847 in Ohio, USA

3. What did he invent?

→He invented the electric light bulb and the record player.

4. Did he build a new laboratory in 1876?

→Yes ,he did

5. When did he die?

→He died in 1931

17 tháng 6 2019

Đáp án: inventor

6 tháng 8 2019

They always announce the result ò the exam in June

The result of the exam is always announced in June.

Student don't speak english in class.(x2)

English isn't spoken in class.

My wallet was taken by a thief

A thief took my wallet.

Thomas Edison didn't invent the light bulb in 1867

The light bulb wasn't invented by Thomas Edison in 1867.

The bedrooms have been cleaned by the maid

The maid has cleaned the bedrooms.

The boys offred the girls some help.(x2)

The girls were offered some help.

some helps was offered to the girls.

5 tháng 7 2017

Đáp án: B

Light pollution Most of us are familiar with air, water, and land pollution, but did you know that light can also be a pollutant? Not many people know about this kind of pollution. Light pollution is the inappropriate or excessive use of artificial light and it can have serious environmental consequences for humans, wildlife, and our climate. Light pollution is a side effect of industrial civilization. Its sources include building exterior and interior lighting, advertising, commercial...
Đọc tiếp

Light pollution

Most of us are familiar with air, water, and land pollution, but did you know that light can also be a pollutant? Not many people know about this kind of pollution. Light pollution is the inappropriate or excessive use of artificial light and it can have serious environmental consequences for humans, wildlife, and our climate. Light pollution is a side effect of industrial civilization. Its sources include building exterior and interior lighting, advertising, commercial properties, offices, factories, streetlights, and illuminates sporting venues.

The fact is that much outdoor lighting used at night is inefficient, overly bright and, in many cases, completely unnecessary. This light, and the electricity used to create it, is being wasted by spilling into the sky, rather than focusing on the actual objects and areas that people want illuminated. For three billion years, life on Earth in a rhythm of light and dark that was created solely by the illumination of the Sun, Moon, and Stars. Now, artificial lights overpower the darkness and our cities glow at night. It disrupts the natural day-night pattern and shifts the delicate balance of our environment. Light pollution has negative impacts. It increases energy consumption, disrupts the ecosystem and wildlife and harms human health. Fortunately, concern about light pollution is rising dramatically. A growing number of sciences, homeowners, environmental groups and civic leaders are taking actions to restore the natural night.

0
13 tháng 5 2020

1. What source of light does not contribute to light pollution?

A. moonlight B. streetlight C. offices D. advertising

2. What is NOT true about light pollution according to the passage?

A. People are so familiar with it.

B. Is has many bad effects on humans and the environment.

C. It is the inappropriate or excessive use of natural light.

D. It is a side effect of industrial civilization.

3. What disrupts the natural day-night pattern as mentioned in the passage?

A. artificial light B. darkness C. our city D. night

4. Which is NOT mentioned as the negative impact of light pollution?

A. increasing the use of energy B. disrupting the ecosystem.

C. badly affect human health D. balancing the ecosystem

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