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28 tháng 4 2017

Traveling in the Future

These days, if you want to travel from New York to Beijing, the flight takes about 16 hours. You also have to wait at the airport, and sometimes you have to transfer onto a different airplane. If you add all of that extra time, the trip takes at least 20 hours. But in the future, the trip from New York to Beijing might only take two hours.

Right now, a private company is developing something called ET3. ET3 stands for “evacuated tube transport technology”. Here is how it works. A tube goes all the way from New York to Beijing. The tube is only a few meters wide. Capsules move through the tube. Six people can sit in one capsule. The capsules use electricity instead of gasoline. For international travel, the capsules can travel at about 6,500 kilometers per hour. That is much faster than airplane - most modern airplanes usually only fly at about 800 kilometers per hour.

So how is this possible? How can these capsules travel so fast? The answer is that there is no air inside the tube. When airplanes fly, they have to move through the air. The air slows the airplanes down. Because there is no air in the ET3 tubes, the capsules are able to move at a very high speed. Besides, the capsules are quite light. They only weigh 183 kilograms.

There are other advantages to ET3. Because it uses electricity, it is quite clean. In addition, it is much quieter than airplanes and cars. Finally, ET3 tubes and capsules don’t require very much building material.

Of course, ET3 doesn’t exist yet. The technology is still being developed. Developers still have to solve a lot of problems. The biggest problem is that right now, ET3 would be far too expensive. In order to make ET3 cheaper, we will need much better technology.

It is exciting to think of how ET3 will change travel in the future. Maybe someday, you will be able to have lunch in New York and dinner in Beijing.

I. Rewrite the sentences with the same meaning. (Viêt lại câu sao cho nghĩa của câu không đổi ) 1 The distance from Ha Noi to Thanh Hoa City is about 100 kilometres. → It is about 2 Although Quang Hai -footballer is so young, he plays football beautifully. Despite 3.My father lived in small village when he was a child. → My father used to 4. What is the dıstance between Thanh Hoa and Ha Noi city? How far 5. I often walked to school when I was a student I used. 6. In...
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I. Rewrite the sentences with the same meaning. (Viêt lại câu sao cho nghĩa của câu không đổi ) 1 The distance from Ha Noi to Thanh Hoa City is about 100 kilometres.

→ It is about

2 Although Quang Hai -footballer is so young, he plays football beautifully.

Despite

3.My father lived in small village when he was a child.

→ My father used to 4.

What is the dıstance between Thanh Hoa and Ha Noi city?

How far

5. I often walked to school when I was a student

I used.

6. In spite of being so young, Tien Dung goalkeeper performs excellently.

→Although..

7. What is the distance between Vinh and Ha Noi city?

→ How

8 I often walked to school when I was a student.

I used..

9. Although they are short, they still love playing sports.

→ In spite of...

10. We will use less electricity in the future

Less electricity

II. Change the sentences into the passive voice. (Chuyên các câu sau sang câu bị đông)

1. We will use less electricity in the future.

Less electricity

2 The students in my school will use public transport when travelling long distances

. Public transport.

3.1 will turn off the lights when leaving a room or going to bed

The lights...

4. Wind power will offer a great deal of energy next century.

A great deal of energy

5. We will use sources of energy more effectively for our future

. Sources of energy

6 People in the countryside will increase the use of biogas for cooking.

The use of biogas

7. They will build a bydropower station in the North of the country next decade,

A hydropower station 8.

We will solve the problem of energy shortage by tsing solar energy.

he problem of energy shortage

1
4 tháng 2 2020

I. Rewrite the sentences with the same meaning. (Viêt lại câu sao cho nghĩa của câu không đổi )

1 The distance from Ha Noi to Thanh Hoa City is about 100 kilometres.

→ It is about 100 kilometers from Ha Noi to Thanh Hoa City

2 Although Quang Hai -footballer is so young, he plays football beautifully.

Despite being so young, Quang Hai plays football beautifully

Or :

Despite the fact that Quang Hai is so young, he plays football beautifully

3.My father lived in small village when he was a child.

→ My father used to live in small village when he was a child

4. What is the dıstance between Thanh Hoa and Ha Noi city?

How far is it from Thanh Hoa to Ha Noi City?

5. I often walked to school when I was a student

I used. to walk to school when I was a student

6. In spite of being so young, Tien Dung goalkeeper performs excellently.

→Although.. Tien Dung goalkeeper is so young, he performs excellently

7. What is the distance between Vinh and Ha Noi city?

→ How far is it from Vinh to Ha Noi city?

8 I often walked to school when I was a student.

I used.. to walk to school/ go to school on foot when I was a student

9. Although they are short, they still love playing sports.

→ In spite of... being short, they still love playing sports.

Or :

In spite of their shortness, they still love playing sports.

Or:

In spite of thte fact that they are short, they still love playing sports

10. We will use less electricity in the future

Less electricity will be used by us in the future

II. Change the sentences into the passive voice. (Chuyên các câu sau sang câu bị đông)

1. We will use less electricity in the future.

Less electricity will be used ( by us) in the future

2 The students in my school will use public transport when travelling long distances

. Public transport. will be used by the students in my school when travelling along distances.

3.1 will turn off the lights when leaving a room or going to bed

The lights... will be turned off by me when I leave a room or go to bed

4. Wind power will offer a great deal of energy next century.

A great deal of energy will be offered by wind power next century

5. We will use sources of energy more effectively for our future

. Sources of energy will be used more effectively for our future

6 People in the countryside will increase the use of biogas for cooking.

The use of biogas for cooking will be increased by people in the countryside

7. They will build a bydropower station in the North of the country next decade,

A hydropower station will be built in the North of the country next decade

8.We will solve the problem of energy shortage by tsing solar energy.

The problem of energy shortage will be solved by using solar energy

4 tháng 2 2020

❤cảm ơn bạn nháTEST YOURSELF 1

13 tháng 4 2019

Vietnam is the second largest motorcycle ownership in the world after Taiwan. According to statistics in early 2016, the number of registered motorcycles in Vietnam is over 37 million. During the peak hours of the weekends, holidays, the number of motorbikes is too many. Traffic jams on the day are also common in the city, during working hours. The street dust and loud whistles will make you tired about road traffic in Vietnam. Investment in road traffic in Vietnam is a lot but the quality is very poor, Some routes just need light rain that will be damaged or flooded.

Not only there are many strange signs or the name of the road. The direction is super small, put in the position difficult to see …but also the problem of misspellings. Vietnam’s traffic problems are very complex. The traffic police in Vietnam are very large and powerful: traffic police, traffic inspectors, police officers,… but accidents Vietnam still ranked in the top 10 countries of traffic accidents in the world.

The sense of participation in traffic of Vietnamese is poor. Vietnamese people go fast, cross the red light. When being stuck at congestion, most people ride their motorbikes on the sidewalk rather than waiting, or constantly use horns to hasten riders in the front, even shouting at them from time to time. Vietnamese often don’t obey the traffic lights or signs. Children are taught about traffic laws while adults are breaking it. Now the government gives much new strict law to improve the present posture. The government also has a lot of projects to upgrade the road, widen the road more and more. Build more highways and tunnels to reduce traffic jam. The visitor comes to Vietnam will have some exciting experiences when entering traffic in Vietnam.

Some travelers have their traffic tips on how to cross the road in Vietnam: forget all the standard rules to cross the street, look at the vehicles that are heading towards you, just move slowly to cross the road because no one will crash into you, the foreigners will feel crossed the road like a game of adventure but you are very easy to do it

19 tháng 3 2017

Each sentence below contain an error.Underline it and write the correct answer in the space provice

1 . next week new glass will be installing in the window to stop hea t escapin. installing => installed

2. at this time in next two month, we are going to have a tree solar shower. are going to have => will be having

3. they will be organize a workshop about clean and safe energy sources next wednes day. be organize => organize

4. we will be replacing coal and natural gas for heating by solar energy at the end of next year. by => with

5. our house will provide with biogas and low energy light bulbs next month. provide => be provided

Check True or False Energy is very important in modern life. People use energy to run machines, heat and cool their homes, cook, give light, transport people and products from place to place. Most energy nowadays comes from fossil fuels such as petroleum, coal and natural gas. However, burning fossil fuels causes pollution. Also, if we don’t find new kinds of energy, we will use up all the fossil fuels in the twenty –first century. Scientists are working to find other kinds of energy for...
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Check True or False

Energy is very important in modern life. People use energy to run machines, heat and cool their homes, cook, give light, transport people and products from place to place. Most energy nowadays comes from fossil fuels such as petroleum, coal and natural gas. However, burning fossil fuels causes pollution. Also, if we don’t find new kinds of energy, we will use up all the fossil fuels in the twenty –first century. Scientists are working to find other kinds of energy for the future. What might these sources of energy be?

____ 29/ Energy is used to produce a lot of electrical things.

____ 30/ Energy comes from natural resources.

____ 31/ burning fossil fuels causes pollution.

____ 32/ Everyone tries their best to find other kinds of energy for the future.

(33-36) Rewrite the sentences so that they are nearest in meaning to the sentence printed before them.

33/Chi didn’t drink anything. She was very thirsty.

-->Although ____________________________________________________

34/ Don’t forget to buy me a newspaper.

->Remember ___________________________________________________

35/ I suggest that we should have a mechanic check our motorbike once a month.

--> I suggest _____________________________________________________

36/The film Titanic is on at Rex Cinema. Have you seen it?

--> Have you _____________________________________________________

1
9 tháng 1 2018

Check True or False

Energy is very important in modern life. People use energy to run machines, heat and cool their homes, cook, give light, transport people and products from place to place. Most energy nowadays comes from fossil fuels such as petroleum, coal and natural gas. However, burning fossil fuels causes pollution. Also, if we don’t find new kinds of energy, we will use up all the fossil fuels in the twenty –first century. Scientists are working to find other kinds of energy for the future. What might these sources of energy be?

__T__ 29/ Energy is used to produce a lot of electrical things.

__F__ 30/ Energy comes from natural resources.

_T___ 31/ burning fossil fuels causes pollution.

__T__ 32/ Everyone tries their best to find other kinds of energy for the future.

(33-36) Rewrite the sentences so that they are nearest in meaning to the sentence printed before them.

33/Chi didn’t drink anything. She was very thirsty.

-->Although ___Chi was very thirsty ,she didn’t drink anything__

34/ Don’t forget to buy me a newspaper.

->Remember ________ to buy me a newspaper._______

35/ I suggest that we should have a mechanic check our motorbike once a month.

--> I suggest _having a mechanic check our motorbike once a month

36/The film Titanic is on at Rex Cinema. Have you seen it?

--> Have you ________seen the film Titanic on at Rex Cinema____

8 tháng 8 2017

I. Supply the correct verb forms to complete the sentences :

1. The children enjoy........being allowed..............( allow ) to stay up late when there is something special on TV

2. If other alternative sources of energy........isn't found............( not find ), the current sources of energy will run out

3. While we........were fishing...........( fish ) , someone came to the house and.......left............( leave ) this note

4.I wish I.......had known..........( know ) you needed the book. I could have brought it for you in India

5. Hung has a right to know. He ought to..........be told............ ( tell ) the news immediately

II/ Read the text and choose the best answers A, B, C or D. to the questions. (1m) Most of the countries in the world have searched for alternative sources of energy in various directions. Many communities are burning garbage and other biological waste products to produce electricity. Converting waste products to gases or oil is also an efficient way to dispose of waste. Experimental work is being done to derive synthetic fuels from coal, oil, shale and coal tars. But today that...
Đọc tiếp

II/ Read the text and choose the best answers A, B, C or D. to the questions. (1m)

Most of the countries in the world have searched for alternative sources of energy in various directions. Many communities are burning garbage and other biological waste products to produce electricity. Converting waste products to gases or oil is also an efficient way to dispose of waste.

Experimental work is being done to derive synthetic fuels from coal, oil, shale and coal tars. But today that process has proven expensive. Other experiments are underway to harness power with giant windmills. Geothermal power heat from the earth is also being tested.

Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in the United States, but today it supplies only five percent. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of the temperature differences in ocean water to produce energy.

1. Which is the best title of the passage?

A. The use of water productions for energy

B. Efficient ways of disposing of waste

C. The search for Alternative Sources of Energy

D. New Discoveries in Geothermal Power

2. Fifty years ago one third of the electricity in the United States was provided by_________.

A. wind B. waste products C. oil D. water

3. In the second paragraph, the phrase “synthetic fuels” could be best replaced by which of the following _________.

A. biological fuels B. artificial made fuels

C. low burning fuels D. fast burning fuels

4. Which of the following is NOT mentioned in the passage as an alternative source of energy?

A. electricity B. burning of garbage

C. geothermal power D. synthetics fuels

5. According to the author, the impracticability of using coal, oil shale and coal tars as sources of energy is due to _________.

A. their being money consuming B. their being time consuming

C. the scarcity of sources D. the lack of technology

2
4 tháng 1 2020

1. C

2.

3. B

4. A

5. A

4 tháng 1 2020

cau 2 la dap an nao

30 tháng 4 2017

Talk about the advantages and disadvantages of a type of energy

There are lots advantages as well as disadvantages entailed with coal energy and how it can produce electricity. About advantages: Coal energy is very affordable due to its stable price unlike any other forms of energy in the market. The abundance of coal energy is in a large number.It is also easy to burn. Coal energy is a renewable form of energy.Reliability is entailed and presented in this form of energy.Aside from its reliability, coal energy is also inexpensive unlike any other sources of energy.This form of energy is producing high energy upon its combustion process.The power generation scale of coal is great that makes it possible for building a range of sizes of generation plants. Coal is used to build power stations in different parts of the world since it is a fossil fuel as long as there are huge amounts of it. And disavantages: Coal energy is producing tremendous amount of carbon emissions that results in climate change and global warming.Coal burning is considered not environmental friendly due to the production of harmful by-products like nitrogen, carbon dioxide and sulfur dioxide.
3. Coal burning can cause pollution to the environment like acid rain. Coal energy is fast depleting because many people consume a large amount of it It is also ruining the ecosystem and environment and putting many people’s lives in danger especially miners. Underground mining is very hazardous because cave-ins and explosions are common.Unstoppable damages could occur when mining coals.