Tham gia Khóa học hè 2024 trên OLM ngay tại đây!

Miễn phí ĐGNL đầu hè, làm bài ngay tại đây

📢 Lịch livestream khóa học hè tuần 3, tham gia ngay

K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

Mua vip
Tất cả Toán Vật lý Hóa học Sinh học Ngữ văn Tiếng anh Lịch sử Địa lý Tin học Công nghệ Giáo dục công dân Âm nhạc Mỹ thuật Tiếng anh thí điểm Lịch sử và Địa lý Thể dục Khoa học Tự nhiên và xã hội Đạo đức Thủ công Quốc phòng an ninh Tiếng việt Khoa học tự nhiên
DP
đỗ phúc huy
25 tháng 7 2018

bendy lights

Every year, more than 2,000 drivers in Britain have a 21) ........................................ (COLLIDE) with a street lamppost – many ending 22) ........................................ (FATAL). Now, a British company has come up with an idea that may bring about a dramatic 23) ........................................ (REDUCE) in the number of deaths and serious 24) ........................................ (INJURY) which such accidents cause. The plan is to create a bendy lamppost. When a car hits a rigid metal lamppost, the vehicle is brought to a sudden halt, and it is this abrupt 25) ........................................ (LOSE) of speed that can have such tragic 26) ........................................ (CONSEQUENT) for the passengers. The material used in the new lamppost is made of a type of plastic, which has been reinforced with long strands of glass fibre, giving it the same 27) ................................... (STRONG) as metal but greater 28) ........................................ (FLEXIBLE). If adriver should have the 29) ........................................ (FORTUNE) to hit one of these posts, then the design will allow the column to bend so that the car will ride up over it.The manufacturers claim that the new lamppost has already saved lives. One was hit by a car travelling at more than 140 kilometres an hour, and the driver walked away 30) .................................... (HARM) apart from a bruised knee.

#Tiếng anh lớp 12
1
NN
Ngố ngây ngô
16 tháng 8 2018

1. Collisions

3. Reduction

4. Injured

7. Strength

9. Fortunate

Đúng(0)
MH
minh hong
21 tháng 2 2020
ead the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions. Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But...
Đọc tiếp
ead the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions. Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby town. Neither of the farmhouses is attached to a farm these days; the land has been sold and is managed by somebody in an office somewhere who has little interest in the village itself. There are a few new houses, but they have no local character; you can see the same style anywhere in the country. The whole of the village, in fact, has been tidied up so much that it has become nothing more than just another suburb. 1. When the writer revisited his village, he quickly realized that _____________. A. the village changed a lot in appearance B. everything has almost changed C. all the pretty cottages as well as the farmhouses have been built D. the residents of the village are all commuters 2. Neither of the farmhouses _______________ A. has a connection with a farm B. has been sold C. is attached to the farmers. D. is managed by the commuters 3. The word “managed” in the line 8 can be best replaced by ______________. A. controlled B. spent C. used D. taken 4. According to the writer, __________________. A. the village now has no local character B. all the new houses are the same style C. the village is tidier than it used to D. the village has become nothing but a suburb 5. Which of the following is NOT MENTIONED in the passage? A. The writer has visited the village several times before. B. The writer revisited his village last week. C. In fact, the village has changed much. D. The village nowadays has become another suburb.
#Tiếng anh lớp 12
0
MH
minh hong
22 tháng 2 2020
Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby...
Đọc tiếp
Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby town. Neither of the farmhouses is attached to a farm these days; the land has been sold and is managed by somebody in an office somewhere who has little interest in the village itself. There are a few new houses, but they have no local character; you can see the same style anywhere in the country. The whole of the village, in fact, has been tidied up so much that it has become n othing more than just another suburb. 1. When the writer revisited his village, he quickly realized that _____________. A. the village changed a lot in appearance B. everything has almost changed C. all the pretty cottages as well as the farmhouses have been built D. the residents of the village are all commuters 2. Neither of the farmhouses ________________. A. has a connection with a farm B. has been sold C. is attached to the farmers. D. is managed by the commuters 3. The word “managed” in the line 8 can be best replaced by ______________. A. controlled B. spent C. used D. taken 4. According to the writer, __________________. A. the village now has no local character B. all the new houses are the same style C. the village is tidier than it used to D. the village has become nothing but a suburb 5. Which of the following is NOT MENTIONED in the passage? A. The writer has visited the village several times before. B. The writer revisited his village last week. C. In fact, the village has changed much. D. The village nowadays has become another suburb.
#Tiếng anh lớp 12
0
MH
minh hong
22 tháng 2 2020
Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby...
Đọc tiếp
Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby town. Neither of the farmhouses is attached to a farm these days; the land has been sold and is managed by somebody in an office somewhere who has little interest in the village itself. There are a few new houses, but they have no local character; you can see the same style anywhere in the country. The whole of the village, in fact, has been tidied up so much that it has become nothing more than just another suburb. 1. When the writer revisited his village, he quickly realized that _____________. A. the village changed a lot in appearance B. everything has almost changed C. all the pretty cottages as well as the farmhouses have been built D. the residents of the village are all commuters 2. Neither of the farmhouses ________________. A. has a connection with a farm B. has been sold C. is attached to the farmers. D. is managed by the commuters 3. The word “managed” in the line 8 can be best replaced by ______________. A. controlled B. spent C. used D. taken 4. According to the writer, __________________. A. the village now has no local character B. all the new houses are the same style C. the village is tidier than it used to D. the village has become nothing but a suburb 5. Which of the following is NOT MENTIONED in the passage? A. The writer has visited the village several times before. B. The writer revisited his village last week. C. In fact, the village has changed much. D. The village nowadays has become another suburb.
#Tiếng anh lớp 12
0
CD
Corn dog
28 tháng 7 2017
Nowadays in the news you can read a lot about biotechnology and the controversies about it and perhaps you ask yourself what it is exactly. Well, this article is going to give you a brief history of the field of biotechnology and show you that, although the word “biotechnology” was first used in 1919, we have been using biotechnology for many thousands of years in ways that are completely uncontroversial. It will also look at the more modern developments which have started intense debate. ...
Đọc tiếp
Nowadays in the news you can read a lot about biotechnology and the controversies about it and perhaps you ask yourself what it is exactly. Well, this article is going to give you a brief history of the field of biotechnology and show you that, although the word “biotechnology” was first used in 1919, we have been using biotechnology for many thousands of years in ways that are completely uncontroversial. It will also look at the more modern developments which have started intense debate. When you are drinking a cold beer on a hot day, or eating a delicious cheese sandwich, you can thank biotechnology for the pleasure you are experiencing. That’s right! Beer, bread and cheese are all produced using biotechnology. Perhaps a definition will be useful to understand how. A standard definition is that biotechnology (or biotech for short) is the application of science and engineering to the direct or indirect use of living organisms. And as you know, the food and drink above are all produced by the fermentation of micro-organisms. In beer, the yeast multiplies as it eats the sugars in the mixture and turns them into alcohol and CO2. This ancient technique was first used in Egypt to make bread and wine around 4000BC! Antibiotics are used to prevent and treat diseases, especially those caused by bacteria. They are natural substances that are created by bacteria and fungi. The first antibiotic was made in China in about 500BC – to cure boils. In 1928 Alexander Fleming discovered penicillin and it was considered a medical miracle. Modern research is looking at the creation of super-antibodies which can kill bacteria and viruses inside the cells that house them. Our modern consumer society produces a lot of waste which needs to be disposed of safely and without harmful end products. Environmental biotechnology can help. Indeed, the use of bacteria to treat sewage was first practiced in 1914 in Manchester, England. Vermiculture or using worms to treat waste is another environmentally-friendly practice and the end product is a natural fertiliser. Bacteria have even been developed to help with problems such as oil spills. They convert crude oil and gasoline into non-toxic substances such as carbon dioxide, water and oxygen and help create a cleaner, healthier environment. These examples of biotechnology are accepted by most people. However, the discovery of the DNA structure by Watson and Crick in 1953 was the beginning of the modern era of genetics and the following areas of biotech are very controversial. Read on… The genetic modification of plants and crops has been in practice for many years. This involves changing the genetic code of these plants so that they are more resistant to bad conditions like drought, floods and frost. Supporters of GM food say that it can offer the consumer better quality, safety and taste and for over a decade Americans have been eating GM food. However, things are very different in Europe where genetically modified food is very strictly regulated and regarded with deep suspicion by the public. GM food has even been called “Frankenfood” in the press, a term inspired by the novel Frankenstein by Mary Shelley. There is a great cultural divide between America and Europe over whether such food is safe to eat and will not harm the environment and the discussion is still in progress. 1997 saw the birth of Dolly the sheep, the first animal cloned from an adult cell. This was a remarkable achievement which created world-wide debate on the ethical issues surrounding cloning. International organisations such as the European parliament, UNESCO and WHO all declared that human cloning is both morally and legally wrong. However, we need to make a distinction between reproductive cloning and therapeutic cloning. Nowadays the idea of reproductive cloning – creating a copy of another person - is no longer interesting for researchers. Instead therapeutic cloning is creating excitement in the biotech world. Key to this technique is stem cells, which are master cells that have the potential to become any other kind of cell in the body e.g. nerve cells, blood, heart muscle or even brain cells. Stem cells themselves have generated a lot of controversy as it was believed that only human embryos could provide them. However, it now appears that adult stem cells offer the same possibility. This would mean that a patient who suffered a heart attack could provide doctors with his adult stem cells which could then be implanted back into his heart and used to create heart muscle, replacing the muscle that was damaged. As the genetic code is identical, there would be no problem of the body rejecting the implant as, unfortunately, happens with organ transplants. In the future, biotechnologists hope that stem cells could be used to grow entire organs. In this way biotechnology offers the hope of revolutionising medical treatment. In this brief overview of the history of biotechnology we have jumped from making bread to making human organs - an enormous leap- and it is clear that these modern practices raise many controversial issues. However, despite the debate, we can imagine that as biotechnology has been around for many years, it will still be around for some time to come - but who knows where it will take us? Questions: After reading, choose the best answer for the following questions 1. What is the main topic of the article? Brief history and modern developments of biotechnology Benefit of biotechnology Modern research in biotechnology 2. What does the pronoun "IT" in the first paragraph refer to? Biotechnology The article The word "Biotechnology" 3. Which products were first made with fermentation of micro-organisms? Beer, bread and cheese Bread and wine Beer and cheese Decide whether the statement below is True or False. 4. Alexander Fleming discovered super-antibodies which can kill bacteria and viruses inside the cells that house them. TrueFalse 5. GM food is easily available in the U.S. and Europe. TrueFalse 6.Researchers believe that adult stem cells could be used to create body parts. TrueFalse
#Tiếng anh lớp 12
1
HT
Huy Thắng Nguyễn
28 tháng 7 2017

Nowadays in the news you can read a lot about biotechnology and the controversies about it and perhaps you ask yourself what it is exactly. Well, this article is going to give you a brief history of the field of biotechnology and show you that, although the word “biotechnology” was first used in 1919, we have been using biotechnology for many thousands of years in ways that are completely uncontroversial. It will also look at the more modern developments which have started intense debate. When you are drinking a cold beer on a hot day, or eating a delicious cheese sandwich, you can thank biotechnology for the pleasure you are experiencing. That’s right! Beer, bread and cheese are all produced using biotechnology. Perhaps a definition will be useful to understand how. A standard definition is that biotechnology (or biotech for short) is the application of science and engineering to the direct or indirect use of living organisms. And as you know, the food and drink above are all produced by the fermentation of micro-organisms. In beer, the yeast multiplies as it eats the sugars in the mixture and turns them into alcohol and CO2. This ancient technique was first used in Egypt to make bread and wine around 4000BC! Antibiotics are used to prevent and treat diseases, especially those caused by bacteria. They are natural substances that are created by bacteria and fungi. The first antibiotic was made in China in about 500BC – to cure boils. In 1928 Alexander Fleming discovered penicillin and it was considered a medical miracle. Modern research is looking at the creation of super-antibodies which can kill bacteria and viruses inside the cells that house them. Our modern consumer society produces a lot of waste which needs to be disposed of safely and without harmful end products. Environmental biotechnology can help. Indeed, the use of bacteria to treat sewage was first practiced in 1914 in Manchester, England. Vermiculture or using worms to treat waste is another environmentally-friendly practice and the end product is a natural fertiliser. Bacteria have even been developed to help with problems such as oil spills. They convert crude oil and gasoline into non-toxic substances such as carbon dioxide, water and oxygen and help create a cleaner, healthier environment. These examples of biotechnology are accepted by most people. However, the discovery of the DNA structure by Watson and Crick in 1953 was the beginning of the modern era of genetics and the following areas of biotech are very controversial. Read on… The genetic modification of plants and crops has been in practice for many years. This involves changing the genetic code of these plants so that they are more resistant to bad conditions like drought, floods and frost. Supporters of GM food say that it can offer the consumer better quality, safety and taste and for over a decade Americans have been eating GM food. However, things are very different in Europe where genetically modified food is very strictly regulated and regarded with deep suspicion by the public. GM food has even been called “Frankenfood” in the press, a term inspired by the novel Frankenstein by Mary Shelley. There is a great cultural divide between America and Europe over whether such food is safe to eat and will not harm the environment and the discussion is still in progress. 1997 saw the birth of Dolly the sheep, the first animal cloned from an adult cell. This was a remarkable achievement which created world-wide debate on the ethical issues surrounding cloning. International organisations such as the European parliament, UNESCO and WHO all declared that human cloning is both morally and legally wrong. However, we need to make a distinction between reproductive cloning and therapeutic cloning. Nowadays the idea of reproductive cloning – creating a copy of another person - is no longer interesting for researchers. Instead therapeutic cloning is creating excitement in the biotech world. Key to this technique is stem cells, which are master cells that have the potential to become any other kind of cell in the body e.g. nerve cells, blood, heart muscle or even brain cells. Stem cells themselves have generated a lot of controversy as it was believed that only human embryos could provide them. However, it now appears that adult stem cells offer the same possibility. This would mean that a patient who suffered a heart attack could provide doctors with his adult stem cells which could then be implanted back into his heart and used to create heart muscle, replacing the muscle that was damaged. As the genetic code is identical, there would be no problem of the body rejecting the implant as, unfortunately, happens with organ transplants. In the future, biotechnologists hope that stem cells could be used to grow entire organs. In this way biotechnology offers the hope of revolutionising medical treatment. In this brief overview of the history of biotechnology we have jumped from making bread to making human organs - an enormous leap- and it is clear that these modern practices raise many controversial issues. However, despite the debate, we can imagine that as biotechnology has been around for many years, it will still be around for some time to come - but who knows where it will take us?

Questions:

After reading, choose the best answer for the following questions

1. What is the main topic of the article?

Brief history and modern developments of biotechnology

Benefit of biotechnology

Modern research in biotechnology

2. What does the pronoun "IT" in the first paragraph refer to?

Biotechnology

The article

The word "Biotechnology"

3. Which products were first made with fermentation of micro-organisms?

Beer, bread and cheese

Bread and wine

Beer and cheese

Decide whether the statement below is True or False.

4. Alexander Fleming discovered super-antibodies which can kill bacteria and viruses inside the cells that house them.

TrueFalse

5. GM food is easily available in the U.S. and Europe.

TrueFalse

6.Researchers believe that adult stem cells could be used to create body parts.

TrueFalse

Đúng(0)
HG
Hermione Granger
10 tháng 6 2018
Fill in the blanK: living in a modern World may have its advantages but it(1)............. has its disadvantages that one disadvantages of the modern way of life which stands(2)............. from the rest is the negative influence cars have(3)............. The environment. Today, all developed societies face a(4)........... range of problems Caused by cars and(5).........vehicles. These include air and noise pollution,(6)...........traffic and the ever growing numbers in f roads in our cities....
Đọc tiếp

Fill in the blanK: living in a modern World may have its advantages but it(1)............. has its disadvantages that one disadvantages of the modern way of life which stands(2)............. from the rest is the negative influence cars have(3)............. The environment. Today, all developed societies face a(4)........... range of problems Caused by cars and(5).........vehicles. These include air and noise pollution,(6)...........traffic and the ever growing numbers in f roads in our cities. Major cities around the world face considerable environmental damage (7)............ of this and are in need of serious measures to reverse this trend.

How did we end (8)..........with such a problem? There are no simple answers(9)............. this question and no serious effort has been made to find either.it is about (10)...........,however, that our generation got serious (11)...........this issue. People must be willing to stand (12).......... environmental groups and make any effort necessary to change the situation. Many Environmentalists Believe that we could help by using our(13)......sense. Car poolling for instance could be a solution to the problem.this simple program calls for people to share their cars with fellow workers to and from work got a lot of interest has been shown (14).......car poolling and other more ambitious programmes are plan for the future
#Tiếng anh lớp 12
2
HH
Hắc Hường
10 tháng 6 2018
  1. also
  2. out
  3. on
  4. wide
  5. other
  6. congested / heavy / busy
  7. a result / a rule
  8. up
  9. to
  10. time
  11. about
  12. support / join
  13. good
  14. over
Đúng(0)
HG
Hermione Granger
10 tháng 6 2018

Giup mik voi!!! Can gap

Đúng(0)
DM
Dương Minh
30 tháng 1 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.   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.   The explosion in mobile phone use around the...
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.

   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

   The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

   On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

   What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

   As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

Question: According to the passage, cellphones are very popular with young people because _______.

A. they make them look more stylish

B. they are worrying

C. they are a means of communication

D. they are considered unusual
#Tiếng anh lớp 12
1
NH
Nguyen Hoang Hai
30 tháng 1 2019

Đáp án A.

Đúng(0)
DM
Dương Minh
4 tháng 2 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 of the questions.   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.   The explosion in mobile phone use around the...
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.

   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

   The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

   On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

   What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

   As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

Question: The word “potentially” in paragraph 4 is closet in meaning to _______.

A. possibly

B. privately

C. obviously

D. certainly
#Tiếng anh lớp 12
1
NH
Nguyen Hoang Hai
4 tháng 2 2017

Đáp án A.

Đúng(0)
DM
Dương Minh
19 tháng 7 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 of the questions.   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.   The explosion in mobile phone use around the...
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.

   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

   The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

   On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

   What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

   As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

Question: The word “they” in paragraph 2 refers to _______.

A. doctors

B. ideas

C. professionals

D. companies
#Tiếng anh lớp 12
1
NH
Nguyen Hoang Hai
19 tháng 7 2017

Đáp án D.

Đúng(0)
DM
Dương Minh
13 tháng 4 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.   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.   The explosion in mobile phone use around the...
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.

   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

   The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

   On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

   What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

   As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

Question: What could be the most suitable title for the passage?

A. Technological Innovations and Their Price

B. The Way Mobile Phones Work

C. Mobile Phones: A Must of Our Time

D. The Reasons Why Mobile Phones Are Popular
#Tiếng anh lớp 12
1
NH
Nguyen Hoang Hai
13 tháng 4 2019

Đáp án A.

Đúng(0)
Bảng xếp hạng
Tất cả Toán Vật lý Hóa học Sinh học Ngữ văn Tiếng anh Lịch sử Địa lý Tin học Công nghệ Giáo dục công dân Âm nhạc Mỹ thuật Tiếng anh thí điểm Lịch sử và Địa lý Thể dục Khoa học Tự nhiên và xã hội Đạo đức Thủ công Quốc phòng an ninh Tiếng việt Khoa học tự nhiên
  • Tuần
  • Tháng
  • Năm
Các khóa học có thể bạn quan tâm
Tổng thanh toán: 0đ (Tiết kiệm: 0đ)
Tới giỏ hàng
Yêu cầu VIP