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Mọi người làm và giải thích ra hộ em nhé em xin cảm ơn ạ

SCHOOL LUNCH

Research has shown that over half the children in Britain who take their own lunches to school do not eat (1) ..............in the middle of the day. In Britain schools have to (2) ............meals at lunchtime. Children can (3) ..................to bring their own food or have lunch at the school canteen.

One shocking finding of this research is that school meals are (4) .............healthier than lunches prepared by parents. There are strict standards for the preparation of school meals, which have to include one portion of fruit and one of vegetables, as well as meat, a dairy item and starchy food like bread or pasta. Lunchboxes (5) .............by researchers contained sweet drinks, crisps and chocolate bars. Children consume twice as much sugar (6) .................they should at lunchtime.

The research will provide a better understanding of why the percentage of overweight students in Britain has (7)................... in the last decade. Unfortunately, the government cannot criticise parents, but it can remind them of the (8) ....................value of milk, fruit and vegetables. Small changes in their children’s diet can (9) ..................their future health. Children can easily develop bad eating (10) ..............at this age, and parents are the only ones who can prevent it.

1. A. appropriately      B. properly                  C. probably                  D. possibly

2. A. give                     B. provide                    C. make                       D. do

3. A. prefer                  B. manage                   C. want                        D. choose

4. A. many                   B. much                       C. more                       D. less

5. A. examined            B. found                       C. taken                       D. investigated

6 . A. so                       B. than                         C. as                            D. such

7. A. increased            B. expanded                C. extended                 D. added

8. A. positive               B. healthy                    C. nutritional               D. good

9. A. damage               B. predict                    C. destroy                    D. affect

10. A. behaviours        B. styles                       C. attitudes                  D. habits

Mọi người làm và giải thích ra hộ em nhé em xin cảm ơn ạ

 

1
18 tháng 5 2021

1b

2b

3d

4b

5a

6c

7a

8c

9d

10d

Mọi người làm và giải thích ra hộ em nhé em xin cảm ơn ạSCHOOL LUNCHResearch has shown that over half the children in Britain who take their own lunches to school do not eat (1) ..............in the middle of the day. In Britain schools have to (2) ............meals at lunchtime. Children can (3) ..................to bring their own food or have lunch at the school canteen.One shocking finding of this research is that school meals are (4) .............healthier than lunches...
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Mọi người làm và giải thích ra hộ em nhé em xin cảm ơn ạ

SCHOOL LUNCH

Research has shown that over half the children in Britain who take their own lunches to school do not eat (1) ..............in the middle of the day. In Britain schools have to (2) ............meals at lunchtime. Children can (3) ..................to bring their own food or have lunch at the school canteen.

One shocking finding of this research is that school meals are (4) .............healthier than lunches prepared by parents. There are strict standards for the preparation of school meals, which have to include one portion of fruit and one of vegetables, as well as meat, a dairy item and starchy food like bread or pasta. Lunchboxes (5) .............by researchers contained sweet drinks, crisps and chocolate bars. Children consume twice as much sugar (6) .................they should at lunchtime.

The research will provide a better understanding of why the percentage of overweight students in Britain has (7)................... in the last decade. Unfortunately, the government cannot criticise parents, but it can remind them of the (8) ....................value of milk, fruit and vegetables. Small changes in their children’s diet can (9) ..................their future health. Children can easily develop bad eating (10) ..............at this age, and parents are the only ones who can prevent it.

1. A. appropriately      B. properly                  C. probably                  D. possibly

2. A. give                     B. provide                    C. make                       D. do

3. A. prefer                  B. manage                   C. want                        D. choose

4. A. many                   B. much                       C. more                       D. less

5. A. examined            B. found                       C. taken                       D. investigated

6 . A. so                       B. than                         C. as                            D. such

7. A. increased            B. expanded                C. extended                 D. added

8. A. positive               B. healthy                    C. nutritional               D. good

9. A. damage               B. predict                    C. destroy                    D. affect

10. A. behaviours        B. styles                       C. attitudes                  D. habits

Mọi người làm và giải thích ra hộ em nhé em xin cảm ơn ạ

0
ead the passage and choose the best option to complete each of the blanks PROBLEMS OF WATCHING TELEVISION IN BRITAIN British parents are always complaining that their children spend too much time gluing to the telly and not enough (37)____ other activities like sports and reading. A survey recently carried out on people's viewing habits (38)____ not disapprove it. It shows that young people in Britain spend on (39)___ twenty three hours a week in front of the television, (40)_______ works out...
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ead the passage and choose the best option to complete each of the blanks

PROBLEMS OF WATCHING TELEVISION IN BRITAIN

British parents are always complaining that their children spend too much time gluing to the telly and not enough (37)____ other activities like sports and reading. A survey recently carried out on people's viewing habits (38)____ not disapprove it. It shows that young people in Britain spend on (39)___ twenty three hours a week in front of the television, (40)_______ works out at over three hours every day.

What is surprising, however, is the fact that the average adult watches even more: an incredible 28 hours a week. We seem to have become a nation of telly addicts. Just about (41)_______ household in the country has a television and over half have two or more.

According (42)___ the survey, people nowadays don't just watch television sitting in their living room, they watch it in the kitchen and in bed as well.

The Education Minister said a (43)___weeks ago that Britain's pupils should spend more time reading. Unfortunately, parents are not setting a good example: adults do (44)__ reading than young people. In fact, reading is (45)___ the bottom of their list of favorite pastimes. They would (46)____ listen to the radio, go to the cinema or hire a video to watch on their television at home.

0
TRANSLATE : Thankgiving Day is a holiday that Americans celebrate the honor of everything the country offered to their ancestors, who were among the first immigrants to the United States. When they first came to America, they saw that there were enough food and opportunity for everyone. They were even helped by the Indians, who taught them how to grow all kinds of new vegetables, such as corn and yams, or sweet potatoes. On Thanksgiving Day, it is traditional to eat a big meal together....
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TRANSLATE :

Thankgiving Day is a holiday that Americans celebrate the honor of everything the country offered to their ancestors, who were among the first immigrants to the United States. When they first came to America, they saw that there were enough food and opportunity for everyone. They were even helped by the Indians, who taught them how to grow all kinds of new vegetables, such as corn and yams, or sweet potatoes.

On Thanksgiving Day, it is traditional to eat a big meal together. Americans eat food that was found here by their ancestors. They usually eat turkey with sweet potatoes, Indian corn bread, and have pumpkin pie for dessert.

Every Thanksgiving Day, a giant parade is held by one of the most famous department stores in New York. It is an annual event. And at the end of the parade, children can even see Santa Claus, who is visiting from the North Pole. Santa Claus is invited to remind children and parent that Christmas is not far away.

1
8 tháng 1 2017

mình nhầm chút đây là tiếng anh lớp 6

Choose the item (A, B, C or D) that best completes each of the following sentences.   In 1988, for the first time in British history, a National Curriculum was introduced. The National Curriculum tells pupils which subjects they have to study, what they must learn and when they have to take assessment tests. [assessment: đánh giá]   Between the ages of 14 and 16, pupils study for their GCSE (General Certificate of Secondary Education) exams. Pupils must take English Language, Maths and...
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Choose the item (A, B, C or D) that best completes each of the following sentences.

   In 1988, for the first time in British history, a National Curriculum was introduced. The National Curriculum tells pupils which subjects they have to study, what they must learn and when they have to take assessment tests. [assessment: đánh giá]

   Between the ages of 14 and 16, pupils study for their GCSE (General Certificate of Secondary Education) exams. Pupils must take English Language, Maths and Science for GCSE, as well as a half GCSE in a foreign language and Technology. In addition, they must also be taught Physical Education, Religious Education and Sex Education, although they do not take exams in these subjects.

   At the age of 16, pupils can leave school. If pupils stay on, they usually take A (Advanced) levels, AS (Advanced Supplementary) level or GNVQs (Greater National Vocational Qualifications). It is quite common to combine, for example, two A levels with one AS level, or one A level with one GNVQ.

   Pupils taking A levels study traditional subjects, such as French, Physics or History. To go to university, pupils usually need two or three A levels.

   AS levels are the same standard as A levels, but only half of the content: AS level German pupils take the A-level German language exam, but do not take the A-level German Literature exam.

   GNVQs are vocational qualifications. Pupils usually take on GNVQ in subjects such as Business, Leisure and Tourism, Manufacturing, and Art and Design. One GVNQ (at advanced level) is equal to two A levels.

1. Britain began to have a National Curriculum_______

A. one hundred years ago

B. in the nineteenth century

C. in 1898

D. in 1988

1
19 tháng 9 2017

Đáp án D.

The little chefs Hilary Rose travels to Dorset, in the south of England, to investigate a cookery course for children. There must be something in the air in Dorset, because the last place you’d expect to fi nd children during the summer holidays is in the kitchen. Yet in a farmhouse, deep in the English countryside, that’s exactly where they are – on a cookery course designed especially for children. It’s all the idea of Anna Wilson, who wants to educate young children about cooking and eating...
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The little chefs Hilary Rose travels to Dorset, in the south of England, to investigate a cookery course for children. There must be something in the air in Dorset, because the last place you’d expect to fi nd children during the summer holidays is in the kitchen. Yet in a farmhouse, deep in the English countryside, that’s exactly where they are – on a cookery course designed especially for children. It’s all the idea of Anna Wilson, who wants to educate young children about cooking and eating in a healthy way. ‘I’m very keen to plant the idea in their heads that food doesn’t grow on supermarket shelves,’ she explains. ‘The course is all about making food fun and enjoyable.’ She thinks that eight is the perfect age to start teaching children to cook, because at that age they are always hungry. 9() These children are certainly all smiles as they arrive at the country farmhouse. Three girls and four boys aged from ten to thirteen make up the group. They are immediately given a tour of what will be ‘home’ for the next 48 hours. 10 But one thing is quite clear – they all have a genuine interest in food and learning how to cook. Anna has worked as a chef in all sorts of situations and has even cooked for the crew of a racing yacht, in limited space and diffi cult weather conditions. 11 ‘Kids are easy to teach,’ she insists, ‘because they’re naturally curious and if you treat them like adults they listen to you.’ Back in the kitchen, Anna is giving the introductory talk, including advice on keeping hands clean, and being careful around hot ovens. 12 Judging by the eager looks on their young faces as they watch Anna’s demonstration, they are just keen to start cooking. The children learn the simplest way, by watching and then doing it themselves. They gather round as Anna chops an onion for the fi rst evening meal. Then the boys compete with each other to chop their onions as fast as possible, while the girls work carefully, concentrating on being neat. 13 When they learn to make bread, the girls knead the dough with their hands competently, while the boys punch it into the board, cheerfully hitting the table with their fi sts. The following morning, four boys with dark shadows under their eyes stumble into the kitchen at 8.30 a.m. to learn how to make breakfast (sausages and eggs, and fruit drinks made with yoghurt and honey). We learn later that they didn’t stop talking until 4.30 a.m. 14 Ignoring this, Anna brightly continues trying to persuade everyone that fruit drinks are just as interesting as sausages and eggs. Anna has great plans for the courses and is reluctant to lower her standards in any way, even though her students are so young. 15 ‘And I like to keep the course fees down,’ Anna adds, ‘because if the children enjoy it and go on to teach their own children to cook, I feel it’s worth it.’ If this course doesn’t inspire them to cook, nothing will.

A This is followed by a session on ‘knife skills’, which will be important later on.

B She always uses top- quality ingredients, such as the best cuts of meat and the fi nest cheeses, so there’s clearly no profi t motive in this operation.

C As they wander round, they argue lightheartedly about who has had the most experience in the kitchen.

D In the garden, they learn about the herbs that they will use in their cooking.

E Their obvious tiredness may explain why one of them goes about the task so carelessly that the ingredients end up on the fl oor.

F This is particularly true of young boys, who are happy to do anything that will end in a meal.

G As a result, she has a very relaxed attitude to cooking, constantly encouraging the children and never talking down to them.

H This contrast will become something of a theme during the course.

1
24 tháng 3 2018

The little chefs Hilary Rose travels to Dorset, in the south of England, to investigate a cookery course for children. There must be something in the air in Dorset, because the last place you’d expect to fi nd children during the summer holidays is in the kitchen. Yet in a farmhouse, deep in the English countryside, that’s exactly where they are – on a cookery course designed especially for children. It’s all the idea of Anna Wilson, who wants to educate young children about cooking and eating in a healthy way. ‘I’m very keen to plant the idea in their heads that food doesn’t grow on supermarket shelves,’ she explains. ‘The course is all about making food fun and enjoyable.’ She thinks that eight is the perfect age to start teaching children to cook, because at that age they are always hungry. 9() These children are certainly all smiles as they arrive at the country farmhouse. Three girls and four boys aged from ten to thirteen make up the group. They are immediately given a tour of what will be ‘home’ for the next 48 hours. 10 But one thing is quite clear – they all have a genuine interest in food and learning how to cook. Anna has worked as a chef in all sorts of situations and has even cooked for the crew of a racing yacht, in limited space and diffi cult weather conditions. 11 ‘Kids are easy to teach,’ she insists, ‘because they’re naturally curious and if you treat them like adults they listen to you.’ Back in the kitchen, Anna is giving the introductory talk, including advice on keeping hands clean, and being careful around hot ovens. 12 Judging by the eager looks on their young faces as they watch Anna’s demonstration, they are just keen to start cooking. The children learn the simplest way, by watching and then doing it themselves. They gather round as Anna chops an onion for the fi rst evening meal. Then the boys compete with each other to chop their onions as fast as possible, while the girls work carefully, concentrating on being neat. 13 When they learn to make bread, the girls knead the dough with their hands competently, while the boys punch it into the board, cheerfully hitting the table with their fi sts. The following morning, four boys with dark shadows under their eyes stumble into the kitchen at 8.30 a.m. to learn how to make breakfast (sausages and eggs, and fruit drinks made with yoghurt and honey). We learn later that they didn’t stop talking until 4.30 a.m. 14 Ignoring this, Anna brightly continues trying to persuade everyone that fruit drinks are just as interesting as sausages and eggs. Anna has great plans for the courses and is reluctant to lower her standards in any way, even though her students are so young. 15 ‘And I like to keep the course fees down,’ Anna adds, ‘because if the children enjoy it and go on to teach their own children to cook, I feel it’s worth it.’ If this course doesn’t inspire them to cook, nothing will.

A This is followed by a session on ‘knife skills’, which will be important later on. T

B She always uses top- quality ingredients, such as the best cuts of meat and the fi nest cheeses, so there’s clearly no profi t motive in this operation.F

C As they wander round, they argue lightheartedly about who has had the most experience in the kitchen.T

D In the garden, they learn about the herbs that they will use in their cooking.T

E Their obvious tiredness may explain why one of them goes about the task so carelessly that the ingredients end up on the fl oor.F

F This is particularly true of young boys, who are happy to do anything that will end in a meal T

G As a result, she has a very relaxed attitude to cooking, constantly encouraging the children and never talking down to them.F

H This contrast will become something of a theme during the course.F

24 tháng 3 2018

woa,kiên trì thật Nguyễn Công Tỉnh

Choose the item (A, B, C or D) that best completes each of the following sentences.   In 1988, for the first time in British history, a National Curriculum was introduced. The National Curriculum tells pupils which subjects they have to study, what they must learn and when they have to take assessment tests. [assessment: đánh giá]   Between the ages of 14 and 16, pupils study for their GCSE (General Certificate of Secondary Education) exams. Pupils must take English Language, Maths and...
Đọc tiếp

Choose the item (A, B, C or D) that best completes each of the following sentences.

   In 1988, for the first time in British history, a National Curriculum was introduced. The National Curriculum tells pupils which subjects they have to study, what they must learn and when they have to take assessment tests. [assessment: đánh giá]

   Between the ages of 14 and 16, pupils study for their GCSE (General Certificate of Secondary Education) exams. Pupils must take English Language, Maths and Science for GCSE, as well as a half GCSE in a foreign language and Technology. In addition, they must also be taught Physical Education, Religious Education and Sex Education, although they do not take exams in these subjects.

   At the age of 16, pupils can leave school. If pupils stay on, they usually take A (Advanced) levels, AS (Advanced Supplementary) level or GNVQs (Greater National Vocational Qualifications). It is quite common to combine, for example, two A levels with one AS level, or one A level with one GNVQ.

   Pupils taking A levels study traditional subjects, such as French, Physics or History. To go to university, pupils usually need two or three A levels.

   AS levels are the same standard as A levels, but only half of the content: AS level German pupils take the A-level German language exam, but do not take the A-level German Literature exam.

   GNVQs are vocational qualifications. Pupils usually take on GNVQ in subjects such as Business, Leisure and Tourism, Manufacturing, and Art and Design. One GVNQ (at advanced level) is equal to two A levels.

2. Which of the following subjects do British students NOT take exams in?

A. Science

B. Physical Education

C. Maths

D. English Language

1
7 tháng 4 2017

Đáp án B.

XI a. Choose one word below to fill in each blank space in the following passage. adults subjects. in for. Difficult Every year, students from many countries learn English. Some of these students are young children Others are teenagers. Many are (1).... Some learn at school, others study by themselves. Why do all these people want to learn English? It is(2)...to answer that question. Many boys and girls learn English at school because it is one of their (3) ...They study their own language...
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XI a. Choose one word below to fill in each blank space in the following passage.

adults subjects. in for. Difficult

Every year, students from many countries learn English. Some of these students are young children Others are teenagers. Many are (1).... Some learn at school, others study by themselves. Why do all these people want to learn English? It is(2)...to answer that question. Many boys and girls learn English at school because it is one of their (3) ...They study their own language and mathematics and English. Many adults learn English because it is (4)...their work. Teenagers often learn English for their higher studies because some of their books are (5)... English at college or university. Other people learn English for their hobby because they want to read are newspapers or magazines in English or listen to English songs

b. Read the above passage again and answer the following questions

1. Who want to learn English?

2. Why do many people learn English?

3. Do all people have to go to school to learn English? Why or Why nol?

4.Why is English necessary for higher education?

1
10 tháng 5 2019

a.

1. adults

2. difficult

3. subjects

4. for

5. in

family in Britain is changing. The once typical British family headed by two parents has undergone substantial changes during the twentieth century. In particular there has been a rise in the number of single-person households, which increased from 18 to 29 per cent of all households between 1971 and 2002. By the year 2020, it is estimated that there will be more single people than married people. Fifty years ago, this would have been socially unacceptable in Britain. In the past, people got...
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family in Britain is changing. The once typical British family headed by two parents has undergone substantial changes during the twentieth century. In particular there has been a rise in the number of single-person households, which increased from 18 to 29 per cent of all households between 1971 and 2002. By the year 2020, it is estimated that there will be more single people than married people. Fifty years ago, this would have been socially unacceptable in Britain.

In the past, people got married and stayed married. Divorce was very difficult, expensive and took a long time.

(cohabit) without getting married. Only about 60% of these couples will eventually get married.

In the past, people married before they had children, but now about 40% of children in Britain are born to unmarried cohabiting) parents. In 2000, around a quarter of unmarried people between the ages of 16 and 59 were cohabiting in Great Britain. Cohabiting couples are also starting families without first being married. Before 1960 this was very unusual, but in 2001 around 23 per cent of births in the UK were to cohabiting couples.

People are generally getting married at a later age now and many women do not want to have children immediately. They prefer to concentrate on their jobs and put off having a baby until late thirties.

The number of single-parent families is increasing. This is mainly due to more marriages ending in divorce, but some women are also choosing to have children as lone parents without being married.

19. Which of the following could be the best title for the passage?

A. Changing Values and Norms of the British Family B. Changes in Marriage among British Young Generations C. Changing Insights into and Ideas of the British Family

D. Changes in Viewpoints and Lifestyles of British Couples

20. The word "which" in the passage refers to _

A. the family in Britain

B. substantial changes C. typical British family

D. single-parent households

11

21. Which of the following is NOT true according to the passage?

A. In the past, British people had to pay a lot if they wanted to get divorced. B. Half of the children in Britain now are born to unmarried couples. C. Women in Britain now do not want to have children right after marriage. D. There are more and more single-parent families in Britain these days.

A. do not want

B. delay

C. start

D. do not intend

23. Which of the following best describes the overall tone of the passage?

B. positive

C. negative

D. predictive Except for a few

0
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. ...
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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
1
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