Read the passage, decide whether the statements are true (T) or false (F), then answer the questions below. We all live in a society and are all bound to a neighborhood. Neighborhood is ver...

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Read the passage, decide whether the statements are true (T) or false (F), then answer the questions below. W...

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Corn dog

28 tháng 7 2017 lúc 22:28

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

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Shinichi Haibara

14 tháng 9 2017 lúc 21:24

John Fisher, a builder, and his wife Elizabeth wanted more living space, so they left small flat for an old 40-metre high castle tower. They have spent five years turning it into a beautiful home with six floors, winning three architectural prizes. I love the space, and being private,Elizabeth says. You feel separated from the world. If Im in the kitchen, which is 25 metres above the groud floor, and the doorbell rings, I dont have to answer it because visitor cant see Im in!. Lê Huỳnh Phan T...

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John Fisher, a builder, and his wife Elizabeth wanted more living space, so they left small flat for an old 40-metre high castle tower. They have spent five years turning it into a beautiful home with six floors, winning three architectural prizes.

'I love the space, and being private,'Elizabeth says. 'You feel separated from the world. If I'm in the kitchen, which is 25 metres above the groud floor, and the doorbell rings, I don't have to answer it because visitor can't see I'm in!'.

Lê Huỳnh Phan

There are 142 steps to the top, so i go up and down five or six times a day, it's very good exercise! But having to carry heavy things to the top is terrible, so i never buy two bags of shopping from the supermarket at a time. Apart from that, it's a brilliant place to live.'

'When we first saw the place, I asked my father's advice about buying it, because we couldn't decide. After paying for it, we were a bit worried because it looked awful. But we really loved it, and knew how we wamted it to look'

'Living here can be difficult - yesterday I climbed a four-metre ladder to clean the windows. But when you stand on the roof you can see all the way out to sea on a lear day, and that's a wonderful experience. I'm really glad we moved.'

1/ What is the writer trying to do in the test?

a/ Describe how to turn an old tower into a house

b/ Recommend a particular builder

c/ Describe what it is like to live in a tower

d/ Explain how to win prizes for building work

2/ From this text, a reader can find out

a/ Why visitors are not welcome at John and Elizabeth's house

b/ Why Elizabeth exercises everyday

c/ Why Elizabeth asked her father to buy the tower

d/ Why John and Elizabeth left the flat

3/ Which of the following best describes Elizabeth's feeling about the tower?

a/ She wanted it as soon as she saw it

b/ She likes most things about it

c/ She has been worried since they paid for it

d/ She finds it unsuitable to live in

4/ What problem does Elizabeth have with living in such a tall building

a/ Her visitor find it difficult to see if she is at home

b/ She feels separated from other people

c/ She cannot bring home lots of shopping at once.

d/ It is impossible to clean any of the window

5/ They were rather worried after paying for the castle because

a/ They really couldn't afford it

b/ It was about to collapse

c/ It looked terrible at first

d/ They were unable to take care of such a large house

@Dương Yến Tử; @Linh Diệu

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Dennis

9 tháng 3 2017 lúc 9:18

fill in each space in the following passage with one suitable world. Computers play an important role in our everyday lives, sometimes without us even realizing it. Consider the use (1)............ computers in both shops and offices. Big shops especially chain stores with branches all over the country, have to deal with very large amounts of information. They have to make (2)................. that there are enough goods on the selves for customers to buy; they need to be (3)...............

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fill in each space in the following passage with one suitable world.

Computers play an important role in our everyday lives, sometimes without us even realizing it. Consider the use (1)............ computers in both shops and offices. Big shops especially chain stores with branches all over the country, have to deal with very large amounts of information. They have to make (2)................. that there are enough goods on the selves for customers to buy; they need to be (3).............. to re-order befora stocks (4).............. out, to decide which things are selling well and (5)........... on. All these processes (6)........... performed quickly and afficiently by computers. A (7)............... of offices work in the past involved information on paper. (8)................... it had been dealt with by people, the paper was put (9)............. for future reference. This way of working was (10).............. particularly easy or fast. A computerized system is much more efficient.

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Anh Tú Dương

14 tháng 6 2018 lúc 9:32

Most of us take language for granted. We use it every day - in spoken, written, auditory and electronic forms - while forgetting that it’s what makes human communication possible. Indeed, our ability to communicate - person ally or professionally - is primarily based on the existence of language. In countries such as the United Kingdom, Australia and the US where English is the primary la nguage, it’s even easier to dismiss the advantage of speaking a language that the rest of the...

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Most of us take language for granted. We use it every day - in spoken, written, auditory and electronic forms - while forgetting that it’s what makes human communication possible. Indeed, our ability to communicate - person ally or professionally - is primarily based on the existence of language. In countries such as the United Kingdom, Australia and the US where English is the primary la nguage, it’s even easier to dismiss the advantage of speaking a language that the rest of the world is now being forced to learn out of necessity. Nguy ễn Đức H ưng*  * - Marie Curie High School , HP. (  : 0912.883.190 ) More than two - thirds of the world’s population still does not use English. Yet, as the need to communicate globall y increases, English is fast becoming the number 1 choice for cross - bo rder communication world - wide. While increasing the ease of communication across borders, choosing a single global language also puts enormous pressure on those who do not speak the chosen language. Encouraging one particular tongue as a prim ary or secondary mode of communication in all countries also requires a serious commitment, along with extensive reso urces and funding. This issue also raises critical questions around the importance of global intelligibility versus a c ountry’s identity, as ther e is no more sensitive symbol of individual and national identity than one’s language. 1) According to the passage, what makes human communication possible? A. human’s ability to communicate B. language C. human’s love for each other D. human’s pr ofessions 2) Why is it easier for the Australian, the Americans and the British to take English for granted? A. Because they don’t like English. B. Because they are not forced to learn English. C. Because they still live well without speaking English. D. Because they were born with English as their primary language and they do not consciously realise its importance. 3) Based on the passage above, how many people use English world - wide? A. one - third of the world’s population B. two - thirds of the world’s population C. half of the world’s population D. 1.5 million people 4) Why is English becoming the number one language? A. Because it is the simplest language in the world. B. Because it is the language of the richest country in the world – the USA. C. Because English has long been used by many people. D. Because the need for communication across borderline increases. 5) Why should we be careful about choosing one particular language for all countries? A. Because it takes a lot of time for a ll people in the world to learn a certain language. B. Because all nations want to make their mother tongues the international language. C. Because it may negatively affect an individual country’s national identity. D. Because it’s hard to correct the mist ake once you have already chosen the wrong language

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Hạ Vy Vy

9 tháng 4 2018 lúc 13:03

recycling/ nothing/ list/ vegetables/ something/ save/ trouble/ polluting/ taking. Our environment is in (1) ______. Modern ways of living and today’s industries are (2) ______ it. Most people think there is (3) ______ they can do. This is not true. Everyone can do something to help (4) ______ our environment. Here is a (5) ______ of things you can do. Help to cut pollution by (6) ______ the bus to work instead of your car. Buy fruit and (7) ______ that have not been treated...

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recycling/ nothing/ list/ vegetables/ something/ save/ trouble/ polluting/ taking. Our environment is in (1) ______. Modern ways of living and today’s industries are (2) ______ it. Most people think there is (3) ______ they can do. This is not true. Everyone can do something to help (4) ______ our environment. Here is a (5) ______ of things you can do. Help to cut pollution by (6) ______ the bus to work instead of your car. Buy fruit and (7) ______ that have not been treated with pesticides. Recycle all your cans, bottles and paper. There should be a (8) ______ center somewhere near your home, so take them there. Most of the world’s energy comes from the sun. The sun’s energy is in wood, oil, and other things that people use for energy. VI. Read the text then answer true or false People use many sources of energy. Ancient people used only their arms, hands, and simple tools until they discovered fire. Later, people learned to use the energy of the wind to sail ships. Then they learned to use animals to do work. In the eighteenth and nineteenth centuries, people began to use machines. The first machines used steam. They burned coal to heat water. The hot water turned into steam, and the steam engine did the work. Later, people began to use the gasoline engine, and today people are using nuclear energy. Energy is one of the basic concepts, or ideas, of physics. It is the ability to do work. Without energy we could live. We need energy to work, and scientists are always looking for new sources of energy. 1. None of the world’s energy comes from the sun. 2. Wind, steam, and gasoline are sources of energy. 3. People have never used nuclear energy. 4. Energy is the ability to do work. 5. We need new sources of energy.

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Hiền Cherry

16 tháng 7 2018 lúc 13:27

WHY PEOPLE WORK All of us know that we have to work hard to earn a living ourselves and to support our family. However, we work not only for material life but also for many things that are beyond gaining money. We are working to affirm our ability on a certain field. We feel self-reliant, self-confident, and proud because we are financially independent. Anyone who works is regarded as a useful member of society. We are working that means we are contributing useful goods and services to our cou...

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WHY PEOPLE WORK

All of us know that we have to work hard to earn a living ourselves and to support our family. However, we work not only for material life but also for many things that are beyond gaining money. We are working to affirm our ability on a certain field. We feel self-reliant, self-confident, and proud because we are financially independent.

Anyone who works is regarded as a useful member of society. We are working that means we are contributing useful goods and services to our country.

Working helps us train our skills and talents. We always try our best to do a good job. The better we work, the more money we earn and that motivate us to work harder. Without working, a man’s life will be empty, purposeless and meaningless and it is easy for a lazy jobless man to do wrongs.

1. We have to work hard _____

A. because we are forced to B. to make our material life better

C. to make ourselves purposeless D. All are correct

2. Besides money, ________________.

A. we can get many other benefits from work B. we can get some salary from work

C. we sometimes feel very meaningless D. we can not contribute anything to our country

3. The more we work _____ .

A. the duller we feel B. the less we earn C. the more we contribute to society D. A and B

4. What motivates us to work harder? - ______.

A. good job B. good pay C. good way D. good skills

5. Without working, one's life is _______.

A. better B. more confident C. self-reliant D. meaningless

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Đào Đào

30 tháng 7 2020 lúc 10:21

Everyone knows that honeybees make honey, but how do they actually do it? Honeybees live in colonies, which means that they live with lots of other bees. Beehives, nests made of wax, are the places where they live and stow their honey. Honeybees drink nectar from flowers or other sweet deposits from plants or trees. The honey made by these bees is used to supply the colony with food during the cold winter when there arc no flowers to drink from. Thus, these bees not only consume the nectar...

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Everyone knows that honeybees make honey, but how do they actually do it? Honeybees live in colonies, which means that they live with lots of other bees. Beehives, nests made of wax, are the places where they live and stow their honey.

Honeybees drink nectar from flowers or other sweet deposits from plants or trees. The honey made by these bees is used to supply the colony with food during the cold winter when there arc no flowers to drink from. Thus, these bees not only consume the nectar for nourishment but also bring it home. They have a special organ called a honey stomach which is used to carry the food to their colony.

When honeybees come back home, they regurgitate what they have put in their honey stomachs. Other honeybees in the hive come along and help them. They repeatedly eat and regurgitate many times until the product becomes somewhat digested. Next, the bees move the syrupy product into open honeycomb cells. Then they beat their wings to fan it to prevent fermentation. The fanning makes the water evaporate so that the product gets thick enough. Now it cannot easily be attacked by bacteria. Finally, it can be called honey. After this process, honeybees seal up the honeycomb cells with wax until they are hungry.

The most impressive part of this process is how seamlessly a bee colony works together. In a colony, there are female worker bees, male drones, and one queen bee. Although there are both male and females in the hive, the majority of the work is done by females. The female worker bees are in charge of taking care of the hive and creating honey. When they are young, they take care of feeding the young bee larvae. When they are older, they go out and bring nectar back to the hive, where they begin making honey. The male drones are responsible for fertilizing the eggs, but require little energy as they spend their time waiting around the hive. The single queen bee is responsible for the colony's survival. She is the only female that can lay eggs. The wonderful substance called honey would not exist without the bees' teamwork.

1. What is the main topic of the passage?

A. The role of the female honeybee
B. Preventing fermentation in honey
C. Why honeybees build huge wax nests
D. How a honeybee colony works to make honey

2. What can be inferred from the passage about honey? A. It's not always the same color
B. It is only liked by a minority of people
C. Watery honey can go bad easily
D. It is created and cared for by the queen bee 3. What do honeybees do to prevent fermentation? A. Blow air on the honey by waving their wings
B. Overproduce honey using their legs
C. Feed the larvae the unfermented honey
D. Bring the honey to the honeycomb cells 4. According to the passage, which of the following is NOT true of honeybees? A. They work together in their colony.
B. They produce honey through a complex process
C. The queen bee is responsible for making honey
D The worker bees work both inside and outside of their hive.

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Cửu vĩ linh hồ Kurama

19 tháng 5 2017 lúc 20:25

Điền vào mỗi chỗ trống từ thích hợp trong khung: [ also, on, love, because, different, in, borrow, newspapers ] My school library is big. All the teachers and students come there to read and _____ bbooks. Many kinds of books for students from grade 6 to grade 9 are ___ the shelves in different sections, such as math, physics, chemistry, biology, and english books. there ______ a lot of readers, novels reference books. On the large and long table _____ the middle of the room are many kinds of _...

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Điền vào mỗi chỗ trống từ thích hợp trong khung:

[ also, on, love, because, different, in, borrow, newspapers ]

My school library is big. All the teachers and students come there to read and _____ bbooks. Many kinds of books for students from grade 6 to grade 9 are ___ the shelves in different sections, such as math, physics, chemistry, biology, and english books. there ______ a lot of readers, novels reference books. On the large and long table _____ the middle of the room are many kinds of _________ and magazines.

We often go to the school library t read books and study our lessons. It is ________ from our classrooms _____ it is a quiet place to study. I think the library is very helpful in developing our _____ of books.

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Hermione Granger

10 tháng 6 2018 lúc 10:53

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 cit...

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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

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Lớp 12 Tiếng anh Luyện tập tổng hợp

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