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28 tháng 8 2018

1. The lecturer is giving us first-aid __instruction___. (instruct)

2. Doctors have succeeded in finding a better __treatment___ for the disease. (treat)

10 tháng 3

1, instruction.

2, treatment.

 

26 tháng 12 2017

viết lại câu

1 they will have a vacation that last for three months

they will have 3 months for a vacation

2 she is not as good at math as i am

i am better at math than her.

3 whose book is this?

who.is this book..............?

4 how much is this dictionary ?

how much does this dictonary cost ?

5 it isn't important for you to finish the work today

you don't finish the work today,it isn't important.

6 we have a two - month summer vacation

our summer vacation lasts two month.

7 no shirt in the shop is more beautiful than this first

this shirt is the most beautiful in the shop.

8 the sailors like the sea better than the land

the sailor prefer the sea to the land

9 finding a bie here is very difficult

it is very difficult to find a bie here

10 i will spend two months learning french in ha noi

it takes me 2 months to learn french in hn

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

Ex1: Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become(1)..........if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some bird, (2)............as parrots are caught alive and sold as pets. For many animals and birds, the problem is that their habitat the place where they live is...
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Ex1:

Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become(1)..........if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some bird, (2)............as parrots are caught alive and sold as pets. For many animals and birds, the problem is that their habitat the place where they live is disappearing. More(3)......... is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them groww better crops, but these chemicals pollute(4)..........the environment and harm wildlife. The most successful animal on earth-human beings will soon be th only ones left, (5)...........we can solve this problem.

1. A.extintct B.lost C.empty D.disappeared

2. A.such B.where C.like D.or

3. A.area B.earth C.land D.soil

4. A.the B.that C.an D.a

5. A.because B.however C.if D.unless

Ex2:

Although most families in the United States enjoy a high living standard, many Amerrican women have to work(1).......... at home and in their offices. Despite their husband's (1)..........of the housewwork, women have to do most of the housekeeping tasks. In single-parent families, the mothers may not have (3)..........children to take care of, but they have to raise their families alone and have to provide for all the housekeeping money. Therefore, the (4)..........mothers have to work very hard to earn their living. More over, in spite of the fact that the single mothers have all the (5).........conveniences at their homes, they find that bringing up their teenage children alone is not easy

1. A.hardly B.hard C.fast D.equally

2. A.share B.need C.refusal D.responsibility

3. A.few B.much C.many D.some

4. A.dependent B.lonely C.alone D.single

5. A.expensive B.saving C.comfortable D.modern

Ex3:

Doctors say that regular aerobic exercise leafs to a healthier heart. Jogging,(1)..........., riding a bicycle, and other aerobic exercises lower the risk of heart disease. In one kind of heart disease, fatty stuff called plaque builds up in blood vessels(2)..........to the heart. Aerobic exercise helps prevent this build up> Aerobic exercise also(3)..........the heart and lúng stronger.

Doctors say you(4)............do 20 to30 minutes of aerobic exercise at least three times a week. You need(5).........hard enough to get your heart beating. You can use two fingers to feel a beat, or pulse, in your wrist or neck.

1. A.walking B.walk C.walks D.walked

2. A.which goes B.that going C.whcih to go D.going

3. A.made B.makes C.making D.make

4. A.would B.must C. should D.have to

5. A. to exercise B.exercising C.exercise D.exercised

1
21 tháng 10 2018

Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become(1)..........if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some bird, (2)............as parrots are caught alive and sold as pets. For many animals and birds, the problem is that their habitat the place where they live is disappearing. More(3)......... is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them groww better crops, but these chemicals pollute(4)..........the environment and harm wildlife. The most successful animal on earth-human beings will soon be th only ones left, (5)...........we can solve this problem.

1. A.extintct B.lost C.empty D.disappeared

2. A.such B.where C.like D.or

3. A.area B.earth C.land D.soil

4. A.the B.that C.an D.a

5. A.because B.however C.if D.unless

Ex2:

Although most families in the United States enjoy a high living standard, many Amerrican women have to work(1).......... at home and in their offices. Despite their husband's (1)..........of the housewwork, women have to do most of the housekeeping tasks. In single-parent families, the mothers may not have (3)..........children to take care of, but they have to raise their families alone and have to provide for all the housekeeping money. Therefore, the (4)..........mothers have to work very hard to earn their living. More over, in spite of the fact that the single mothers have all the (5).........conveniences at their homes, they find that bringing up their teenage children alone is not easy

1. A.hardly B.hard C.fast D.equally

2. A.share B.need C.refusal D.responsibility

3. A.few B.much C.many D.some

4. A.dependent B.lonely C.alone D.single

5. A.expensive B.saving C.comfortable D.modern

21 tháng 10 2018

Nguyễn Nhật Minh còn bài 3 nữa bạn ơi

Ex1 : Do as directed in parentheses 1. Everyone stopped ( laught ) when we ( come ) . ( Supply the correct verb form ) 2. Putting the knives ......... an electrical socket is dangerous ( Fill in the blank with the suitable preposition ) 3. Jeans can't be worn at work ( Change in to active voice ) Ex2 : comple the following sentences based on the given cues 1. See you / to / I am / how glad / again ! 2. A parting meeting / have / before leaving / you 'd better Ex3 : Chia động từ trong...
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Ex1 : Do as directed in parentheses 1. Everyone stopped ( laught ) when we ( come ) . ( Supply the correct verb form ) 2. Putting the knives ......... an electrical socket is dangerous ( Fill in the blank with the suitable preposition ) 3. Jeans can't be worn at work ( Change in to active voice )
Ex2 : comple the following sentences based on the given cues 1. See you / to / I am / how glad / again ! 2. A parting meeting / have / before leaving / you 'd better
Ex3 : Chia động từ trong ngoặc 1.The thiefs ( catch ) ...... when the ( leave ) ....... the bank 2. Two hours ago , Mrs Brown ( have ) ........... Alice ( take ) ............. her son to the school 3. How many times you ( be ) .......... to HCM city ? 4 . The moon ( move ) ............. around the earth
Ex4 : điền 1 giới từ thích hợp vào chỗ trống 1. She went our the room ............ saying a word 2. The life in the countryside is changing ...... Better 3. She was born ........ 2 o'clock ............ 18th July 4. Mary is thinking ........... importing fowers .......... China 5. They are traveling .......... the airport ............. a bus 6. The flight ............. deforestation is very important

1
1 tháng 4 2019

I.

1.laughing; came

2.into

3.we can't wear jeans at work

II.

1.How glad i am to see you again

2.You'd better have a party meeting before meeting

III.

1.caught; left

2.had; take

3.have you been

4.moves

IV.

1.without

2.for

3.at;on

4.of; from

5.to;on

6.against

29 tháng 10 2016

E.X 1 : Chia dạng đúng của động từ

1. She(leave) leaves home at 7 o'clock every morning

2. Mark(do) does the garden everyday

3. I(study) am studying Janpanese this year. It's very difficult

4. What do you(have) have usually for breakfast

5. Tony is upstairs in the bathroom. He (wash) is washing his hair

29 tháng 10 2016

Câu hai bạn ơi

Điền từ : triggered emotions symptoms nervous witnessed unknown muscles divorce considered eventually For a long time we have known that sadness or a stressful event can cause heart (1) ... . to become weaker. This may cause shortness of breath, a pain in the chest and may (2).. . lead to a heart attack. Now, a study published by the European Heart Journal claims that happiness can also lead to the same (3).... . Swiss researchers at the University of Zurich looked at data coming from...
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Điền từ : triggered emotions symptoms nervous witnessed unknown muscles divorce considered eventually

For a long time we have known that sadness or a stressful event can cause heart (1) ... . to become weaker. This may cause shortness of breath, a pain in the chest and may (2).. . lead to a heart attack. Now, a study published by the European Heart Journal claims that happiness can also lead to the same (3).... . Swiss researchers at the University of Zurich looked at data coming from almost 500 patients in 9 countries who were likely to acquire such a broken heart disease. In most cases the death of a family member or close relative, an accident, (4).... or other relationship problems caused such a heart weakness. However, in 20 patients the same symptoms were (5)... . by happy and joyful events, such as birthday parties, weddings, the birth of a grandchild or after their favourite team had won a competition. Experts call this the happy heart syndrome. The researchers point out that doctors should be aware of both sides when treating patients. According to the study reasons for a broken heart syndrome may be more widespread than previously (6)... . The study has also found out that in over 90% of the cases older women over 60 were at risk. What exactly causes such a syndrome remains (7).. . The broken heart syndrome was first (8)... . in Japan in 1990. At the beginning it was connected to negative (9)... .that lead to an increase in hormones. Doctors believe that emotional reactions make the (10) system behave in a certain way.

0
Read the passage and mark the letter A , B , C or D to answer the questions from 1 - 7 PANDEMIC DISEASES Diseases are a natural part of life on earth . If there were no diseases , the population would grow too quickly , and there would not be enough food or other resources , so in a way , diseases are natural ways of keeping the Earth in balance . But sometimes they spread very quickly and kill large numbers of people . For example , in 1918 , an outbreak of the flu spread across the world...
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Read the passage and mark the letter A , B , C or D to answer the questions from 1 - 7

PANDEMIC DISEASES

Diseases are a natural part of life on earth . If there were no diseases , the population would grow too quickly , and there would not be enough food or other resources , so in a way , diseases are natural ways of keeping the Earth in balance . But sometimes they spread very quickly and kill large numbers of people . For example , in 1918 , an outbreak of the flu spread across the world , killing over 25 million people in only six months . Such terrible outbreaks of a diseases are called pandemics

Pandemics happen when a disease changes in a way that our bodies are not prepared to fight . In 1918 , a new type of flu virus appeared . Our bodies had no way to fight this new flu virus , and so it spread very quickly and killed large numbers of people . While there have been many different pandemic diseases throughout history , all of them have a new thing in common . First , all pandemic diseases spread from one person to another very easily .

Second , while they may kill many people , they generally do not kill people very quickly . A good example of this would be the Marburg virus . The Marburg virus is an extremely infectious disease . In addition , it is deadly . About 70 - 80 % of all people who get the Marburg virus died from the disease . However , the Marburg virus has not become a pandemic because most people die within three days of getting the disease . This means that the virus does not have enough time to spread a large number of people . The flu virus of 1918 , on the other hand , generally took about a week to ten days to kill its victims , so it had more time to spread .

While we may never be able to completely stop pandemics , we can make them less common . Doctors carefully monitor new diseases that they fear could become pandemics . For example , in 2002 , and 2003 , doctors carefully watched SARS . Their health warnings may have prevented SARS from becoming a pandemic .

Question 1 : According to paragraph 1 , how are diseases a natural part of life on Earth ?

A. They prevent pandemics B. They help control the population

C. They led the world grow quickly D. They kill too many people

Question 2 : Based on the information in the passage the term " pandemics " can be explained as .............................................

A. diseases with no cure

B. a deadly kind of flu

C. diseases that spread quickly and kill large numbers of people

D. new disease like SARS or the Marburg virus

Question 3 : According to the passage , all of the following are true of the 1918 flu pandemic EXCEPT that ...............................................

A. it involved a new kind of flu virus B. it killed over 25 million people

C. it was the last pandemic in history D. it took a little over a week to kill ít victims

Question 4 : The word " it " in the passage refers to .......................

A. disease B. flu virus C. pandemics D. bodies

Question 5 : Which of the following is mentioned as a common feature of all pandemic diseases ?

A. They spread from people to people very quickly

B. It kill many people very quickly

C. They do not kill people very quickly

D. They kill all the victims

Question 6 : The word " monitor " in the passage is closest is meaning to ........................

A. fight B. prevent C. watch D. avoid

Question 7 : The author mentions SARS in order to .............................

A. give an example of a highly dangerous disease

B. suggest that SARS will never become a pandemic

C. give an example of the successful prevention of a pandemic

D. suggest that there may be a new pandemic soon .

0
7 tháng 11 2016

1.The ticket to the show are too expensive for us

-> The ticket to the show cost too much for us to buy.

2.Khanh is a better painter than Giang

->Giang can't paint as well as Khanh can.

3.We can get to the art galley in half an hour

->It only takes us half an hour to get to the art gallery.