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Exercise1: Using Present participle phrase to combine each pair of sentences into one.
1. Who saw the boy? He swam in the pool two hours ago.
Who saw the boy swimming in the pool two hours ago?
2. The man is a clown. He is trying to stand on a ball.
The man trying to stand on a ball is a clown
3. The envelope has no stamp on it. It lies on the table.
The envelope lying on the table has no stamp on it
4. My grandmother is old and sick. She never goes out of the house.
My grandmother never going out of the house is old and sick
5. The street is very wide. It leads to the school.
The street leading to the school is very wide
6. Mr. John is my friend. He teaches my son English.
Mr. John teaching my son English is my friend
7. The students are sitting for the exam. They are from Singapore.
The students from Singapore. are sitting for the exam
8. The fence surrounds our house. It is made of wood.
The fence surrounding our house is made of wood
9.The man works in this hospital. He can speak three foreign languages.
The man working in this hospital can speak three foreign languages.
10.A bus goes to the airport. It runs every half an hour.
A bus going to the airport runs every half an hour.
Exercise2: Using Past participle phrase to combine each pair of sentences into one.
1. We are driving on the road. It was built in 2000
We are driving on the road built in 2000
2. The vegetables are sold in this shop. They are grown without chemicals. ……
The vegetables grown without chemicals are sold in this shop
3. The energy is radiated by the sun. It can boil water and run machines.
The energy radiated by the sun can boil water and run machines.
4. Flowers are grown in Dalat. We exported them to foreign countries.
We exported Flowers grown in Dalat to foreign countries.
5. Cars are made in Korea. They are cheap and beautiful.
Cars made in Korea are cheap and beautiful.
6. “The Old Man and the Sea” was written by Hemingway. It is very interesting.
“The Old Man and the Sea” written by Hemingway is very interesting.
7. Penicillin has saved the lives of millions. It was discovered by Dr. Fleming.
Penicillin discovered by Dr. Fleming has saved the lives of millions
8. Rome, Paris and London are big cities. They are visited every year by millions of tourists.
Rome, Paris and London visited every year by millions of tourists are big cities
9. The Great Wall of China was built over 2,000 years ago. It is now one of the seven wonders of the world.
The Great Wall of China built over 2,000 years ago is now one of the seven wonders of the world.
10.The boy was taken to the hospital. He was injured in the accident
The boy injured in the accident was taken to the hospital
Exercise3: Using Present participle phrase or Past participle phrase to combine each pair of sentences into one.
1. The baby is crying for his mother. He is lying in the baby carriage.
The baby lying in the baby carriage is crying for his mother
2. The singer is Trong Tan. He is singing on the television
The singer singing on the television is Trong Tan.
3. The pottery vase is 100,000 dong. It is made in Bat Trang.
The pottery vase made in Bat Trang is 100,000 dong
4. The road is very narrow. It joins the two villages
The road joining the two villages is very narrow
5. Do you know the woman? The woman is talking to Sally
Do you know the woman talking to Sally?
6. The window has been repaired. It was broken last night.
The window broken last night. has been repaired
8. A bridge has been declared unsafe. It was built only two years ago.
A bridge built only two years ago has been declared unsafe
9. People don’t want to use the goods. They are produced in China.
People don’t want to use the goods produced in China.
10.The students are planting trees along the streets. They are volunteers.
The students planting trees along the streets are volunteers.
11.The book is about the boy. He ran away from the orphanage
The book is about the boy running away from the orphanage
12.Trinh Cong Son composed songs. They are greatly liked by millions of Vietnamese people.
Trinh Cong Son composed songs greatly liked by millions of Vietnamese people.
13. The little boy lost his way. He is crying over there.
The little boy crying over there. lost his way
14.The river is Saigon River. It flows through Ho Chi Minh City15. The paintings were stolen from the museum. They haven’t been found yet.
The river flowing through Ho Chi Minh City is Saigon River
The paintings stolen from the museum haven’t been found yet.
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