Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
Television is an important invention of the twentieth century. It hasbeen ....(1).so... popular that now we can ' t imagine what life would be ..like...(2) ....... if there were no television. Television is a major ..means..(3).... of communication. It brings pictures andsounds from around the world into millions of homes. Through ..television..(4)....,viewers can see and learn about people, places and things in farawaylands.Television ..widens..(5).... our knowledge by introducing to us new ideas ..which..(6).... may lead us to new hobbies and recreations. In addition ....(7)..to.. the news, television provides us with a variety ofprograms that can satisfy ....(8)..every.. taste. Most people now seem to like
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
UNIT 1 Friendship
I. Choose the word that has the underlined (letters) pronounced differently from the others.
1. a. machine b. change c. teacher d. choose
2. a. condition b. option c. suggestion d. relation
3. a. believe b. readily c. friend d. pleasure
4. a. good b. gossip c. game d. geometry
5. a. trust b. mutual c. number d. uncertain
II. Choose the one word or phrase - a, b, c, or d - that best completes the sentences or
substitutes for the underlined word or phrase.
6. It was so relaxing to be ________ old friends.
a. in b. between c. among d. around
7. She's made friends ________ a little girl who lives next door.
a. to b. of c. by d. with
8. The children seem to be totally capable ________ working by themselves.
a. on b. of c. in d. for
9. Your friendship should be based on ________ trust.
a. basic b. fragile c. mutual d. blind
10. The company expects ________ from its employees.
a. constancy b. quality c. interest d. loyalty
11. I've got lots of _______, but only a few are really good friends
a. close friends b. acquaintances c. neighbors d. partners
12. Friendship is a two-sided ________, it lives by give-and-take.
a. affair b. event c. aspect d. feature
13. Unselfishness is the very essence of friendship.
a. romantic part b. important part c. difficult part d. interesting part
14. They ________ a close friendship at university.
a. created b. became c. promoted d. formed
15. We stayed friends even after we ________ and left home.
a. brought up b. turned up c. grew up d. took up
III. Choose the word or phrase -a, b, c, or d -that best completes the sentence.
16. He finds it ________ lasting friendships.
a. difficult to make b. difficulty in making c. is difficult to make d. difficult making
17. You ________ any friends if you ________ talking like that.
a. will win/ carryon b. won't win/ carryon
c. wouldn't win/ carried on d. would have won/ had carried on
18. The aim of the culture festival is ________ friendship between the two countries
a. promote b. promoting c. to promote d. being promoted
19. People he ________ turned out to be only fair-weather friends.
a. trusted b. has trusted c. was trusting d. had trusted
20. How can you let such a silly incident ________ your friendship?
a. wreck b.to wreck c. wrecking d. that wrecks
21. It has become necessary ________ water in the metropolitan area because of the severe drought.
a. rationing b. ration c. to ration d. to have rationed
22. All the passengers were made ________ their seat belts during the turbulence.
a. buckle b. to buckle c. buckling d. for buckling.
23. ________ good ice cream, you need to use a lot of cream.
a. Make b. Making c. To make d. For make
24. I got my friend ________ her car for the weekend.
a. to let me to borrow b. to let me borrow c. let me borrow d. let me to borrow
25. They _______ good friends, but they've fallen out recently.
a. used to be b. would be c. were d. are
IV. Identify the one underlined word or phase - A, B, C or D - that must be changed for the
sentence to be correct.
26. Whatever happened, I didn't want to lose friendship of Vera.
A B C D
Reference Material For 11
th
- grade students All Rights reserved
1
Lien Son High School – English Group New teaching and testing projects
27. The basic aims of science and magic are very similar - to understand and to control nature
A B C D
28. It was a period of her life when she made some lifelong friendship.
A B C D
29. Simon finds it hard for making friends with other children.
A B C D
30. Not longer are contributions to the advancement of industry made primarily by individuals
A B C D
the major reason for making excuse seems to be to maintain our self-worth , to create a positive image to ourselves and to others . Excuses are also offered to reduce stress that may be created by failure . We feel that if we can offer an excuse - escpecially a good one that is accepted by those around us - It will lessen the negative reaction and the stress caused by failure . So you can see , there are many reasons why people make excuses
- Topic : _______Why people make excuses ? _________________