Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
recycling/ nothing/ list/ vegetables/ something/ save/ trouble/ polluting/ taking. Our environment is in (1)trouble. Modern ways of living and today’s industries are (2)polluting it. Most people think there is (3) nothing they can do. This is not true. Everyone can do something to help (4) save our environment. Here is a (5)list of things you can do.
-
- Help to cut pollution by (6)taking the bus to work instead of your car.
- Buy fruit and (7) vegetables that have not been treated with pesticides.
- Recycle all your cans, bottles and paper. There should be a (8) recycling center somewhere near your home, so take them there.
Our environment is in trouble. Modern ways of living and today’s industries are polluting it. Most people think there is nothing they can do. This is not true. Everyone can do something to help save our environment. Here is a list of things you can do.
- Help to cut pollution by taking the bus to work instead of your car.
- Buy fruit and vegetables that have not been treated with pesticides.
- Recycle all your cans, bottles and paper. There should be a recycling 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. F
2. Wind, steam, and gasoline are sources of energy. T
3. People have never used nuclear energy. F
4. Energy is the ability to do work. T
5. We need new sources of energy. T
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.
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
Read the passage then answer the following questions:
"I will think of it."It is easy to say this; but do you know what great things have come from thinking? We can not see our thouhts, or hear, or taste, or feel them;and yet what mighty power they have! Sir Isac Newton was seated in his garden on a summer's evning, when he saw an appe fall from a tree. He began to think, and, in trying to find out why the apple fell, discoveed how the earth, sun, moon, and stars are kept in their places. A boy named James Watt sat quitly by the firside, watching the lid of the tea kette as it moved up and down. He began to think; he wanted to find out why the steam in the kettle moved the heavy lid. From that time he went on thinking and thinking; and when he became a man, he improved the steam engine so much that it could, with the greatest ease, do the work of many horses. When you see a steamboat, a steam mill, or alocomotive, remember that it would never have been built if it had not been for the hard thinking of someone. A man named Galileo was once standing in the cathedral of Pisa, when he saw a chandelier swaying to and fro. This set him thinking, and it led to the invention of thependulum. James Ferguson was a poor Scotch shepherd boy. Once, seeing the inside of a watch, he was filled with wonder. "Why should I not make a watch?" thought he. But how was he to get the materials out of which to make the wheels and the mainspring? He soon found how to get them: he made the mainspring out of a piece of whalebone. He then made a wooden clock which kept good time. He began, also, to copy pictures with a pen, and portraits with oil colors. In a few years, while still a small boy, he earned money enough to support his father. When he became a man, he went to London to live. Some of the wisest men in England, and the king himself, used to attend his lectures. His motto was, "I will think of it;" and he made his thoughts useful to himself and the world.When you have a difficult lesson to learn, don't feel discouraged, and ask someone to help you before helping yourselves.Think, and by thinking you will learn how to think to some purpose.
1. What is the main idea of this passage?
A/Great geniuses didn't have to think.
B/We should always think.
C/Isaac Newton was a thinker.
D/Galileo was a thinker.
2. What caused Galileo to invent the pendulum?
A/Seeing a cathedral.
B/Thinking about apples.
C/Seeing a chandelier swing and thinking.
D/Thinking about gravity.
3. Why did the king attend James Ferguson's lectures?
A/Because Ferguson taught about pendulums.
B/Because Ferguson was a brilliant thinker.
C/Because the king was jealous of Ferguson's intelligence.
D/Because Ferguson was an entertaining speaker.
4.How is Galileo similar to Isaac Newton?
AThey were born at the same time.
BThey have nothing in common.
CThey are both great thinkers.
DThey both discovered gravity.
5.Why did James Ferguson decide to make a watch?
A/Because he was curious after seeing the inside of a watch.
B/Because the king asked him to.
C/Because he needed to support his sick father and mother.
D/Because he was poor and needed the money.
Read the passage then answer the following questions:
"I will think of it."It is easy to say this; but do you know what great things have come from thinking? We can not see our thouhts, or hear, or taste, or feel them;and yet what mighty power they have! Sir Isac Newton was seated in his garden on a summer's evning, when he saw an appe fall from a tree. He began to think, and, in trying to find out why the apple fell, discoveed how the earth, sun, moon, and stars are kept in their places. A boy named James Watt sat quitly by the firside, watching the lid of the tea kette as it moved up and down. He began to think; he wanted to find out why the steam in the kettle moved the heavy lid. From that time he went on thinking and thinking; and when he became a man, he improved the steam engine so much that it could, with the greatest ease, do the work of many horses. When you see a steamboat, a steam mill, or alocomotive, remember that it would never have been built if it had not been for the hard thinking of someone. A man named Galileo was once standing in the cathedral of Pisa, when he saw a chandelier swaying to and fro. This set him thinking, and it led to the invention of thependulum. James Ferguson was a poor Scotch shepherd boy. Once, seeing the inside of a watch, he was filled with wonder. "Why should I not make a watch?" thought he. But how was he to get the materials out of which to make the wheels and the mainspring? He soon found how to get them: he made the mainspring out of a piece of whalebone. He then made a wooden clock which kept good time. He began, also, to copy pictures with a pen, and portraits with oil colors. In a few years, while still a small boy, he earned money enough to support his father. When he became a man, he went to London to live. Some of the wisest men in England, and the king himself, used to attend his lectures. His motto was, "I will think of it;" and he made his thoughts useful to himself and the world.When you have a difficult lesson to learn, don't feel discouraged, and ask someone to help you before helping yourselves.Think, and by thinking you will learn how to think to some purpose.
1. What is the main idea of this passage?
A/Great geniuses didn't have to think.
B/We should always think.
C/Isaac Newton was a thinker.
D/Galileo was a thinker.
2. What caused Galileo to invent the pendulum?
A/Seeing a cathedral.
B/Thinking about apples.
C/Seeing a chandelier swing and thinking.
D/Thinking about gravity.
3. Why did the king attend James Ferguson's lectures?
A/Because Ferguson taught about pendulums.
B/Because Ferguson was a brilliant thinker.
C/Because the king was jealous of Ferguson's intelligence.
D/Because Ferguson was an entertaining speaker.
4.How is Galileo similar to Isaac Newton?
A/ They were born at the same time.
B/ They have nothing in common.
C/ They are both great thinkers.
D/ They both discovered gravity.
5.Why did James Ferguson decide to make a watch?
A/Because he was curious after seeing the inside of a watch.
B/Because the king asked him to.
C/Because he needed to support his sick father and mother.
D/Because he was poor and needed the money.
In the United States of America, English is(1)..also.the national language, the language of the (2)..American. national. Four hundred years ago, some English people (3)..came. to North America to live(4).there.. and they (5)..brought. the English language to this new country. After them (6)..many. people from all the countries of Europe. And they all learned English (7)..because. they made it a little (8).difference.. from British English. In the USA now people speak American English. Very many words are the(9).same.. in America and in Btitish English, but the American people do not speak the English language in the same way(10).as.. people do in England.
Read the passage carefully, then choose the correct answer
The first system of communication of animals is natural. Many kinds of animals have ways of communicating with each other. And one of the most interesting examples is that of bees. These insects communicate with each other by dancing. The most important kind of dance that they do is concerned with food. They get their food from flowers, of course, from plants and trees. When a bee has found some food, it returns to the other bees and can give them three basic kinds of information about the food: which direction it is in, whether it is nearby or a long way away, and whether it is good to eat or poisonous.
The other kind of system of communication of animals is artificial. It means animals learn it; in this case, they learn from man. Several famous experiments have been carried out with chimpanzees, trying to teach them human language.
One of these experiments was done with a chimpanzee called Sarah. Sarah was taught to understand a system of symbols which represented words. The symbols were cut out of coloured plastic, and each different shape stood for a different word. For example, a red square stood for “banana”, Sarah’s favorite fruit. Soon Sarah could not only understand words, but even sentences. She could obey orders: if her human friends put down the symbols for “apple in cup”, she would put the apple in the cup. Later, she began giving the scientists orders – she was writing her own sentences, and she got upset if the scientists did not obey her. We do not yet know whether chimpanzees will ever learn to use language to communicate as freely as human beings do, but the results so far suggest that this is at least a possibility.
41) According to the passage, bees ____________________________________.
A. learn to communicate B. are born to be able to communicate
C. are the most interesting animals D. communicate with each other by flying
42) From the passage, we can conclude that bees are _____________________.
A. so selfish as to let other bees share the bad food
B. so selfish as to look for food for themselves
C. so hardworking that they dance all the time
D. so smart that they know where the food is
43) The experiment done with Sarah is an example of ____________________.
A. animals with natural system of communication
B. animals able to communicate with humans
C. animals possible to use language as humans
D. animals with a system of communication worked out by humans
44) The results of the experiment with chimpanzees show the possibility to teach animals _____.
A. how to use language freely
B. how to give orders
C. how to obey orders
D. how to understand words and sentences
45) The phrase “concerned with” is closest in meaning to ________________.
A. interested in B. responsible for C. related to D. joined to
Read the passage carefully, then choose the correct answer
The first system of communication of animals is natural. Many kinds of animals have ways of communicating with each other. And one of the most interesting examples is that of bees. These insects communicate with each other by dancing. The most important kind of dance that they do is concerned with food. They get their food from flowers, of course, from plants and trees. When a bee has found some food, it returns to the other bees and can give them three basic kinds of information about the food: which direction it is in, whether it is nearby or a long way away, and whether it is good to eat or poisonous.
The other kind of system of communication of animals is artificial. It means animals learn it; in this case, they learn from man. Several famous experiments have been carried out with chimpanzees, trying to teach them human language.
One of these experiments was done with a chimpanzee called Sarah. Sarah was taught to understand a system of symbols which represented words. The symbols were cut out of coloured plastic, and each different shape stood for a different word. For example, a red square stood for “banana”, Sarah’s favorite fruit. Soon Sarah could not only understand words, but even sentences. She could obey orders: if her human friends put down the symbols for “apple in cup”, she would put the apple in the cup. Later, she began giving the scientists orders – she was writing her own sentences, and she got upset if the scientists did not obey her. We do not yet know whether chimpanzees will ever learn to use language to communicate as freely as human beings do, but the results so far suggest that this is at least a possibility.
41) According to the passage, bees ____________________________________.
A. learn to communicate B. are born to be able to communicate
C. are the most interesting animals D. communicate with each other by flying
42) From the passage, we can conclude that bees are _____________________.
A. so selfish as to let other bees share the bad food
B. so selfish as to look for food for themselves
C. so hardworking that they dance all the time
D. so smart that they know where the food is
43) The experiment done with Sarah is an example of ____________________.
A. animals with natural system of communication
B. animals able to communicate with humans
C. animals possible to use language as humans
D. animals with a system of communication worked out by humans
44) The results of the experiment with chimpanzees show the possibility to teach animals _____.
A. how to use language freely
B. how to give orders
C. how to obey orders
D. how to understand words and sentences
45) The phrase “concerned with” is closest in meaning to ________________.
A. interested in B. responsible for C. related to D. joined to
