fill CHEMICALS-COLLECTED-FLATTENED-FROM- HARDEN-KNOWN-LATER-PRODUCT Rubber is one of the most useful substances (1).........to man .It can be found in many things around us, like car tires and chewi...

fill CHEMICALS-COLLECTED-FLATTENED-FROM- HARDEN-KNOWN-LATER-PRODUCT Rubber is one of the most useful substances (1).....known....to man .It can be found in many things around us, like car tires and chewing gum.Rubber is made (2).....from......a milky liquid called latex. latex is obtained from rubber trees. After the latex has been (3)....collected....and the dirt removed, it is poured into large tanks and left to(4).......harden.......When the latex is hardended, it is dried and sent to factories. At the factories, the rubber is (5)....flattened......into thin sheets and special (6)...chemicals..are added to it. The sheets of rubber are (7)...later...sent to other factories which manufacture rubber (8)........product........Câu trả lời: fill CHEMICALS-COLLECTED-FLATTENED-FROM- HARDEN-KNOWN-LATER-PRODUCT Rubber is one of the most useful substances (1).....known....to man .It can be found in many things around us, like car tires and chewing gum.Rubber is made (2).....from......a milky liquid called latex. latex is obtained from rubber trees. After the latex has been (3)....collected....and the dirt removed, it is poured into large tanks and left to(4).......harden.......When the latex is hardended, it is dried and sent to factories. At the factories, the rubber is (5)....flattened......into thin sheets and special (6)...chemicals..are added to it. The sheets of rubber are (7)...later...sent to other factories which manufacture rubber (8)........product........

fill CHEMICALS-COLLECTED-FLATTENED-FROM- HARDEN-KNOWN-LATER-PRODUCT Rubber is one of the most useful substances (1)......

Hãy tham gia nhóm Học sinh Hoc24OLM

ND

Nguyễn Thùy Dương

22 tháng 5 2016 lúc 0:23

I. Put one suitable word in each gap in the following text.Enjoyment is what drinking wine is all about. However, the more you know, …………… (1) easier it becomes to select the right wines for you or your guests. Wine is basically grape juice to …………… (2) yeast has been added causing it to ferment and produce alcohol. Alcohol is flavourless, so there must be something more …………… (3) wine than this. Many of the secrets of wine lie within the grape. Its pulp is a sugar solution which contains the th...

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I. Put one suitable word in each gap in the following text.

Enjoyment is what drinking wine is all about. However, the more you know, …………… (1) easier it becomes to select the right wines for you or your guests. Wine is basically grape juice to …………… (2) yeast has been added causing it to ferment and produce alcohol. Alcohol is flavourless, so there must be something more …………… (3) wine than this. Many of the secrets of wine lie within the grape. Its pulp is a sugar solution which contains the things that give a wine its fruity flavour. In a dry wine, most of a grape’s sugar has been converted …………… (4) alcohol. In a sweet one, more sugar is left. This can be felt on the …………… (5) of the tongue. The pulp also contains acidity which gives the wine ‘’crispness’’ that makes the mouth water. Too much …………… (6) it can make you wince, too little and the wine could taste dull. The skin contains flavour and tannin. Tannin produces a tingling sensation in the gums and gives a wine firmness. White grapes have their skins removed before fermentation so tannin is only really found in red wines. The pulp of black and white grapes is …………… (7) same pale colour. The fact that the skins of black grapes are left on …………… (8) the wine is fermented gives red wine its colour. The wines which are often considered to be the best are …………… (9) where all the elements balance one another. There are many grape varieties grown in many climates which influence the emphasis given to these features and this is …………… (10) wines can be so wonderfully different.

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Lớp 12 Tiếng anh Luyện tập tổng hợp

DA

Đặng Thùy An

19 tháng 2 2019 lúc 20:41

I.REARRANGEMENT: 1. vegetable matter/into/we make/and fertilise our fields/compost. 2.information/like Friends of the Earth/contact/for/an organization. 3.compost/farmers/collect household/garden waste/and/to make. 4.What/to prevent people/from thowing trash/the government do/did? 5.can be/milk bottles/being cleaned/after/recycled. 6.in June/ we are/seeing you/looking forward/to. 7.environmentally friendly products/in order to/our beautiful environment/try to use/protect. 8.for/farmers u...

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I.REARRANGEMENT:

1. vegetable matter/into/we make/and fertilise our fields/compost.

2.information/like Friends of the Earth/contact/for/an organization.

3.compost/farmers/collect household/garden waste/and/to make.

4.What/to prevent people/from thowing trash/the government do/did?

5.can be/milk bottles/being cleaned/after/recycled.

6.in June/ we are/seeing you/looking forward/to.

7.environmentally friendly products/in order to/our beautiful environment/try to use/protect.

8.for/farmers use/their fields/animal dung/fertilizing.

9.are thrown away/every single year/old car tires/of/Millions

10.when/to the glass/to the factories/what happens/it is sent/?

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Lớp 12 Tiếng anh Luyện tập tổng hợp

CD

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

DD

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

HV

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

H24

░▒▓█ ๖ۣۜTɦïếυ•Gîล █▓▒░

15 tháng 11 2019 lúc 19:58

Television is an important invention of the twentieth century. It hasbeen ....(1).... popular that now we can t imagine what life would be .....(2) ....... if there were no television. Television is a major ....(3).... of communication. It brings pictures andsounds from around the world into millions of homes. Through ....(4)....,viewers can see and learn about people, places and things in farawaylands.Television ....(5).... our knowledge by introducing to us new ideas ....(6).... may lead us t...

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Television is an important invention of the twentieth century. It hasbeen ....(1).... popular that now we can ' t imagine what life would be .....(2) ....... if there were no television. Television is a major ....(3).... of communication. It brings pictures andsounds from around the world into millions of homes. Through ....(4)....,viewers can see and learn about people, places and things in farawaylands.Television ....(5).... our knowledge by introducing to us new ideas ....(6).... may lead us to new hobbies and recreations. In addition ....(7).... the news, television provides us with a variety ofprograms that can satisfy ....(8).... taste. Most people now seem to like

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Lớp 12 Tiếng anh Luyện tập tổng hợp

LK

Le Trung Le Kim

4 tháng 2 2018 lúc 19:30

I. Choose the suitable words or phrases to fill in the blanks (3ms) 1. Cool the burns immediately so as to. . . . . . . . . . . . tissue damage. A. ease B. relieve C. minimize D. maximize 2. Milk bottles can be. . . . . . . . . . . . . . . . . . after being cleaned A. reused B. recycle C. thrown away D. broken 3. The old lamp. . . . . . . . . . . . . . . in china is five dollars A. make...

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I. Choose the suitable words or phrases to fill in the blanks (3ms)

1. Cool the burns immediately so as to. . . . . . . . . . . . tissue damage.

A. ease B. relieve C. minimize D. maximize

2. Milk bottles can be. . . . . . . . . . . . . . . . . . after being cleaned

A. reused B. recycle C. thrown away D. broken

3. The old lamp. . . . . . . . . . . . . . . in china is five dollars

A. make B. makes C. to make D. made

4. Millions of Christmas cards. . . . . . . . . . . . . . . every year

A. were sent B. are sent C. send D. is sending

5. He had his father. . . . . . . . . . . . . . . . . . . . . his watch

A. fixed B. fixing C. to fix D. fix

6. He asked me. . . . . . . . . . . . . . . a driving license

A. if I have B. whether I have C. if I had D. whether I have had

II. Complete the passage with the suitable words in the box

Relatives; top; preparations; holiday; put; are; although; bought

Christmas is the biggest. . . . . . . . . . . . . . . . (1) of the year in the most of Britain. Celebrations start on 24 December, Christmas eve,. . . . . . . . . . . . . . . . (2) there have been several weeks of. . . . . . . . . . . . . . . . . . (3) before hand. The Christmas trees, presents, food, drinks and decorations have been. . . . . . . . . . . . . . . (4). Christmas cards have already been sent to friends and. . . . . . . . . . . . . . . . (5). About a week before Christmas, people usually. . . . . . . . . . . . . (6) up their decorations and an angel on the. . . . . . . . . . . . . . . . . (7) of the Christmas tree. Family presents. . . . . . . . . . . . . (8) usually put under the tree.

III. Read the passage choose true (T) or false (F)

London is Britain/s biggest city. It is a very old city and dates back to the Romans. It is a city of historic building and churches, and it has many beautiful parks. It also has some of the best museum in the world. London is very crowded in summer. It is a popular city with foreign tourists and has more than eight million visitors a year. The city is famous for its shopping and department stores. London has an excellent underground railway system, so it is easy for tourists to get around.

1. None of the cities in Britain is bigger than London.

2. London is founded by the Romans.

3. London has historic buildings and churches.

4. Most of the best museum in the world are situated in London.

5. London is not busy in summer.

6. It's not easy for tourists to travel around London.

IV. Complete the second sentence so that it has the same meaning to the first (2ms)

1. People speak English over the world.

English. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Do you mind if I take a photo

Would you mind. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Lớp 12 Tiếng anh Luyện tập tổng hợp

NH

Nguyễn Võ Văn Hùng

23 tháng 3 2017 lúc 21:40

Đoạn văn này hoàn chỉnh chưa Nowadays, pollution is a popular term with everyone in the world and air pollution is one type of pollution. The definition of air pollution is one such form that refers to the contamination of the air, irrespective of indoors or outside. A physical, biological or chemical alteration to the air in the atmosphere can be termed as pollution. There are some main reasons which cause air contamination such as burning of fossil fuels, agricultural activities, exhaust from...

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Đoạn văn này hoàn chỉnh chưa

Nowadays, pollution is a popular term with everyone in the world and air pollution is one type of pollution. The definition of air pollution is one such form that refers to the contamination of the air, irrespective of indoors or outside. A physical, biological or chemical alteration to the air in the atmosphere can be termed as pollution. There are some main reasons which cause air contamination such as burning of fossil fuels, agricultural activities, exhaust from factories and industries, mining operations, and indoor air pollution. Air pollution always has bad effects on our life. Harmful gases, dust, and smoke enter into the atmosphere and make it difficult for plants, animals and humans to survive. We also can see some examples of the result of air contamination which occurs around us as global warming, acid rain, and depletion of ozone layer. The effects of air pollution are alarming, so governments over the world should have suitable policies of protecting the environment, especially air quality to create a clean world for our generation in the future.

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Lớp 12 Tiếng anh Luyện tập tổng hợp

CH

Chu Hồng

6 tháng 4 2020 lúc 19:59

Read the following text and decide if each sentence below is correct or incorrect. Stamp collecting- Its a hobby that can grow and grow Millions of people of all ages enjoy a hobby which is both interesting and fun. And every year, more and more people start a stamp collection of their own and discover an interest which can last a lifetime. Starting your collection is easy because stamps are everywhere. Holiday postcards from friends, birthday cards from favourite aunts and letters from p...

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Read the following text and decide if each sentence below is correct or incorrect.

Stamp collecting- It's a hobby that can grow and grow

Millions of people of all ages enjoy a hobby which is both interesting and fun. And every year, more and more people start a stamp collection of their own and discover an interest which can last a lifetime. Starting your collection is easy because stamps are everywhere. Holiday postcards from friends, birthday cards from favourite aunts and letters from pen-friends can all provide you with stamps from all over the world. But once you've started collecting seriously, you will probably want to join the Stamp Collectors' Club which exists to provide collectors with new British stamps. As a Club member you order the special sets of new stamps you want for your collection. You can receive these in three different ways. We can either post you a complete set of stamps on an envelope addressed to you, or send you the same stamps in a colourful information pack with lots of interesting facts. Or, if your prefer, we can send you the individual stamps for you to arrange in special book of your own. The Stamp Collectors' Club has about 70.000 members and you could become a member too, with a two-year membership costing just $5. You can even get a reduction if a group of you joint at the same time. We're sure you'll agree that this is great value for money. And when you join, the Club sends you a Starter Pack at no extra cost. This contains 100 stamps to begin your collection, together with an attractive box to keep them in. You also receive our helpful 4-page guide to collecting, which has further suggestions on how to add to your collection and includes useful addresses of shops and businesses that sell stamps. Every two months you'll get a copy of the club magazine, which is packed full of competitions and quizzes, and gives you to chance to exchange stamps with members around the world. Why not start on an adventure which will give you years of pleasure? You'll spend many happy hours looking at the amazing variety of stamps in your collection or searching for unusual ones which you know are out there somewhere just waiting to be found. So join the Stamp Collectors' Club today and discover the fun and excitement of stamp collecting. To join the Club simply complete the application form and send your membership fee. Ypur Starter Pack will be sent within 28 days of receipt of your application. 1. The Stamp Collectors' Club sends you special stamps from many different countries. 2. The Club sends every member the same set of new stamps. 3. Information packs include a full set of stamps. 4. It costs $5 a year to join the Stamp Collectors' Club. 5. It is cheaper if several people joing the Club together. 6. The Club sends each new member a hundred free stamps. 7. The guide tells you where you may be able to buy the stamps you want. 8. Members of the Club are sent a monthly magazine. 9. The magazine helps you to contact other members. 10. You must write a letter to the Club if you want to join.

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Lớp 12 Tiếng anh Luyện tập tổng hợp

Luyện tập tổng hợp

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