global warming is caused by high levels of dangerous gases in the atmosphere.
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20 tháng 8 2021 lúc 10:07
IX. Read the text and fill in one word which best fits each gap.One of the (1) __________ in global warming is carbon monoxide. The more carbon monoxide in the atmosphere, the (2) _________ the atmosphere is able to clean itself. The result is a warming of the atmosphere, the so-called global warming, and possibly ozone damage. Earlier, it was found that carbon monoxide was concentrated in the Southern Hemisphere, and could (3) _________ attributed to deforestation. Huge areas of forest...
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IX. Read the text and fill in one word which best fits each gap.
One of the (1) __________ in global warming is carbon monoxide. The more carbon monoxide in the atmosphere, the (2) _________ the atmosphere is able to clean itself. The result is a warming of the atmosphere, the so-called global warming, and possibly ozone damage.
Earlier, it was found that carbon monoxide was concentrated in the Southern Hemisphere, and could (3) _________ attributed to deforestation. Huge areas of forest and grasslands in South America and Africa have been burned, putting carbon monoxide into the (4) __________. Recently, (5) __________, the Southern Hemisphere has been found to be clean, while the Northern Hemisphere is more polluted than expected.
The latest research was (6) __________ during the northern winter. The high levels in the Northern Hemisphere could be because of this. In winter carbon monoxide is destroyed more slowly. There are (7) ________ more fires burned in winter, and possibly industrial processes work harder. It could also reflect the ever-increasing (8) _________ of cars on the roads. Optimists hope that the reason (9) ________ the North
Global warming happens when there is too much carbon dioxide in the atmosphere. (result)
Question. Climate change and global warming are the main reasons of natural disasters. *
A. Natural disasters are mainly caused by climate change and global warming.
B. Natural disasters mainly cause climate change and global warming.
C. Climate change and global warming are mainly caused by natural disasters.
D. Natural disasters is mainly caused by climate change and global warming.
Water pollution is a major global problem which requires ongoing evaluation and revision of water resource policy at all levels. It has been suggested that water pollution is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily. An estimated 580 people in India die of water pollution related illness every day. About 90 percent of the water in the cities of China is polluted. As of 2007, half a billion Chinese had no access to sa...
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Water pollution is a major global problem which requires ongoing evaluation and revision of water resource policy at all levels. It has been suggested that water pollution is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily. An estimated 580 people in India die of water pollution related illness every day. About 90 percent of the water in the cities of China is polluted. As of 2007, half a billion Chinese had no access to safe drinking water. In addition to the acute problems of water pollution in developing countries, developed countries also continue to struggle with pollution problems. For example, in the most recent national report on water quality in the United States, 44 percent of assessed stream miles, 64 percent of assessed lake acres, and 30 percent of assessed bays and estuarine square miles were classified as polluted. The head of China’s national development agency said in 2007 that one quarter the length of China’s seven main rivers were so poisoned the water harmed the skin.
Water is typically referred to as polluted when it is impaired by anthropogenic contaminants and either does not support a human use, such as drinking water, or undergoes a marked shift in its ability to support its constituent biotic communities, such as fish. Natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water.
1. What is the leading worldwide cause of deaths and diseases?
2. How many people die every day by water pollution?
3. How many percent of the water in the cities of China is polluted?
5. What phenomena cause major changes in water quality and the ecological status of water?
8. One of the major hazard for deep-sea divers is the “bend”. This condition is caused by gas bubbles forming in the bloodstream if the diver ascends too rapidly. The reason for this condition has to do with the saturation and desaturation of body tissues with various gases. At increasingly greater depths, the diver brathes air at higher perssures. This result in an increased quantity of air being dissolved in the bloodstream. Different body tissues are saturated with different gases from the ai...
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8. One of the major hazard for deep-sea divers is the “bend”. This condition is caused by gas bubbles forming in the bloodstream if the diver ascends too rapidly. The reason for this condition has to do with the saturation and desaturation of body tissues with various gases. At increasingly greater depths, the diver brathes air at higher perssures. This result in an increased quantity of air being dissolved in the bloodstream. Different body tissues are saturated with different gases from the air at different rates. When the diver ascends, oxygen is used by the body tissues, carbon dioxide is released quickly, and nitrogen remains. The nitrogen needs to be release gradually from the bloodstream and body tissues. If nitrogen is subjected to a too rapid pressure reduction,, it forms gas bubbles in the blood vessels. The bubbles become trapped in the capilaries. This prevents blood and oxygen from supplying necessary nutrients to body tissues, which consequently begin to die.
Saturation and desaturation are affected by various factors such as the depth, length of time, and amount of exertion under water. There are other factors that a diver must take into account when determining a safe ascent rate. These include the diver’s sex and body build, the number of divers undertaken within the previous 12 hours, the time spent at the dive location befor the dive, and the composition of the respiration gas.
1. The passage is mainly about
A. how to calculate a safe depth when diving
B. how to determine saturation and desaturation rates
C. instructions for diving safely
D. the factors causing the bends in divers
2. According to the passage, gas bubbles
Trap the capillaries
B. are gradually released from the tissues and bloodstream
C. block the supply of nutrients to body tissues.
D. are formed from compressed air
3. Which of the following does not affect the desaturation of body tissues?
A. The location of the diver
B. The number of the previous divers.
C. The composition of the gas being use.
D. The amount of activity under water
4. According to the passage, bends
A. is the major diving hazard
B. reduced pressure in the bloodstream
C. is a condition caused by diving too quickly
D. is a direct result of dying body tissues
5. According to the passage, which of the following is not true?
A. Air at higher pressure is taken in at greater depths
B. More air is dissolved into the bloodstream at increasing depths
C. Carbon dioxide stays in the body when the diver ascends.
D. Body tissues are saturated at different rates
Combine the sentences in each pair into a new sentence that shows a cause/ effect relationship. Use cause and effect signal word or phrase given in brackets. 1. One effect of global warming is that sea levels are rising. The polar icecaps are melting. (because) 2. The global population has increased. There are much better levels of nutrition. (because of)3. Nuclear explosions and detonations of nuclear weapons cause radioactive pollution....
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Combine the sentences in each pair into a new sentence that shows a cause/ effect relationship. Use cause and effect signal word or phrase given in brackets.
1. One effect of global warming is that sea levels are rising. The polar icecaps are melting. (because)
2. The global population has increased. There are much better levels of nutrition. (because of)
3. Nuclear explosions and detonations of nuclear weapons cause radioactive pollution. (lead to)
4. More and more roads are being built. Air pollution is rising. (as a consequence)
5. In the last ten years, many BC valleys have been clearcut. 142 species of salmon have become extinct. (so)
6. The fish and other aquatic animals have died. The water is polluted. (due to)
Colds and flu are caused by viruses. The infections are contagious, passed on by tiny droplets and hand contact. There are hundreds of different types of virus that can cause cold, which explains why children get repeated colds. Flu is caused by the influenza virus. There are three major types: A (often the cause of flu epidemics), B and C. The flu virus is constantly changing its structure, so new strains appear each year. We don’t have immunity to the new strains, which is why we can catch flu...
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Colds and flu are caused by viruses. The infections are contagious, passed on by tiny droplets and hand contact. There are hundreds of different types of virus that can cause cold, which explains why children get repeated colds. Flu is caused by the influenza virus. There are three major types: A (often the cause of flu epidemics), B and C. The flu virus is constantly changing its structure, so new strains appear each year. We don’t have immunity to the new strains, which is why we can catch flu repeatedly. Anyone can catch a cold or flu. The peak season for colds is the colder winter months, not only because of the weather but because central heating dries out the normally moist nasal mucosa-an important defense against invading viruses. However, you can catch a cold at any time of the year; one particular type of cold virus thrives in the summer. Flu rarely occurs outside November to February in the UK. A cold causes a stuffy or runny nose, sneezing, sore throat, cough, mild fever and tiredness, lasting from two to four days. Flu is more severe with a high fever (usually 39oC or above), chills, headache, intense muscle pains, exhaustion, loss of appetites, cough and sometimes a blocked nose and sore throat. It may last a week or more and possible complications include pneumonia. Most cold don’t last long and need no specific treatment other than painkillers and simple measures such as decongestant rubs or vaporizers. Antibiotics are of no benefit. Zinc supplements may help to settle a cold more quickly. Children with flu can be given similar treatments, with lots of rest, medicine to bring down any fever and plenty of fluids to avoid dehydration. Lowering the temperature in the room can also be helpful when someone has a fever. Specific antiviral treatments for flu are now available, but generally these are only given to those at high risk of flu complications.
1. What are cold and flu caused by?
…………………………………………………………………………
2. Why do children get repeated colds?
……………………………………………………………………………
3. How many influenza viruses is flu caused by? What are they?
………………………………………………………………………………………………………….
4. Who can catch a cold or flu?
…………………………………………………………………………………………………………..
5. Which season do people usually get cold the most in the year?
……………………………………………………………………………………………………………
6. What symptoms do colds often cause?
………………………………………………………………………………………………………………..
7. How many days does a cold last?
………………………………………………………………………………………………………………………..
8. What symptoms does flu often cause?
……………………………………………………………………………………………………………………………
9. How long does flu last?
……………………………………………………………………………………………………………………………..
10. When someone gets colds, what measures should be used instead of painkillers?
………………………………………………………………………………………………………………………..
FUTURE OF TECHNOLOGY Technology is growing by leaps and bounds. Proper use of technology holds a bright future for us. So, how can technology shape up the future in a better way? Let’s take a look! Clean Energy Global energy consumption is increasing and we will face a shortage of fossil fuels in the Corning decades. However, technology is helping us deal with this problem by developing clean energy. Development in the field of solar power technology has drastically reduced the cost of solar cel...
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FUTURE OF TECHNOLOGY
Technology is growing by leaps and bounds. Proper use of technology holds a bright future for us. So, how can technology shape up the future in a better way? Let’s take a look!
Clean Energy
Global energy consumption is increasing and we will face a shortage of fossil fuels in the Corning decades. However, technology is helping us deal with this problem by developing clean energy. Development in the field of solar power technology has drastically reduced the cost of solar cells. Generation of electricity through wind turbines has also grown rapidly in the recent years. So, in the near future, technology can help us do away with dependence on fossil fuels and embrace clean and green energy Solutions.
Virtual Reality (VR)
Remember Pokemon Go? Well, that was one of the earliest examples of Virtual reality. Tech giants like Google, Facebook, and Nokia are spending a huge amount of money to make VR experience better for the customers. However, with time and further developments, VR can be used for communication through holograms, for interacting with 3-D objects and other useful and educational purposes.
Flying cars
This sounds straight out of a movie, but flying cars might soon be mainstream. Amazon has already started delivering goods with the help of its drones, and Google is working on building its own powerful drones. A couple of start-ups are also working on building flying cars. A flying car for all intents and purposes is a drone that is capable of carrying people. There are already a handful of flying vehicle prototypes: Terrafugia has TF-X; Pal-V has the Pal-V1; I-TEC has the Maverick LSA “Flying Car”; and lastly AeroMobil s.r.o. has the AeroMobil 3.0.
These are just a few of the amazing technologies that we will have in the corning years. And what’s next? Teleporting? Anything is possible!
A. Match the words or phrases with their meanings.
1. by leaps and bounds 2. do away with 3. embrace 4. hologram 5. mainstream 6. drone 7. start-up 8. prototype | a. completely accept b. considered normal and used by most people c. a company that is just beginning to operate d. very quickly e. an aircraft without a pilot, controlled from the ground f. the first model of something new g. a three-dimensional image h. put an end to |
Dịch bài khóa sau:Rising sea levels are threatening parts of the Egyptian coastal city of Alexandria. Alexander the Great established the city more than 2,000 years ago. In that time, it has survived invasions, fires and earthquakes. But, Alexandria now faces severe flooding from rising waters blamed on climate change.Alexandria is Egypt’s second largest city, with more than 5 million people. It is also an important port and home to about 40 percent of Egypt’s industrial activity. The city is su...
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Dịch bài khóa sau:
Rising sea levels are threatening parts of the Egyptian coastal city of Alexandria. Alexander the Great established the city more than 2,000 years ago. In that time, it has survived invasions, fires and earthquakes. But, Alexandria now faces severe flooding from rising waters blamed on climate change.
Alexandria is Egypt’s second largest city, with more than 5 million people. It is also an important port and home to about 40 percent of Egypt’s industrial activity. The city is surrounded on three sides by the Mediterranean Sea and sits next to a lake.
Officials have built concrete barriers in the sea in an effort to reduce the force of waves. A severe storm in 2015 flooded large parts of the city. At least six people were killed in the flooding, which also caused the collapse of many homes.
The United Nations has warned that worldwide sea levels could rise by 0.98 meters by 2100, with “serious implications for coastal cities, deltas and low-lying states.”
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