Each sentence has a mistake. Find it bychosing A B C or D

When children get their first pair of glasses, they are often surprise to see that trees and flowers have sharp clear outlines

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
Under certain circumstances, the human body must cope with gases at greater-than-normal atmospheric pressure. For example, gas pressures increase rapidly during a drive made with scuba gear because the breathing equipment allows divers to stay underwater longer and dive deeper. The pressure exerted on the human body increases by 1 atmosphere for every 10 meters of depth in seawater, so that at 39 meters in seawater a diver is exposed to pressure of about 4 atmospheres. The pressure of the gases being breathed must equal the external pressure applied to the body,

otherwise breathing is very difficult. Therefore all of the gases in the air breathed by a scuba diver at 40 meter are present at five times their usual pressure. Nitrogen, which composes 80 percent of the air we breathe, usually causes a balmy feeling of well-being at this pressure. At a depth of 5 atmospheres, nitrogen causes symptoms resembling alcohol intoxication, known as nitrogen narcosis. Nitrogen narcosis apparently results from a direct effect on the brain of the large amounts of nitrogen dissolved in the blood. Deep dives are less dangerous if helium is substituted for nitrogen, because under these pressures helium does not exert a similar narcotic effect.
As a scuba diver descends, the pressure of nitrogen on the lungs increases. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues The reverse occurs when the diver surfaces, the nitrogen pressure in the lungs falls and the nitrogen diffuses from the tissues into the blood, and from the blood into the lungs. If the return to the surface is too rapid, nitrogen in the tissues and blood cannot diffuse out rapidly enough and nitrogen bubbles are formed. They can cause severe pains, particularly around the joints.
Another complication may result if the breath is held during ascent. During ascent from a depth of 10 meters, the volume of air in the lungs will double because the air pressure at the surface is only half of what it was at 10 meters. This change in volume may cause the lungs to distend and even rupture. This condition is called air embolism.
To avoid this event, a diver must ascend slowly, never at a rate exceeding the rise of the exhaled air bubbles, and must exhale during ascent.

The word “they” in bold in paragraph 2 refers to     .

Read the following passage and choose the best answer (A, B, C, D):
The Moon is our close cosmic neighbor, and humans have been exploring its surface ever since they first developed telescopes. The first lunar exploration vehicles of the 1950s were primitive pioneers. But aerospace technology developed so rapidly that only about a decade separated the first flyby forays and Neil Armstrong’s history-making steps on the Moon’s surface. In January 1959, a small Soviet sphere bristling with antennas, dubbed Luna 1, flew by the Moon at a distance of some 3,725 miles (5,995 kilometers). Though Luna 1 did not impact the Moon’s surface, as was likely intended, its suite of scientific equipment revealed for the first time that the Moon had no magnetic field. The craft also returned evidence of space phenomena, such as the steady flow of ionized plasma now known as solar wind. Later in 1959, Luna 2 became the first spacecraft to land on the Moon’s surface when it impacted near the Aristides, Archimedes, and Autolycus craters. A third Luna mission subsequently captured the first blurry images of the far–or dark–side of the Moon. In 1962 NASA placed its first spacecraft on the Moon—Ranger 4. The Ranger missions were kamikaze missions; the spacecraft were engineered to streak straight toward the Moon and capture as many images as possible before crashing onto its surface. Unfortunately, Ranger 4 was unable to return any scientific data before slamming into the far side of the Moon. Two years later, however, Ranger 7 streaked toward the Moon with cameras blazing and captured more than 4,000 photos in the 17 minutes before it smashed onto the surface. Images from all the Ranger missions, particularly Ranger 9, showed that the Moon’s surface was rough. They spotlighted the challenges of finding a smooth landing site on its surface. In 1966 the Soviet spacecraft Luna 9 overcame the Moon’s topographic hurdles and became the first vehicle to soft-land safely on the surface. The small craft was stocked with scientific and communications equipment and photographed a ground level lunar panorama. Luna 10 launched later that year and became the first spacecraft to successfully orbit the  Moon. The Surveyor space probes (1966-68) were the first NASA craft to perform controlled landings on the Moon’s surface. Surveyor carried cameras to explore the Moon’s surface terrain, as well as soil samplers that analyzed the nature of lunar rock and dirt. In 1966 and 1967 NASA launched lunar orbiters that were designed to circle the Moon and chart its surface in preparation for future manned landings. In total, five lunar orbiter missions photographed about 99 percent of the Moon’s surface. On July 20, 1969, Neil Armstrong and Edwin “Buzz” Aldrin became the first people to reach the Moon when their Apollo 11 lunar lander touched down in the Sea of Tranquility. Later missions carried a lunar rover that was driven across the satellite’s surface, and saw astronauts spend as long as three days on the Moon. Before the Apollo project ended in 1972, five other missions and a dozen men had visited the Moon. After the dramatic successes of the 1960s and 1970s, the major space programs turned their attention elsewhere for a period of several decades. 
6. What is the synonym of the word “panorama” in paragraph 3?

Read the following passage and choose the best answer (A, B, C, D)
Chances are that your next CEO will be a she and your next congressman will be a congresswoman. After thousands of years of oppression, women across the world are occupying key positions in all spheres of society. The ever-evolving human desire drives the development of men and women alike. Over the past 60 years, we have witnessed a conspicuous change in women’s desire. Women wish to be less and less involved in household management and child care, and are increasingly expanding their involvement in other areas of society. At the same time, the world is pushing towards greater equality, and women assume roles and responsibilities previously only filled by men. Technology also plays a significant role in helping free up women’s time. Just as diapers and baby formula were a tremendous help for mothers, emerging robotics and artificial intelligence solutions will reduce the burden of household management to a level we have never seen. As the world becomes more interdependent, it demands the intervention of women, as though it were asking them to put their unique qualities into practice. A woman’s character is much more responsible, stable and consistent. She is capable of absorbing many changes and coping with long-term challenges — a quality that comes from her natural ability to carry an embryo and develop life within her. A man, on the other hand, is better at short-term moves. A woman is capable of holding onto a large number of tasks as well as carry them out successfully. A man, on the other hand, is more successful in linear processes aimed at a narrow goal. This is why most scientific breakthroughs, for example, manifest through the male brain. Men and women are also different in their attitude to failure in life. Figuratively speaking, a man can be as strong as iron — and yet one blow can break him. The woman is easier to bend — but like a flexible tree branch, she is much harder to break. The mutual completion of each other’s qualities is the key to building a healthy society in the new era. The integration of women in the leadership of society and other systems of human life is becoming necessary. The maternal qualities are expanding from the personal home to the global home. The female nature and drive to create a supportive and embracing environment will be expressed in society in creating healthy and proper conditions for bonding between people.  
8. Which of the following can be inferred from the passage?

Read the following passage and choose the best answer (A, B, C, D):
There is a new type of advertisement becoming increasingly common in newspaper classified columns. It is sometimes placed among “situations vacant”, although it does not offer anyone a job, and sometimes it appears “situations wanted”, although it is not placed by someone looking for a job, either. What it does is to offer help in applying for a job. “Contact us before writing your application”, or "Make use of our long experience in preparing your curriculum vitae or job history”, is how it is usually expressed. The growth and apparent success of such a specialized service is, of course, a reflection on the current high levels of unemployment. It is also an indication of the growing importance of the curriculum vitae (or job history), with the suggestion that it may now qualify as an art form in its own right. There was a time when job seekers simply wrote letters of application. “Just put down your name, address, age and whether you have passed any exams”, was about the average level of advice offered to young people applying for their first jobs when I left school. The letter was really just for openers, it was explained, everything else could and should be saved for the interview. And in those days of full employment, the technique worked. The letter proved that you could write and were available for work. Your eager face and intelligent replies did the rest. Later, as you moved up the ladder, something slightly more sophisticated was called for. The advice then was to put something in the letter which would distinguish you from the rest. It might be the aggressive approach. “Your search is over. I am the person you are looking for,” was a widely used trick that occasionally succeeded. Or it might be some special feature specially designed for the job in view  
6. The word "worked” in the third paragraph is closest in meaning to ____.

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
There has been much debate over the past few decades concerning fears that automation will lead to robots replacing human workers on a massive scale.
The increasing use of robotics, computers and artificial intelligence is a reality, but its full implications are far from cut and dried. Some forecasts present the future in a utopian way, claiming that robots will take over the tedious heavy work thus freeing up human time and potential, allowing for more creativity and innovation. At the other end of spectrum are those who foresee an employment apocalypse, predicting that almost fifty percent of all American jobs could vanish within the next few decades. Former Microsoft chairman Bill Gates states that in 20 years robots could be in place in a number of job categories, particularly those at lower end of the scale in terms of skills.
The bottom line is that while the future is always uncertain, robots are a fixture of our society, which is not going to disappear. As with the Industrial Revolution, where machines were utilized in many tasks in place of manual laborers and social upheaval followed, the Digital Revolution is likely to place robots in various jobs. In spite of that, many of today’s jobs were not in existence before the Industrial Revolution, such as those of programmers, engineers and data scientists. This leads other experts to criticize this alarmist approach of robot scare-mongering, which is invariably compared to the 19th-century “Luddites”. This group was textile workers who feared being displaced by machines and resorted to violence, burning down factories and destroying industrial equipment – their rejection of inevitable progress has come to symbolize mindless ignorance.
Needless to say, exactly what new kinds of jobs might exist in the future is difficult to envision at present. Therefore, the crux of the issue is not whether jobs will be lost, but whether the creation of new vacancies will outpace the ever-increasing number of losses and what skills will be required in the future.
It is clearly not all doom and gloom, as demand for employees with skills in data analysis, coding, computer science, artificial intelligence and human-machine interface is rising and will continue to do so. Furthermore, the demand for skills in jobs where humans surpass computers, such as those involving  care, creativity and innovative craftmanship, are likely to increase considerably. Ultimately, the key lies in the adaptation of the workforces, through appropriate education and training, to keep pace with our world’s technological progress.

Why is the example of the Industrial Revolution given?

Read the following passage and choose the best answer (A, B, C, D):
Rogue waves are extremely large waves that are more than double the average height of most waves. According to mathematical calculations and various personal accounts, rogue waves can reach remarkable heights. They appear unexpectedly in calm waters and can do major damage, even to large ships. Unlike tsunamis, which are practically undetectable in deep water, rogue waves only occur far out at sea. Stories about rogue waves have circulated amongst sailors for centuries, but it was not until recently that scientists confirmed they actually exist. What they still are not sure of, however, is what causes them. Some instances of rogue waves have been explained by the interactions of normal wave patterns with ocean currents. Scientists believe that it is possible for waves to reach the heights described when they come into contact with strong ocean currents. The wave heights increase significantly when a normal wave reaches a current head on. In other words, the wave is built up by the power of the current. This explanation was first proposed after scientists observed a high incidence of rogue waves in the ocean surrounding the southern tip of Africa. In fact, since 1990, at least twenty ships have encountered the waves, which reportedly reached up to 190 feet. The waves are thought to be caused by wave interactions with the strong Agulhas Current, which runs southbound along the east coast of the continent.  
7. The word "which" in the third paragraph refers to ____

Read the following passage and choose the best answer (A, B, C, D):
It’s probably the most painstaking, heart wrenching, and stress inducing test of dedication a marriage can face. But the reward at the end is pretty sweet. At the annual Wife Carrying World Championships in Sonkajärvi, Finland, male competitors race around a track hauling their female partners on their backs. Winner takes home his wife’s weight in beer. It’s no ordinary racetrack, either. Competitors must wade through a neck-deep pool of water, climb over hurdles, and run through pits of sand before crossing the finish line. While some participants don crazy costumes for the pre-race, the actual event is pretty straightlaced. Wives must weigh at least 49 kilograms (108 pounds). Any woman lighter than that is required to carry a heavy rucksack until she reaches this minimum. A participant who drops his wife will be penalized 15 seconds. But there is one catch: contestants don’t have to carry their own wives. A friend’s wife, stranger’s wife, or even a random grandmother will do – as long as she’s over 17. Contestants flock from 47 countries across the globe to show their stuff in this epic display of brute strength. This year, Finnish couple Taisto Miettinen and Kristiina Haapanen captured the title for the fourth consecutive year. The 46-year-old lawyer and his wife completed the 235-meter course in one minute and four seconds. Like any dedicated athlete, Miettinen reported that he’d been training for a while. “In last autumn, I started running in the track, one hundred, two hundred and four hundred meters,” Miettinen said in a post-race interview. He also practiced the course in ski boots to build leg strength. The competition, which began in 1992, is supposedly rooted in the legend of Ronkainen the Robber — a hardnosed gang leader who hazed potential members by making them lug sacks of grain or live pigs over a similar course. He and his comrades also made a habit of stealing women from neighboring villages as a nod to this practice, many men “steal” friends’ wives for the competition. If you want to compete but can’t make it to Finland, there’s a North American version of the contest held in October at Sunday River Resort in Maine. With 100-plus pounds of brewski on the line, you might want to tell your significant other to start shaping up.
8. What does the author imply in the last paragraph?

Find mistake:
Her brother is interested in to join the English Club.

Read the following passage and choose the best answer (A, B, C, D):
The climate crisis is poised to deliver a severe blow to America’s most threatened animals, with a new study finding that almost every species considered endangered is vulnerable in some way to global heating. Of the 459 animal species listed as endangered by the US government, researchers found that all but one, or 99.8%, have characteristics that will make it difficult for them to adapt to rising temperatures. The California condor, once close to being completely wiped out, faces increased risk of contamination in hotter conditions. Key deer, found only in the Florida Keys, face losing habitat to the rising seas. Whole classes of animals including amphibians, mollusks and arthropods are sensitive to the greatest number of climate-related threats, such as changes in water quality, shifting seasons and harmful invasive species that move in as temperatures climb. Mammals, such as the north Atlantic right whale and Florida panther, also face increased hardships, albeit on fewer fronts than amphibians, mollusks and arthropods.  Despite the overwhelming peril faced by America’s endangered species due to the climate crisis, the report, published in Nature Climate Change, found a patchy response from the US government. Federal agencies consider just 64% of endangered species to be threatened by the climate crisis, while just 18% of listed species have protection plans in place. Astrid Caldas, a study co-author and a climate scientist at the Union of Concerned Scientists said: “While agencies have increasingly listed climate change as a growing threat to species whose survival is already precarious, many have not translated this concern into tangible actions, meaning a significant protection gap still exists.” Nearly half of Australian species are threatened by the climate crisis, researchers have found. A spokesman for the US Fish and Wildlife Service, which oversees the endangered species list, said that while a species may be sensitive to changes in the climate, this sensitivity may not be so severe as to warrant being put on the list. “Our process for determining this looks at five factors: threats to a species’ habitat, overutilization, disease or predation, existing regulatory mechanisms, and other factors that may affect its continued existence,” he said. “Through this scientifically rigorous process we examine and account for the effects of climate change.  
3. According to paragraph 2, what did the author imply when listing several species and their situation?

Choose the best answer:
The local government suggested ……. a road through the Nam Cat Tien National Park.

Choose the best answer:
I think my parents will be _________ when hearing that I passed the exam with flying colours.

Read the following passage and choose the best answer (A, B, C, D):
Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth. Overpopulation is caused by number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which results in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life. The effects of overpopulation are quite severe. The first of these is the depletion of resources. The Earth can only produce a limited amount of water and food, which is falling short of the current needs. Most of the environmental damage being seen in the last fifty odd years is because of the growing number of people on the planet. They are cutting down forests, hunting wildlife in a reckless manner, causing pollution and creating a host of problems. Those engaged in talking about overpopulation have noticed that acts of violence and aggression outside of a war zone have increased tremendously while competing for resources. With the overuse of coal, oil and natural gas, it has started producing some serious effects on our environment. Rise in the number of vehicles and industries have badly affected the quality of air. Rise in amount of CO2 emissions leads to global warming  Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth. Overpopulation is caused by number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which results in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life. The effects of overpopulation are quite severe. The first of these is the depletion of resources. The Earth can only produce a limited amount of water and food, which is falling short of the current needs. Most of the environmental damage being seen in the last fifty odd years is because of the growing number of people on the planet. They are cutting down forests, hunting wildlife in a reckless manner, causing pollution and creating a host of problems. Those engaged in talking about overpopulation have noticed that acts of violence and aggression outside of a war zone have increased tremendously while competing for resources. With the overuse of coal, oil and natural gas, it has started producing some serious effects on our environment. Rise in the number of vehicles and industries have badly affected the quality of air. Rise in amount of CO2 emissions leads to global warming  
2. The word "sustain" in paragraph 1 is closest in meaning to ______

Read the following passage and choose the best answer (A, B, C, D):
You’ll be able to purchase high-quality emotions online. Emotion-sharing experiences  are the latest fad in 2045. Imagine your friend at Glastonbury can post a photo on Instagram and with it comes bundled a faint twinkling of what she was feeling right there in that moment, so you too can share emotionally in her social experience.  Recently, techniques for direct brain stimulation, like opt genetics, have made it possible to not only read but also write information into single neurons. At the moment data transfer rates are still very slow, the best we can do is a few bits per second, but this could well increase to kilobits or maybe reach broadband speeds by 2045. This means the range of human perception could expand beyond its current design limitations. One could foresee a new and extraordinary world where there is a virtual marketplace for trading high quality emotions – where artists looking for a particularly high strength brew of melancholy, or actors needing to channel regret or compassion for their next play, could purchase emotions online.  Our cities will be made from living, dynamic materials that respond to the environment. In 30 years, tall buildings made of glass and twisted steel will be seen as relics from a bygone era, in the same way we think now of 1970s concrete tower blocks: ugly, outdated and unfit for contemporary purpose. The urban environment of 2045 blends architecture with living materials that are mouldable, adaptable, responsive and disposable.  Entirely new synthetic life forms, or biological machines, made of engineered living cells from bacteria, fungi and algae will grow and evolve with the changing needs of a building’s inhabitants. They breathe in pollutants, clean wastewater, and use sunlight to make useful chemicals, energy, heat and vibrant vertical gardens. We will start to see a convergence between biology and technology, to the point where there is no longer a perceptible difference between the two. Today, synthetic biology labs are looking at the full diversity of what nature has to offer and using this to mix, match and edit genomes to design synthetic life forms. Right now, this field is just getting started and the science of synthetic biology is going to be tougher than most will admit.  We will use invisibility cloaks to “disappear” ugly objects. Invisibility has forever been a tantalizing prospect. The key to cloaking lies in the way the electromagnetic spectrum  (including visible light) interacts with objects. The human eye picks up electromagnetic radiation that falls and scatters from objects and we perceive this as light. In recent decades, scientists figured out using mathematics that it might just be possible to imagine a new class of artificial materials made of intricate tiny features with light bending properties. They named them metamaterials.  Using nanotechnology engineering, scientists have since shown cloaking actually works – in principle at least, for a narrow range of colours and only from certain viewing angles. The future applications of cloaking are highly uncertain and will likely be determined by the fads and social contagion of the time. They may be used in everything from novelty gimmicks to making unsightly construction sites and power stations seemingly ‘disappear’.   
2. The word “perception” in the second paragraph mostly means ____

Read the following passage and choose the best answer (A, B, C, D):
Advances in technology have generated revolutionary applications that could change the face of education as we know it today. Online learning, also known as electronic learning, may (33)......the future of education thanks to recent developments in the Internet and multimedia technologies.It is anticipated that cyberspace institutions or online universities will replace traditional educational (34) .......Virtual classrooms will be multi-functional, acting simultaneously as learning platforms, forums and (35).......networks. They will be geared towards promoting the acquisition of knowledge as a life- long endeavour, (36)........occurs through global collaboration. Cyberspace institutions can go a long way towards achieving this as they are able to liberate us from the limitations of time and space. Flexibility of time and location makes e-learning a highly accessible, international resource. (37) .........., prospective students will, regardless of age, background or origin, have unlimited access to both formal and informal learning opportunities. The pursuit of knowledge will consequently become an end in itself and not a means to an end

Read the following passage and choose the best answer (A, B, C, D):
Where humans have planted crops for food, unless they are organic, poisonous chemicals have been sprayed on them; insecticides are used to kill insect pests and herbicides are used to kill weeds. Fungicides fight off fungal diseases. Artificial fertilizers are added to the soil to increase the yield of the crops. If these chemicals are used in excess, some of them dissolve in rainwater and drain into rivers, streams and ponds, polluting the water and killing the wildlife. The “weeds” competing with the farmers’ crops include wild flowers and many of these have become endangered through the use of herbicides. Insects rely on plants for food and breeding sites so the number of these are affected by a reduction in the number of plants. Many birds depend on insects for food so the numbers of birds may be affected by the use of both insecticides and herbicides. One of the reasons why the Barn Owl is endangered is due to a shortage of insects and it may also be poisoned by eating insects affected by chemical sprays. The case of DDT and other chemicals known as organo-chlorines is well known. These were first used extensively in the 1950s, sprayed onto crops to kill insect pests. Unfortunately, after a few years, it was noticed that birds of prey were rapidly declining in numbers and thousands of seed-eating birds were dying. By the 1960s, the once common sparrow hawk was a rare bird in Britain. The sparrow hawk’s prey was the seed-eating birds which were carrying the poisonous insecticides in their bodies. Consequently, many sparrow hawks and other birds of prey were being indirectly poisoned by the chemical sprays. The organo-chlorines also caused many birds to lay thin shelled eggs, which cracked easily. Research showed that the chemicals were entering the food chains and being stored in the fat of the animals’ bodies. For example, a thrush may eat snails which have eaten a sprayed cabbage plant. The thrush may not have eaten enough poison to be actually killed but a sparrowhawk eating several thrushes accumulates so much of the poison that it is killed. The chemicals become more concentrated as they travel up the food chain. Even most humans still have small amounts of organo-chlorines in their fatty tissues although these chemicals had been withdrawn from use by 1976. They are still used, however, in some Third World countries. By the 1980s, the sparrowhawk population had recovered dramatically and it is once again a common bird. This example shows just how dangerous the use of chemicals in the environment can be. As mentioned earlier, some plants are endangered through collectors such as the Venus fly-trap and some tropical orchids, but most threatened plants have become so through the destruction of their habitat. Once very common plants have almost disappeared because of the way humans have changed the land. For example, the Egyptian Papyrus, a type of reed, had been used for thousands of years for all sorts of things such as paper, medicine, boats, baskets, food etc. Then, when changes in the irrigation methods on the river Nile were introduced, this valuable plant almost completely disappeared. It was thought to be extinct until 1968 when a few plants were found in an undisturbed waterway. Orchids have been also collected from rainforests to become household favourites, causing many species to become endangered.  
3. What will happen to the insect-eating birds if the weeds are in danger?

Each sentence has a mistake. Find it bychosing A B C or D

 Nylon, a synthetic, make from a combination of water and a by-product of coal, was first introduced in 1938

Read the following passage and choose the best answer (A, B, C, D):
Global sea level has been rising over the past century, and the rate has increased in recent decades. In 2014, global sea level was 2.6 inches above the 1993 average-the highest annual average in the satellite record (1993-present). Sea level continues to rise at a rate of about one-eighth of an inch per year. Higher sea levels mean that deadly and destructive storm surges push farther inland than they once did, which also means more frequent nuisance flooding. Disruptive and expensive, nuisance flooding is estimated to be from 300 percent to 900 percent more frequent within U.S. coastal communities than it was just 50 years ago. The two major causes of global sea level rise are thermal expansion caused by warming of the ocean since water expands as it warms, and increased melting of land-based ice, such as glaciers and ice sheets. The oceans are absorbing more than 90 percent of the increased atmospheric heat associated with emissions from human activity. With continued ocean and atmospheric warming, sea levels will likely rise for many centuries at rates higher than that of the current century. In the United States, almost 40 percent of the population lives in relatively high-population-density coastal areas, where sea level plays a role in flooding, shoreline erosion, and hazards from storms. Globally, eight of the world’s 10 largest cities are near a coast, according to the U.N. Atlas of the Oceans. Sea level rise at specific locations may be more or less than the global average due to local factors such as land subsidence from natural processes and withdrawal of groundwater and fossil fuels, changes in regional ocean currents, and whether the land is still rebounding from the compressive weight of Ice Age glaciers. In urban settings, rising seas threaten infrastructure necessary for local jobs and regional industries. Roads, bridges, subways, water supplies, oil and gas wells, power plants, sewage treatment plants, landfills-virtually all human infrastructure-is at risk from sea level rise. 
4. What does the word “it” in paragraph 3 refer to?

Read the following passage and choose the best answer (A, B, C, D):
Coal, oil and gas get more than $370bn a year in support, compared with $100bn for renewables, the International Institute for Sustainable Development (IISD) report found. Just 10-30% of the fossil fuel subsidies would pay for a global transition to clean energy, the IISD said. Ending fossil fuel subsidies has long been seen as vital to tackling the climate emergency, with the G20 nations pledging in 2009 to phase them out, but progress has been limited. The new analysis shows how redirecting some of the fossil fuel subsidies could decisively tip the balance in favour of green energy, making it the cheapest electricity available and instigating a rapid global rollout. The transition from polluting fossil fuels to clean energy is already under way. Annual investment in renewables has been greater than that in fossil fuel electricity generation since 2008 and new renewable capacity has exceeded fossil fuel power each year since 2014. But progress is slow compared with the urgency required, said Bridle. “There is no question that renewables can power the energy system,” he said. “The question now is can we transit quickly enough away from fuels like coal, and subsidy reform is a very obvious step towards that.  Reform of fossil fuel subsidies could have a significant impact on global heating. An earlier IISD study of 20 countries with large fossil fuel subsidies found that a 30% swap to renewables would lead to emissions reductions of between 11% and 18%. Most experts define fossil fuel subsidies as financial or tax support for those buying fuel or the companies producing it. The IMF also includes the cost of the damage fossil fuel burning causes to climate and health, leading to an estimate of $5.2tn of fossil fuel subsidies in 2017, or $10m a minute. Ending the subsidies would cut global emissions by about a quarter, the IMF estimates, and halve the number of early deaths from fossil fuel air pollution. Bridle said funding fossil fuel subsidies was “madness”, but said ending them could cause short-term price rises and political difficulties, as the benefits of lower costs in the future and reduced air pollution are less obvious. “There are political problems but it is worth persevering because the prize is so big,” he said. “You have to bring people along with you.” Gençsü said governments must ensure that the most vulnerable people were not adversely affected by changes. 
1. Which best serves as the title for the passage?

Read the following passage and choose the best answer (A, B, C, D):
Once restricted to space stations and satellites, photovoltaics are now gaining popularity and becoming an increasingly viable option. Every day, the sun releases an enormous amount of energy, far more than the entire population consumes. Being that the sun is a sustainable, renewable, and inexhaustible source for generating electricity, not using it seems almost counter-intuitive, especially considering the social and environmental impacts of other forms of energy generation. But the technology to create electricity from the sun is by no means simple and still has some limitations, the most significant being price. The process of turning the sun’s rays into electrical energy all starts in the so-called photovoltaic cell. These cells are produced with two chemically altered silicon layers of which one is missing elections and the other is electron-overloaded. When the photons from the sunlight reach the surface, these electrons gain the ability to move, generating a flow that creates an electric current. Each cell generates a small amount of energy and a panel is usually made of between 36 and 72 photovoltaic cells. By connecting several panels together, a photovoltaic system is created. Eight to ten panels is enough to power a small house. Evidently, however, this statistic is influenced by some factors, such as the efficiency of the panels, the amount of sunshine in the region, and the energy demand of the residence itself.  Importantly, photovoltaic solar panels produce electricity in the form of direct current, meaning the electricity must pass through an inverter to transform it into alternating current - which is what is normally used in buildings, appliances, sockets, and light bulbs. Photovoltaic systems can facilitate energy generation in remote locations where infrastructural networks do not reach. In these cases, the system uses batteries to store electricity when less energy is used than is consumed, such as at night or on very cloudy days. However, it is also possible to use photovoltaics in systems connected to the power grid. In these cases, the excess energy goes to the electricity grid, creating energy “credits” for the building in question. In some countries, it is even possible to sell surplus energy, making the building a power plant for neighbors and method of paying off the investment more quickly.  
3. According to paragraph 1, why is overlooking solar energy considered such a mistake?

Read the following passage and choose the best answer (A, B, C, D):
Go is a game that has been around for 3000 years. It is widely accepted as the most challenging strategy game that exists. It takes years of playing for several hours every day to master the game. In other words, even though it has simple rules, it is not a simple game to excel at. Surprise! Deep Mind managed to create a machine that could master the game, without being programmed with explicit rules and without being taught by a professional Go player. AlphaGo mainly played against itself and learned from this self-play. At its core, it learned like a human learns, by looking at the board, evaluating the options, making moves, and learning from mistakes - it just did it a lot faster than any human can. This is extremely exciting because, at its core, what it means is that computer scientists have had all the tools they needed to do this for years. Neural networks have been known about and discussed since the middle of the last century. All it really took was simply getting creative with them, applying them in new ways. AlphaGo beating the world’s best Go player proves that AI has the potential to do anything. It can learn anything and understand anything, and from that learning and understanding it can accomplish what humans can accomplish in a much shorter period of time. You’re probably wondering what this all means. We’re much closer to the dream of an AI best friend than most of us would have dared to imagine a few years ago. AlphaGo can learn the most complex, intuition and creativity based logic game known to man and it didn’t do so through a finite database or search trees alone. It learned from practice and experience, just like we do, and the ability to create amazing new solutions to ancient puzzles suggests a realm of digital creativity never before fathomed. AlphaGo is not like other game playing AIs that have come before it. It is the future of intelligent and intuitive machines, one that we plan to turn toward more than just board games. From practical applications to that friend you’ve been hoping for, AlphaGo is sure to be the first of a new generation of self-learning intuitive AIs that go above and beyond the limited calculating capacities of its older siblings and contemporaries. The AI winter is over.
8. Which of the following can be inferred from the passage?