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Whether a species is endangered—meaning at risk of extinction—depends on which definition you use. The International Union for Conservation of Nature’s Red List of Threatened Species classifies an animal as endangered when its numbers in the wild have dropped so low that it’s at “extremely high risk” of extinction. Meanwhile, the United States’ Endangered Species Act of 1973 takes into consideration any destruction to a species’ habitat, whether it has been over-consumed, any disease or predation that threaten it, whether any other man-made factors put it in danger, and what policies currently exist to protect it. When members of the public or a state agency propose to the U.S. Fish & Wildlife Service or the National Marine Fisheries Service that a species be listed as endangered under the law, research and management plans are formed to help those species survive. It is illegal under the Endangered Species Act to capture, hunt, shoot, or otherwise harm an animal that’s listed as endangered. Sometimes, federal agencies decide that although a species could be considered endangered, other species are higher priorities. In those cases, the animal or plant gets limited protections. One animal whose numbers have increased through conservation is the bald eagle. There were only about 500 bald eagles in the continental United States in the 1960s because of pesticides that damaged the shells of their eggs. Conservation efforts including captive breeding programs, habitat protection, and a ban on the insecticide DDT helped the bald eagle’s numbers soar back into the thousands. Another is the giant panda, which was declared no longer endangered in 2016 thanks to 50 years of efforts to save it. U.S. Rep. John Dingell, who wrote the Endangered Species Act, argued that “only natural extinction is part of natural order.” Scientists believe that 227 species - including the grizzly bear, the peregrine falcon and the gray wolf - were saved from extinction in the first 33 years of the law’s existence. Still, critics argue that the act is expensive and ineffective because it protects so many species. Several federal courts have heard and rejected arguments that the Endangered Species Act is unconstitutional, and members of Congress have tried to weaken the law in small ways.
6. Which of the following statements is TRUE, according to the passage?

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Advances in mobile technology and social networking websites mean we spend more time online than ever before. If Facebook were a country, it would be the third largest in the world by population (The Economist, 2010). It is (1) ______ not surprising that so many psychologists, sociologists, and others are eager to give their thoughts on how this is impacting negatively on our society. The biggest criticism levelled at social networking is that young people are losing their offline friends to online friends (2) ______ are unable to provide the same deep connection and emotional support. However, a lot of research shows these criticisms are generally (3) ______. Allen et al. (2010) discovered that it is socially adjusted adolescents who are more likely to have a networking profile than those who are not. One study by the Pew Internet and American Life Project (2009) found that people are not (4) ______ offline friends with online companions but are using them to support their offline relationships. The study also found that social networks allow us to have discussions with a much more diverse set of people than in the real world, so we share knowledge with people from a wide (4) ______ of backgrounds

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According to the report, we can expect some pretty remarkable changes to our homes  and our personal spaces, overlooked things that make up so much of our daily routine. As human populations soar, our cities and homes will have to adapt; interior living spaces will change as a cloud changes, easily reconfigured and rearranged to suit our fickle tastes, or accommodate different purposes.  Imagine walls and floors made of a malleable “skin,” and embedded with tiny sensors and actuators so that the shape and size of living spaces can quickly change, or even be divided into smaller rooms; imagine fully programmable “smart homes” that can be controlled remotely, and provide feedback to their owners - yes, there’ll even be an app for that.  Virtual decorations will alter with changing tastes, moods and whims; and the entire interior surface of the home will be implanted with LED technology - television screens and computer displays will form and unform in any room, as needed. Even our furniture will be adaptable, molding to custom fit our bodies, responding to changes in posture, or disappearing altogether when not needed.  It will be the ultimate evolution of the “Internet of Things.” Misplaced something? Can’t find your keys? No problem. Just use an online search function to find it. Hate the color of that accent wall? Delete it. Need more storage space? Watch new shelves appear, as if by magic. And the amenities are fantastic. Every home will come standard with a 3D printer; they’ll be able to churn out just about anything you could wish, using downloadable patterns, probably including even complex electronic devices. They may even print out your meals, designed and programmed by the world’s master chefs.  Walk-in “medical pods,” meanwhile, will contribute to the decentralization of healthcare - their imaging sensors will diagnose your ills and, for the more easily treatable maladies, dispense drugs, inject antibiotics, and recommend health regimens. It may even be possible to undergo remote, robot-mediated surgery, in the comfort of your own home.  This barely scratches the surface. Imagine homes whose very building material is salted with dormant limestone-producing bacteria, which awaken upon contact with moisture and repair any cracks or structural damage.  There will be “digestion tanks” full of anaerobic bacteria, to dispose of our waste; and our homes will produce, store, and reuse their own energy, using “microbial fuel cell stacks” and more efficient solar panels to generate electricity, and power-banks like the Tesla power wall to store it against future use. Personal homes will be almost fully independent of a dangerously overtaxed energy grid.  One hundred years in the future, our houses will be, in almost all respects, semiliving, artificial organisms - closed systems with a metabolism, sensory apparatus, immune response, and an approximation to a nervous system. We’ll be living in homes that are practically alive.
7. Which of the following about our future home is NOT mentioned in the passage?

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Going to a restaurant shouldn’t be your excuse to eat unhealthy foods. Follow these tips and not only will you enjoy your meal more, you’ll feel satisfied and happy when you’re done. First, ask for it your way. Dining out is no time to be a meek consumer, notes Michael F. Jacobson, Ph.D., executive director of the Center for Science in the Public Interest (CSPI) and coauthor of the book Restaurant Confidential. “You need to be an assertive consumer by asking for changes on the menu,” he says. For instance, if an item is fried, ask for it grilled. If it comes with French fries, ask for a side of veggies instead. Ask for a smaller portion of the meat and a larger portion of the salad; for salad instead of coleslaw; baked potato instead of fried. “Just assume you can have the food prepared the way you want it,” says Dr. Jacobson. “Very often, the restaurant will cooperate.” Second, order A Salad before ordering anything else on the menu. Scientists at Pennsylvania State University found that volunteers who ate a big veggie salad before the main course ate fewer calories overall than those who didn’t have a first-course salad, notes Novick. However, remember: Salads Shouldn’t Be Fatty. This is a vegetable course-keep it tasty but healthy. That means avoiding anything in a creamy sauce (coleslaw, pasta salads, and potato salads), and skipping the bacon bits and fried noodles. Instead, load up on the raw vegetables, treat yourself to a few well-drained marinated vegetables (artichoke hearts, red peppers, or mushrooms), and for a change, add in some fruit or nuts. Indeed, fruits such as mango, kiwi, cantaloupe, and pear are often the secret ingredient in four-star salads.  
5. Which of the followings is the best title for the passage?

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The Greenbox emerged as Ireland’s first and most successful integrated ecotourism destination with a set of standards based on sound environmental practices highlighting all (1) ____ the region and its people had to offer. The Greenbox aimed to deliver environmentally sustainable tourism products, accommodation and attractions. Such tourism activity would have minimal impact (2) ____ the ecology of the area, be of maximum benefit to the local communities and (3) ____ the needs of the environmentally conscious visitor. The Greenbox encompassed an area covering all of Leitrim and Fermanagh and parts of Donegal, Sligo and Cavan. The Greenbox promoted travel which is small scale, low impact, culturally sensitive and community orientated, and provided a marketing tool for businesses that were grounded in sustainable principles and (4) ____ within the Greenbox area. The concept was broader than (5) ____ established definition of tourism, embracing activities such as organic food production, rural transport, energy and waste management

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Children’s behaviour has worsened over the past five years, according to a survey of  teachers which found that a fifth thought girls were more likely to cause trouble than boys. The survey, published after teachers at a Lancashire school went on strike over discipline, found low-level disruption, including chatting and “horsing around”, was the biggest problem. Boys were more likely to be physically aggressive while girls tended to ostracise other pupils. The behaviour of boys was more of a challenge than that of girls but the actions of each sex had deteriorated, according to 56.5% of staff surveyed by the Association of Teachers and Lecturers (ATL).  Among male pupils the most challenging behaviour for teachers was physical aggression, such as pushing, spitting, kicking and hitting. A secondary teacher quoted in the survey said boys were usually aggressive with other pupils, while girls tended to call one another names. Teachers criticised a lack of role models in the home. A primary teacher said: “The boys are far more willing to be aggressive to adults, verbally and even physically. There don’t seem to be any parental boundaries set of what is an appropriate way to speak and deal with another adult.” Teachers at Darwen Vale high school, Lancashire, walked out over unruly pupil behaviour this month. They said children challenged them to fights and threatened to film lessons and post them online. The survey of more than 850 teachers, heads and other school staff found that more than 21% thought girls’ behaviour was more challenging than boys, compared with 68% who said male pupils caused more trouble. In schools that have excluded pupils, 57% said more boys and 5% said more girls had been excluded. A department head in a primary school told the survey, carried out in March, that “classes with a majority of boys tend to be louder, less co-operative and harder to teach”. Nearly half of the staff surveyed said boys’ bravado was behind their disruption. For girls, the most likely trigger was a break-up between friends. A primary school teacher from Bedfordshire said: "Boys are generally more physical and their behaviour is more noticeable. Girls often say nasty things, which end up disrupting the lesson just as much as the boys, as other children get upset and can’t focus on their work. They are usually the ones who refuse to comply with instructions." Some staff had noticed girls’ behaviour worsening.” A teaching assistant from Weston-super-Mare said: “Girls are definitely getting more violent, with gangs of girls in school who are getting worse than the gangs of boys.” The ATL annual conference in Liverpool on Monday is due to debate a motion expressing concern at increasing numbers of girls being excluded from secondary school.  Government figures for 2008-9 showed that boys represented 78% of the total number of permanent exclusions from schools in England. This proportion was unchanged from the year before. The ATL general secretary, Mary Bousted, said: "Staff get ground down daily by the chatting and messing around, which disrupts lessons for other pupils and takes the pleasure out of teaching. Even more worrying is the physical aggression, most often among boys but also among some girls, which puts other pupils and staff at risk. Schools need to have firm and consistent discipline policies and work with parents to keep schools and colleges safe places for pupils and staff alike." The education bill, now going through the Commons, will give teachers the right to search pupils for banned items and will remove the requirement to give parents a day’s notice of detention. The education secretary, Michael Gove, said the measures in the bill would “restore discipline” in the classroom.
7. Which of the following best reflects the suggestion of the author to reduce bad behavior of children in the last paragraph?

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Many scientists believe our love of sugar may actually be an addiction. When we eat or drink sugary foods, the sugar enters our blood and affects parts of our brain that make us feel good. Then the good feeling goes away, leaving us wanting more. All tasty foods do this, but sugar has a particularly strong effect. In this way, it is in fact an addictive drug, one that doctors recommend we all cut down on. “It seems like every time I study an illness and trace a path to the first cause, I find my way back to sugar,” says scientist Richard Johnson. One- third of adults worldwide have high blood pressure, and up to 347 million have diabetes. Why? "Sugar, we believe, is one of the culprits, if not the major culprit," says Johnson. Our bodies are designed to survive on very little sugar. Early humans often had very little food, so our bodies learned to be very efficient in storing sugar as fat. In this way, we had energy stored for when there was no food. But today, most people have more than enough. So the very thing that once saved us may now be killing us. So what is the solution? It’s obvious that we need to eat less sugar. The trouble is, in today’s world, it’s extremely difficult to avoid. From breakfast cereals to after-dinner desserts, our foods are increasingly filled with it. Some manufacturers even use sugar to replace taste in foods that are advertised as low in fat. But there are those who are fighting back against sugar. Many schools are replacing sugary desserts with healthier options like fruit. Other schools are growing their own food in gardens, or building facilities like walking tracks so students and others in the community can exercise. The battle has not yet been lost.  
2. The word "culprit" in paragraph 2 is closest in meaning to __________ 

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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. 
2. The word “deadly” in paragraph 2 is closest in meaning to ______

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

His comments sparked an angry respond from dissatisfied customers.
 

Choose the best answer:
My friend/ never/ ride/ horse/ before.

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Living things include both the visible world of animals and plants as well as the invisible world of (1) __________ and viruses. On a basic level, we can say that life is ordered. Organisms have an enormously complex organization. Life can also “work”. Living creatures can take in energy from the environment. This energy, in the form of food, is changed to maintain (2) __________ processes and for survival. Life grows and develops. This means more than just getting larger in size. Living organisms also have the ability to rebuild and repair themselves when injured. Life can reproduce. Life can only come from other living creatures. Life can respond. Think about the last time you accidentally stubbed your toe. (3 )____________ instantly, you moved back in pain. Finally, life can adapt and respond to the demands placed on it by the environment. There are three basic types of adaptations that can occur in higher organisms. Reversible changes occur as a response to changes in the environment. Let’s say you live near sea level and you travel to a mountainous area. You may begin to experience difficulty breathing and an increase in heart rate (4) __________ the change in height. These signs of sickness go away when you go back down to sea level. Body- related changes happen as a result of (5) ___________ changes in the environment. Using the previous example, if you were to stay in the mountainous area for a long time, you would notice that your heart rate would begin to slow down and you would begin to breath normally. These changes are also reversible

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Light-emitting diodes (LEDs) are now considered the future of lighting due to a lower energy requirement to run, a lower monthly price tag, and a longer life than traditional incandescent light bulbs. Nick Holonyak, an American scientist at General Electric, accidently invented the red LED light while trying to create a laser in the early 1960s. As with other inventors, the principle that some semiconductors glowed when an electric current was applied had been known since the early 1900s, but Holonyak was the first to patent it for use as a light fixture. Within a few years, yellow and green LEDs were added to the mix and used in several applications including indicator lights, calculator displays, and traffic lights, according to the DOE. The blue LED was created in the early 1990s by Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura, a group of Japanese and American scientists, and for which they won the 2014 Nobel Prize in Physics. The blue LED allowed scientists to create white LED light bulbs by coating the diodes with phosphor Today, lighting choices have expanded and people can choose different types of light bulbs, including compact fluorescent (CFL) bulbs work by heating a gas that produces ultraviolet light and LED bulbs. Several lighting companies are pushing the boundaries of what light bulbs can do, including Phillips and Stack. Phillips is one of several companies that have created wireless light bulbs that can be controlled via smartphone app. The Phillips Hue uses LED technology that can quickly be turned on or off or dimmed by a flick on a smart phone screen and can also be programmed. The higher-end Hue light bulbs can even be set to a large range of colors (only about sixteen million) and synced with music, movies, and video games. Stack, begun by engineers from Tesla and NASA, developed a smart light bulb using LED technology with a wide range of functions. It can automatically sense the ambient lighting and adjust as needed, it turns off and on via motion sensor when someone enters the room, can be used as a wake up alert, and even adjusts color throughout the day to fit with human’s natural circadian cycles and patterns of natural light. The light bulbs also have a built-in learning program that adapts to inputs given by residents over time. And all of these functions can be programmed or monitored from any smart phone or tablet. It is estimated that Stack smart light bulbs can use about sixty percent less energy than a typical LED light bulb and lasts between twenty and thirty thousand hours depending on the model . These light bulbs are compatible (or soon will be) with many of the options for turning an entire home into a smart home including usage with Amazon Alexa, Google Home, and Apple HomeKit.
4. The word “which” in paragraph 3 refers to _____

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Preschool offers many benefits. It can be a great place for kids to interact with peers and learn valuable life lessons such as how to share, take turns, and follow rules. But going to preschool does come with some emotions, for both the parent and the child. For a child, entering a new preschool environment (1) ___________ with unfamiliar teachers and kids can cause both anxiety and excitement. Parents might have mixed emotions about (2) ___________ their child is ready for preschool. When you enter the classroom on the first day, calmly reintroduce the teacher to your child, then step back to allow the teacher to begin (3) __________ a relationship with your child. Your endorsement of the teacher will show your child that he or she will be happy and safe in the teacher’s care. If your child clings to you or refuses to participate in the class, don’t get upset — this may only upset your child more. Always say a loving goodbye to your child, but once you do, leave (4)________. Don’t sneak out. Leaving without saying goodbye can make kids feel abandoned. A long farewell, on the other hand, might only reinforce a child’s sense that preschool is a bad place. A consistent and predictable farewell routine can make leaving easier. Some parents wave from outside the classroom window or make a funny goodbye face, while others have a special handshake before parting. Transitional objects — a family picture, a special doll, or a favorite blanket — can also help comfort a child. Also, (5)___________ in mind that most kids do well after their parents leave

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A question I was asked about the readiness for independence (or lack thereof) during the last stage of adolescence (ages 18 - 23) was this: “How can parents teach independence?” From what I’ve seen, there are at least four components to this training: responsibility, accountability, work, and self-help. And this instruction can start as soon as (1) ____ begins, (usually between ages 9 and 13) if not before. Young people who learn independence can often say: “I (2) ____ my freedom by acting responsibly (I did what was right even when it was hard to do),” “I was held (3) ____ for my bad choices and paid for my mistakes (I faced my consequences),” “I worked to get a lot of what I wanted (it wasn’t all handed to me),” “I developed the resourcefulness to help myself (4) ____ with difficulty (I met my problems head on).” Young people who seem to get stuck in their dependent ways often have parents who, with the most loving motivation, undermine the growth of independence. They give freedom without demanding evidence of responsibility. “If you really want to do it, that’s enough for us to say okay.” They rescue from or ignore bad choices without (5) ____ on accountability. “You didn’t know any better so we’ll overlook what you did.” They provide whatever is wanted without having the child work for any of it. “We’ll just get it for you.” They weaken with so much help when difficulties arise that the capacity for self-help is disabled. “We’ll fix what you did and take care of it

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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

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The Nobel Prizes were established by the Swedish inventor, Alfred Bernhard Nobel. Nobel was the inventor of dynamite. (1) ____ his invention brought him much wealth and fame, Nobel realized how destructive dynamite could be. His own brother was (2) ____ in an explosion while working in the laboratory. Nobel thus spent a lot of time and energy promoting world peace to reduce the need to use dynamite in war. He also advocated the settlement of conflicts through diplomatic means. Before Nobel died, he (3) ____ his money to establish a fund. Every year, the interest from this fund was to be given to the person who has done the most good for mankind in that year. There are (4) ____ in the fields of physics, chemistry, medicine and literature. The most prestigious award, however, is the Nobel Peace Prize. This is given to the person who has done the most to promote world peace. One of the most (5) ____ persons to have received the award was Mahatma Gandhi of India

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U.S. population could increase from 323 million in 2016 to as high as 447 million by 2060—or fall as low as 320 million. It depends on how many immigrants are admitted over the next four decades, according to new report from the Census Bureau. According to the report, if current levels of immigration are maintained, the U.S. population will grow to 404 million by 2060. If immigration is cut in half, the population will rise to 376 million. If immigration increases by 50 percent, the population expands to 447 million. And if all immigration were to be halted now, the U.S. population would peak at around 332 million in 2035 and drop to 320 million in 2060. In the high-immigration scenario, the proportion of foreign-born residents would rise by 2060 to 21.6 percent of the population. If immigration is halted, the forecast shows only 4.6 percent of the population in 2060 being foreign-born. In all of the scenarios, the median age of the U.S. population rises from 37.9 to more than 40. The report projects that the number of people identifying as “white alone”—that is, respondents who check only the white ethnicity box on census forms—will continue to rise in the main, high, and low immigration scenarios. This increase results from the Census Bureau’s expectation that the children of Hispanic immigrants will probably, like the children of Italian, Polish, Greek, and other earlier immigrant groups, choose to identify increasingly as white. But the share of the population in the white alone category will decline in each scenario, due to faster increases in the numbers of Americans in the other racial and ethnic groups. America is an ideal, not a tribe  
4. The word “median” in paragraph 2 is closest in meaning to ______

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Do you think computer games are just for kids? Then you should think again. You might be surprised to learn that the game industry now (1)_________ more money than Hollywood. From 2009 to 2012, the U.S. video game industry increased in size by more than 9 percent - four times the growth rate of the U.S. economy during the same period. (2)___________a family buys a new PC , all they really want to do is to play games. It is hardly surprising that video gaming has become one of the most popular (3)___________of entertainment today. One study even showed that some mental disorder patients who play games requiring physical interaction while standing on a balance board displayed improvement afterwards. A good game is like a good film; it will hold your (4)__________, capture your imagination and play with your emotions. The big (5)__________ , however, is that watching a movie is a passive task, you have to say in how the plot develops or which characters dominate the story. With computer games, you direct the action and that is what makes them so exciting

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For many years, scientists have speculated that the cataclysmic impact of an asteroid with the earth was responsible for the demise of the dinosaurs approximately 65 million years ago. Previous discoveries and results have hinted that an asteroid two kilometers in diameter struck the Yucatan peninsula in Eastern Mexico. This impact, stronger than one thousand nuclear explosions, is speculated to have cast a cloud of dust and debris into the atmosphere, covering the entire surface of the earth and blocking out the sun and consequently lowering the surface temperature of the earth. With such a radical change in the earth's environment, scientists believe that over 99% of all animal and plant species were eradicated. Only after millions of years did plants and animals even begin to recover and develop into forms that were better adapted to survive changes in their environment. But, the reign of the dinosaurs had ended and the age of mammals had begun. The crucial link that has held this theory together has been the element iridium. Iridium is not commonly found on either the surface of the earth or inside the crust. It is more commonly found in asteroids or meteorites throughout the solar system. Scientists have hypothesized that after the asteroid impacted the Earth, an even layer of iridium sediment settled over the globe and eventually became part of its surface. The theory, of course, has depended on the discovery of such an existing layer of iridium. Unfortunately, scientists have never been able to offer absolute proof that this asteroid impact ever occurred. Recently, however, a discovery may go a long way toward validating these scientists 'theories. In 1996, a team of marine biologists excavated samples of rock from the Atlantic Ocean just off the cost of Bermuda. Found thousands of meters below the sea, these samples contain iridium similar to those found in the Yucatan peninsula thousands of kilometers away. At first, scientists were skeptical whether the samples were from the same time period. But since carbon dating placed them to 65 million years ago, their doubts were quickly alleviated. Since then many of the other theories for the demise of the dinosaur have been finally laid to rest.
9. According to the passage, the iridium found beneath the ocean floor near Bermuda: 

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Our eyes are the window to our soul, so the saying goes, but they’re also a window into our health. Picking up eye problems early can significantly (1) ____ the chance of sight loss.  Several programs are looking at how to combine existing medical knowledge about our eyes with AI (Artificial Intelligence) tools.  Google DeepMind has teamed up with Moorfields Eye Hospital in London to work on (2) ____ two major conditions that cause sight loss: diabetic retinopathy and age-related macular (3) ____ (AMD). Together, these eye diseases affect more than 625,000 people in the UK and over 100 million people worldwide.  Algorithms have been trained using thousands of eye scans, then set to work detecting potential issues, allowing doctors (4) ____ the right course of action in a fraction of the time it would normally take and with a greater degree of certainty. DeepMind says that 300,000 UK patients a year could be helped (5) ____ the system is given the go ahead for general use following the completion of clinical trials

Each sentence has a mistake. Findit by chosing A B C or D

Some of the tunnels in the cliff are totally natural; some others were carved out by soldiers for defensible purposes.