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Dr. Daniel Quon has been an oral surgeon in Jackson for over 30 years. “Growing up  in the family business, I knew that in order for you to gain something, you have to give back,” Quon said. “And being in the field of dentistry, we have a special gift that we can help people and I thought that was an appropriate way to help out.”  Quon volunteers his dental services at the Jackson Free Health Clinic to patients who can’t afford it. Through the Mississippi Dental Association, Quon also provides free dental care for the Mission Service of Mercy program. Dental Assistant Carley Welch has been a part of this experience. “We actually did that last year together and we plan on doing that again this year together,” he said. “Best boss you can ask for,” Welch continued. “Very patient, always willing to teach you; even things that most people wouldn’t go very far to teach you, he will. Just so you have the experience.” But Quon serves in other ways too. “Wife and I volunteer at the Stewpot. We serve lunch on Saturdays when we can. I was actually on the board of Stewpot for 3 years until this passed year.” And he donates blood platelet at the Mississippi Blood services. “I’m almost up to 18 gallons right now in donations. That’s a lot of blood! still got a little bit left though.” “It takes very little time to volunteer. It’s a great thing where you can help someone who needs an extra hand or helping hand.” “I think he does his part to contribute as much as possible,” Welch added. “Whether it’s helping dental wise or even just in general with the public.” 
1. Which best serves as the title for the passage?

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The Thang Long Imperial Citadel was the ………. of political power for nearly seven centuries without interruption.

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 are three valid arguments to support the preservation of endangered species. An aesthetic justification contends that biodiversity contributes to the quality of life because many of the endangered plants and animals are particularly appreciated for their unique physical beauty. The aesthetic role of nature in all its diverse forms is reflected in the art and literature of every culture, attaining symbolic status in the spiritual life of many groups. According to the proponents of the aesthetic argument, people need nature in all its diverse and beautiful forms as part of the experience of the world.
Another argument that has been put forward, especially by groups in the medical and pharmacological fields, is that of ecological self-interest. By preserving all species, we retain a balance of nature that is ultimately beneficial to humankind. Recent research on global ecosystems has been cited as evidence that every species contributes important or even essential functions that may be necessary to the survival of our own species. Some advocates of the ecological argument contend that important chemical compounds derived from rare plants may contain the key to a cure for one of the diseases currently threatening human beings. If we do not protect other species, then they cannot protect us.
Apart from human advantage in both the aesthetic and ecological arguments, the proponents of a moral justification contend that all species have the right to exist, a viewpoint stated in the United Nations World Charter for nature, created in 1982. Furthermore, if humankind views itself as the stewards of all the creatures on Earth, then it is incumbent upon human beings to protect them, and to ensure the continued existence of all species. Moral justification has been extended by a movement called “deep ecology,” the members of which rank the biosphere higher than people because the continuation of life depends on this larger perspective. To carry their argument to its logical conclusion, all choices must be made for the biosphere, not for people.

The word “them” in paragraph 3 refers to     .

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"We'll give four million glasses of milk to thousands of disadvantaged children this year,” a dairy giant in Ha Noi said.

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OPEC was established at a conference held in Baghdad Sept. 10–14, 1960, and was  formally constituted in January 1961 by five countries: Saudi Arabia, Iran, Iraq, Kuwait, and Venezuela. Members admitted afterward include Qatar (1961), Indonesia and Libya (1962), Abū Ẓabī (1967), Algeria (1969), Nigeria (1971), Ecuador (1973), and Angola (2007). The United Arab Emirates assumed Abū Ẓabī’s membership in the 1970s. Gabon, which had joined in 1975, withdrew in January 1995, but it had relatively insignificant oil reserves. Ecuador suspended its membership from OPEC from December 1992 until October 2007, while Indonesia suspended its membership beginning in January 2009.  OPEC’s headquarters, first located in Geneva, was moved to Vienna in 1965. OPEC members coordinate policies on oil prices, production, and related matters at semiannual and special meetings of the OPEC Conference. The Board of Governors, which is responsible for managing the organization, convening the Conference, and drawing up the annual budget, contains representatives appointed by each member country; its chair is elected to a one-year term by the Conference. OPEC also possesses a Secretariat, headed by a secretary – general appointed by the Conference for a three-year term; the Secretariat includes research and energy-studies divisions.  OPEC members collectively own about two-thirds of the world’s proven petroleum reserves and account for two-fifths of world oil production. Members differ in a variety of ways, including the size of oil reserves, geography, religion, and economic and political interests. Four members – Kuwait, Qatar, Saudi Arabia, and the United Arab Emirates – have very large per capita oil reserves; they also are relatively strong financially and thus have considerable flexibility in adjusting their production. Saudi Arabia, which has the largest reserves and a relatively small (but fast-growing) population, has traditionally played a dominant role in determining overall production and prices Because OPEC has been beset by numerous conflicts throughout its history, some experts have concluded that it is not a cartel – or at least not an effective one – and that it has little, if any, influence over the amount of oil produced or its price. Other experts believe that OPEC is an effective cartel, though it has not been equally effective at all times. The debate largely centers on semantics and the definition of what constitutes a cartel. Those who argue that OPEC is not a cartel emphasize the sovereignty of each member country, the inherent problems of coordinating price and production policies, and the tendency of countries to renege on prior agreements at ministerial meetings. Those who claim that OPEC is a cartel argue that production costs in the Persian Gulf are generally less than 10 percent of the price charged and that prices would decline toward those costs in the absence of coordination by OPEC.  The influence of individual OPEC members on the organization and on the oil market usually depends on their levels of reserves and production. Saudi Arabia, which controls about one-third of OPEC’s total oil reserves, plays a leading role in the organization. Other important members are Iran, Iraq, Kuwait, and the United Arab Emirates, whose combined reserves are significantly greater than those of Saudi Arabia. Kuwait, which has a very small population, has shown a willingness to cut production relative to the size of its reserves, whereas Iran and Iraq, both with large and growing populations, have generally produced at high levels relative to reserves. Revolutions and wars have impaired the ability of some OPEC members to maintain high levels of production. 
2. According to paragraph 1, what are founding members of OPEC?

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The year was 1810, the place was southern Germany, Bavaria, and life was hard. It was the month of October and all of the countryside had been working day and night to finish their fall harvest and prepare for the onset of winter. While the plow horses were working and the farmers’ days were filled from sun up to sun down, there were some other preparations being made as well. Prince Ludwig I and his entire court were preparing for his upcoming marriage to Princess Therese of Sachsen-Hildurghausen. The grand wedding was to take place on the 12th, right in the middle of the harvest. As you know any wedding can be difficult to plan, but when you’re a prince it can be even more stressful. The invitations had gone out, the garments had been made and the location had been selected. The big event was to be held in a magnificent “Weise” (meadow) just outside the gates of Munich. As the big day approached, the countryside and town, in fact all of Bavaria was a buzz with talk of the big day. Everyone was planning on attending as they were all exhausted from the harvest and it was really the last chance before the long, cold days of winter to get out and blow off some steam. On the 12th, the ceremony went off without a hitch. The weather was perfect, the bride looked beautiful and about 40,000 guests were in attendance. The reception, as you can imagine, was one of the biggest parties history had ever seen with copious amounts of beer and massive quantities of food being devoured. It was a reception fit for a prince. And this prince was absolutely ecstatic. Ludwig I was so taken with all of his guests that he planned a special treat for them. The prince knew that all of his subjects were huge fans of horseracing so he planned to conclude the event with a somewhat impromptu horse race across the great meadow. When the townspeople heard of this they erupted in a jubilant cry Zicke Zacka, Zicke Zacka, Hoy, Hoy, Hoy. This is still chanted in the beer tents of today’s Oktoberfest celebrations. It was then and there that they decided unanimously to rename the wiese Theresiewiese (Therese Meadow) in honor of the Prince’s new bride. This was their humble way of welcoming her to town. To this day that very meadow still bears her name. After a spectacular day and night — and probably more than a couple of hangovers — the great event came to an end. It was the following fall as the townspeople began to reminisce about the great time they had had the previous year (as do many of our Oktoberfest guests tend to do around the fall) that they decided to honor their prince and celebrate his wedding anniversary in much the same way. King Maximillian agreed, but this party was to be even bigger, better and longer than the first. The event became an annual celebration. And that my friends is how the Oktoberfest tradition began and continues today. As a side note, the beer that was poured all those years ago and that has been continually served at every Oktoberfest in Munich since will now be served at the Big Bear Lake Oktoberfest. The very same beer flowing from the taps in Munich, Germany will be the beer flowing from our taps in humble Big Bear Lake. And like the beer, our Burgermeister just happens to be a true German original as well. 
2. The word “entire” in paragraph 1 is closest in meaning to ______

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The aviation industry, especially the commercial aviation sector, is constantly striving to improve both the way it works and its customer satisfaction. It has begun using artificial intelligence. Though AI in the aviation industry is still in the nascent stage, some progress has been made already as certain leading carriers invest in AI. To make a long story short, AI can redefine how the aviation industry goes about its work. In 2017, American Airlines conducted an app development competition with the goal of having an app developed for making baggage screening easier for passengers. The competition, named HackWars, was themed upon artificial intelligence, drones and augmented and virtual reality. The winner, known as “Team Avatar,” developed an app that would not only allow passengers determine their baggage size before arriving at the airport, but also prepay any potential baggage-related expenses. United Airlines is using Amazon’s Alexa to have certain common customer queries answered. In September 2017, United announced a collaboration with Alexa. The feature is known as the United skill. To get started, all passengers need to do is to  add the United skill to their Alexa app and then start asking questions. Alexa answers common queries correctly, such as the status of a flight by number, check-in requests and availability of Wi-Fi on a flight. The reviews so far have been mixed, which points to the fact that there is a learning curve, and it is still a long way to go before AI can fully handle customer assistance. Tracking progress is an enormous challenge that airlines will face. The first thing they need to do is to develop analytics that will help them develop and process accurate data. However, that in itself is a challenge. What kind of analytics will help? For example, customer satisfaction is going to be one of the most important factors in success. What kind of analytics will determine that airlines have been improving on customer satisfaction parameters? AI needs huge investments, and probably the biggest risk in this is smaller, especially budget airlines are going to miss out on reaping the benefits of AI fully. Does that mean that the performance of the smaller carriers will be impacted? That might not be the case, because we might be moving toward more acquisitions and mergers. Bigger airlines will have a massive appetite for acquiring smaller airlines with an eye on the market. It is not all gloom and doom though, because smaller airlines like Southwest have already shown some initiatives toward embracing AI. It is surprising that a sector as important as aviation has woken up to AI so late. As AI in aviation picks up its pace, there could probably be a few mergers, acquisitions or even closure of small airlines which will not be able to afford the investments. Now, AI seems the best option to take aviation to the next level.
4. The word “queries” in paragraph 3 can best be replaced by _____

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The greatest recent social changes have been in the lives of women. During the twentieth century there has been a remarkable shortening of the proportion of a woman’s life spent in caring for children. A woman marrying at the end of the nineteenth century would probably have been in her middle twenties, and would be likely to have seven or eight children, of whom four or five lived till they were five years old. By the time the youngest was fifteen, the mother would have been in her early fifties and would expect to live a further twenty years, during which custom, opportunity and health made it unusual for her to get paid work. Today women marry younger and have fewer children. Usually a woman’s youngest child will be fifteen when she is forty-five and can be expected to live another thirty-five years and is likely to take paid work until retirement at sixty. Even while she has the care of children, her work is lightened by household appliances and convenience food. This important change in women’s life-pattern has only recently begun to have its full effect on women’s economic position. Even a few years ago most girls left school at the first opportunity, and most of them took a full-time job. However, when they married, they usually left work at once and never returned to it. Today the school- leaving age is sixteen, many girls stay at school after that age, and though women tend to marry younger, more married women stay at work at least until shortly before their first child is born. Very many more afterwards return to full-time or part-time work. Such changes have led to a new relationship in marriage, with the husband accepting a greater share of the duties and satisfactions of family life, and with both husband and wife sharing more equally in providing the money, and running the home, according to their abilities and interests of each of them.  
3. What does the word "lightened" in the first paragraph probably means________

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

 When they were first introduced, electronic calculators were less powerful and cost many more than they do today

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

Every second, a hectare of the world rainforest is destroyed. That is equivalent to two football fields

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A conical hat is a well-known handicraft, not only in Viet Nam, _____ all around the world.

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When people marry, they’re usually in love and happy to be tying the (1) ____. But after that, things tend to change. (2) __________ average, couples’ satisfaction with their marriage declines during the first years of marriage and, if the decline is particularly steep, divorce may follow. The course of true love runs downhill. For around 30 years, researchers have studied how having children affects a marriage, and the results are (3) ______: the relationship between spouses suffers once kids come along. Comparing couples with and (4) ______ children, researchers found that the rate of the decline in relationship satisfaction is nearly twice as steep for couples who have children than for childless couples. In the (5) ______ that a pregnancy is unplanned, the parents experience even greater negative impacts on their relationship. The irony is that even as the marital satisfaction of new parents declines, the likelihood of them divorcing also declines. So, having children may make you miserable, but you’ll be miserable together

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The majority of Americans can live comfortable lives on the salaries they earn, without the support of a universal public-welfare system. These so-called middle-class Americans generally own their own homes and cars, spend some time each year on vacation, and can pay – at least in part - for a college education for their children. Most Americans set (1) _______ money in savings accounts to help pay major expenses; many invest in the stock market in hopes of earning a healthy return on their investments.  Most buy insurance, especially life and medical insurance, frequently with contributions (2) _____ the companies for which they work. Many companies also have retirement plans which they and their employees put aside money for their retirement pensions. When added to Social Security payments, pensions (3) _______ many tired Americans to live comfortably. On the other hand, for older Americans who require longterm care outside of a hospital, a nursing home can be very expensive. In 1993, a family of four with a yearly income of $14,763 or less was considered poor by American standards; 15.1 percent of American families fell into this category. In addition to the benefits discussed above, many families below the (4) ________line receive welfare payments, sums of money provided by the government each month to those whose income is too low to obtain such necessities as food, clothing and shelter. The most common form of welfare payment has been through a program called Aid to Families With Dependent Children (AFDC). Originally (5) _______to help children whose fathers had died, AFDC evolved into the main source of regular income for millions of poor American families

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Plastic bags are used by everybody. From a vegetable vendor to a designer store, everyone seems to use them. Even though they are one of the modern conveniences that we seem to be unable to do without, they are responsible for causing pollution, killing wildlife, and using up the precious resources of the Earth. But, most of us are blissfully unaware of the repercussions that are occurring and will take place in the future because of the plastic bags. Every once in a while, the government passes out an order banning store owners from providing plastic bags to customers for carrying their purchases, with little lasting effect. Plastic bags are very popular with both retailers as well as consumers because they are cheap, strong, lightweight, functional, as well as a hygienic means of carrying food as well as other goods. About a hundred billion plastic bags are used every year in the U.S. alone. And then, when one considers the huge economies and populations of India, China, Europe, and other parts of the world, the numbers can be staggering. The problem is further exacerbated by the developed countries shipping off their plastic waste to developing countries like India. Once they are used, most bags go into landfills. Each year, more and more bags are ending up littering the environment. Once they become litter, plastic bags find their way into our waterways, parks, beaches, and streets. And, if they are burned, they infuse the air with toxic fumes. About 100,000 animals, such as dolphins, turtles, whales, penguins are killed every year due to these bags. Many animals ingest plastic bags, mistaking them for food, and therefore, die. And worse, the ingested plastic bag remains intact even after the death and decomposition of the animal. Thus, it lies around in the landscape where another victim may ingest it. One of the worst environmental effects is that they are non-biodegradable. The decomposition takes about 400 years. No one will live so long to witness the decomposition of plastic! Thus, save the environment for the future generations as well as animals. Petroleum products are diminishing and getting more expensive by the day, since we have used this non-renewable resource increasingly. And to make plastic, about 60-100 million barrels of oil are needed every year around the world. Surely, this precious resource should not be wasted on producing plastic bags, should it? Petroleum is vital for our modern way of life. It is necessary for our energy requirements - for our factories, transportation, heating, lighting, and so on. Without viable alternative sources of energy yet on the horizon, if the supply of petroleum were to be turned off, it would lead to practically the entire world grinding to a halt. So, what can be done? A tote bag can make a good substitute for carrying groceries and the shopping. You can keep the bag with the cashier, and then put your purchases into it instead of the usual plastic bag. Recycling the bags you already have is another good idea. These can come into use for various purposes, like holding your garbage, instead of purchasing new ones. While governments may be working out ways to lessen the impact of plastic bags on the environment; however, each of us should shoulder some of the responsibility for this problem, which ultimately harms us. Plastics are not only nonbiodegradable, but are one of the major pollutants of the sea. For a clean and green environment, try to use alternatives to plastic whenever and wherever possible. Cut down your use of plastic, and do your bit to save our planet  
5. The word “intact” in paragraph 3 is closest in meaning to ______________

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Taking piano lessons and solving math puzzles on a computer significantly improve specific math skills of elementary schoolchildren, according to a new study. The results, (1)______ were published in the journal Neurological Research, are the latest in a series that links musical training to the development of higher brain functions. Researchers worked with 135 second-grade students at a school in Los Angeles after (2)______ a pilot study with 102 students. Children that were given four months of piano training as well as time playing (3)______ newly designed computer software scored 27 percent higher on math and fraction tests than other children. Piano instruction is thought to enhance the brain's "hard wiring" for spatial-temporal reasoning, or the ability to visualise and transform objects in space and time, says Professor Gordon Shaw, who led the study. At the same time, the computer game allows children to solve geometric and math puzzles that boost their ability to (4)______ shapes in their mind. The findings are significant (5)______ a grasp of proportional math and fractions is a prerequisite to math at higher levels, and children who do not master these areas of math cannot understand more advanced math that is critical to high-tech fields.

Find mistake:
We not think we'll buy anything but we'll bring some just in case

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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.  
4. The word “surplus” in paragraph 4 is closest in meaning to _______

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

Many people see fad diets as harmless ways of losing weight, and they are grateful to have them. Although permanent weight loss is the (31)_________, few are able to achieve it. Experts estimate that 95 percent of dieters return to their starting weight, or even gain weight. While the reckless use of fad diets can bring some (32)_________results, long-term results are very rare. (33) _________, people who are fed up with the difficulties of changing their eating habits often turn to fad diets. (34)_________being moderate, fad diets involve extreme dietary changes. They advise eating only one type of food, or they prohibit other types of foods entirely. This results in a situation (35)_________a person's body doesn't get all the vitamins and other things that it needs to stay healthy

(33)..................................

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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.
3. The word "hinted" is closest in meaning to: 

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Despite the fact that humans haven’t returned to the Moon since the cancellation of the Apollo program in 1972, there have nonetheless been incredible advances in space exploration in recent years. All across the world, human time is the most valuable commodity – particularly when it comes to solving problems. Far from stealing jobs, the majority of advances in artificial intelligence and machine learning are designed to automate relatively “simple” processes and free up time for humans to do what they do best. Already we have had a taste of what AI can achieve from space, even as far back as the early 2000s with the launch of the Earth Observing-1 (EO-1) satellite, which helps analyse and inform the appropriate response in the event of a disaster, such as hurricanes and volcanic eruptions. In some cases, the systems in place on EO-1 began capturing satellite images of disaster zones before ground personnel were even aware that a disaster had occurred. More recently, AI has been used on the Mars Curiosity rover, where AEGIS software is able to identify intriguing rock or soil patches that should be targeted for analysis. This significantly expedites the process of collecting data from the surface of Mars as the robot isn’t relying solely on human commands. Richard Branson’s Virgin Galactic – which hopes to soon begin conducting commercial flights – charges between $200,000 to $250,000 per ticket for a flight where passengers will experience just several minutes of weightlessness beyond the Karman line where space officially begins. Therefore, previous space missions have always needed to consider very carefully which astronauts they send to space, with the ultimate decision often coming down to an astronaut’s ability to act as a ‘jack-of-all-trade’. In future, it should be possible to automate the computing and engineering tasks that historically astronauts have had to train for. This would mean sending individuals with specialised expertise in science and research in place of the all-rounder astronauts of yesteryear. For success in space exploration in the years to come, we will need to continue along the exponential curve of open source uptake and see advances in the approach to how spacecraft software, hardware and infrastructure is developed and deployed. With this baseline in place, advances in AI-driven scientific research have the potential to propel us forwards.
7. Which of the following statements is TRUE, according to the passage?

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Andrew Jackson Beard lived an extraordinary life for a black American inventor. Unlike the vast majority of inventors who never profit from their patents, he profited from his inventions. Andrew Beard was born a slave on a plantation in Woodland, Alabama, in 1849, shortly before slavery ended. He received emancipation at age 15 and he married at age 16. Andrew Beard was a farmer, carpenter, blacksmith, a railroad worker, a businessman and finally an inventor. He grew apples as a farmer near Birmingham, Alabama for five years before he built and operated a flour mill in Hardwicks, Alabama. His work in agriculture led to tinkering with improvement for plows. In 1881, he patented his first invention, an improvement to the double plow, and sold the patent rights for $4,000 in 1884. His design allowed for the distance between the plow plates to be adjusted. That amount of money would be the equivalent of almost $100,000 today. In 1887, Andrew Beard patented a second plow and sold it for $5,200. This patent was for a design that allowed the pitch of the blades of plows or cultivators to be adjusted. The amount he received would be the equivalent of about $130,000 today. In 1897, Andrew Beard patented an improvement to railroad car couplers. His improvement came to be called the Jenny Coupler. It was one of many that aimed to improve the knuckle coupler patented by Eli Janney in 1873 (patent US138405). The knuckle coupler did the dangerous job of hooking railroad cars together, which formerly was done by manually placing a pin in a link between the two cars. Beard, himself had lost a leg in a car coupling accident. As an ex-railroad worker, Andrew Beard had the right idea that probably saved countless lives and limbs. Beard received three patents for automatic car couplers. These are US594059 granted November 23, 1897, US624901 granted May 16, 1899, and US807430 granted on May 16, 1904. While there were thousands of patents filed at the time for car couplers, Andrew Beard received $50,000 for the patent rights to his Jenny coupler. This would be just shy of 1.5 million dollars today. Congress enacted the Federal Safety Appliance Act at that time to enforce using automatic couplers. Andrew Jackson Beard was inducted into the National
Inventors Hall of Fame in 2006 in recognition of his revolutionary Jenny coupler
5. According to paragraph 3, which is one of the patent years of Beard’s modified couplers?