Read the following passage and choose the best answer (A, B, C, D):
Continuing education is required for workers to stay current with the latest developments, skills, and new technologies required for their fields. Certain professions also require continuing education to comply with laws, remain licensed or certified, or maintain membership in an association or licensing body. Many careers require continuing education. For example, teachers, real estate agents, and engineers are required to have a base of education and then receive updated education as they continue to work in their fields. Nursing, pharmacy, accounting, and criminal justice are additional fields in which professionals must continue to develop the skills necessary for ever-changing environments. For nurses, there are typically two types of continuing education. The first is required for them to remain licensed in their states. The second type of continuing education allows them to get more advanced degrees and qualify for higher-level nursing positions. In the fastpaced pharmacy field, continuing education is important for career growth and licensure. Pharmacists need continuing education to renew their state licenses. Continuing education focuses on subject areas in health care, including pharmacology, patient counseling, regulatory issues, and other topics that contribute to professional pharmacy practice.  Certified public accountants (CPAs) must meet continuing education requirements established by the State Board of Accountancy of the states where their CPA licenses are held. The requirements vary from state to state. The American Institute of CPAs (AICPA) also requires certain continuing education for CPAs to maintain membership. Meanwhile, criminal justice professionals need to stay up-to-date on the new laws, procedures, and technologies to reinforce the knowledge they have already gained. Criminal justice and legal fields include a variety of jobs, such as probation and parole officers, summary court officials, emergency management personnel, and crime scene technicians. Many of these careers require an undergraduate degree for entry, and then professionals must complete continuing education courses as they progress in their careers. Crime scene investigators and evidence technicians must maintain certifications specific to the collection, processing, and maintenance of evidence. Traffic crash reconstructionists must maintain accredited certifications. Emergency management professionals must complete and maintain certifications for their respective states and the Federal Emergency Management Agency (FEMA). Howard concluded “Today’s professionals must, therefore, commit to a ‘life-long learning’ philosophy that enhances effectiveness, diagnose and more quickly solves problems, while moving away from the traditional autocratic management styles.” Whether it is required or not, continuing education can be important for career satisfaction.  
7. The word “autocratic” in paragraph 4 is closest in meaning to _______

Read the following passage and choose the best answer (A, B, C, D):
New data from Akamai, an internet delivery and cloud services company, has exposed that the video game industry remains a growing threat vector for security breaches. Hackers have targeted 12 billion credential stuffing attacks against game websites within a 17-month period The rise and success of credential stuffing attacks is a result of people continuing to reuse the same passwords across multiple accounts. Google identified that 59% of online users reuse passwords. When a data breach happens, user credentials are exposed and can subsequently be found on the internet and the dark web. Cybercriminals use a bot with a list of exposed credentials against a website to gain access to an account on that site. The reason that gaming is subject to so many breaches is twofold; No. 1, most video game companies use low-friction authentication measures because increasing friction drives customer attrition and results in a loss of revenue. The second issue is that from a consumer perspective, gaming is seen as having a low financial risk and, as a result, gamers tend to use less secure passwords. Adding to these challenges is the fact that game developers are pressured to deliver more products at a faster pace, meaning there are more bugs and security issues for cybercriminals to exploit. This has created a perfect storm in the video game industry upon which hackers are all too eager to capitalize.   A significant number of gamers are young — elementary, middle, and high schoolaged — who are less security-conscious and more trusting of people they meet online. To them, privacy is a learned behavior leaving them open to exploitation. They may need to be taught best practices to safeguard their accounts and understand the risks of using weak passwords linked to the games they play. Providing a seamless online experience is paramount in the digital age and, as a result, many organizations balk at implementing robust security procedures for fear of alienating customers. The challenge for the video game industry is to find a balance between increased security without frustrating its players. One notable exception is Microsoft, which has deployed vigorous security measures with Xbox in line with the rest of its business. Without a fundamental change in approach from both gamers and the industry overall, the escalation of this problem shows no signs of slowing down.  
4. According to paragraph 3, what is the first cause for data leakage?

What is 'extreme' weather? Why are people talking about it these days? 'Extreme' weather is an unusual weather event such as rainfall, a drought or a heat wave in the wrong place or at the wrong time. In theory, they are very rare. But these days, our TV screens are constantly showing such  extreme weather events. Take just three news stories from 2010: 28 centimetres of rain fell on Riode Janeiro in 24 hours, Nashville, USA, had 33 centimetres of rain in two days and there was record  rainfall in Pakistan.

The effects of this kind of rainfall are dramatic and lethal. In Rio de Janeiro, landslides followed,  burying hundreds of people. In Pakistan, the floods affected 20 million people. Meanwhile, other parts of the world suffer devastating droughts. Australia, Russia and East Africa have been hit in the last ten years. And then there are unexpected heat waves, such as in 2003 in Europe. That summer, 35,000 deaths were said to be heat-related.

So, what is happening to our weather? Are these extreme events part of a natural cycle? Or are they caused by human activity and its effects on the Earth's climate? Peter Miller says it's probably a mixture of both of these things. On the one hand, the most important influences on weather events are natural cycles in the climate. Two of the most famous weather cycles, El Niño and La Niña, originate in the Pacific Ocean. The heat from the warm ocean rises high into the atmosphere and affects weather all around the world. On the other hand, the temperature of the Earth's oceans is slowly but steadily going up. And this is a result of human activity. We are producing greenhouse gases that trap heat in the Earth's atmosphere. This heat warms up the atmosphere, land and oceans.   Warmer oceans produce more water vapour - think of heating a pan of water in your kitchen. Turn up the heat, it produces steam more quickly. Satellite data tells US that the water vapour in the atmosphere has gone up by four percent in 25 years. This warm, wet air turns into the rain, storms, hurricanes and typhoons that we are increasingly experiencing. Climate scientist, Michael Oppenheimer, says that we need to face the reality of climate change. And we also need to act now to save lives and money in the future.

(Source: © 2015 National Geographic Learning, www.ngllife.com/wild-weather)

It is stated in the passage that extreme weather is________.

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:
(Line 1) Horace Pippin, as an African-American soldier during World War I, was wounded in his right arm. He discovered, however, that by keeping his right wrist steady with his left hand, he could paint and draw. Pippin was not trained, but his artistic sensitivity and intuitive feel for two- dimensional design and the arrangement of colour and patterns made him one of the finest Primitive artists America has produced.
(Line 6) Pippin did a series of paintings on the abolitionist John Brown and one on his war experiences, but he shied away from social issues for the most part and achieved his greatest success with scenes of the people and places of his hometown of West Chester, Pennsylvania. His Domino Players, featuring four women gathered around a wooden table in a simple kitchen setting, is an excellent example of his rural domestic scenes.

According to the passage, which of the following is NOT true about primitive art?

Read the following passage and choose the best answer (A, B, C, D):
While family relationships can bring support, joy, and other wonderful benefits into  our lives, these relationships can also bring stress, particularly when there’s unresolved conflict. Because it’s more difficult to let go of conflicted relationships with family than it would be if these relationships were mere friendships, unresolved conflicts with family members can be particularly painful.  We have certain expectations of trust and closeness toward family members, and it can be more than merely disappointing to realize that this may not be possible with all family members. Unresolved family conflicts bring additional stress at family gatherings in particular. Past unresolved conflicts can become the elephant in the room, felt by everyone, but not directly addressed in the situation. This can be stressful for everyone before and during the family gatherings, sometimes leaving a lasting sense of stress afterward as well. Without a heartfelt discussion, an apology or another form of resolution, the trust on both sides is compromised, and may not know what to expect from this person in the future. For example, that one time your mother-in-law criticized your cooking may come up in your mind every time she comes for a visit, and others may sense your tension. This leads many people to assume the worst when they interpret each other’s behavior in the present and future interactions rather than giving the benefit of the doubt as most of us do with people we trust. Also, references or reminders of past conflicts can sting and create new pain.  Once a conflict has gone on a while, even if both parties move on and remain polite, the feelings of pain and mistrust are usually lingering under the surface, and are difficult to resolve: bringing up old hurts in an effort to resolve them can often backfire, as the other party may feel attacked; avoiding the issue altogether but holding onto resentment can poison feelings in the present.  So what do you do at a family gathering when there’s someone there with whom you’ve had an unresolved conflict? Just be polite. Contrary to how many people feel, a family gathering is not the time to rehash old conflicts, as such conversations often get messy before they get resolved — if they get resolved. Again, be polite, redirect conversations that get into areas that may cause conflict, and try to avoid the person as much as you politely can. 
4. The word “compromised” in paragraph 3 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:
We have all heard the expression, “you can’t judge a book by its cover.” However, it seems that is exactly what most people do. The human brain seems to be wired in such a way that we make very strong, lasting judgments about the people we meet within the first 30 seconds. And it is true, you may be able learn a lot about a person by their first impression. But can you really learn all you need to know?
May be there is something affecting your first impression. Possibly the person is nervous or upset. Maybe you are in a bad mood or not feeling well. All of these factors and more could influence a first impression, so should people place so much weight on it?
Many people feel that a first impression is extremely important. Once those people form an idea of you, it is often difficult for them to get beyond it. If someone feels that you are something you really aren’t because of your first impression, then that is obviously not a good thing.
Yet many people really do still rely deeply on first impressions. One good example is the job interview. We dress nicely for job interviews for a very good reason: to make a good first impression. In addition to our outward appearance, many people tend to put on something of an act. By being extremely polite and showing interest, we feel that we will make a good first impression and have a better chance getting the job.
Is this the way things should be? Probably not. Will this situation ever change? The answer to that question is the same - probably not. It is just human nature to rely on a first impression. Everyone knows that they do it and most people know that it's not the right thing to do.AQ

The author thinks that people will continue to rely on first impressions because     .

Read the following passage and choose the best answer (A, B, C, D):
Paul Watson is an environmental activist. He is a man who believes that he must do something, not just talk about doing something. Paul believes in protecting endangered animals, and he protects them in controversial ways. Some people think that Watson is a hero and admire him very much. Other people think that he is a criminal. On July 16th, 1979, Paul Watson and his crew were on his ship, which is called the Sea Shepherd. Watson and the people who work on the Sea Shepherd were hunting on the Atlantic Ocean near Portugal. However, they had a strange prey, instead of hunting for animals, their prey was a ship, the Sierra. The Sea Shepherd found the Sierra, ran into it and sank it. As a result, the Sierra never returned to the sea. The Sea Shepherd, on the other hand, returned to its home in Canada. Paul Watson and his worked thought that they had been successful. The Sierra had been a whaling ship, which had operated illegally. The captain and the crew of the Sierra did not obey any of the international laws that restrict whaling. Instead, they killed as many whales as they could, quickly cut off the meat, and froze it. Later, they sold the whale meat in countries where it is eaten. Paul Watson tried to persuade the international whaling commission to stop the Sierra. However, the commission did very little, and Paul became impatient. He decided to stop the Sierra and whaling ships in any way that he could. He offered to pay $25,000 to an one who sank any illegal whaling ship, and he sank the Sierra. He acted because he believed that the whales must be protected. Still, he acted without the approval of the government; therefore, his action controversial. Paul Watson is not the only environmental activist. Other men and women are also fighting to protect the Earth. Like Paul Watson, they do not always have the approval of their governments, and like Watson, they have become impatient. Yet, because of their concern for the environment, they will act to protect it.
4. The main idea of paragraph one is that:

Read the following passage and choose the best answer (A, B, C, D):
Green-space facilities are contributing to an important extent to the quality of the urban environment. Fortunately it is no longer necessary that every lecture or every book about this subject has to start with the proof of this idea. At present, it is generally accepted, although more as a self-evident statement than on the base of a closely-reasoned scientific proof. The recognition of the importance of green-spaces in the urban environment is a first step on the right way; this does not mean, however, that sufficient details are known about the functions of green-space in towns and about the way in which the inhabitants are using these spaces. As to this rather complex subject I shall, within the scope of this lecture, enter into one aspect only, namely the recreative function of green-space facilities. The theoretical separation of living, working, traffic and recreation which for many years has been used in town-and-country planning, has in my opinion resulted in disproportionate attention for forms of recreation far from home, whereas there was relatively little attention for improvement of recreative possibilities in the direct neighbourhood of the home. We have come to the conclusion that this is not right, because an important part of the time which we do not pass in sleeping or working, is used for activities as possible, and the design of these has to be such that more obligatory activities can also have a recreative aspect. The very best standard of living is nothing if it is not possible to take a pleasant walk in the district, if the children cannot be allowed to play in the streets, because the risks of traffic are too great, if during shopping you can nowhere find a spot for enjoying for a moment the nice weather, in short, if you only feel yourself at home after the street-door of you house is closed after you.  
3. The theoretical separation of living, working, traffic and recreation has led to ________.

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At a time when the younger generation, hooked to the mobiles, TV and internet, is fast-moving away from books, Sundargarh Collector Nikhil Pasan Kalyan has taken it upon himself this particular sacred responsibility. Kalyan on Thursday launched a campaign ‘Sundargarh Bahi Padha’ to promote reading by distributing books among the people in Sundargarh town. He reached out to the people at roadside stalls and engaged with them over cups of tea. While motivating them to read, he gifted books to them. The district administration plans to extend the initiative to schools and villages in the coming six months with focus on improving school and public libraries, and equipping all offices and waiting rooms with books. Further, reading sessions have been scheduled to be conducted every week at the Collector’s residence campus and other places involving people of all ages including students. “Books are the best teachers. To improve morality and openness in the society, everyone has to read. They could be in any genre. Reading is the starting point,” said Kalyan. Chief District Medical and Public Health Officer (CDM-PHO) Dr SK Mishra commented on the present situation: “Youths and students confine themselves to prescribed courses of study and refuse to go beyond that,” he said. Undoubtedly, internet connection and electronic gadgets like computers, laptops and mobile phones provide a sea of information and ready-made knowledge but simultaneously decrease the creativity in individuals, Mishra added. “Social media kills time, creativity and the urge to pick up a book. It may be noted that people with reading habits have lesser chances of suffering from Alzheimer’s,” he said. Presently, of the four Government-run public libraries in the district three are functional, albeit with few readers. Kalyan has sought collective participation to make the initiative a success  
1. What is the main topic of the passage?

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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  
4. In the past it was expected that first-job hunters would ____

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:
These days, most people in Britain and the US do not wear very formal clothes. But sometimes it is important to wear the right thing.
Many British people don't think about clothes very much. They just like to be comfortable. When they go out to enjoy themselves, they can wear almost anything. At theatres, cinemas and concerts you can put on what you like from elegant suits and dresses to jeans and sweaters. Anything goes, as long as you look clean and tidy.

But in Britain, as well as in the US, men in offices usually wear suits and ties, and women wear dresses or skirts (not trousers). Doctors, lawyers and business people wear quite formal clothes. And in some hotels and restaurants men have to wear ties and women wear smart dresses.
In many years, Americans are more relaxed than British people, but they are more careful with their clothes. At home, or on holiday, most Americans wear informal or sporty clothes. But when they go out in the evening, they like to look elegant. In good hotels and restaurants, men have to wear jackets and ties, and women wear pretty clothes and smart hairstyles.
It is difficult to say exactly what people wear informal or formal in Britain and the US, because everyone is different. If you are not sure what to wear, watch what other people do and then do the same. You'll feel more relaxed if you don't look too different from everyone else.

The word “elegant” is closest in meaning to     .

Read the following passage and choose the best answer (A, B, C, D):
Vocational training in the UK is intended to give people the skills and knowledge they  need to perform a particular job, and involves practical instruction as well as theory. Most vocational training takes place not in universities but in colleges of further education and in colleges specializing in art, accountancy, etc. some secondary schools now also offer an introduction to vocational training.  NVQs (National Vocational Qualifications) are qualifications that can be obtained by people already working in a particular industry. Colleges of further education run courses to provide a theoretical background. NVQs are awarded on the basis of practical work, spoken and written test, and coursework. There are five levels, from Foundation to Management. Since 1992 many students in schools and colleges have been working for GNVQs (General National Vocational Qualifications), as an alternative to GCSEs and A levels. GNVQs cover similar areas to NVQs and are intended as introductions to a particular field of work and the skills required. Students can choose from over 500 subjects. At the lowest of its three levels foundation, a GNVQ is equivalent to a GCSE and from 2002 they are being replaced by new vocational GCSEs.  In the US there are no national qualifications like NVQs, though some professional organizations decide on their own qualifications and some of these have become widely accepted. Much vocational training is done by private institutions which are sometimes called proprietary schools. Although many of these are good, in general they have a bad reputation. This is partly because there are no controls over who can operate such a school. Some proprietary schools try to get as many students as possible, including some who will probably not be able to complete their training.  Most US secondary schools programs do not provide a choice between an academic and a practical track (a program of study), but most do give students an opportunity to take some practical or vocational classes. Large school districts may have magnet schools, schools that attract students with certain interests, and some of these may have a large choice of vocational courses.  
5.  It can be inferred from the reading about the vocational training in the US that _______

Read the passage below and choose one correct answer for each question.

Movements and gestures by the hands, arms, legs, and other parts of the body and face are the most pervasive types of nonverbal messages and the most difficult to control. It is estimated that there are over 200.000 physical signs capable of stimulating meaning in another person. For example, there are 23 distinct eyebrow movements, each capable of stimulating a different meaning. Humans express attitudes toward themselves and vividly through body movements and postures. Body movements express true messages about feelings that cannot be masked. Because such avenues of communication are visual, they travel much farther than spoken words and are unaffected by the presence of noise that interrupt, or cancels out speech. People communicate by the way they walk, stand, and sit. We tend to be more relaxed with friends or when addressing those of lower status. Body orientation also indicates status or liking of the other individual. More direct orientation is related to a more positive attitude. Body movements and postures alone have no exact meaning, but they can greatly support or reject the spoken word. If these two means of communication are dichotomized and contradict each other, some result will be a disordered image and most often the nonverbal will dominate.

Nonverbal communication ________.

Read the following passage and choose the best answer (A, B, C, D):
In 1860 the United States was predominantly rural. Most people were engaged in  agriculture, and about 80 percent of the population actually resided on farms or in small villages. Only 20 percent lived in towns and cities of 2,500 or more, the census definition of an urban area after 1880. New York alone in 1860 had more than 1 million people, and only 8 cities could boast about a population of more than 100,000. Thereafter the transition from a rural to a predominantly urban nation was especially remarkable because of its speed. By 1900, urbanization, with all of its benefits, problems, and prospects for a fuller life, became the mark of modern America The changing physical landscape reflected the shift to an urbanized society. Railroad terminals, factories, skyscrapers, apartment houses, streetcars, electric engines, department stores, and the increased pace of life were all signs of an emerging urban America. Indeed, the vitality, dynamic quality, variety, and restless experimentalism in society centered in the urban communities where the only constant factor was change itself.  Urbanization did not proceed uniformly throughout the nation. New England and the Middle Atlantic states contained the highest percentage of city dwellers. In the Middle West, the growth of cities such as Chicago, Milwaukee, Cleveland, and St. Louis showed the importance of urbanization in that region. The three West Coast states also experienced rapid urban growth. In the South, urbanization developed much more slowly, although by 1910 the expansion of transportation, commerce, and industry had greatly increased the population of older cities such as New Orleans and stimulated the growth of new urban centers such as Birmingham. However, the South remained predominantly rural. Only somewhat more than 20 percent of the population in that region was urban by 1910.  In some regions the urban impact had a depressing effect upon the surrounding rural communities. Much of New England in the late nineteenth century presented a discouraging picture of abandoned farms and sickly villages as people forsook the countryside and rushed to the larger towns and cities. In the Middle West, particularly Ohio and Illinois, hundreds of townships lost population in the 1880’s.
8. Which of the following does the passage support?

Choose the best answer:
……… a large number of the country's craft villages are suffering from a shortage of human resources and difficulties in building brand recognition, many international organizations have had projects to help them.

Read the following passage and choose the best answer (A, B, C, D):
If you want to volunteer to help boost your career, think carefully about the skills and  experience you need. Don’t be afraid to be upfront about this when you apply (1)_________ opportunities – as long as you are willing to show commitment to your voluntary work, most organizations will welcome the fact that it could have benefits for you. Volunteering can give you a broad (2) ________ of learning opportunities:  • Many volunteer placements will allow you to study and develop your “key skills”, (3) _________ skills you need to get on in the workplace, in learning and in life.  • Some volunteers receive vocational training in (4) _________ areas such as social care, working with the elderly, or working with children.  • Some roles require specific training such as volunteering as a special constable with your local police force.  The organization you work for usually covers your training costs and expenses in (5) ________ for your time and commitment

Read the following passage and choose the best answer (A, B, C, D):
The White House, the official home of the United State President, was not built in time for George Washington to live in it. It was begun in 1792 and was ready for its inhabitants, President and Mrs. John Adams, who moved in on November 1, 1800. When the Adams moved in, the White House was not yet complete, and the Adams suffered many inconveniences; for example, the main staircase was incomplete, which hindered movement from floor to floor, and the future laundry yard was merely a pool of mud, so wet laundry was hung in the unfinished East Room to dry. Thomas Jefferson, the third president, improved the comfort of the White House in many respects and added new architectural features such as the terraces on the east and west ends. When the British forces burned the White House on August 24, 1818, President Madison was forced to leave. All the remained after the fire was the exterior walls, the interior was completely destroyed. It was not until December of 1817 that the following president, James Monroe was able to move into a rebuilt residence. Since then, the White House has continued to be modified but has been continuously occupied by each succeeding US president.
7. The word "forces" in paragraph 2 could best be replaced by .

Choose the best answer:
The students _______to be at school at 8 am

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):
Certain birds are, more often than not, considered bad luck, or even a sign of impending death. For example, all over the world, both crows and ravens have some connection to war, and death. In early times, crows and ravens were thought to accompany the gods of war, or be signs of the gods’ approaching arrival. This idea later changed. Crows in particular were thought to be harbingers of ill fortune or, in some cases, guides to the afterlife. Woe be it to the person who saw a single crow or raven flying overhead, for this was most certainly a portent of death in the near future. Interestingly, though potentially bad luck for people individually, the raven is considered to be good luck for the crown of England. So much so, in fact, that a “raven master” is, even today, an actual government position in London. He takes care of the ravens there and also clips their wings, ensuring that these birds can never fly far from the seat of the British government. This way, the kingdom will never fall to ill fortune. Another bird that is thought to play a part in forecasting the fortunes of people is the swallow. Depending on how and when it is seen, the swallow can be a harbinger of either good or ill fortune. Perhaps inspired by the swallow’s red-brown breast, Christian people initially related the swallow to the death of Jesus Christ. Thus, people who saw a swallow fly through their house considered it a portent of death. Later, however, farmers began to consider swallows signs of good fortune. Any barn that has swallows living in it is sure to be blessed in the following year. Farmers also have to beware of killing a swallow; that would be certain to end any good luck they might have had. Though many people think these superstitions are old wives’ tales, there is actually some evidence to support them. For example, crows and ravens, being scavengers, appear at the aftermath of battles. Thus, large numbers of crows and ravens could be good indications of war in an area. As well, swallows feed on insects that can cause infections in cattle. Thus, a farmer who has many swallows in his barn may actually have healthier animals on his farm. Therefore, the next time you feel inclined to laugh at an old wives’ tale, maybe you had better find out if there is any truth to it first!
6. The word “aftermath” in the last paragraph could be best replaced by ____________

Choose the best answer:
Mai and Hung were ill, so …went to school today.