Read the following passage and choose the best answer (A, B, C, D):
Amid the hum and heat of Berlin’s Reuter thermal power station stands a shining contraption that looks out of place in the decades-old machine hall. Its silver pipes and vats contain a substance that the company Vattenfall, the plant’s operator, says could become a key ingredient for a fossil fuel-free future. The energy company, together with a Swedish start-up, is testing the use of salt to store heat, which accounts for more than half the power consumed in Germany. If it works well, the system could help solve a problem posed by renewable energy sources like wind and solar: unreliability, meaning they sometimes generate too much, and sometimes too little power. “Germany currently has enough installed renewable energy capacity to produce twice as much as it needs, it’s just not constant,” says Hendrik Roeglin, who oversees the salt storage project for Vattenfall. At the Reuter power plant in Berlin, which supplies 600,000 households in the capital with heat, the solution involves the use of calcium oxide, also known as quicklime. Vattenfall and Swedish start-up SaltX have been taking advantage of a simple chemical reaction that occurs when quicklime becomes wet: the salt-like grains soak up the water, becoming calcium hydroxide and releasing large amounts of heat in the process. By removing the water again, the substance turns back into calcium oxide. The process essentially mirrors how batteries work, except that instead of electricity, the system stores heat. Roeglin says the process can absorb ten times more energy than water, which is currently used for power- to-heat facilities. And unlike tanks of hot water, which slowly cool down over time, the system can retain the chemically-trapped energy for far longer. Need heat? Just add water. The pilot project in Berlin can currently store enough energy to heat about 100 large houses. But SaltX says the facility could easily be scaled up and provide heat to any of the homes or offices already connected to the capital’s district heating system. Such networks — consisting of pipes pumping hot water or steam from power plants to consumers — exist in many European countries, Canada, the United States, Japan and China. SaltX also notes that the calcium oxide currently mined in Finland could be safely recycled, giving it an edge over some battery technologies that use rare or toxic materials. “If your ambition is to be fossil-free within a generation, you have to consider various alternatives to reach that,” a representative of SaltX, Simon Ahlin, said during a visit to the facility. “This is an effective solution that’s available in a short time frame.”
1. The word “oversees” in paragraph 2 is closest in meaning to: 

Read the following passage and choose the best answer (A, B, C, D):
You can usually tell when your friends are happy or angry by the looks on their faces or by their actions. This is useful because reading their emotional expressions helps you to know how to respond to them. Emotions have evolved to help us respond to important situations and to convey our intentions to others. But does raising the eyebrows and rounding the mouth say the same thing in Minneapolis as it does in Madagascar ? Much research on emotional expressions has centered on such questions. According to Paul Ekman, the leading researcher in this area, people speak and understand substantially the same “facial language”. Studies by Ekman’s group have demonstrated that humans share a set of universal emotional expressions that testify to the common biological heritage of the human species. Smiles, for example, signal happiness and frowns indicate sadness on the faces of people in such far-flung places as Argentina, Japan, Spain, Hungary, Poland, Sumatra, the United States, Vietnam, the jungles of New Guinea, and the Eskimo villages north of Artic Circle. Ekman and his colleagues claim that people everywhere can recognize at least seven basic emotions: sadness, fear, anger, disgust, contempt, happiness, and surprise. There are, however, huge differences across cultures in both the context and intensity of emotional displays – the so-called display responses – expecially negative ones – while many American children are encouraged to express their feelings more openly. Regardless of culture, however, emotions usually show themselves, to some degree, in people’s behavior. From their first days in life, babies produce facial expressions that communicate their feelings. The ability to read facial expressions develops early, too. Very young children pay close attention to facial expressions, and by age five, they nearly equal adults in their skill at reading emotions on people’s faces. This evidence all points to a biological underpinning for our abilities to express and interpret a basic set of human emotions. Moreover, as Chales Dawin pointed out over a century ago, some emotional expressions seem to appear across species boundaries. Cross-cultural psychologists tell us that certain emotional responses carry different meanings in diferrent cultures. For example, what emotion do you suppose might be conveyed while sticking out your tounge ? For American, this might indicate disgust, while in China it can signify surprise. Likewise, a grin on an American face may indicate joy, while on a Japanese face it may just as easily mean embarrassment. Clearly, culture influences emotional expressions.
4. Paul Ekman is mentioned in the passage as an example of .

Read the text again. Decide whether the following statements are true (T), false (F), or not given (NG).

Changing lifestyles for better health

As a way of living, lifestyle is everyday behaviours, activities, and diet. It involves your work, leisure activities, food and drink consumption, and interaction with people. That is why it is important to have a healthy lifestyle. Although it is often difficult to change your habits, reorganising your daily activities to achieve a healthy lifestyle is not impossible. Here are some steps you need to take to have a better life and health.

Become more active

Scientists have proved that regular exercise can help to reduce cholesterol and the risk of heart disease. Remember that you do not need to do too much exercise - just a 30-minute walk a day will bring health benefits. But it is important that you do it regularly and safely. Simple things like walking or cycling to school, using the stairs instead of the lift, doing the housework and gardening can all contribute to good health.

Moreover, hobbies such as dancing, reading, listening to music, playing chess, and solving crossword or sudoku puzzles are also good ways to keep your body and mind engaged, and increase life expectancy. No matter where you are - at home, at work, or at play - always look for opportunities to be more active and energetic.

Eat healthily

‘Eat to live, not live to eat’ is the advice to follow.The food and drink we consume can dramatically affect our health. Bad nutrition based on fast food, and meals high in fat and sugar can lead to obesity, diabetes, some types of cancer and other chronic diseases. Planning and following a healthy and balanced diet is not difficult at all. Eat the right amount of calories to balance the energy you get from food and the energy you use. Make sure you have a wide range of foods to receive all the nutrients you need. Remember to eat less saturated fat, sugar and salt, and more fish, fruit, and vegetables.

Stay positive and be happy

Once you have started to be more active and eat more healthily, you can notice that you also feel happier. There is no doubt that daily worrying and stress can damage your heart and brain. When you are under a lot of stress, you may get angry easily. Anger and hostility have negative effects on the cardiovascular system. Recent research has confirmed that angry, hostile people live a shorter life. Try to control your anger, always look at the positive side of every situation and be optimistic. If necessary, practise sor-e meditation and yoga to help you to relieve your stress and anger, and enjoy life more.

Question 28. You should consume less fat and more sugar to balance the energy you use with the energy that goes into your body.

Read the passage and choose the correct answer:

The proverb 'A friend in need is a friend indeed.' means that we shall know who our real friends are when we are in need. Those who desert us when we are in difficulty are just unfaithful friends.

A true friend would remain with us whether we are rich or poor. Some people be friend the rich, simply for the sake of getting benefits from them.

It is useless to have insincere friends because these friends remain with us as long as we are rich or powerful. It is better to have one or two good friends rather than having hundreds of insincere ones.

A true friend will stand by us in our trials and tribulations. He will be a great source of consolation and comfort in our troubles. So we must be careful in choosing our friends. It is difficult to choose a sincere friend overnight; it takes years for us to find a sincere friend.

A true friend is always loyal to us and support us through our difficulties.

Read the following passage and choose the best answer (A, B, C, D):
Butterflies are among the most extensively studied insects, an estimated 90 percent of the world's species have their scientific names. As a consequence, they are, perhaps, the best group of insects for examining patterns of terrestrial biotic diversity and distribution. Butterflies also have a favorable image with the general public. Hence, they are an excellent group for communicating information on science and conservation issues such as diversity. Perhaps the aspect of butterflies diversity that has received the most attention over the past century is the striking difference in species richness between tropical and temperate regions. For example, in 1875 one biologist pointed out the diversity of butterflies in the Amazon when he mentioned that about 700 species were found within an hour's walk, whereas the total number found on the British islands did not exceed 66, and the whole of Europe supported only 321. This early comparison of tropical and temperate butterflies' richness has been well confirmed. A general theory of diversity would have to predict not only this difference between temperate and tropical zones, but also patterns within each region, and how these patterns vary among different animal and plant groups. However, for butterflies, variation of species richness within temperate or tropical regions, rather than between them, is poorly understood. Indeed, comparisons of numbers of species among the Amazon basin, tropical Asia, and Africa are still mostly "personal communication" citations, even for vertebrates. In other words, unlike comparison between temperate and tropical areas, these patterns are still in the documentation phase. In documenting geographical variation in butterflies' diversity, some arbitrary, practical decisions are made. Diversity, number of species, and species richness are used synonymously; little is known about the evenness of butterfìy distribution. The New World butterflies make up the preponderance of examples because they are the most familiar species. It is hoped that by focusing on them, the errors generated by imperfect and incomplete taxonomy will be minimized
8. Which of the following is NOT well understood by biologists?

Children all around the world love to read comic books. Maybe they like to read the kind of comic books that come out once a month, like Spiderman or Batman, or maybe they like manga-style comic books. That means that publishers who make comic books need to keep in touch with the things young people like to do. One thing that many young people today are interested in is technology, so of course kids want to read digital comic books on electronic devices.

Let's take Japanese manga as an example. There are lots of people around the world who enjoy reading manga. However, in the past, it was difficult to find translated versions of manga in comic bookstores. But that did not stop manga fans. Some fans who could translate Japanese into their own language started translating manga themselves. Then they scanned the pages of manga books and uploaded the scanned pages to the Internet with their translation. This practice has become so popular. People in the comic book industry made up a name for it. By combining the words scan and translation, they call it "scanlation", and it is a big problem today. The people who do scanlation usually share their manga for free, so readers do not buy manga books. Writers, artists, and publishers all end up losing money because of scanlation. Another problem is piracy in the comic book industry. Illegal copies of old and brand new comics alike have been hurting comic book sales.

Despite the progress made in converting comics to digital formats, hardcopy comic books are still by far the most popular format among fans. In the meantime, comic book publishers and stores will just have to keep an eye on their buyers' habits. As the popularity of digital books for e-readers and tablets grows, the popularity of digital comic books will grow as well.

According to paragraph 2, the practice of "scanlation" mostly involves ______.

Read the passage and choose the correct option (A, B, C, or D) to answer each of the given questions.

In 1959, the government of Egypt was working on a plan to build a dam on the River Nile. It was called the Aswan Dam, and it was intended to generate electricity and allow the river water to be used for agriculture. There was one big problem with the plan, though. The dam would flood a nearby valley that contained ancient Egyptian treasures, including two enormous stone temples.
It can be difficult for governments to choose culture and history over economics. However, if countries always made decisions like this, the majority of the world's ancient sites would end up being destroyed. Luckily, UNESCO stepped in. They formed a committee that tried to convince Egypt to protect its ancient treasures. With support from many countries, they were finally successful. The huge temples were carefully removed from their original site and moved to a safe location so that the dam could be built.

After their success in saving the temples in Egypt, UNESCO went on to save more sites around the world. They protected lagoons in Venice, ruins in Pakistan, and temples in Indonesia. With industrialisation changing the world rapidly, there were many sites that needed to be saved. Eventually, UNESCO formed the World Heritage Organisation to protect important natural and historic sites wherever it was necessary.

By now, the World Heritage Organisation has protected hundreds of sites ranging from beautiful natural islands to buildings in large cities and ancient ruins. If you're able to visit any of the many protected sites, you'll agree it was worth it.

What is meant by the first sentence of the second paragraph?

Read the following passage and choose the best answer (A, B, C, D):
Many of the most damaging and life-threatening types of weather-torrential rains, severe thunderstorms, and tornadoes-begin quickly, strike suddenly, and dissipate rapidly, devastating small regions while leaving neighboring areas untouched. One such event, a tornado, struck the northeastern section of Edmonton, Alberta, in July 1987. Total damages from the tornado exceeded $ 250 million, the highest ever for any Canadian storm. Conventional computer models of the atmosphere have limited value in predicting short-live local storms like the Edmonton tornado, because the available weather data are generally not detailed enough to allow computers to discern the subtle atmospheric changes that precede these storms. In most nations, for example, weather balloon observations are taken just once every twelve hours at locations typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short-range forecasts, or "Nowcasts", was not feasible. The cost of equipping and operating many thousands of conventional weather stations was prohibitively high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were insurmountable. Fortunately, scientific and technological advances have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observation over large regions at a relatively low cost. Communications satellites can transmit data around the world cheaply and instantaneously, and modern computers can quickly compile and analyzing this large volume of weather information. Meteorologists and computer scientists now work together to design computer programs and video equipment capable of transforming raw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, Nowcasting is becoming a reality.
2: Why does the author mention the tornado in Edmonton, Canada?

Read the passage carefully, then choose the correct answers.

Having a best friend to confide in can bring a positive effect on our emotional health. An evening out with the closest friend may be the best guarantee of a good time. In fact, our best friend can prevent us from developing serious psychological problems such as depression and anxiety.

Best friendship evolves with time - we cannot go out and pick our best friend. We become friends with people who share common interests – at school or through hobbies, for example.

Best friends have usually known each other for years and stuck together through good and bad times. If you haven't got one, perhaps you are being too distant from people, or focusing too much on your work.

 The word 'one' in the last paragraph refers to ________.

Read the following passage carefully and choose the word that best fits each space.

Here are some suggestions for practical (9) _____. Use less fuel at home and at work. Persuade the government to pay for researchers into alternative (10) _____ resources like solar power. Recycle paper, glass, metal, plastic and batteries as (11) _____ as possible. Ask for bottle banks for glass recycling at local supermarkets. Walk, cycle or use public (12) _____ if possible, to cut down on car exhaust fumes, which contribute to the greenhouse effect. Launch campaign for public transport systems to be improved. Join one of the many pressure groups which work to protect wildlife and the countryside.

11.......................

Read the following passage and choose the best answer (A, B, C, D):
Tulips are Old World, rather than New World, plants, with the origins of the species lying in Central Asia. They became an integral part of the gardens of the Ottoman Empire from the sixteenth century onward, and, soon after, part of European life as well. Holland, in particular, became famous for its cultivation of the flowers. A tenuous line marked the advance of the tulip to the New World, where it was unknown in the wild. The first Dutch colonies in North America had been established in New Netherlands by the Dutch West India Company in 1624, and one individual who settled in New Amsterdam (today's Manhattan section of New York City) in 1642 described the flowers that bravely colonized the settlers' gardens. They were the same flowers seen in Dutch still-life paintings of the time: crown imperials, roses, carnations, and of course tulips. They flurished in Pennsylvania too, where in 1698 William Penn received a report of John Tateham's "Great and Stately Palace," its garden full of tulips. By 1760, Boston newspapers were advertising 50 different kinds of mixed tulip "roots." But the length of the journey between Europe and North America created many difficulties. Thomas Hancock, an English settler, wrote thanking his plant supplier for a gift of some tulip bulbs from England, but his letter the following year grumbled that they were all dead. Tulips arrived in Holland, Michigan, with a later wave of early nineteenth-century Dutch immigrants who quickly colonized the plains of Michigan. Together with many other Dutch settlements, such astheone at Pella, Iowa, they established a regular demand for European plants. The demand was bravely met by a new kind of tulip entrepreneur, the traveling salesperson. One Dutchman, Hendrick van de Schoot, spent six months in 1849 traveling through the United States taking orders for tulip bulbs. While tulip bulbs were traveling from Europe to the United States to satisfy the nostalgic longings of homesick English and Dutch settlers, North American plants were traveling in the opposite direction. In England, the enthusiasm for American plants was one reason why tulips dropped out of fashion in the gardens of the rich and famous 
4. The word "flurished" in paragraph 2 is closest in meaning to: 

Read the following passage and choose the best answer (A, B, C, D):
There are many theories about the beginning of drama in ancient Greece. The one most widely accepted today is based on the assumption that drama evolved from ritual. The argument for this view goes as follows. In the beginning, human beings viewed the natural forces of the world, even the seasonal changes, as unpredictable, and they sought, through various means, to control these unknown and feared powers. Those measures which appeared to bring the desired results were then retained and repeated until they hardened into fixed rituals. Eventually stories arose which explained or veiled the mysteries of the rites. As time passed some rituals were abandoned, but the stories, later called myths, persisted and provided material for art and drama. Those who believed that drama evolved out of ritual also argue that those rites contained the seed of theater because music, dance, masks, and costumes were almost always used. Furthermore, a suitable site hard to be provided for the performances, and when the entire community did not participate, a clear division was usually made between the “acting area” and the “auditorium”. In addition, there were performers, and since considerable importance was attached to avoiding mistakes in the enactment of rites, religious leaders usually assumed that task. Wearing masks and costumes, they often impersonated other people, animals, or supernatural beings, and mimed the desired effect- success in hunt or battle, the coming rain, the revival of the Sun as an actor might. Eventually such dramatic representations were separated from religious activities. Another theory traces the theater’s origin from the human interest in storytelling. According to this view, tales (about the hunt, war or other feats) are gradually elaborated, at first through the use of impersonation, action, and dialogue by a narrator and then through the assumption of each of the roles by a different person. A closely related theory traces theater to those dances that are primarily rhythmical and gymnastic or that are imitation of animal movements and sounds.
6: The word "enactment" in paragraph 3 is closest in meaning to .

Read the following passage and choose the best answer (A, B, C, D):
Amid the hum and heat of Berlin’s Reuter thermal power station stands a shining contraption that looks out of place in the decades-old machine hall. Its silver pipes and vats contain a substance that the company Vattenfall, the plant’s operator, says could become a key ingredient for a fossil fuel-free future. The energy company, together with a Swedish start-up, is testing the use of salt to store heat, which accounts for more than half the power consumed in Germany. If it works well, the system could help solve a problem posed by renewable energy sources like wind and solar: unreliability, meaning they sometimes generate too much, and sometimes too little power. “Germany currently has enough installed renewable energy capacity to produce twice as much as it needs, it’s just not constant,” says Hendrik Roeglin, who oversees the salt storage project for Vattenfall. At the Reuter power plant in Berlin, which supplies 600,000 households in the capital with heat, the solution involves the use of calcium oxide, also known as quicklime. Vattenfall and Swedish start-up SaltX have been taking advantage of a simple chemical reaction that occurs when quicklime becomes wet: the salt-like grains soak up the water, becoming calcium hydroxide and releasing large amounts of heat in the process. By removing the water again, the substance turns back into calcium oxide. The process essentially mirrors how batteries work, except that instead of electricity, the system stores heat. Roeglin says the process can absorb ten times more energy than water, which is currently used for power- to-heat facilities. And unlike tanks of hot water, which slowly cool down over time, the system can retain the chemically-trapped energy for far longer. Need heat? Just add water. The pilot project in Berlin can currently store enough energy to heat about 100 large houses. But SaltX says the facility could easily be scaled up and provide heat to any of the homes or offices already connected to the capital’s district heating system. Such networks — consisting of pipes pumping hot water or steam from power plants to consumers — exist in many European countries, Canada, the United States, Japan and China. SaltX also notes that the calcium oxide currently mined in Finland could be safely recycled, giving it an edge over some battery technologies that use rare or toxic materials. “If your ambition is to be fossil-free within a generation, you have to consider various alternatives to reach that,” a representative of SaltX, Simon Ahlin, said during a visit to the facility. “This is an effective solution that’s available in a short time frame.”
4. The word “which” in paragraph 1 refers to: 

Read the text and choose the best option to fill in each blank numbered:
Keeping your distance
Personal space is a term that refers (1)_______  the distance we like to keep between ourselves and other people. When (2) _______ we do not know well gets too close we usually begin to feel uncomfortable. If a business colleague comes closer than 1.2 meters, the most common response is to move (3)______ Some interesting (4)______ have been done in libraries. If strangers come too close, many people get up and leave the building; others use different methods such as turning their back on the intruder. Living in cities has made people develop new skills for dealing with situations where they are very close to strangers. Most people on crowded trains try not to look at strangers; they avoid skin contact, and apologize if hands touch by mistake. People use newspapers (5)_______ a barrier between themselves and other people, and if they do not have one, they stare into the distance, making sure they are not looking into anyone’s eyes.

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 19 to 23:

Holidays are rich in old traditions and are (19) _______in Scotland, Ireland, Wales and England. Christmas is a great English (20) _______ holiday, and in Scotland it is not kept at all, except by clerks in banks; all the shops, mills and factories are working. But six days later, (21)_______ New Year’s Eve, the Scots begin to enjoy themselves. People invite their friends to their house (22)_______ “sit the old year out and the new year in”. When the clock begins to strike, the head of the family (23)_______to the front door, opens it wide, and holds it until the last stroke. Then he shuts the door. He has let the old year out and the New Year in.

Question 20:....................

Read the following passage and choose the best answer (A, B, C, D):
According to anthropologists, people in preindustrial societies spent 3 to 4 hours per day or about 20 hours per week doing the work necessaryfor life. Modern comparisons of the amount of work performed per week, however, begin with the Industrial Revolution (1760-1840) when 10- to 12-hour workdays with six workdays per week were the norm. Even with extensive time devoted to work, however, both incomes and standards of living were low. As incomes rose near the end of the Industrial Revolution, it became increasingly common to treat Saturday afternoons as a half-day holiday. The half-day holiday had become standard practice in Britain by the 1870's, but did not become common in the United States until the 1920's. In the United States, the first third of the twentieth century saw the workweek move from 60 hours per week to just under 50 hours by the start of the 1930s. In 1914 Henry Ford reduced daily work hours at his automobile plants from 9 to 8. In 1926 he announced that henceforth his factories would close for the entire day on Saturday. At the time, Ford received criticism from other firms such as United States Steel and Westinghouse, but the idea was popular with workers. The Depression years of the 1930s brought with them the notion of job sharing to spread available work around; the workweek dropped to a modem low for the United States of 35 hours. In 1938 the Fair Labor Standards Act mandated a weekly maximum of 40 hours to begin in 1940, and since that time the 8-hour day, 5-day workweek has been the standard in the United States. Adjustments in various places, however, show that this standard is not immutable. In 1987, for example, German metal workers struck for and received a 37.5-hour workweek; and in 1990 many workers in Britain won a 37-hour week. Since 1989, the Japanese government has moved from a 6- to a 5-day workweek and has set a national target of 1,800 work hours per year for the average worker. The average amount of work per year in Japan in 1989 was 2,088 hours per worker, compared to 1,957 for the United States and 1,646 for France.
4: The word "henceforth" in paragraph 2 is closest in meaning to: 

"In American, although most men still do less housework than their wives, that gap has been halved since the 1960s. Today, 41 per cent of couples say they share childcare equally, compared with 25 percent in 1985. Men's greater involvement at home is good for their relationships with their spouses, and also good for their children. Hands-on fathers make better parents than men who let their wives do all the nurturing and childcare. They raise sons who are more expressive and daughters who are more likely to do well in school - especially in math and science.

In 1900, life expectancy in the United States was 47 years, and only four per cent of the population was 65 or older. Today, life expectancy is 76 years, and by 2025, it is estimated about 20 per cent of the U.S. population will be 65 or older. For the first time, a generation of adults must plan for the needs of both their parents and their children. Most Americans are responding with remarkable grace. One in four households gives the equivalent of a full day a week or more in unpaid care to an aging relative, and more than half say they expect to do so in the next 10 years. Older people are less likely to be impoverished or incapacitated by illness than in the past, and have more opportunity to develop a relationship with their grandchildren.

Even some of the choices that worry people the most are turning out to bemanageable. Divorce rates are likely to remain high, and in many cases marital breakdown causes serious problems for both adults and kids. Yet when parents minimize conflict, family bonds can be maintained. And many families are doing this. More non-custodial parents are staying in touch with their children. Child-support receipts are rising. A lower proportion of children from divorced families are exhibiting problems than in earlier decades. And stepfamilies are learning to maximize children's access to supportive adults rather than cutting them off from one side of the family."

 3: According to the writer, old people in the USA ____.

Read the following passage and choose the best answer (A, B, C, D):
When jazz began to lose its reputation as "low-down" music and to gain well-deserved acclaim among intellectuals, musicians began to feature many instruments previously considered inappropriate for jazz. Whereas before the 1950s, jazz musicians played only eight basic instruments in strict tempo, in this decade they started to improvise on the flite, electric organ, piccolo, accordion, cello, and even bagpipes, with the rhythm section composed for strings or piano. Big bands no longer dominated jazz, and most changes emerged from small combos, such as the Dave Brubeck Quartet and the Gerry Mulligan Quartet. The Gerry Mulligan Quartet proved that a small, modern band could sound complete without a piano; the rhythm section consisted only of a set of drums and a string bass. Jazz continued to move in new directions during the 1960s. Saxophonist and composer Ornette Coleman led a quartet playing "free" jazz that was atonal. Pianist Cecil Taylor also conducted similar experiments with music, and John Coltrane included melodies from India in his compositions. In the 1970s musicians blended jazz and rock music into fusion jazz which combined the melodies and the improvisations of jazz with the rhythmic qualities of rock'n' roll, with three or five beats to the bar and in other meters. The form of jazz music was greatly affected by electric instruments and electronic implements to intensify, distort, or amplify their sounds. However, the younger musicians of the time felt compelled to include a steady, swinging rhythm which they saw as a permanent and essential element in great jazz.
6. The author believes that the developments in jazz described in the passage

Read the passage below and anwser the following question.

"Let's see if you can correctly answer the following question: At what age are Latter-day Saint youth allowed to date? Of course, you probably immediately said, "16". OK, then, how about this one: At what age are you allowed to have a boyfriend or girlfriend? You may be thinking, “Um, 16. Didn't I just answer that?" Well, if that was your answer, then, even though you aced the first question, you missed the second one. Just because you can date when you turn 16 doesn't mean you should immediately start looking for a steady boyfriend or girlfriend.

To begin with, there are two different types of dating: casual dating and steady (or serious) dating. The distinction between the two has to do with exclusivity. With casual dating, there is no exclusivity. The two people aren't “a couple” or “an item”, and they don't refer to each other as a “boyfriend” or “girlfriend”. They don't pair off. People who are casually dating are simply friends. This is the kind of dating the Church encourages you to do after you turn 16. You should put aside a need to find a “one and only”. If you're dating casually, you don't expect a relationship to become a romance. You have fun; you do a variety of things with a variety of people. On the other hand, steady dating means the couple is exclusive with one another. They expect each other not to date anyone else or to be emotionally or physically close with other people. Couples who date seriously consider the future, because there is a real possibility they could stay together. This is the kind of dating the Church encourages young adults (generally, people in their 20s) to progress toward, because that's the age when they should be thinking of marrying."

 1: It can be inferred from the first paragraph that ____.

Read the following passage and choose the best answer (A, B, C, D):
Light from a living plant or animal is called bioluminescence, or cold light, to distinguish it from incandescence or heat-generating light. Life forms could not produce incandescent light without being burned. Their light is produced in chemicals combining in such a way that little or no measurable heat is produced, and the life forms generating it are unharmed. Although bioluminescence is a relatively complicated process, it can be reduced to simple terms. Living light occurs when luciferin and oxygen combine in the presence of luciferase. In a few cases, fireflies the most common, an additional compound called ATP is required. The earliest recorded experiments with bioluminescence in the late 1800s are attributed to Raphael Dubois, who extracted a luminous fluid from a clam, observing that it continued to glow in the test tube for several minutes. He named the substance luciferin, which means “the bearer of life”. In further research, Dubois discovered that several chemicals were required for bioluminescence to occur. In his notes, it was recorded that a second important substance, which he called luciferase, was always present. In later study of small, luminous sea creatures, Newton Harley concluded that luciferin was composed of carbon, hydrogen, and oxygen, which are the building blocks of all living cells. He also proved that there are a variety of luciferin and luciferase, specific to the plants and animals that produce them. Much remains unknown, but many scientists who are studying bioluminescence now believe that the origin of the phenomenon may be traced to a time when there was no oxygen in the Earth’s atmosphere. When oxygen was gradually introduced to the atmosphere, it was actually poisonous to life forms, plants and animals produced light to use up the oxygen in a gradual but necessary adaptation. It is speculated that millions of years ago, all life may have produced light to survive. As the millennia passed, life forms on Earth became tolerant of, and finally dependent on oxygen, and the adaptation that produced bioluminescence was no longer necessary, but some primitive plants and animals continued to use the light for new functions such as mating or attracting prey.
10: The paragraph following the passage most probably discuss .

Read the following passage and choose the best answer (A, B, C, D):
A useful definition of an air pollutant is a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals vegetations, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled-a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of the health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions. Many of the more important air pollutants, such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentrations of these pollutants were altered by various chemical reactions; they became components in biogeochemical cycle. These serve as an air purifiation scheme by allowing the compounds to move from the air to the water or soil on a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In this localized regions, human output may be dominant and may temporarily overload the natural purifiation scheme of the cycle. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities.The actual concentration need not be large for a substance to be a pollutant; in fact the numerical value tells US little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, has a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.
5: Natural pollutants can play an important role in controlling air pollution for which of the following reasons?