Choose the best answer
If you ………………… to me, you wouldn’t have got so much trouble.

 

Read the following passage and choose the best answer (A, B, C, D):
Vegetables are parts of (1) __________ that are consumed by humans or other animals as food. The original meaning is still commonly used and is applied to plants collectively to refer to all edible plant matter, (2) __________ the flowers, fruits, stems, leaves, roots, and seeds. Originally, vegetables were collected from the wild by huntergatherers and entered cultivation in several parts of the world, probably during the period 10,000 BC to 7,000 BC, when a new agricultural way of life developed. At first, plants which grew locally would have been cultivated, but as time went on, trade brought exotic crops from (3)__________ to add to domestic types. Nowadays, most vegetables are grown all over the world as climate permits. Crops may be cultivated in protected environments in less suitable locations, and global trade in (4) __________ products allows consumers to purchase vegetables grown in faraway countries. The scale of production varies from subsistence farmers supplying the needs of their family for food, to agribusinesses with vast areas of single-product crops. Depending on the type of vegetable concerned, harvesting the crop is followed by grading, storing, processing, and marketing. Vegetables can be eaten (5) __________ raw or cooked and play an important role in human nutrition, being mostly low in fat and carbohydrates, but high in vitamins, minerals and dietary fiber. Many nutritionists encourage people to consume plenty of fruit and vegetables, five or more portions a day often being recommended

Read the following passage and choose the best answer (A, B, C, D):
Generation gap refers to a vast difference in cultural norms between a younger generation and their elders. It’s a distressing thing for the phenomenon (1) ____ occurs around the world. The (2) ____ of communication, different views on certain problems and different attitudes towards life may cause the generation gap or even widen it. First, one of the major factors for this misunderstanding between two generations is that parents and children lack communication. Young people (3) ____ reveal their feelings to their parents, and often complain that their parents are out of (4) ____ with modern days, that they are dominant, that they do not trust their children to deal with crises, and that they talk too much about certain problems. So when young people meet some problems, they would rather (5) ____ to their classmates or their friends for help. The lack of communication widens the generation gap Another factor is that parents and their children see almost everything from different (6) ____. Take choosing career as an example. Parents generally believe it is their responsibility to plan the career for their children. Some hope their children will (7) ____ professions that will bring them greatest prestige and economic benefits. Some hope children will have a stable job with a regular income. But the youth may think they should be free to (8) ____ their own decisions as to their future career. Young people explain that true success is not a matter of money or position, instead, it is a matter of self-fulfillment. Finally, with the change of the world over decades, the attitude of the young has altered too. There are differences in (9) ____ matters as musical tastes, fashions, drug use, sex and politics between the young people and their elders. Nowadays long hair on young males is viewed as fashion by the young, but it is frequently considered a shocking act of rebellion against (10) ____ norms by parents

Choose the best answer:
We don’t think the white shirt ………..him.

Read the following passage and choose the best answer (A, B, C, D):
Hardcover and paperback are two types of books and bookbinding processes. A hardcover book is also called a hardback or hardbound. On the other hand, a paperback also goes by the names softback and soft cover. Paperbacks can be further classified as trade paperbacks and mass-market paperbacks. Paperback book, as its name implies, has a soft card or a thick paper cover over the pages. This type of covering is less heavy but prone to folding, bending, and wrinkles with use and over time. Hardcover books are characterized with a thick and rigid covering. This covering allows protection for the pages and makes the book durable and usable for a long time. Oftentimes, a hardcover book has a dust that protects the books from dust and other wear and tear. Some books are even made durable by using leather or calfskin as a book covering. In terms of manufacturing and purchasing books, hardcover books are more expensive due to the materials and processes. Pages of hardcover books are acid-free paper. This type of paper allows preservation of the ink and is ideal for books in use and preserving them for a long time. On the other hand, paperbacks use cheap paper, usually newsprint. The reason for this is to lower production costs and being readily made available for the masses. The paper in a hardcover book is usually stitched together before being glued, stapled, or sewn to the book’s spine. Due to the stitches, a hardcover book can have signatures, a place where the binding threads are visible. Meanwhile, a paperback book’s pages are glued together and glued again to the spine. This makes the pages loose or separated while being in use. Hardcover books are often applied to academic books, references books, commercial, and bestsellers that have enjoyed financial success. Other books in the hardcover version are books of collectible value. Publishers often release a hardcover version of the book to show investment so that they can project a high return of investment. This is a large contrast regarding paperbacks. Paperback books are done for new or succeeding editions, reprinting of books or books with little profit margin. Publishers use the paperback editions to stretch the profit for the book. The first release or first edition of a literary work is purposefully done as a hardcover book followed by paperback versions.
2. The word “classified” in paragraph 1 hold the same meaning as _______

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

Biofuels and the Environment

Leading investors have joined the growing chorus of concern about governments and companies rushing into producing biofuels as a solution for global warming, saying that many involved in the sector could be jeopardizing future profits if they do not consider the long-term impact of what they are doing carefully.

It is essential to build sustainability criteria into the supply chain of any green fuel project in order to ensure that there is no adverse effect on the surrounding environment and social structures. The report produced by the investors expresses concern that many companies may not be fully aware of the potential pitfalls in the biofuel sector.

Production of corn and soya beans has increased dramatically in the last years as an eco-friendly alternative to fossil fuels but environmental and human rights campaigners are worried that this will lead to destruction of rain forests. Food prices could also go up as there is increased competition for crops as both foodstuffs and sources of fuel. Last week, the UN warned that biofuels could have dangerous side effects and said that steps need to be taken to make sure that land converted to grow biofuels does not damage the environment or cause civil unrest. There is already great concern about palm oil, which is used in many foods in addition to being an important biofuel, as rain forests are being cleared in some countries and people driven from their homes to create palm oil plantations.

An analyst and author of the investors' report say that biofuels are not a cure for climate change but they can play their part as long as governments and companies manage the social and environmental impacts thoroughly. There should also be greater measures taken to increase efficiency and to reduce demand.

____ are worried about the boom in biofuels.

Read the following passage and choose the best answer (A, B, C, D):
When living and working in another country, there are numerous things to consider  apart from the more obvious ones of climate, language, religion, currency, etc. Some important considerations are less obvious. For example, do you have a pet or do you enjoy a hobby such as horse riding? Your animal or hobby may be perceived in a completely different light in another culture so it’s important to consider the significance given to specific animals in different parts of the world and general perceptions towards them.  One example which is often mentioned in popular press is the case of dogs. In some cultures, like the US or UK, dogs are loved and considered a great pet to have at home and with the family. In other cultures, such as those where Islam is the majority religion, dogs may be perceived as dirty or dangerous. Muslims’ treatment of dogs is still a matter of debate amongst Islamic scholars . While these animals are widely considered by many Western cultures to be ‘man’s best friend’, the Koran describes them as unhygienic. Muslims will therefore avoid touching a dog unless he can wash his hands immediately afterwards, and they will almost never keep a dog in their home.  In Iran, for instance, a cleric once denounced ‘the moral depravity’ of dog owners and even demanded their arrest. If you are an international assignee living and working in Saudi Arabia or another Arabic country, you should remember this when inviting Arab counterparts to your house in case you have a dog as a pet. This is just one example of how Islam and other cultural beliefs can impact on aspects of everyday life that someone else may not even question. A Middle Eastern man might be very surprised when going to Japan, for instance, and seeing dogs being dressed and pampered like humans and carried around in baby prams!  Dogs are not the only animals which are perceived quite differently from one culture to another. In India, for example, cows are sacred and are treated with the utmost respect. Conversely in Argentina, beef is a symbol of national pride because of its tradition and the high quality of its cuts. An Indian working in Argentina who has not done his research or participated in a cross cultural training programme such as Doing Business in Argentina may be surprised at his first welcome dinner with his Argentinean counterparts where a main dish of beef would be served.  It is therefore crucial to be aware of the specific values assigned to objects or animals in different cultures to avoid faux-pas or cultural misunderstandings, particularly when living and working in another culture. Learning how people value animals and other symbols around the world is one of the numerous cultural examples discussed in Communicaid’s intercultural training courses. Understanding how your international colleagues may perceive certain animals can help you ensure you aren’t insensitive and it may even provide you with a good topic for conversation. 
7. What does the author suggest in the last paragraph?

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:
The difference between the nuclear family and the extended family is that a nuclear family refers to a single basic family unit of parents and their children, whereas the extended family refers to their relatives such as grandparents, in-laws, aunts and uncles, etc. In many cultures, and particularly indigenous societies, the latter is the most common basic form of social organization. A nuclear family is limited, according to Kristy Jackson of Colorado State University, to one or two parents (e.g. a father and mother) and their own child, or children, living together in a single house or other dwellings. In anthropology, they only must be related in this fashion; there is no upper or lower limit on the number of children in a nuclear family.
The extended family is a much more nebulous term, but in essence refers to kin or relations not covered by the above definition. In historical Europe and Asia as well as in Middle Eastern, African, and South American Aboriginal cultures, extended family groups were typically the most basic unit of social organization. The term can differ in specific cultural settings, but generally includes people related in age or by lineage. Anthropologically, the term “extended family” refers to such a group living together in a household, often with three generations living together (grandparents, parents, and children) and headed in patriarchal societies by the eldest man or by some other chosen leadership figure. However, in common parlance, the term “extended family” is often used by people simply to refer to their cousins, aunts, uncles, and so on, even though they are not living together in a single group.
Historically, most people in the world have lived in extended family groupings rather than in nuclear families. This was even true in Europe and in the early United States, where multiple generations often lived together for economic reasons. During the 20th century, average income rose high enough that living apart as nuclear families became a viable option for the vast majority of the American population. In contrast, many indigenous societies and residents of developing countries continue to have multiple generations living in the same household. The rise of the nuclear family in the modern West does not necessarily mean that family arrangements have stabilized, either. The rapid growth in single-parent households, for instance, also represents a substantial change in the traditional nuclear family. More couples are also choosing not to have children at all.

The word “the latter” in paragraph 1 refers to     .

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

Several developed countries have had a rapid decline in fertility  because many women there have delayed to have children

Read the following passage and choose the best answer (A, B, C, D):
Are you preparing for a big test? If so, you may want to play some basketball in between hitting the books. Based on information they have collected over the years, researchers have seen an apparent connection between exercise and brain development. Judy Cameron, a researcher at Oregon Health and Science University, studies brain development. According to her research, it seems that exercise can make blood vessels, including those in the brain, stronger and more fully developed. Cameron claims this allows people who exercise to concentrate better. She says, “While we already know that exercise is good for the heart, exercise can literally cause physical changes in the brain.” The effects of exercise on brain development can even be seen in babies. Babies who do things that require a lot of movement and physical activity show greater brain development than babies who are less physically active. With babies, even a little movement can show big results. Margaret Barnes, a pediatrician, believes in the importance of exercise. She thinks that many learning disabilities children have in elementary school or high school can be traced back to a lack of movement as babies. “Babies need movement that stimulates their five senses,” says Barnes. “They need to establish a connection between motion and memory. In this way, as they get older, children will begin to associate physical activity with higher learning.” The benefits of exercise on the brain are not just for babies. Older people can beef up their brains by working out as well. Researchers at Cornell University studied a group of seniors ranging in age from seventy to seventy-nine. Their study showed a short-term memory increase of up to forty percent after exercising just three hours a week. The exercise does not have to be very difficult, but it does have to increase the heart rate. Also, just like the motion for infants, exercise for older people should involve some complexity. Learning some new skills or motions, such as with yoga or tai-chi, helps open up memory paths in the brain that may not have been used for a long time  
4. The phrase “beef up” in the last paragraph mostly means ___________

Read the following passage and choose the best answer (A, B, C, D):
Long life expectancy can be attributed to a person’s diet - a healthy, balanced diet has been proven to improve longevity. Experts recommend eating at least five portions of a variety of fruit and vegetables every day, basing meals on higher starchy foods like potatoes, bread and rice, having some dairy or dairy alternatives, eating some protein, choosing unsaturated oils and spreads, and drinking plenty of fluids. But new research, published this week, has found the times of day a person eats holds the most benefits. Dr Mark Mattson, a professor of neuroscience at John Hopkins University School of Medicine, in the US, has said “intermittent fasting could be part of a healthy lifestyle.” Intermittent fasting diets usually involve daily time-restricted feeding, which narrows eating times to six to eight hours per day and so-called 5:2 intermittent fasting, in which people limit themselves to one moderate-sized meal two days each week. A range of human and animal studies have shown that alternating between times of fasting and eating supports cellular health, probably by triggering an age-old adaptation to periods of food scarcity called metabolic switching. Such a switch occurs when cells use up their stores of rapidly accessible, sugar-based fuel, and begin converting fat into energy in a slower metabolic process. Dr Mattson says studies have shown that this switch improves blood sugar regulation, increases resistance to stress and suppresses inflammation. Because most Americans eat three meals plus snacks each day, they do not experience the switch, or the suggested benefits. In an article in the New England Journal of Medicine, Dr Mattson said four studies in both animals and people found intermittent fasting also decreased blood pressure, blood lipid levels and resting heart rates.  
5. According to paragraph 3, how can practicing intermittent fasting benefit a person’s health?

Read the following passage and choose the best answer (A, B, C, D):
How busy is too busy? For some it means having to miss the occasional long lunch;  for others, it means missing lunch altogether. For a few, it is not being able to take a “sickie” once a month. Then there is a group of people for whom working every evening and weekend is normal, and frantic is the tempo of their lives. For most senior executives, workloads swing between extremely busy and frenzied. The vice-president of the management consultancy AT Kearney and its head of telecommunications for the Asia-Pacific region, Neil Plumridge, says his work weeks vary from a “manageable” 45 hours to 80 hours, but average 60 hours.  Three warning signs alert Plumridge about his workload: sleep, scheduling and family. He knows he has too much on when he gets less than six hours of sleep for three consecutive nights; when he is constantly having to reschedule appointments; “and the third one is on the family side”, says Plumridge, the father of a three-year-old daughter, and expecting a second child in October. “If I happen to miss a birthday or anniversary, I know things are out of control.” Being “too busy” is highly subjective. But for any individual, the perception of being too busy over a prolonged period can start showing up as stress: disturbed sleep, and declining mental and physical health. National workers’ compensation figures show stress causes the most lost time of any workplace injury. Employees suffering stress are off work an average of 16.6 weeks. The effects of stress are also expensive.  Comcare, the Federal Government insurer, reports that in 2003-04, claims for psychological injury accounted for 7% of claims but almost 27% of claim costs. Experts say the key to dealing with stress is not to focus on relief – a game of golf or a massage – but to reassess workloads. Neil Plumridge says he makes it a priority to work out what has to change; that might mean allocating extra resources to a job, allowing more time or changing expectations. The decision may take several days. He also relies on the advice of colleagues, saying his peers coach each other with business problems. “Just a fresh pair of eyes over an issue can help,” he says. Executive stress is not confined to big organizations. Vanessa Stoykov has been running her own advertising and public relations business for seven years, specializing in work for financial and professional services firms. Evolution Media has grown so fast that it debuted on the BRW Fast 100 list of fastest-growing small enterprises last year – just after Stoykov had her first child. Stoykov thrives on the mental stimulation of running her own business. “Like everyone, I have the occasional day when I think my head’s going to blow off,” she says. Because of the growth phase the business is in, Stoykov has to concentrate on short-term stress relief – weekends in the mountains, the occasional “mental health” day – rather than delegating more work. She says: “We’re hiring more people, but you need to train them, teach them about the culture and the clients, so it’s actually more work rather than less.” 
7.  According to the last paragraph, what measure does Vanessa Stoykov take to reduce work stress?

Read the following passage and choose the best answer (A, B, C, D):
Hardly a week goes by without some advance in technology that would have seemed  incredible 50 years ago. And we can expect the rate of change to accelerate rather than slow down within our lifetime. The developments in technology are bound to have a dramatic effect on the future of work. By 2010, new technology will have revolutionized communications. People will be transmitting messages down telephone lines that previously would have been sent by post. Not only postmen but also clerks and secretaries will vanish in a paper-free society. All the routine tasks they perform. will be carried on a tiny silicon chip so that they will be as obsolete as the horse and cart after the invention of the motor car. one change will make thousands, if not millions, redundant.  Even people in traditional professions, where expert knowledge has been the key, are unlikely to escape the effects of new technology. Instead of going to a solicitor, you might go to a computer which is programmed with all the most up-to-date legal information. Doctors, too, will find that an electronic competitor will be able to carry out a much quicker and more accurate diagnosis and recommend more efficient courses of treatment. In education, teachers will be largely replaced by teaching machines far more knowledgeable than any human being. Most learning will take place in the home via video conferencing. Children will still go to school though, until another place is created where they can make friends and develop social skills.  What can we do to avoid the threat of unemployment? We shouldn’t hide our heads in the sand. Unions will try to stop change but they will be fighting a losing battle. People should get computer literate as this just might save them from professional extinction. After all, there will be a few jobs left in law, education and medicine for those few individuals who are capable of writing and programming the software of the future. Strangely enough, there will still be jobs like rubbish collection and cleaning as it is tough to programme tasks which are largely unpredictable.
7. The phrase “hide our heads in the sand” in the passage probably means ______

Application for admission to the Graduate School at this university must be made on forms provided by the Director of Admission. An applicant whose undergraduate work was done at another institution should request that two copies of undergraduate transcripts and degrees be sent directly to the Dean of the Graduate School. Both the application and the transcripts must be on file at least one month prior to the registration date, and must be accompanied by a non-refundable ten-dollar check or money order to cover the cost of processing the application. Students who have already been admitted to the Graduate School but were not enrolled during the previous semester should reapply for admission using a special short form available in the office of the Graduate School. It is not necessary for students who have previously been denied admission to resubmit transcripts; however, new application forms must accompany all requests for reconsideration. Applications should be submitted at least eight weeks in advance of the session in which the student wishes to enroll. Students whose applications are received after the deadline may be considered for admission as non-degree students, and may enroll for six credit hours. Non-degree status must be changed prior to the completion of the first semester of study, however. An undergraduate student of this university who has senior status and is within ten credit hours of completing all requirements for graduation may register for graduate work with the recommendation of the chairperson of the department and the approval of the Dean of the Graduate School

According to this passage, where would a student secure application forms for admission to the university?

Read the following passage and choose the best answer (A, B, C, D):
Frenchman Edouard de Laboulaye first proposed the idea of a monument for the United States in 1865. Ten years later sculptor Frederic Auguste Bartholdi was commissioned to design a sculpture with 1876 in mind for completion, to commemorate the centennial of the American Declaration of Independence. The Statue was named “Liberty Enlightening the World” and was a joint effort between America and France. It was agreed that the American people were to build the pedestal, and the French people were responsible for the Statue and its assembly here in the United States. However, lack of funds was a problem on both sides of the Atlantic Ocean. In France, public fees, various forms of entertainment, and a lottery were among the methods used to raise funds. In the United States, benefit theatrical events, art exhibitions, auctions and prizefights assisted in providing needed funds. Poet Emma Lazarus wrote her famous sonnet “The New Colossus” in 1883 for the art and literary auction to raise funds for the Statue’s pedestal. Meanwhile in France, Bartholdi required the assistance of an engineer to address structural issues associated with designing such a colossal copper sculpture. Alexandre Gustave Eiffel (designer of the Eiffel Tower) was commissioned to design the massive iron pylon and secondary skeletal framework which allows the Statue’s copper skin to move independently yet stand upright Back in America, fundraising for the pedestal was going particularly slowly, so Joseph Pulitzer opened up the editorial pages of his newspaper, “The World,” to support the fund raising effort. Pulitzer used his newspaper to criticize both the rich who had failed to finance the pedestal construction and the middle class who were content to rely upon the wealthy to provide the funds. Pulitzer’s campaign of harsh criticism was successful in motivating the people of America to donate. Architect Richard Morris Hunt designed the Statue of Liberty’s granite pedestal in 1884, donating his fee to help fund the Statue. Financing for the pedestal was completed in August 1885, and pedestal construction was finished in April 1886. The Statue was completed in France in July 1884 and arrived in New York Harbor in June 1885 onboard the French frigate “Isere.” In transit, the Statue was reduced to 350 individual pieces and packed in 214 crates. The Statue was reassembled on her new pedestal in four months’ time. On October 28, 1886, President Grover Cleveland oversaw the dedication of the Statue of Liberty in front of thousands of spectators. She was a centennial gift ten years late  
6. The word “who” in paragraph 2 refers to ______

Choose the best answer:
The street/ not/ look/ attractive/ because/ there/ be/ a lot of/ rubbish.

Read the following passage and choose the best answer (A, B, C, D):
Australia has a well-organized and well-structured education system. The education starts at the age of five or six, but it may differ by a narrow margin between states. It starts with the preschool education which is not compulsory and can be offered within a school or separately. The primary and secondary school encompasses the compulsory education for Australians. There are a large number of primary and high school across the country with most of them being public schools. It is estimated that public schools amount to 60% of scholars as opposed to 40% in private settings. All these education providers must be licensed by the government and must fulfill certain requirements including infrastructure and teaching. Universities, on the other hand, are mainly public institutions. The Australian education system has established a standard curriculum so all scholars will be given the same quality of education. Despite there may be some states at which this curriculum is modified a bit, but the change is not that significant. The actual curriculum set  out in Australia education system is based on important abilities one must have in his life: Literacy, Numeracy, Information and communication technology, Critical and creative thinking, personal and social capability, ethical understanding, intercultural understanding. Vocational and Technical schools prepare students that want to skip the university and want to move directly to the job market. Actually, here it stands the difference between universities and colleges: the Vocational and Technical Schools are more oriented in teaching practical skills while university courses are mainly theory-based to lead students to different academic careers. There are hundreds of other schools out there that provide technical and further education (TAFE) and vocational education and training (VET). These schools offer short courses, certificates I through IV, diplomas, and advanced diplomas. They focus on training their students in a particular vocation or just to help their students get out into the workplace. These schools offer a wide variety of courses and qualifications attained by these courses can lead to different career pathways to follow afterward  Australian higher education modernity and reputation relies on a huge number of educational providers including universities and different training organizations. Currently, there are 43 universities across the country. The vast majority of universities are public except two private universities. The world-class teaching offered is surely undisputed. Seven Australian universities are traditionally found at the top 100 best universities in the world which is a sufficient indicator to highlight their quality. Besides universities, more than 5,000 training organizations are registered and accredited. Actual figures show that the number of enrolled students is around 3.8 million with international students sharing more than half a million. There are also 3 self-accrediting higher education institutions. Furthermore, dozens of smaller schools do not grant any degrees or have an accreditation – these are private schools that focus on theology, business, information technology, natural therapies, hospitality, health, law, and accounting.  
7. The word “undisputed” in paragraph 4 could be best replaced by ________

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions:
The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archaeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.
One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for their crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.
Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

The hydraulic system of reservoirs     .

Read the following passage and choose the best answer (A, B, C, D):
One thing adults, and especially parents, don’t always understand is that friendships  are a key part of teenagers’ lives. As young people grow up and become more independent, the more (1) ____ to spend time out with friends. One typical problem is when parents decide to move to a new area because of work. This can be a very upsetting (2) ____ for teenagers. They are bound to feel lonely and this is likely to make them miserable, too. It may take some time for them to develop new relationships, so parents should be patient. They should also try to be (3) ____ about how much time teenagers spend with their friends. It is natural for teenagers to want to be out when they can. If they hear only criticism of their behaviour, it is likely to lead to a lot of (4) ____. Encourage teenagers to develop friendships with people they have something in common with. And remember that (5) ____ is the best policy when it comes to talking to teens on any subjects at all, including their friendships

Rewrite the sentence:
The film is not exciting enough for me to see.