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Some animal behaviorists argue that certain animals can remember past events, anticipate future ones, make plans and choices, and coordinate activities within a group. These scientists, however, are cautious about the extent to which animals can be credited with conscious   processing.
Explanations of animal behavior that leave out any sort of consciousness at all and ascribe actions entirely to instinct leave many questions unanswered. One example of such unexplained behavior: Honeybees communicate the sources of nectar to one another by doing a dance in a figure-eight pattern. The orientation of the dance conveys the position of the food relative to the sun's position in the sky, and the speed of the dance tells how  far  the food source is from  the  hive. Most researchers assume that the ability to perform and  encode the dance is innate and  shows no special intelligence. But in one study, when experimenters kept changing the site of     the food source, each time moving the food 25 percent father from the previous site, foraging honeybees began to anticipate where the food source would appear next. When the researchers arrived at the new location, they would find the bees circling the spot, waiting for their food. No one has yet explained how bees, whose brains weigh four ten-thousandths of an  ounce,  could  have inferred the location of the new  site.
Other behaviors that may indicate some cognition include tool use. Many animals, like the otter who uses a stone to crack mussel shells, are capable of using objects in the natural environment as rudimentary tools. One researcher has found that mother  chimpanzees  occasionally show their young how to use tools to open hard nuts. In one study, chimpanzees compared two pairs of food wells containing chocolate chips. One pair might contain, say, five chips and three chips, the other four chips and three chips. Allowed to choose which pair they wanted, the  chimpanzees  almost always chose the  one with the higher total, showing some sort  of summing ability. Other chimpanzees have learned to use numerals to label quantities of items and do simple sums.

Scientists concluded from the experiment with chimpanzees and chocolate chips that chimpanzees ....................

Aging is the process of growing old. It occurs eventually in every living thing provided, of course, that an illness or accident does not kill it prematurely. The most familiar outward signs of aging may be seen in old people, such as the graying of the hair and the wrinkling of the skin. Signs of aging in a pot dog or cat include loss of playfulness and energy, a decline in hearing and eyesight, or even a slight graying of the coat. Plants age too, but the signs are much harder to detect.
Most body parts grow bigger and stronger, and function more efficiently during childhood. They reach their peak at the time of maturity, or early adulthood. After that, they begin to decline. Bones, for example, gradually become lighter and more brittle. In the aged, the joints between the bones also become rigid and more inflexible. This can make moving very painful.
All the major organs of the body show signs of aging. The brain, for example, works less efficiently, and even gets smaller in size. Thinking processes of all sorts are slowed  down. Old people often have trouble in remembering recent events.
One of the most serious changes of old ago occurs in the arteries, the blood vessels that lead from the heart. They become thickened and constricted, allowing less blood to flow to  the rest of body. This condition accounts, directly or indirectly, for many of the diseases of the aged. It may, for example, result In heart attack.
Aging is not a uniform process. Different parts of the body wear out at different rates. There are great differences among people in their rate of aging. Even the cells of the body differ in the way they age. The majority of cells are capable of reproducing themselves many times during the course of a lifetime. Nerve cells and muscle fibers can never be replaced  once they wear out.
Gerontologists - scientists who study the process of aging - believe this wearing out of the body is controlled by a built-in biological time-clock. They are trying to discover how this clock works so that they can slow down the process. This could give man a longer life and a great number of productive years.

When does the human body begin to lose vigor and the ability to function efficiently?

Read the following passage and choose the best answer for each blank.

What is the Association of Southeast Asian Nations (ASEAN) and what is its purpose? The Association of Southeast Asian Nations (ASEAN) is a multilateral organization which was (26) _____ to give Southeast Asian states a forum to communicate (27) _____ each other. Since the region had a long colonial past and a history of endemic warfare, there has never been much peaceful and constructive (28) _____ between kings, presidents and other officials. A neutral forum was, (29) _____, a very useful development for all of those countries.ASEAN was formed as a result of the Bangkok (30) _____ of 1967 and initially had five members: Thailand, Malaysia, Indonesia, (31) _____ Philippines and Singapore. Brunei (32) _____ joined in 1984 after it had won independence from Britain. Vietnam became the seventh member of the group, officially joining in 1995. (33) _____ several years of negotiation, Myanmar and Laos joined in 1997 and the final member of the ten, Cambodia, joined in 1999. The only (34) _______state in Southeast Asia which is not a member of ASEAN is now East Timor. It is still (35) _____ vulnerable and fragile to be able to participate for the foreseeable future.

(32) _____

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 questions:
Humans are bringing about another global-scale change in the atmosphere: the increase in what are called greenhouse gases. Like glass in a greenhouse, these gases admit the Sun's light but tend to reflect back downward the heat that is radiated from the ground below, trapping heat in the Earth's atmosphere. This process is known as the greenhouse effect. Carbon dioxide is the most significant of these gases – there is 25 percent more carbon dioxide in the atmosphere today than there was a century ago, the result of our burning coal and fuels derived from oil. Methane, nitrous oxide, and CFCs are greenhouse gases as well.
Scientists predict that increases in these gases in the atmosphere will make the Earth a warmer place. They expect a global rise in average temperature somewhere between 1.0 and 3.5 degrees Celsius in the next century. Average temperatures have in fact been rising and the years from 1987 to 1997 were the warmest years on record. Some scientists are reluctant to say that global warming has actually begun because climate naturally varies from year to year and decade to decade, and it takes many years of records to be sure of a fundamental change. There is little disagreement, though, that global warming is looming.
Global warming will have different effects in different regions. A warmed world is expected to have more extreme weather, with more rain during wet periods, longer droughts, and more powerful storms. Although the effects of future climate changes are unknown, some predict that exaggerated weather conditions may translate into better agricultural yields in areas such as the western United States, where temperature and rainfall are expected to increase, while dramatic decreases in rainfall may lead to severe droughts and plunging agricultural yields in parts of Africa, for example.
Warmer temperatures are expected to partially melt the polar ice caps, leading to a projected sea level rise of 50 centimeters by the year 2050. A sea level rise of this magnitude would flood coastal cities, force people to abandon low-lying islands, and completely inundate coastal wetlands. Diseases like malaria, which at present are primarily found in the tropics, may become more common in the regions of the globe between the tropics and the polar regions, called the temperate zones. For many of the world's plant species, and for animal species that are not easily able to shift their territories as their habitat grows warmer, climate change may bring extinction.

What may be the benefit of exaggerated weather conditions for the western United States?

Brown bears are found in Alaska and western Canada. They are first cousins of the grizzly, each belonging to the species Ursus arctos. The chief difference in them is size, as brown bears on the average are slightly larger. A full-grown male may weigh 1,500 pounds and stand 9 to 10 feet tall. Like bears everywhere they are creatures of habit that tread the same trails year after year. Brown bears have three gaits: an even, deliberate one that takes them over rough or boggy ground at a steady clip, a quick shuffle, and a fast gallop. They are not only surprisingly fast, but also, for such huge beasts, amazingly inclines. Fishing the streams in summer, they pounce on swift-moving salmon and snatch them with almost simultaneous movements of their paws and mouths. Brown bears are excellent swimmers and love to loll and wallow in the water on warm days. They are also curious and playful. Most manifest a fear of humans, but Alaskans prefer not to test these creatures and usually carry noisemakers of some kind to warn the bears of their presence.

Which of the following can be implied from the passage?

Although they are an inexpensive supplier of vitamins, minerals, and high-quality protein, eggs also contain  a high  level of blood cholesterol, one of the major causes of heart diseases. One egg   yolk, in fact, contains a little more than two-thirds of the suggested daily cholesterol limit. This knowledge has caused egg sales to plummet in recent years, which in turn has brought about the development of several alternatives to eating regular eggs. One alternative is to eat substitute eggs. These egg substitutes are not really eggs, but they look somewhat like eggs when  they are  cooked. They have the advantage of having low cholesterol rates, and they can be  scrambled  or  used  in baking. One disadvantage, however, is that they are not good for frying, poaching,  or boiling.  A second alternative to regular eggs is a new type of egg, sometimes called 'designer' eggs. These eggs  are produced by hens that are fed low-fat diets consisting of Ingredients such as canola oil, flax, and rice bran. In spite of their diets, however, these hens produce eggs that contain the same amount of cholesterol as regular eggs. Yet, the producers of these eggs claim that eating their eggs will not raise the blood cholesterol in  humans.
Egg producers  claim  that their product has been  portrayed unfairly. They cite scientific studies  to back up their claim. And, in fact, studies on the relationship between eggs and human cholesterol levels have brought mixed results. It may be that it is not the type of egg that is the main determinant   of cholesterol but the person who is eating the eggs. Some people may be  more  sensitive  to  cholesterol derived from food than other people. In fact, there is evidence that certain dietary fats stimulate the body's production of blood cholesterol. Consequently, while it still makes sense to limit one's intake of eggs, even designer eggs, it seems that doing this without regulating dietary fat will probably not help reduce the blood cholesterol  level.

The word 'portrayed' could best be replaced by which of the   following?

New surveys suggest that the technological tools we use to make our lives easier are  killing our leisure time. We are working longer hours, taking fewer and shorter vacations (and when we do go away, we take our cell phones, PDAs, and laptops along). And, we are more stressed than ever as increased use of e-mail, voice mail, cell phones, and the Internet is destroying any idea of  privacy and leisure.
Since the Industrial Revolution, people have assumed that new labor-saving devices would free them from the burdens of the workplace and give them more time to grow intellectually, creatively, and socially -exploring the arts, keeping up with current events, spending more time with friends and family, and even just ''goofing off''.
But here we are at the start of the 21st century, enjoying one of the greatest technological boom times in human history, and nothing could be further from the truth. The very tools that were supposed to liberate us have bound us to our work and study in ways that were inconceivable just a few years ago. It would seem that technology almost never does what we expect.
In 'the old days', the lines between work and leisure time were markedly clearer. People  left their offices at a predictable time, were often completely disconnected from and out of touch with their jobs as they traveled to and from work, and were off-duty once they were home. That is no longer true. In today's highly competitive job market, employers demand increased productivity, expecting workers to put in longer hours and to keep in touch almost constantly via fax, cell phones, e-mail, or other communications devices. As a result, employees feel the need to check in on what is going on at the office, oven on days off. They feel pressured to work after hours just to catch up on everything they have to do. Workers work harder and longer, change their work tasks more frequently, and have more and more reasons to worry about job security.
Bosses, colleagues, family members, lovers, and friends expect instant responses to voice mail and e-mail messages. Even college students have become bound to their desks by an environment in which faculty, friends, and other members of the college community increasingly do their work online. Studies of time spent on instant messaging services would probably show staggering use.
This is not what technology was supposed to be doing for us. Now technologies, from genetic research to the Internet, offer all sorts of benefits and opportunities. But, when new tools make life more difficult and stressful rather than easier and more meaningful - and we are, as a society, barely conscious of it - then something has gone seriously awry, both with our expectations for technology and our understanding of how it should benefit us.

It can be inferred from the fourth paragraph that ........................

Fill in each numbered blank with one suitable word or phrase.

ASEAN Handicraft Promotion and Development Association (AHPADA) was established as a result of a Workshop on Handicraft for Export which was (1) _____ by the Royal Thai Government in February 1981 in Bangkok. AHPADA was formed as a forum for both the government and private sectors that are concerned with meeting and complementing each other in the promotion and development of handicrafts (2) _____. AHPADA is affiliated to the ASEAN and the World Craft Council. The (3) _____ members were Thailand, Malaysia, the Philippines and Indonesia. Singapore and Brunei join in a little (4) _____. Cambodia, Lao, Myanmar and Vietnam joined in September 1999.AHPADA's objectives are: To take common approach to develop and promote the marketing of crafts (5) _____ and outside the ASEAN Region. To operate as a main point of promotion of ASEAN handicrafts and raw (6) _____ required-for production, trade fairs and exhibitions. To strengthen and improve the status of craftspeople. To create employment opportunities especially in the rural areas. To (7) _____ traditional craft skills within the context of conservation of cultural heritage. To educate and create awareness and appreciation of the authentic handicrafts of ASEAN Countries. And to build up an archive of ASEAN CRAFT information.

With the recent economic downturn in (8) _____ ASEAN Countries, AHPADA's objectives are more relevant than they have ever been before. Most producers are among the rural areas and (9) _____ majority of them are very small entrepreneurs. AHPADA works at both national level through the national focal points and at the international level through the Board of AHPADA and the Regional Secretariat which is permanently based in Bangkok, Thailand. (10) _____ 1981 AHPADA has been able to act as a catalyst and initiators in the promotion and development of ASEAN CRAFTS through seminars, workshops and exhibitions, often in partnership with several multinational and international organizations.

(1) _____

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks.

Nowadays, everybody knows Apples and (26) ____ everybody knows that the company was founded by Steve Jobs, an American inventor and entrepreneur. He is widely recognized as a pioneer in the field of microcomputer revolution. He helped design the first Macintosh computer, transformed a small computer graphics company into Pixar, the company behind Toy Story and The Monster Inc.

His countercultural lifestyle and philosophy was a product of the time and place of his (27) ____. Jobs was adopted and raised in San Francisco Bay Area during the 1960s. In 1972, Jobs attended Reed College from which he (28) ____ in next to no time. Jobs co-founded Apple in 1976 in order to sell Apple I personal computer. At that moment, he might hardly imagine that only a year later the company tasted impressive victory with Apple II, one of the first highly successful mass-produced personal computers. (29) ____, in 1985, following a long power struggle, Jobs was forced out of Apple. After leaving Apple, Jobs took a few of its members with him to found NeXT, a computer development company which was then bought by Apple. The purchase allowed Jobs to become the company's CEO once again.

Steve Jobs died in 2011 after battling with pancreatic cancer (30) ____ nearly a decade. Millions first learned of Jobs’ death on a device which had been invented by himself.

29................

Shyness may not seem to be a serious complaint, but for some who suffer from it, it can become unbearable. Even talking to a small group of people you know can seem like an ordeal- it can feel as if you’ve been asked to give a speech on a topic you know very little about to a number of experts. You start to feel hot and shaky, your heart beats faster, your knees feel weak, you begin to stutter and the whole experience seems to last forever.
The fact of the matter is that shyness is something we often recognize in others: “blushing” is one of the more visible signs, for example. Yet we don’t judge someone harshly because of this. But shyness does mean that you are harder to approach, so you become more  isolated. As one shy person put it, “It’s like being in a prison, and it’s very hard to break out.”
Experts on the subject have come up with various possible solutions, and one has been singled out as being the key to success- namely, finding an interest in common with the other people. Spending a lot of time on the sidelines watching other people and envying them because they are much more outgoing doesn’t help; remembering that some of those people you most envy are probably shy themselves, does. The secret is how you deal with it. And experts have come up with four things you can do today to help. Firstly, you can start by listening to other people. You will find yourself getting interested in what they’re talking about and asking questions- and before you know it, you’ll be having a conversation.
Secondly, you could try asking neighbors if you can walk their dog. Like children, pets can be excellent icebreakers for conversations with passers-by. Thirdly, try joining a class to learn something like tap-dancing or flamenco, where people are likely to laugh a lot. You’ll feel relaxed, and also you’ll be much too busy concentrating on what you are doing to feel shy. Lastly, try telling yourself that it doesn’t matter if you say or do something silly. Most people make a fool of themselves every so often- and it’s not the end of the world if you do!

What do experts believe is the essential measure to be taken?

Although most universities in the United States are on a semester system, which offers classes in the fall and spring, some schools observe a quarter system comprised of fall, winter, spring, and summer quarters. The academic year, September to June, is divided into three quarters of eleven weeks each beginning in September, January, and March: the summer quarter, June to August, is composed of shorter sessions of vary length.There are several advantages and disadvantages to the quarter system. On the plus side, students who wish to complete their degrees in less than the customary four years may take advantage of the opportunity to study year round by enrolling in all four quarters. In addition, although most students begin their programs in the fall quarter, they may enter at the beginning of any other quarters. Finally, since the physical facilities are kept in operation year round, the resources are used effectively to serve the greatest number of students. But there are several disadvantages as well. Many faculty complain that eleven-week term is simply not enough for them to cover the material required by most college coursed. Students also find it difficult to complete the assignments in such a short period of time.In order to combine the advantages of the quarter system with those of the semester system some colleges and universities have instituted a three-term trimester system. In fourteen weeks, faculty and students have more time to cover material and finish course requirements, but the additional term provides options for admission during the year and accelerates the degree programs for those students who wish to graduate early.

A semester system______.

Choose the best answer to complete the sentence.

_______ in Rome than he was kidnapped

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 questions.

   Many flowering plants woo insect pollinators and gently direct them to their most fertile blossoms by changing the color of individual flowers from day to day. Through color cues, the plant signals to the insect that it would be better off visiting one flower on its bush than another. The particular hue tells the pollinator that the flower is full of far more pollen than are neighboring blooms. That nectar-rich flower also happens to be fertile and ready to disperse its pollen or to receive pollen the insect has picked up from another flower. Plants do not have to spend precious resources maintaining reservoirs of nectar in all their flowers. Thus, the color-coded communication system benefits both plants and insects.

   For example, on the lantana plant, a flower starts out on the first day as yellow, when it is rich with pollen and nectar. Influenced by an as-yet-unidentified environmental signal, the flower changes color by triggering the production of the pigment anthromyacin. It turns orange on the second day and red on the third. By the third day, it has no pollen to offer insects and is no longer fertile. On any given lantana bush, only 10 to 15 per cent of the blossoms are likely to be yellow and fertile. But in tests measuring the responsiveness of butterflies, it was discovered that the insects visited the yellow flowers at least 100 times more than would be expected from haphazard visitation. Experiments with paper flowers and painted flowers demonstrated that the butterflies were responding to color cues rather than, say, the scent of the nectar.

   In other types of plants, blossoms change from white to red, others from yellow to red, and so on. These color changes have been observed in some 74 families of plants.

The word “triggering” is closest in meaning to __________

A book has just been published to help parents to deal with their children's naughty behavior at home. The author, Dr James Bruno, says that the first positive discipline technique is for parents to remain (21)_____ because nervous parents don't get good results. Parents who often (22)____ their temper find that their children stop taking any notice of them. When parents yell at their children to make them (23)____ an order, children often act as if they did not hear them,The second challenge is to know how to correct bad behavior in an effective way. (24)_____ children by preventing them from watching their favorite TV program is not an ideal solution. Nor is telling them off when their friends are present. Dr Bruno believes parents should (25)____ clear rules for children to follow. If children refuse to follow these, they know they will be disciplined

(22)....................................

Choose the option among A, B, C or D that best fits the blank space in the following passage:

"Cambodia, country in Southeast Asia, also known (1)…… Kâmpuchéa. More than a thousand years ago, Cambodia was the center of the Khmer (Cambodian) kingdom of Angkor, a great empire (2)……  dominated Southeast Asia for 600 years. A monarchy since ancient (3)…… , Cambodia was a French protectorate from 1863 to 1953. A republic replaced the monarchy in 1970, and in 1975 a Communist regime known as the Khmer Rouge (4)…. power, naming the country Democratic Kâmpuchéa. The Khmer Rouge’s brutal repression and radical socialist (5) ……  devastated Cambodia’s society and economy. In 1979 anti-Khmer Rouge Communist forces from Vietnam and Cambodia overthrew the Khmer Rouge and established a more moderate socialist State. In 1993 a new constitution restored the (6) …... Cambodia’s official name is the Kingdom of Cambodia.
 Cambodia is (7)….. . on the northeast by Laos, on the east and southeast by Vietnam, on the west and northwest by Thailand, and on the southwest by the Gulf of Thailand (Siam). The country’s Capital and largest city is Phnom Penh. Cambodia’s Principal lake, the Tônlé Sap (Great Lake), is the largest in Southeast Asia. From the northwest, the Tônlé Sap drains (8)…..  the Mekong via the Tônlé Sab River, (9)…… the Mekong at Phnom Penh. Each year during the monsoon season (approximately May to October), the waters of the Mekong (10)….. and reverse the flow of the Tônlé Sab. The lake then expands dramatically, flooding the provinces along its banks."

8. From the northwest, the Tônlé Sap drains (8)…..  the Mekong via the Tônlé Sab River,

Commuting is the practice of travelling a long distance to a town or city to work each day, and then travelling home again in the evening. The word commuting comes from commutation ticket, a US rail ticket for repeated journeys, called a season ticket in Britain. Regular travellers are called commuters.
The US has many commuters. A few, mostly on the East Coast commute by train or subway, but most depend on the car. Some leave home very early to avoid the traffic jams, and sleep in their cars until their office opens. Many people accept a long trip to work so that they can live in quiet "bedroom communities" away from the city, but another reason is 'white flight'. In the 1960s most cities began to desegregate their schools, so that there were no longer separate schools  for  white and black children. Many white families did not want to send their children to desegregated schools, so they moved to the suburbs, which have their own schools, and where, for various reasons, few black people live.
Millions of people in Britain commute by car or train. Some spend two or three hours a day travelling, so that they and their families can live in suburbia or in the countryside. Cities are surrounded by commuter belts. Part of the commuter belt around London is called the stock broker belt because it contains houses where rich business people live. Some places are becoming dormitory towns, because people sleep there but take little part in local activities.
Most commuters travel to and from work at the same time, causing the morning and evening rush hours, when buses and trains are crowded and there are traffic jams on the roads. Commuters on trains rarely talk to each other and spend their journey reading, sleeping or using their mobile phones, though this is not popular with other passengers. Increasing numbers of people now work at home some days of the week, linked to their offices by computer, a practice called telecommuting.
Cities in both Britain and the US are trying to reduce the number of cars conning into town each day. Some companies encourage car pooling (called car sharing in Britain), an arrangement for people who live and work near each other to travel together. Some Us cities have a public service that helps such people to contact each other, and traffic lanes are reserved for car-pool vehicles. But cars and petrol/gas are cheap in the US, and many people prefer to drive alone because it gives them more freedom. In Britain many cities have park-and-rids schemes, car parks on the edge of the city from which buses take drivers into the centre.

The word 'repeated' in paragraph 1 most probably means  .........................

We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin - a behavioural biologist - describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves. Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work.
Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of'sleep debt'.
Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world's most popular drug, helps to keep us awake. 75% of the world's population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.
What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious Implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on'night call',  and may got less than three hours'sleep. Lack of sleep can seriously  impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn't As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible, Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night

The word "which" in the third paragraph refers to .....................

We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin - a behavioural biologist - describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves. Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work.
Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of'sleep debt'.
Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world's most popular drug, helps to keep us awake. 75% of the world's population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.
What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious Implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on'night call',  and may got less than three hours'sleep. Lack of sleep can seriously  impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn't As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible, Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night

Which of the following would the writer of the passage approve of?

Read the passage carefully and choose the correct answer

On 8 August 1967, five leaders - the Foreign Ministers of Indonesia, Malaysia, the Philippines, Singapore and Thailand- sat down together in the main hall of the Department of Foreign Affairs building in Bangkok, Thailand and signed a document. By virtue of that document, the Association of Southeast Asian Nations (ASEAN) was born. The five Foreign Ministers who signed it have been considered as the founders of probably the most successful intergovernmental organization in the developing world today. The document that they signed would be known as the ASEAN Declaration.

It is a short, simply-worded document containing just five articles. It declares the establishment of an Association for Regional Cooperation among the Countries of Southeast Asia to be known as the Association of Southeast Asian Nations (ASEAN) and spells out the aims and purposes of that Association. These aims and purposes are about the cooperation in economy, society, culture, techniques, education and other fields, and in the promotion of regional peace and stability through abiding respect for justice and the principles of the United Nations Charter. It stipulates that the Association will be open for participation by all States in the Southeast Asian region subscribing to its aims, principles and purposes. It proclaims ASEAN as representing the collective will of the nations of Southeast Asia to bind themselves together in friendship and cooperation and, through joint efforts and sacrifices, secure for their peoples and for posterity the blessings of peace, freedom and prosperity. The goal of ASEAN, then, is to create, not to destroy.

The original ASEAN logo presented five brown sheaves of rice stalks, one for each founding member. Beneath the sheaves is the legend "ASEAN" in blue. These are set on a field of yellow encircled by a blue border. Brown stands for strength and stability, yellow for prosperity and blue for the spirit of cordiality in which ASEAN affairs are conducted. When ASEAN celebrated its 30^th Anniversary in 1997, the sheaves on the logo had increased to ten -representing all ten countries of Southeast Asia and reflecting the colors of the flags of all of them. In a very real sense, ASEAN and Southeast Asia will be one and the same, just as the founders had envisioned.

The pronoun "it" in the first paragraph refers to ________.

Read the following passage and choose the best answer for each blank.

What is the Association of Southeast Asian Nations (ASEAN) and what is its purpose? The Association of Southeast Asian Nations (ASEAN) is a multilateral organization which was (26) _____ to give Southeast Asian states a forum to communicate (27) _____ each other. Since the region had a long colonial past and a history of endemic warfare, there has never been much peaceful and constructive (28) _____ between kings, presidents and other officials. A neutral forum was, (29) _____, a very useful development for all of those countries.ASEAN was formed as a result of the Bangkok (30) _____ of 1967 and initially had five members: Thailand, Malaysia, Indonesia, (31) _____ Philippines and Singapore. Brunei (32) _____ joined in 1984 after it had won independence from Britain. Vietnam became the seventh member of the group, officially joining in 1995. (33) _____ several years of negotiation, Myanmar and Laos joined in 1997 and the final member of the ten, Cambodia, joined in 1999. The only (34) _______state in Southeast Asia which is not a member of ASEAN is now East Timor. It is still (35) _____ vulnerable and fragile to be able to participate for the foreseeable future.

(31) _____