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

"Many parents believe that they should begin to teach their children to read when they are (1)….. more than toddlers. This is fine if the child shows a real interest but (2)…… a child could be counter-productive if he isn’t ready. Wise parents will have a (3)….. attitude and take the lead from their child. What they should provide is a selection of (4)….. toys, books and other activities. Nowadays there is a plenty of good (5)….. available for young children, and of course, seeing plenty of books in use about the house will also (6)…..  them to read.
 Of course, books are no longer the only (7)….. of stories and information. There Js also a huge range of videos, which can (8)…. And extend the pleasure a child finds in a book and are (9)… valuable in helping to increase vocabulary and concentration. Television gets a bad (10)…. as far as children are concerned, mainly because too many children spend too much time watching programmes not intended for their age group."

1. Many parents believe that they should begin to teach their children to read when they are (1)….. more than toddlers.

Many of the most damaging and life-threaling 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.

What does the passage mainly discuss?

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.

   One day in 1924, five men who were camping in the Cascade Mountains of Washington saw a group of huge apelike creatures coming out of the woods. They hurried back to their cabin and locked themselves inside. While they were in, the creatures attacked them by throwing rocks against the walls of the cabin.

   After several hours, these strange hairy giants went back into the woods. After this incident the men returned to the town and told the people of their adventure. However, only a few people accepted their story. These were the people who remembered hearing tales about footprints of an animal that walked like a human being.

   The five men, however, were not the first people to have seen these creatures called Bigfoot. Long before their experience, local Native Americans were certain that a race of apelike animals had been living in the neighboring mountain for centuries. They called these creatures Sasquatch.

   In 1958, workmen, who were building a road through the jungles of Northern California often found huge footprints in the earth around their camp.

   Then in 1967, Roger Patterson, a man who was interested in finding Bigfoot went into the Northern California jungles with a friend. While riding, they were suddenly thrown off from their horses. Patterson saw a tall apelike animal standing not far away. He managed to shoot seven rolls of film of the hairy creature before the animal disappeared in the hushes. when Patterson's film was shown to the public, not many people believed his story.

   In another incident, Richard Brown, a music teacher and also an experienced hunter spotted a similar creature. He saw the animal clearly through the telescopic lens of his rifle. He said the creature looked more like a human than an animal.

   Later many other people also found deep footprints in the same area. In spite of regular reports of sightings and footprints, most experts still do not believe that Bigfoot really exists.

The BEST title for this passage would be

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 1 to 5.
Hospitality
Hospitality - looking after visitors - is universal but in different cultures hostsare (1)       to receive guests in different ways.
In much of the ancient world it was the custom to provide passing travellers with food and water. Today some old customs have (2)      . In a traditional Japanese household, if a guest admires a particular object in the house, the host will want to give it to the guest straight away. And in parts of Russia guests are greeted with bread and salt on a special cloth.The guest is (3)        to kiss them and hand them back to the host. Sometimes the guest breaks off a small piece of bread, dips it in the salt and eats it.
In some countries, when foreign guests arrive from abroad, they may feel they have been given a particularly (4)        meal. But this is probably because the host politely offers more and more food and drink and the guest is too embarrassed to (5)      anything down.
(1)....................

Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks from 46 to 50.
University researchers have taken samples from a preserved dodo specimen in an (46)         to uncover the extinct bird‟s family tree. They worked with the British Natural History Museum to collect and study genetic material from large number of specimens: a preserved dodo, the extinct solitaire bird, and 35 kind of living pigeons and doves. Their analysis (47)           the doo and the solitaire to be close relatives with the Nicobar pigeon, their nearest living relative. The dodo lived on Mauritius in the Indian Ocean. It was a flightless bird, bigger than a turkey. By 1681, all dodos had been (48)      by hungry sailors. The    solitaire, which looked a bit like a dodo, had gone the same way by 1800. By extracting short pieces of the dodo‟s DNA and (49)        these with the DNA of living birds, the scientists were able to deduce when the dodo evolved away from its relatives into a separate entity. The scientists can now (50)       assume that the dodo developed its distinctive appearance and features as a result of its geographical isolation. They are now convinced that it separated from the solitaire about 25 million years ago, long before Mauritius became an island.
(47).................

Read the text below and decide which answer (A,B,C, or D) best fits each space.
Postsecondary institutions and private schools are corporations under U.S. law.  They are approved to operate as non-profit, for-profit, or public corporations (1)  _______ education and training. Increasingly, state authorities are requiring  approved educational providers to apply (2) _______ and receive accreditation  as a condition of final and continued approval. 
As corporate entities, U.S. institutions are internally self-governing and are (3)  _______ to make property, facilities, equipment, and utilities transactions; make  their own personnel decisions; decide whom to admit to study and to graduate;  (4) _______ their own funds from outside sources; enter into contracts and  compete for grants; and do most of the other things that corporations do.  Institutions compete (5) _______ one another for students, research funding,  faculty, and other benefits. Public institutions may compete within the same  state or territory for budget appropriations. It is the corporate nature of  institutions and the competition within the system that (6) _______ Americans  to refer to the concept of the educational or academic marketplace - an important distinctive element of the way U.S. education is organized. 
Some institutions are governed (7) _______ under multi-campus arrangements.  These include most local public schools (governed by school districts) and many  state community college and university systems. Whether single- or multi campus, institutional corporations (8) _______ by boards of citizens, both  alumni and non- alumni, who are ultimately responsible for all operations. They  appoint senior (9) _______, such as principals, headmasters, presidents, and  deans; and approve the actions taken (10) ______ their name. 

7.......................

Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks from 6 to 10.
Some years ago, my daughter was studying English at a university on the south coast. One evening, she phoned to (6)_________ me that what she really wanted to do was a travel round the world, (7)_________ she was looking into the possibility of working in another country. She had seen several advertisements in the paper for student teachers of English abroad, and she was interested in one in Italy, (8)_________ she was desperate to visit.
She decided that this would be a good way to achieve her ambition, so she was writing to apply for the job. The reply (9)_________ a long time to arrive, but eventually she received a letter asking if she would go for an interview in London the following week. She was so excited that she immediately got in touch with the school owner and agree to attend the interview . She was determined that nothing would prevent her (10)_________ doing what she had set out to do.
(9)...................

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
On April 3, 1972, a man came out of the Hilton hotel in Manhattan and started walking down the street. He stopped, (31) his hand with a strange object in it, put it to his ear and started to talk into it. This was the beginning of mobile phone (32) , more than 30 years ago. That man was Motorola's project manager, Martin Cooper, who was (33) his 34th birthday that day. The strange object was the first mobile phone, which was nicknamed “the shoe” because of its  unusual (34)  .Mr. Cooper had gone to New York to introduce the new phone. The first call he made was to his rival, Joe Engel at AT&T's research centre. Engel was responsible for the development of the radiophones for cars. "I called him and said that I was talking on a real mobile phone (35)         I was holding in my hand," said Cooper. "I don't remember what he said in reply, but I'm sure he wasn't happy." The quality of the call was very good, because although New York had only one base station at that time, it was being used by only one user - Martin Cooper.
(31).....................

Course numbers are an indication of which courses are to various categories of students at the University. Undergraduate courses with the numbers 100 or 200 are generally introductory courses appropriate for freshmen or sophomores, whereas courses with the numbers 300 or 400 often have prerequisites and are often to juniors and seniors only. Courses with the numbers 800 or above are open only to graduate students. Certain graduate courses, generally those devoted to introductory material, are numbered 400 for undergraduate students who qualify to take them and 600 for graduate students. Courses designed for students seeking a professional degree carry a 500 number for undergraduate students and a 700 number for graduate students. Courses numbered 99 or below are special interest courses that do not carry academic credit. If students elect to take a special interest course, it will not count toward the number of hours needed to complete graduation requirements.
Full - time undergraduate student is expected to take courses that total twelve to eighteen credit hours. A full-time graduate student is expected to take courses that total ten to sixteen credit hours. Student holding assistantships are expected to enroll for proportionately fewer hours. A part - time graduate may register for minimum of three credit hours. An overload, that is, more than the maximum number of hours, may be taken with the approval of an academic advisor. To register for an overload, students must submit the appropriate approval form when registering. Overloads above 24 hours will not be approved under any circumstances.

The word "those" in paragraph 1 refers to_________ .

Read the following passage and choose the correct answer to each of the questions.

The word "robot" first appeared in a 1921 stage play by Czech writer Karel Capek. In the play, a man makes a machine that can think, which he calls a robot and which ends up killing its owner. In the 1940s, the American science fiction writer, Isaac Asimov, wrote a series of stories about robots and invented the term 'robotics', the science of robots. Meanwhile, in the real world, the first robots were developed by an engineer, Joseph F. Engelberger, and an inventor, George C. Devol. Together they started Unimation, a manufacturing company that produced the first real robot in 1961, called the Unimate. Robots of this type were installed at a General Motors automobile plant and proved to be a success. They worked reliably and saved money for General Motors, so other companies were soon acquiring robots as well.

These industrial robots were nothing like the terrifying creatures that can often be seen in science fiction films. In fact, these robots looked and behaved nothing like humans. They were simply pieces of computer-controlled machines, with metal "arms" or "hands". Since they were made of metal, they could perform certain jobs that were difficult or dangerous for humans, particularly jobs that involve high heat. And since robots were tireless and never got hungry, sleepy, or distracted, they were useful for tasks that would be tiring or boring for humans. Industrial robots have been improved over the years, and today they are used in many factories around the world. Though the use of robots has meant the loss of some jobs, at the same time other jobs have been created in the design, development, and production of the robots.

Outside of industry, robots have also been developed and put into use by governments and scientists in situations where humans might be in danger. For example, they can be sent in to investigate an unexploded bomb or an accident at a nuclear power plant. Researchers also use robots to collect samples of hot rocks or gases in active volcanoes. In space exploration, robots have performed many key tasks where humans could not be present, such as on the surface of Mars. In 2004, two robotic Rovers, small six-wheeled computerized cars, were sent to Mars.

What can be inferred from the passage about robots?

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.

   The countryside of Britain is well known for its beauty and many contrasts: its bare mountains and moorland, its lakes, rivers and woods, and its long, often wild coastline. Many of the most beautiful areas are national parks and are protected from development. When British people think of the countryside they think of farmland, as well as open spaces. They imagine cows or sheep in green fields enclosed by hedges or stone walls, and fields of wheat and barley. Most farmland is privately owned but is crossed by a network of public footpaths.

   Many people associate the countryside with peace and relaxation. They spend their free time walking or cycling there, or go to the country for a picnic or a pub lunch. In summer people go to fruit farms and pick strawberries and other fruit. Only a few people who live in the country work on farms. Many commute to work in towns. Many others dream of living in the country, where they believe they would have a better and healthier lifestyle.

   The countryside faces many threats. Some are associated with modern farming practices, and the use of chemicals harmful to plants and wildlife. Land is also needed for new houses. The green belt, an area of land around many cities, is under increasing pressure. Plans to build new roads are strongly opposed by organizations trying to protect the countryside. Protesters set up camps to prevent, or at least delay, the building work.

   America has many areas of wild and beautiful scenery, and there are many areas, especially in the West in states like Montana and Wyoming, where few people live. In the New England states, such as Vermont and New Hampshire, it is common to see small farms surrounded by hills and green areas. In Ohio, Indiana, Illinois and other Midwestern states, fields of corn or wheat reach to the horizon and there are many miles between towns.

   Only about 20% of Americans live outside cities and towns. Life may be difficult for people who live in the country. Services like hospitals and schools may be further away and going shopping can mean driving long distances. Some people even have to drive from their homes to the main road where their mail is left in a box. In spite of the disadvantages, many people who live in the country say that they like the safe, clean, attractive environment. But their children often move to a town or city as soon as they can.

   As in Britain, Americans like to go out to the country at weekends. Some people go on camping or fishing trips, others go hiking in national parks.

According to the passage, some Americans choose to live in the country because ___.

Choose the letter A, B, C or D to complete the passage below

It is often said that books are always good friends … (1)… reading is an active mental process. … (2)… TV, books make you use your brain. By reading, you think more and become smarter. Reading improves concentration and focus. Reading books takes brain power. It requires you to focus … (3)… what you are reading for long periods. Unlike magazines, Internet posts or e-Mails that might contain small …(4)… of information. Books tell the whole story". Since you must concentrate in order to read, you will get better at concentration. Many studies show if you do not use your memory; you lose it. Reading helps you …(5)… your memory muscles. Reading requires remembering details, facts and figures and in literature, plot lines, themes and characters.

(3)............................

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks from 36 to 40.
Vietnamese generally shake hands when greeting and parting. Using both hands shows respect as does a (36)_________ bow of the head. In rural areas, elderly people who do not extend their hand are greeted with a slight bow. Women are more likely to bow the head than to shake hands. Vietnamese names begin with the family name andare (37)_________ by a given name. People address one another by their given names,    but add a title that indicates their perceived relationship to the other person. These titles are family related rather than professional. Among colleagues, for example, the younger of the two might combine the given name with the title of - Anh(OlderBrother). A/n (38)_________ greeting combined with the given name and titleis “Xin chao” (Hello). Classifiers for gender and familiarity are also combined with the greeting. In formal meetings, business cards are sometimes exchanged on greeting.
Vietnamese have astrong (39)_________ of hospitality and feel embarrassed if they cannot show their guests  full respect by preparing for their arrival. Therefore, it is (40)_________ to visit someone without having been invited. Gifts are not required, but are appreciated. Flowers, incense, or tea may be appropriate gifts for the hosts. Hosts also appreciate a small gift for their children or elderly parents.
(40).................

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.

   The countryside of Britain is well known for its beauty and many contrasts: its bare mountains and moorland, its lakes, rivers and woods, and its long, often wild coastline. Many of the most beautiful areas are national parks and are protected from development. When British people think of the countryside they think of farmland, as well as open spaces. They imagine cows or sheep in green fields enclosed by hedges or stone walls, and fields of wheat and barley. Most farmland is privately owned but is crossed by a network of public footpaths.

   Many people associate the countryside with peace and relaxation. They spend their free time walking or cycling there, or go to the country for a picnic or a pub lunch. In summer people go to fruit farms and pick strawberries and other fruit. Only a few people who live in the country work on farms. Many commute to work in towns. Many others dream of living in the country, where they believe they would have a better and healthier lifestyle.

   The countryside faces many threats. Some are associated with modern farming practices, and the use of chemicals harmful to plants and wildlife. Land is also needed for new houses. The green belt, an area of land around many cities, is under increasing pressure. Plans to build new roads are strongly opposed by organizations trying to protect the countryside. Protesters set up camps to prevent, or at least delay, the building work.

   America has many areas of wild and beautiful scenery, and there are many areas, especially in the West in states like Montana and Wyoming, where few people live. In the New England states, such as Vermont and New Hampshire, it is common to see small farms surrounded by hills and green areas. In Ohio, Indiana, Illinois and other Midwestern states, fields of corn or wheat reach to the horizon and there are many miles between towns.

   Only about 20% of Americans live outside cities and towns. Life may be difficult for people who live in the country. Services like hospitals and schools may be further away and going shopping can mean driving long distances. Some people even have to drive from their homes to the main road where their mail is left in a box. In spite of the disadvantages, many people who live in the country say that they like the safe, clean, attractive environment. But their children often move to a town or city as soon as they can.

   As in Britain, Americans like to go out to the country at weekends. Some people go on camping or fishing trips, others go hiking in national parks.

Which of the following threatens the countryside in Britain?

Read the following passage and mark A, B, C, or D to indicate the correct answer to each  of the blanks.

Modern industry pollutes, and it also seem to cause significant changes to the climate. What is needed is an industry that (41)_________ the benefits without the costs. And the glimmerings of such an industry can now be (42)_________ .
That industry is based on biotechnology. At the moment, biotech‟s main uses are in medicine and agriculture.  However,  its  biggest  long  term impact maybe industrial.  Biotechnology will  (43)_________ demand for oil by taking the cheapest raw materials imaginable, carbon dioxide and water, and using them to make fuel and plastics.
Plastics and fuels made in this way would have several advantages. They can be called “renewable”, (44)_________ nothing is depleted to make them. They would be part of the natural carbon cycle, borrowing    that element from the atmosphere for a few months, and returning it when they were burned or (45)_________ . That means they could not possibly contribute to global warming. They would also be environmentally friendly in other ways.
All in all, the future could be green in ways that traditional environmentalists had not expected.
(44)........................

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, hydrosen, 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.

The paragraph following the passage most probably discuss ________.

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 41 to 45.
SOCIAL NETWORK
A 16-year-old girl from Essex has been sacked after describing her job as boring on the social networking website, Facebook. The teenager, who had been working (41)      an administrative assistant at a    marketing company for just three weeks, didn‟t feel very enthusiastic about the duties she was asked to do. (42)       of moaning to her friends she decided to express her thoughts on her Facebook page to a colleague, who (43)       the boss‟s attention to it. He immediately fired her on the (44)       that her public display of dissatisfaction made it impossible for her to continue working for the company. She later told newspapers she had been treated totally unfairly, especially as she hadn‟t even mentioned the company‟s name. She claimed she‟s been perfectly happy with her job and that her light-hearted comments shouldn‟t (45)      taken seriously. A spokesperson from a workers‟ union said the incident demonstrated two things: firstly, that people need to protect their privacy online and secondly, that employers should be less sensitive to criticism.
(41).......................

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

"Many parents believe that they should begin to teach their children to read when they are (1)….. more than toddlers. This is fine if the child shows a real interest but (2)…… a child could be counter-productive if he isn’t ready. Wise parents will have a (3)….. attitude and take the lead from their child. What they should provide is a selection of (4)….. toys, books and other activities. Nowadays there is a plenty of good (5)….. available for young children, and of course, seeing plenty of books in use about the house will also (6)…..  them to read.
 Of course, books are no longer the only (7)….. of stories and information. There Js also a huge range of videos, which can (8)…. And extend the pleasure a child finds in a book and are (9)… valuable in helping to increase vocabulary and concentration. Television gets a bad (10)…. as far as children are concerned, mainly because too many children spend too much time watching programmes not intended for their age group."

2. This is fine if the child shows a real interest but (2)…… a child could be counter-productive if he isn’t ready.

Let children learn to judge their own work. A child learning to talk does not learn by being corrected all the time. If corrected too much, he will stop talking. He notices a thousand times a day the difference between the language he uses and the language those around him use. Bit by bit, he makes the necessary changes to make his language like other people’s. In the same way, children learn all the other things they learn to do without being taught - to talk, run, climb, whistle, ride a bicycle - compare their own performances with those of more skilled people, and slowly make the needed changes. But in school we never give a child a chance to find out his mistakes for himself, let alone correct them. We do it all for him. We act as if we thought that he would never notice a mistake unless it was pointed out to him, or correct it unless he was made to. Soon he becomes dependent on the teacher. Let him do it himself. Let him work out, with the help of other children if he wants it, what this word says, what the answer is to that problem, whether this is a good way of saying or doing this or not.
If it is a matter of right answers, as it may be in mathematics or science, give him the answer book. Let him correct his own papers. Why should we teachers waste time on such routine work? Our job should be to help the child when he tells us that he can’t find the way to get the right answer. Let’s end all this nonsense of grades, exams, and marks. Let us throw them all out, and let the children learn what all educated persons must someday learn, how to measure their own understanding, how to know what they know or do not know.
Let them get on with this job in the way that seems most sensible to them, with our help as school teachers if they ask for it. The idea that there is a body of knowledge to be learnt at school and used for the rest of one’s life is nonsense in a world as complicated and rapidly changing as ours. Anxious parents and teachers say, “But suppose they fail to learn something essential, something they will need to get on in the world?” Don’t worry! If it is essential, they will go out into the world and learn it.

The word “he” in the first paragraph refers to ________ .

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

GLOBAL WARMING

Few people now question the reality of global warming and its effects on the world's climate. Many scientists (1) _____________the blame for recent natural disasters on the increase in the world's temperatures and are convinced that, more than ever before, the Earth is at risk from the forces of the wind, rain and sun. According to them, global warming is making extreme weather events, such as hurricanes and droughts, even more (2) _____________and causing sea levels all around the world to rise.

     Environmental groups are putting pressure on governments to take action to reduce the amount of carbon dioxide which is given (3) _____________by factories and power plants, thus attacking the problem at its source. They are in favor of more money being spent on research into solar, wind and wave energy devices, (4) _____________ could then replace existing power station.

Some scientists, (5) _____________, believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow, we would have to wait several hundred years to notice the results. Global warming, it seems, is to stay.

(3) _________

Course numbers are an indication of which courses are to various categories of students at the University. Undergraduate courses with the numbers 100 or 200 are generally introductory courses appropriate for freshmen or sophomores, whereas courses with the numbers 300 or 400 often have prerequisites and are often to juniors and seniors only. Courses with the numbers 800 or above are open only to graduate students. Certain graduate courses, generally those devoted to introductory material, are numbered 400 for undergraduate students who qualify to take them and 600 for graduate students. Courses designed for students seeking a professional degree carry a 500 number for undergraduate students and a 700 number for graduate students. Courses numbered 99 or below are special interest courses that do not carry academic credit. If students elect to take a special interest course, it will not count toward the number of hours needed to complete graduation requirements.
Full - time undergraduate student is expected to take courses that total twelve to eighteen credit hours. A full-time graduate student is expected to take courses that total ten to sixteen credit hours. Student holding assistantships are expected to enroll for proportionately fewer hours. A part - time graduate may register for minimum of three credit hours. An overload, that is, more than the maximum number of hours, may be taken with the approval of an academic advisor. To register for an overload, students must submit the appropriate approval form when registering. Overloads above 24 hours will not be approved under any circumstances.

What is the purpose of the passage?