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:
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon- 14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon- 14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the molecule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.

It can be inferred from the passage that if an item contains more carbon-14 than nitrogen-14, then the item is     .

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Schools in the United States have not always had a large number of libraries. As (42)______ as 1958 about half of the public schools in the United States had no libraries at all. The (43)______ of public school libraries increased dramatically when the federal government passed the Elementary and Secondary Education Act of 1965, (44)______ provided funds for school districts to improve their education programs and facilities, including their libraries. (45)______, many educators claim that since the legislation was passed federal spending has not increased sufficiently to meet the rising (46)______ of new library technologies such as computer databases and Internet access Because the federal government provides only limited funds to schools, individual school districts (47)______ on funds from local property taxes to meet the vast majority of public school expenses. Therefore, the libraries of public schools tend to reflect the (48)______ capabilities of the communities in which they are located. Districts in wealthy suburbs often have fully staffed libraries (49)______ abundant resources, spacious facilities, and curricular and instructional support. In (50)______, school districts in many poor areas house their libraries in ordinary classrooms or in small rooms. The libraries in such areas are generally staffed by volunteers, who organize and (51)______ books that are often out-of-date, irrelevant, or damaged

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Nearly 200 of the 1500 native plant species in Hawaii are at risk of going extinct in the near future because they have been (1) ____ to such low numbers. Approximately 90 percent of Hawaii's plants are found nowhere else in the world but they are (2) ____ by alien invasive species such as feral goats, pigs, rodents and (3) ____ plants. The Hawaii Rare Plant Restoration Group is striving to (4) ____ the extinction of the 182 rare Hawaiian plants with fewer than 50 individuals remaining in the (5) ____ . Since 1990, (6) ____ a result of their "Plant Extinction Prevention Program", sixteen species have been brought into (7) ____ and three species have been reintroduced. Invasive weeds have been removed in key areas and fencing put up in order to (8) ____ plants in the wild. In the future the Hawaii Rare Plant Restoration Program aims (9) ____ collecting genetic material from the remaining plants in the wild for storage as a safety net for the future. They also aim to manage wild populations and where possible reintroduce species into (10) _____

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If you‘ve been told by your boss to improve your knowledge of a foreign language you‘ll know that success doesn‘t come quickly. It generally takes years to learn another language well and constant (33) _____ to maintain the high standards required for frequent business use. Whether you study in a class, with audio cassettes, computers or on your (34) _____ sooner or (35) _____ every language course finishes and you must decide what to do next if you need a foreign language for your career. Business Audio Magazine is a new product designed to help you continue language study in a way that fits easily into your busy schedule. Each audio cassette (36) _____ of an hour-long program packed with business news, features and interviews in the language of your choice. These cassettes won‘t teach you how to order meals or ask for directions. It‘s (37) _____ that you can do that already. Instead, by giving you an opportunity to hear the language as it‘s really spoken, they help you to (38) _____ your vocabulary and improve your ability to use real language relating to, for example, that all-important marketing trip. The great advantage of using audio magazines is that they (39) _____ you to perfect your language skills in ways that suit your lifestyle. For example, you can select a topic and listen in your car or hotel when away on business. No other business course is as (40) _____ and the unique radio magazine format is as instructive as it‘s entertaining. In addition to the audio cassette, this package includes a transcript with a business glossary and a study (41) _____. The components are structured so that intermediate and advanced students may use separately or together, (42) _____ on their ability

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British parents are always complaining that their children spend too much time gluing to the telly and not enough (37)____ other activities like sports and reading. A survey recently carried out on people's viewing habits (38)____ not disapprove it. It shows that young people in Britain spend on (39)___ twenty three hours a week in front of the television, (40)_______ works out at over three hours every day. What is surprising, however, is the fact that the average adult watches even more: an incredible 28 hours a week. We seem to have become a nation of telly addicts. Just about (41)_______ household in the country has a television and over half have two or more. According (42)___ the survey, people nowadays don't just watch television sitting in their living room, they watch it in the kitchen and in bed as well. The Education Minister said a (43)___weeks ago that Britain's pupils should spend more time reading. Unfortunately, parents are not setting a good example: adults do (44)__ reading than young people. In fact, reading is (45)___ the bottom of their list of favorite pastimes. They would (46)____ listen to the radio, go to the cinema or hire a video to watch on their television at home

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I was raised on a farm in a remote village in the 1950s. The winter months were endless and everything was covered in snow. I was always (53) ________ for the warmer weather to come. When spring arrived, everything came alive- flowers would bloom and the animals would come out of hibernation. I would follow the bear tracks and search for them. Once, however, I (54) ________ an angry mother bear who saw me (55) ________ a threat. (56) ________ the sight of the bear, I did what my father had told me. I stood still until she stopped growling and walked away. The trick was effective, but looking back now, I realized that the situation was (57) ________ more serious than I thought at the time. By the age of twelve, I had lots of camping (58) ________, as I used to go camping with my dog on my school holidays. We would spend days (59) ________ the forest, catching fish for dinner, (60) ________ at the frogs and the (61) ________ of birds and the insects hopping up and down on the surface of the water. Of course, this was possible only during the warm months. When the autumn came, everything went quiet, which was quite usual in those parts. It wasn‘t long before the animals disappeared, the birds (62) ________ south and the snow took over. The place became deserted once again

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:
Langston Hughes was one of the greatest American writers of the twentieth century. He was born in Joplin, Missouri, and moved to Cleveland at the age of fourteen. Four years later he went to Mexico and spent one year there before attending Columbia University in New York. For a few years after that he roamed the world as a seaman, visiting ports around the world and writing some poetry. He returned to the United States and attended Lincoln University, where he won the Writer Bynner Prize for undergraduate poetry. After graduating in 1928, he traveled to Spain and to Russia. His best novels include “Not Without Laughter” and “The Big Sea”. He wrote an autobiography in 1956 and also published his collections of poetry then. A man of many talents, Hughes is one of the most accomplished writers in American literature history.

Which of the following statements is NOT true?

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.
                   THANKS A MILLION
Percy Ross was bom in 1916 in Michigan. His parents has come to the USA from Latvia and Russia  and  the  family  were  poor.  But  Percy  soon  showed  a  talent  (1)...... business and made a (2)......... in the fur trade and auction business. Then disaster struck and he lost all his money. But he soon made a fortune again - this time by manufacturing plastic bags. In 1969, he sold his plastic bag company for millions of dollars.
 Ross started giving away in 1977: he gave $50,000 to 50 Vietnamese refugees so that they could make a new home in the USA. (3) ........ he held a Christmas party tor 1,050 poor children in the American town of Minneapolis. Ross bought a bike for every one of the 1,050 children at the party.
After these first experiences of giving money away, Ross decided to do it on a (4) ............ basis. He started  a  newspaper  column  called  “Thanks  a  Million”,  and  later  a  radio  show,  in  order  to (5)...... his money. It took years, but Ross finally succeeded in giving away his entire fortune.
(5)....................

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One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1) ________ pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2) ________ poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3) ________ a rich variety of animals and plants, including 1,300 rare species that do not exist (4) ________ else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5) _______ into the lake every day. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea (6) ________ 1% of the world's water surface. But it is the dumping (7) ________ for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8) ________ shore. Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9) ________ by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10) ________. We should do something now

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At 19, Ben Way was already a millionaire, and one of a number of teenagers who _____(1) their fortune through the Internet. _____(2) makes Ben‘s story all the more remarkable is that he is dyslexic, and was_____ (3)by teachers at his junior school that he would never be able to read or write properly.‖ I wanted to prove them_____ (4)―, says Ben, creator and director of Waysearch engine which can be used to find goods in online shopping malls. When he was eight, his local authorities_____(5) him with a PC to help with school work. Althrough he was_____ (6)to read the manuals, he had a natural ability with the computer, and encouraged by his father, he soon began_____(7) people $ 10 an hour for his knowledge and skills. At the age of 15 he _____(8) up his own computer consultancy, Quad Computer, which he ran from his bedroom, and two years later he left school to_____(9) all his time to business. ―By this time the company had grown and needed to take_____(10) a couple of employees to help me‖, says Ben.That enabled me to start doing business with bigger companies.It was his ability to consistently overcome difficult challenges that led him to win the ―Young Entrepreneur of the year‖ award in the same year that he formed Waysearch

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The first question we might ask is: What can you learn in college that will help you in being an employee? The school teach a (1) ____ many things of value to the future accountant, doctor or electrician. Do they also teach anything of value to the future employee? Yes, they teach the one thing that it is perhaps most valuable for the future employee to know. But very few students bother (2) _____ it. This basic is the skill ability to organize and express ideas in writing and in speaking. This means that your success as an employee will depend on your ability to communicate with people and to (3) _____ your own thoughts and ideas to them so they will (4) _____ understand what you are driving at and be persuaded. Of course, skill in expression is not enough (5) _____ itself. You must have something to say in the first place. The effectiveness of your job depends (6) ____ your ability to make other people understand your work as they do on the quality of the work itself. Expressing one's thoughts is one skill that the school can (7) _____ teach. The foundations for skill in expression have to be (8) ____ early: an interest in and an ear (9) ___ language; experience in organizing ideas and data, in brushing aside the irrelevant, and above all the habit of verbal expression. If you do not lay these foundations (10) ___ your school years, you may never have an opportunity again

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.
For kids, water sports are adventurous and fun filled, but safety has to be given first (1)....... . All kids should compulsorily wear life jackets, (2) ...........they know how to swim. All boats and rafts should  also carry (3)..........life jackets, whistles and lifebuoys. While playing water sports, kids need to be accompanied by an adult, preferably an attentive lifeguard, who must know how to swim. He should  also  know  what   to   do   during   times   of   emergency   and   the   ABCs   of   giving   first   (4)............. Water sports should always be carried out when the climate is pleasant. If the weather is sunny, do apply sun screen cream to protect the children from radiations.
There  are  different  kinds  of  water  sports  for  children.  Let's  start  with  a  simple  water  sport (5).................. boating, which is very much enjoyable. In most of the kids and youths camps you'll find boating and canoeing. If you want an adventurous water sport, then sailing has to be your first choice.

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

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:
As a result of pollution, Lake Erie, on the borders of the USA and Canada, is now without any living things. Pollutions in water are not simply a matter of “poisons” killing large numbers of fish overnight. Very often the effects of pollution are not noticed for many months or years because the first organisms to be affected are either plants or plankton. But these organisms are the food of fish and birds and other creatures. When this food disappears, the fish and birds die in this way a whole food chain can be wiped out, and it is not until dead fish and water birds are seen at the river’s edge or on the sea shore that people realize what is happening. Where do the substances which pollute the water come from? There are two main sources – sewage and industrial waste. As more detergent is used in the home, so more of it is finally put into our rivers, lakes and seas. Detergents harm water birds dissolving the natural substance which keep their feather waterproof. Sewage itself, if it is not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful since there are many high poisonous things in it, such as copper and lead. So, if we want to stop this pollution, the answer is simple, sewage and industrial waste must be made clean before flowing into the water. It may already be too late to save some rivers and lakes, but others can still be saved if the correct action is taken at once.

The living things die because there is no     in the lake or river.

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Speech is one of the most important (35) ...... of communicating .It consists of far more than just making noises . To talk and also (36) ........ to by other people, we have to speak a language ,that is, we have to use combinations of (37).......  that everyone agrees to stand for a particular object or idea. Communication would be impossible if everyone made up their own language.  Learning a language properly is very (38)........ . The basic (39)......... of English is not very large, and not only about 2,000 words are needed to speak it quite (40)............ .But the more idea you can (41)........ the more precise you can be about their exact meaning. Words are the (42)........ thing we use in communicating what we want to say. The way we(43)........... the words is also very important. Our tone of voice can express many emotions and (44).......... whether we are pleased or angry, for instance

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:
"Memorize these words". "Learn this spelling rule". "Don't forget about the quiz tomorrow".
You remember things every day, but how do you do it?
When you want to call a store or an office that you don't call often, you look in the telephone book for the number. You dial the number, and then you forget it! You use your short-term memory to remember the number. Your short-term memory lasts about 30 seconds, or half a minute. However, you don't need to look in the telephone book for your best friend’s number because you already know it. This information is in your long-term memory. Your long-term memory has everything that you remember through the years.
Why do you forget things sometimes? Is there a reason? Yes, there are several. The major reason for forgetting something is that you did not learn it well in the beginning. For example, you meet some new people, and right away, you forget their names. You hear the names but you do not learn them, so you forget them.
You can help yourself remember better. Here are some ideas:
Move information from your short-term memory to your long-term memory. You can do this if you practice the new information. Say it to yourself out loud. Think about it.
After you learn something, study it again and again. Learn it more than you need to. This process is called overlearning. For example, when you learn new words, practice using them in sentences. Don't try to memorize words from a list only.
Make sure that you understand new information. It is very difficult to remember something that you don't understand. Ask questions when you learn something new to be certain that you understand.
Do not listen to music or watch TV when you study. You will remember better if you concentrate on one thing at a time.
Try to connect new information with something that you already know. For example, when you learn the name of a new kind of food, think of a similar kind of food that you already know.
Divide new information into several parts (about five or six). Learn one part at time and stop for few minutes. Don't sit down and try to learn a very large amount of new information all at once.
Try to make a picture in your mind. For example, if you hear or see a new word, make a picture of how it looks to you in your mind. This “mental” picture will help you remember that word the next time you see or hear it.
Think of word clues to help you remember information. One very helpful kind of word clue is an acronym. An acronym is a word formed from the first letter of a group of words. For example, many American schoolchildren learn the names of the Great Lakes in the North America by remembering the word homes. Homes is an acronym that comes from the names of the Great Lakes: Huron, Ontario, Michigan, Erie, Superior.
Relax when you study! Try to enjoy yourself. You are learning new things every minute. You will remember better if you are happy and relaxed.

New information is easier to remember if you     .

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Tattooing is an old art. In ancient Greece, people who had tattoos were regarded as members of the (16) __________ classes. On the other hand, tattooing was (17) __________ in Europe by the early Christians, who thought that it was a sinful thing to (18) __________. It was not until the late 18th century, when Captain Cook saw South Sea Islander decorating their bodies with tattoos that attitudes began to change. Sailors came back from these islands with pictures of Christ on their backs and from then on, tattooing (19)__________ in popularity. A survey by the French army in 1881 (20) __________ that among the 387 men (21) __________there were 1,333 designs. Nowadays, not everybody finds tattoos acceptable. Some people thing that getting one is silly because tattoos are more or less permanent. There is also some (22) __________ about (23) __________ a blood disease from unsterilized needles. Even for those who do want a tattoo, the (24) __________ of getting one is not painless, but the final result, in their eyes, is (25) __________ the pain

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Our family has got many books. All the …(33)……… of our family buy books and read them. My mother says that books help us in self-education. In ancient times, books ……(34)…… written by hand. It was difficult to write a book …(35)……… a pen. Then printing came into our life. Printing played an important ……(36)…. in the development of literature and culture. Now there are a lot of books in the shops, there are many books in our flats. But it is difficult to buy all books …(37)……… we want to read. That‘s why we get books in public libraries. There are some problems in our life and sometimes it is difficult to ……(38)… them. I think that books can help us. Last year I read a very interesting book ― An American Tragedy‖ by Theodore Dreiser. This novel was …(39)…… at the beginning of the 20th century. The novel ……(40)……. The tragic fate of a boy and a girl, Clyde and Roberta ……(41)…… name. It is a sad story. This novel was written many years ago, but it is …(42)……… nowadays. Books must be our friends during our life

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May 7, 1840 was the birthday of one of the most famous Russian composers of the nineteenth century Peter Illich Tchaikovsky. The son of a mining inspector, Tchaikovsky studied music as a child and later studied composition at the St.Pertersburg Conservatory. His greatest period of productivity occurred between 1876 and 1890, during which time he enjoyed the patronage of Madame von Meck, a woman he never met, who gave him a living stipend of about $1,000.00 a year. Madame von Meck later terminated her friendship with Tchaikovsky, as well as his living allowance, when she, herself, was facing financial difficulties. It was during the time of Madame von Meck’s patronage, however, that Tchaikovsky created the music for which he is most famous, including the music for the ballets of Swan Lake and The Sleeping Beauty.
Tchaikovsky’s music, well known for its rich melodic and sometimes melancholy passages, was one of the first that brought serious dramatic music to dance. Before this, little attention had been given to the music behind the dance. Tchaikovsky died on November 6,1893, ostensibly of cholera, though there are now some scholars who argue that he committed suicide.

With what topic is the passage primary concerned?

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:
One of the highest honors for formalists, writers, and musical composers is the Pulitzer Prize. First awarded in 1927, the Pulitzer Prize has been won by Ernest Hemingway, Harper Lee, John F. Kennedy, and Rodgers and Hammerstein, among others. As with many famous awards, this prize was named after its founder, Joseph Pulitzer.
Joseph Pulitzer’s story, like that of many immigrants to the United States, is one of hardship, hard work and triumph. Born in Hungary, Joseph Pulitzer moved to United States in 1864. He wanted to be a reporter, but he started his American life by fighting in the American Civil War. After the war, Pulitzer worked for the German - language newspaper, the Westliche Post. His skills as a reporter were wonderful, and he soon became a partial owner of the paper.
In 1978, Pulitzer was able to start a newspaper of his own. Right from the first edition, the newspaper took a controversial approach to new. Pulitzer wanted to appeal to the average reader, so he produced exciting stories of scandal and intrigue. Such an approach is commonplace today, but in Pulitzer’s time it was new and different. The approach led to the discovery of many instances of corruption by influential people. Pulitzer ‘paper became very famous and is still produced today.
The success of Joseph Pulitzer’s newspaper made him a very wealthy man, so he wanted to give something back to his profession. Throughout his later years, he worked to establish university programs for the teaching of journalism, and he funded numerous scholarships to assist journalism students. Finally, he wanted to leave a legacy that would encourage writers to remember the importance of quality. On his death, he gave two million dollars to Columbia University so they could award prizes to great writers.
The Pulitzer Prize recipients are a very select group. For most, winning a Pulitzer Prize is the highlight of their career. If an author, journalist, or composer you know has won a Pulitzer Prize, you can be sure they are at the top of their profession.

According the passage, who receives the Pulitzer Prize?

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Everyone wants to reduce pollution . But the pollution problem is ( 1 ) …………….. complicated as it is serious . It is complited ( 2 ) …………… much pollution is caused by things that benefit people . ( 3)………. , exhaust from automobiles causes a lartge percentage of air pollution . But the automobile (4 ) ….. transportation for millions of people . Factories discharge much (5)……. the material that pollutes theair and water , but factories give employment to a large munber of people . Thus , to end (6)……… greatly reduce pollution immediately , people would have to ( 7) ….. using many things that benefit them . Most of the people do not want to do that , of course . But pollution can be ( 8) ….. reduced in several ways . Scientists and engineers can work to find ways lessen the (9) ………. Of the pollution that such things as automobiles and factories cause . Governments can pass and enforce laws that (10) ……….businesses and traffic to stop , or to cut down on certain polluting activities

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A typical person needs about 1,800 calories per day to stay running.. They keep your organs operating (33)_______ and your brain running. They also keep your body warm. A person gains weight because he or she consumes more calories per day than (34)  ________. The only way to lose fat is to reduce the (35) ________ of calories that you consume per day. This is the basic principle (36) ________ going on a diet. Unfortunately, diets don‘t work for most people. They do lose weight but then go off the diet and put it back. Building a sensible diet and exercise plan is the key (37) ________ maintaining a consistent weight. You need to figure out how many calories you need in a day and how many you actually (38) ________. The next step is to add exercise (39) ________ you can raise the number of calories you can consume per day. Burning 250 or 500 calories per day can make a big (40) ________. You can ride an exercise bike while you are watching television (41) ________ you can take the stairs instead of the elevator. Find an exercise partner. Exercises can be a lot easier if there is someone to talk to. It‘s a good idea to wear firm-fitting clothes if you are (42) ________. Tight clothing acts as a reminder of what you are trying to accomplish