Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been "primed" by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.
Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.
In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

According to the passage, all of the following statements about plaque are true EXCEPT     .

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.

   My family consists of four people. There's my father whose name is Jan, my mother whose name is Marie, my brother, Peter and of course, me. I have quite a large extended family as well but, only the four of us live together in our apartment in a block of flats. My father is fifty-two years old. He works as an accountant in an insurance company. He is tall and slim, has got short brown and gray hair and blue eyes. My father likes gardening very much as well as listening to music and reading books about political science. His special hobbies are bird watching and travelling.

   Now I’ll describe my mother and my brother. My mother is forty-seven and she works as a nurse in a hospital. She is small, and slim, has short brown hair and green eyes. She likes bird watching and travelling too, so whenever my parents are able to they go someplace interesting for nature watching. Since we have a cottage with a garden they both spend a lot of time there. My brother is sixteen. He is slim and has short brown hair and blue eyes. He also attends high school. He is interested in computers and sports like football and hockey. He also spends a lot of time with his friends.

   I have only one grandmother left still living. She is in pretty good health even at the age of seventyeight so she still lives in her own flat. I enjoy spending time with her when I can. Both my grandfathers died from cancer because they were smokers, which was really a great tragedy because I didn't get chance to know them. My other grandmother died just a few years ago. I also have a lot of aunts, uncles, and cousins. The cousin I’m closest to is my uncle’s daughter Pauline. We have a lot in common because we are both eighteen and so we are good friends.

   My parents have assigned me certain duties around the house. I don't mind helping out because everyone in a family should contribute in some way. I help with the washing up, the vacuuming and the shopping. Of course I also have to help keep my room tidy as well. My brother is responsible for the dusting and mopping. He also has to clean his own room. Even though my brother and I sometimes fight about who has to do what job, we are still very close. I am also very close to my parents and I can rely on them to help me. My parents work together to keep our home well maintained and it seem they always have a project or another that they are working on. They respect each other's opinions and even if they disagree they can always come to a compromise. I hope in the future that 1 have a family like ours.

The word "tragedy" in the third paragraph mostly means..........

Read the passage below carefully, and then choose the best answer:
The Great Debate over GM Foods
One of the hottest topic in agriculture today is genetically modified (GM) foods. GM foods are foods that come from plants that have had their DNA altered using biotechnology. GM foods have been on the market since 1994, when a company called Calgene started selling GM tomatoes. Since then, other GM foods including papaya, corn, and plums to name a few have been developed. The main benefit of GM foods is that they can be a more economical solution than non GM foods. Scientists found a way to modify many plants to make them more resistant to weeds, diseases, and pests. This allows the plants to grow in tougher climates and conditions, which should lead to lower food prices and increase the overall food supply. However, many consumers still have their doubts about GM foods. For one they feel that by eating GM foods people are messing with nature. Until now humans have survived on food that was produced without any interference from science. Even though many lab studies show that GM foods are safe in the short term, opponents feel that not enough long-term testing has been done yet. Another major issue in the GM foods debate is its labelling. Current US laws do not require producers to label their foods as GM. This has upset many consumers who feel they have the right to clearly know how the food they are buying is produced. On the other hand, producers are afraid to label their foods as GM because they feel it will result in less product sales, as people may assume that there is something wrong with GM foods. This controversy is not just on the level of consumers and producers. The issue of non GM foods has also become a block to a major free trade agreement between the US and Europe. GM foods are banned throughout most of Europe, while they are quite common throughout the US. Since many American GM food producers would like to sell their foods overseas in Europe, the US is requesting that European nations eliminate laws banning GM foods. However, many European nations are not fully convinced that these products are safe.
2. According to the passage, why did scientists invent GM foods?

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
(1) ........ .........most scientists dismiss tales of out-of-body experiences on the operating table as dreams and delusions, there are some cases which seem to defy rational explanation. Take Margaret Frobisher. In 2003, she was undergoing a routine operation under general anaesthetic at Sansdown Hospital in Kent. There were serious complications, (2) ......................... , and her heart stopped beating. Try (3) ......................... they might, the surgeon and anaesthetist were unable to resuscitate her. Finally, after eight minutes, they succeeded. (4) ......................... having been clinically dead, Margaret suffered no brain damage and no adverse side effects. The story doesn't stop there, (5) ......................... . When the anaesthetist went to visit her in her hospital bed, Margaret Frobisher recounted an amazing story. She said she vividly remembered floating above the operating table. And (6) ......................... her never having been conscious in that room at any time, she described the room and the resuscitation attempt in great detail. She said that (7) ......................... three of the walls were bright white, one was dark grey. This was true. She also said that, on the top of a cabinet in a corner of the operating theatre, there was an old book. (8) ......................... the anaesthetist didn't - and couldn't - believe her, she checked. There, just as Margaret Frobisher had described it, was the book. (9) ......................... as they tried, no one at the hospital could explain how Margaret could have known about the book. Even (10) ......................... one does not believe in a 'soul' or in life after death, it is difficult to explain what happened in that operating theatre when Margaret Frobisher's heart stopped beating

Choose the best answer:
He worked very hard, _________ he passed the exam easily.

Read the passage below carefully, and then choose the best answer:
An Amazing Invention
Look at your hand, and it might not seem very interesting at first, but it is an amazing tool. In fact, the human hand is as complex and as useful as a high tech machine. This might sound strange to you, but the development of the human hand changed the world. For example, the thumb helped human beings become the smartest and most powerful animals on the Earth. Your thumb is important because it faces your other fingers. This allows you to hold things, like tools. Being able to hold tools allowed our ancient ancestors to build things and become more advanced. It is also possible that when we developed thumbs and started to use tools, our brains developed faster as well. And how about this? Your fingers are the only parts of your body that are moved by a “remote control”. A remote control is the small device that you use to change the channel on your television. Your fingers are controlled by remote because they don’t have any muscles. You control your fingers with the muscles in your palms. The palms are connected to the fingers by tendons. The palms pull the tendons, and move them the same way a string moves a puppet. Every part of the human body is complicated, but the hand is especially complicated. It has a total of 29 bones. There are 34 different muscles that move the fingers and the thumb. Seventeen of those muscles are in the palm, and 18 are in the forearm. The human hand also has 48 nerves and 30 arteries. An artery is like a vein, but it carries blood away from the heart. Human beings are not as strong or as fast as other animals. However, our ancient ancestors were able to rule the world for two reasons.  First, they were intelligent. Second, they had these amazing instruments called hands. There is no other invention like them in the world. 
7. What would be another good title for the passage?

Congratulations on your remarkable ---135--- in the Netherlands, Belgium, and Luxembourg. Your region has improved its on-time delivery performance for each of the past seven quarters. ---136---. I am pleased to offer you a promotion to Director of European Operations. The position ---137--- in Hamburg, Germany. I realize that relocating may be difficult for you. ---138---, I certainly hope that you will take time to consider this opportunity. Please call me at your earliest convenience so that we can discuss any concerns you may have.

135...................

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
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 forcing a child could be counter-productive if she isn't ready. Wise parents will have a (2) ________attitude and take the lead from their child. What they should provide is a selection of stimulating toys, books and other activities. Nowadays there is plenty of good (3) ________available for young children, and of course, seeing plenty of books in use about the house will also (4) ________them to read. Of course, books are no longer the only source of stories and information. There is also a huge range (5)_______ videos, which can reinforce and extend the pleasure a child finds in a book and are equally valuable in helping to increase vocabulary and concentration. Television gets a bad review as far as children are concerned, mainly because too many spend too much time watching programmes not intended for their age group

Rewrite sentences without changing the meaning
The valley is so dangerous to live in.

Choose the best answer:
What about ___________ the solution together this afternoon?

Read the passage carefully and choose the correct answer.

Jean spent her first few years in Hooper and her family moved to Otsego early in her life. She was only ten when her father died unexpectedly, leaving her mother to raise and support their family alone. Her mother soon went to work outside the home to provide for the family, and Jean, being one of the oldest, had to help care for her younger siblings. Although she had much responsibility at home, Jean thoroughly enjoyed school and was an excellent student. She went on to graduate 10th in her class at Otsego High School in 1953.

While still in high school, Jean met a young man named Charles "Chuck" Holly, at a dance in Alamo; and they were quite taken with each other. Over the next few years, their love for each other blossomed and they were married on February 24, 1953, while Jean was still in school. At the time, Chuck was serving his country in the military, and had come home on leave to marry his sweetheart. Unfortunately, shortly thereafter, he was sent overseas to serve in Korea for the next fifteen months.

Upon his discharge, the couple settled into married life together in the Plainwell, Otsego area. To help make ends meet, Jean went to work at the collection bureau in Kalamazoo for a while, before taking a job at the cheese company in Otsego. In 1964, Chuck and Jean were overjoyed with the birth of their son, Chuck, who brought great joy into their lives. Jean remembered how her mother was always gone so much working after her father died and she did not want that for her son, so she left her job to devote herself to the role of a mother.

Before Jean's father passed away, her mother used to _______.

Read the following passage and choose the best answer (A, B, C, D):
Hot springs are natural springs which produce warm water. Usually, these springs produce water that is at a temperature above the human body. The water is (1) __________ heated. The water comes from close to the center of the earth. There are hot springs in many places all over the world. Some of these are not so hot and people can bathe in them. However, other hot springs are dangerously hot. If a person tried to (2)___________ a bath, they would be seriously hurt, or they might die. Yangpachen Hot Springs in Tibet are famous example of hot springs. In particular, they are famous (3) _________ they are the highest hot springs in the world. These hot springs are 4,500 meters above sea (4)_______. From these hot springs people can see beautiful views of the Nyainqen Tanggula mountain range. There is a resort there that people can visit. At this resort, there are three hot spring pools that people can use. The natural water in
these pools is cooled down so that people can bathe (5)_______ comfort. The original temperature of the water is 70 degrees Celsius or 158 degrees Fahrenheit

Choose the best answer:
He lives in a very ............... village in Hue.

Choose the best answer:
He could do nothing  = He couldn’t do ________

The plan’s highest priority was to develop _____ agriculture.

(296)____

Read the following passage and choose the best answer (A, B, C, D):
Left-handers are the odd ones out. Sure, lefties (1) ______up about 10 percent of the population but, frankly, it seems like society has forgotten about them. Just consider all of the right-handed gadgets, awkwardly designed desks, and cooking tools that fit comfortably only in your right hand. What (2)______someone to become a lefthand? Scientists aren’t exactly sure, but research points to a complex (3)______between genes and environment.  While no exact set of “leftie genes” have been discovered, people who dominantly use their left hands do have more left-handed family members. And researchers have found different brain wirings in righties vs. lefties. But no matter (4) ______it is that drives someone to use their antipodal paw, science has also uncovered a particular set of personality traits that left-handed people tend to have. So for all of you lefties, leftie-loving righties, and ambidextrous folks out there - it’s time to brush up on your left-handed knowledge and help (5) ______an end to leftie discrimination once and for all

Choose the best answer:
world/ the/ longest/ is/ The/ Thai name/ in/ the/ of/ Bangkok.

LONDON LANDMARKS

Millions of people visit London every year from all (1) _______ the world. If you travel there, you’ll find many (2) _______ things to see and do. During August and September, you can visit Buckingham (3) _______. That’s where the queen lives most of the year. It has about 600 (4) _______, but you’ll see only state rooms where the queen entertains guests. In the morning, a colorful ceremony (5) _______ “changing of the guard” takes place in the palace courtyard. One group of palace guards (6) _______ off duty, and another troop arrives to replace them.

(44)______

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 :
Of the many sports that people play, most have evolved over time from simpler games or a combination of different games. Basketball is different in this (1)________ because it was a game specifically invented to be an indoor sport. Its purpose was not to be just fun and challenging. (2)_________, it was invented fortrack and field athletes to use in order to stay in shape during the winter, while also being relatively safe to play. The person who made up the game was a physical education teacher at a school in Springfield, Massachusetts named Dr. James Naismith. It only took Naismith two weeks to come (3)__________ the game. He took a basket that had originally held peaches and nailed it high up on the walls of a gymnasium. The players then used a soccer ball and to get it in the basket while being blocked by other players. Naismith’s reason for putting the basket high up on the wall came from his (4)_________ that more injuries in other games happened near where a goal was. In this case, the goal was the basket, so he believed the higher up it was, the safer the players would be. Eventually, the game progress like so many other sports did, and it became quite popular. A second basket was added, rules of play were (5)_________, and the sport of basketball as we know today was born

Read the text and choose the best answer (A, B, C or D) to each of the questions.
I was brought up in a very ordinary but very happy home with one elder sister, my mother and my father. The great love of my life since I was a small girl was writing, which only family thought was surprising because they didn't consider themselves educated people. I wasn't surprised though because my parents were great readers which is my idea of being educated. Anyway, I trained to be a nurse but whenever I had free time I wrote: poems, short stories, I even once wrote a novel called 'The Pleasure Principle' but I didn't feel comfortable writing longer pieces and I soon went back to my poetry. 
Then the strangest thing happened. I had my twenty-first birthday just a few days before and I was feeling very much that I wanted to change things in my life. I'd been nursing a very old woman for several months in a private ward, she told me that although she had-lots of relatives, no one came to visit her. Anyway, when she died she left me an enormous sum of money, nearly three-quarters of a million pounds! Of course when the lawyer rang me up and told me I just laughed and thought that my friends were playing a joke on me. So I put down the phone and went in to tell my mother the joke. 
But it wasn't a joke! All of a sudden, I was a very rich woman. Well, the first thing was that I was determined that I wouldn't waste the money. Of course I wanted to do something for my family, but all my dad said was 'We're not leaving this house after all the work I've put into the garden!' My mother agreed so all I did was give them something towards a new car and a new greenhouse. My sister was working abroad at this time and when I wrote to tell her the news and offer her some money she said it was my money and that she knew I would use it sensibly. None of this really came as a surprise because they've always had a sensible attitude towards money. 
But this left me a fortune on my hands to spend! It soon became obvious to me that much as I loved nursing, I loved writing more and that's how I got started. I went to America and did a degree in creative writing. I had a wonderful time and learned a great deal, not from the lecturers necessarily but mainly from other hopeful writers on the course. All this was a decade ago and I've now had several volumes of poetry published. I now want to do something to help other young poets so I'm thinking of setting up a small publishing company which I'll call Grace Park Books after the wonderful old lady who helped me fulfill my life's ambition!

According to the passage, all of the following are true EXCEPT

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:
Most journeys in Britain and the US are made by road. Some of these are made on public transport but most are by private car.
In Britain many people rely on their cars for daily local activities, e.g. getting to work, doing the shopping, and visiting friends. People living in urban areas may use buses, trains or, in London, the Underground, to get to city centres, mainly because traffic is often heavy and it is difficult to find anywhere to park a car. Some places in the country may have a bus only two or three times a week so people living there have no choice but to rely on their cars.
In the US large cities have good public transportation systems. The El railroad in Chicago and the underground systems of New York, Boston, San Francisco and Washington, DC are heavily used. Elsewhere, most Americans prefer to use their cars. Families often have two cars and, outside major cities, have to drive fairly long distances to schools, offices, shops, banks, etc. Many college and even high-school students have their own cars.
Long-distance travel in Britain is also mainly by road, though railways link most towns and cities. Most places are linked by motorways or other fast roads and many people prefer to drive at their own convenience rather than use a train, even though they may get stuck in a traffic jam. Long-distance coach/bus services are usually a cheaper alternative to trains, but they take longer and may be less comfortable. Some long-distance travel, especially that undertaken for business reasons, may be by air. There are regular flights between regional airports, as well as to and from London. A lot of freight is also distributed by road, though heavier items and raw materials often go by rail.
In the US much long-distance travel is by air. America has two main long-distance bus companies, Greyhound and Trailways. Amtrak, the national network, provides rail services for passengers. Private railway companies such as Union Pacific now carry only freight, though in fact over 70% of freight goes by road.
The main problems associated with road transport in both Britain and the US are traffic congestion and pollution. It is predicted that the number of cars on British roads will increase by a third within a few years, making both these problems worse. The British government would like more people to use public transport, but so far they have had little success in persuading people to give up their cars or to share rides with neighbours. Most people say that public transport is simply not good enough. Americans too have resisted government requests to share cars because it is less convenient and restricts their freedom. Petrol/gasoline is relatively cheap in the US and outside the major cities public transport is bad, so they see no reason to use their cars less.

Which of the following is NOT true according to the passage?