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 mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure soil texture, the sand, silt, and clay particles are sorted out by size and weight. The weights of each size are then expressed as a percentage of the sample weight.
In the field, soil texture can be estimated by extracting a handful of sod and squeezing the damp soil into three basic shapes; cast, a lump formed by squeezing a sample in a clenched fist; thread, a pencil shape formed by rolling soil between the palms; and ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provides the basis for a general textural classification. The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.
Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered through a group of sieves, each with a different mesh size, the particles become grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately; therefore, in soils with a high proportion of clay, the fine particles are measured on the basis of their settling velocity when suspended in water. Since clays settle so slowly, they
are easily segregated from sand and silt. The water can be drawn off and evaporated, leaving a residue of clay, which can be weighed.

It can be inferred from the passage that the sediment sieve has an advantage over the hand test in determining soil texture because         .

Read the passage below carefully, and then choose the best answer:
No More Polar Bears?
We all know that the Earth is getting warmer and warmer. This problem is called “global warming”. We also know that global warming is causing a lot of problems. Ocean levels are getting higher and higher. Because ocean levels are getting higher, storms are getting stronger and stronger. This list of problems goes on and on. Animals are suffering a lot because of global warming. Polar bears are suffering more than most animals. This is because polar bears live in the North Pole. In the North Pole, global warming is making ice melt. Polar bears hunt from large pieces of floating ice. They jump off the ice and hunt for food. Polar bears have to swim and find these floating pieces of ice. These days, they have to swim farther to find the floating ice. Many of them don’t have enough energy. They get too tired, and they die in the water. Polar bears are suffering because of other problems, too. Pollution makes their water dirty. Many countries go to the North Pole to look for oil and gas, and they damage the environment of the bears. In addition, when ships sail through the North Pole, they cause a lot of damage. Finally, people hunt and kill too many polar bears. However, melting ice is definitely the biggest problem. Right now, there are about 25,000 polar bears in the world. If global warming continues, there may be only about 12,000 in the year 2050. By the year 2080, that number might be much smaller. It is important to study polar bears. When we learn about polar bears, we also learn about the health of the North Pole. If polar bears are doing well, then the environment in the North Pole is probably healthy. If polar bears are suffering then there are probably serious problems in the North Pole. Right now, governments around the world are working to help polar bears. There are new laws that protect polar bears. However, if global warming continues to get worse, polar bears may disappear forever.
2. Why do polar bears have to swim farther?

Choose the letter A, B, C or D to complete the sentences with given words:
If/ it/ fine/ tomorrow, we/ go/ the/ dentist.

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
GIL DURDIN Director
Newline Shopping Center
Dear Mr. Durdin,
In high-traffic establishments such as yours, floors are used around the clock as deliverymen bring goods and people come and go into the building. Given the (1)------- use, the floors must be very durable to remain usable over the years. To (2)------- this matter, Floorbest, Inc. has designed a special protective floor system specially for supermarkets and commercial centers like yours. We are the speediest installer in your region! After you make an order, a Floorbest installer will visit your location within two business days to take the exact specifications for your business. Installation of the new flooring system (3)------- within four weeks. To request a free estimate, please call today at 373-4555.
CLYDE PARKER Manager Floorbest, Inc

Read the following passage and choose the best answer (A, B, C, D):
Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine that would do all the necessary jobs around the house. If boring and repetitive factory work could be (1) ________ by robots, why not boring and repetitive household chores too? For a long time the only people who really gave the problem their attention were amateur inventors And they came up against a major difficulty. That is, housework is actually very complex It has never been one job it has always been many. A factor robot (2) ________ one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot on the other hand, has to do several different (3) ________ of cleaning and carrying jobs and also has to cope (4) ________ all the different shapes and positions of rooms, furniture, ornaments, cats and dogs. (5) ________, there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the software- the programs that will operate the machine

Read the passage below carefully, and then choose the best answer:
The Greatest Light Show on the Earth
If you are a fan of amazing visual displays, planetariums around the world offer some entertaining laser-light shows that are often accompanied by popular music. Yet if you want to see the world’s greatest light show, you won’t be able to catch it indoors. Instead, you will have to head to one of the Poles. In certain spots, you will be treated to colourful streaks of light dancing across the sky. This incredible display is the aurora borealis, and every year people from all corners of the globe flock to witness its wonders firsthand. The Aurora Borealis, or Northern Lights, got its official name in 1621. The name combines the name of the Roman goddess of the dawn, Aurora, and the Roman god of the north wind, Boreas. In ancient times, the aurora completely baffled people’s minds, as science was far more primitive than it is today. Nevertheless, they created many myths to explain them. The Vikings believed the lights were the reflection of dead maidens. The Scots thought they were supernatural beings battling in heaven. Meanwhile, Eskimos thought that the lights were dead souls, and when the colours changed, it was their attempt to contact living friends and relatives. It was not until 2008 that a team of scientists from ULCA finally concluded with certainty what the true cause of these dancing light is. The process begins when solar winds carry charged particles from the Sun through space and into the Earth’s atmosphere. When these charged particles enter the Earth’s atmosphere, they are magnetically attracted to the Earth’s poles. During their journey to these points, they come in contact with nitrogen and oxygen atoms in the sky. These collisions are what cause the aurora. The heights at which the collisions occur determine the colours of the individual lights. For example, when the solar winds collide with nitrogen at least than 96 kilometres above the Earth’s surface, the lights will be blue. If the same collision occurs above 96 kilometres, however, the light will be purple. Or, if the solar wind particles collide with oxygen, the colours produced will be either red or green. However, merely understanding how the aurora works does not do this phenomena justice. To truly appreciate the full splendor of the aurora, you will have to see this Natural Wonder of the World in person.
4. The word “baffled” in paragraph 2 is closest in meaning to _________.

The ASEAN Security Community (ASC) aims to ensure that countries in the region live at _____ with one another and in a democratic and harmonious environment.

(492)_______

Choose the best answer:
It's time governments ______ something to limit population growth.

Rewrite sentences without changing the meaning
Interacting with friends through the internet is fun.

She intended to quit her job to stay ____ home and look ___ her sick mother.

(319)________

Read the following passage and choose the best answer (A, B, C, D):
The ubiquitous bar code, developed more than twenty years ago, is not a stagnant product. On the contrary, the technology has been improved so that it can be used more efficiently. Much less expensive than a computer chip, the bar code can hold more information than it had in the past by adding a second dimension to the structure. The bar code consists of a series of parallel vertical bars or lines of two different widths, although sometimes four widths are used, printed in black on a white background. Barcodes are used for entering data into a computer system. The bars represent the binary digits 0 and 1, just like basic computer language, and sequences of these digits can indicate the numbers from 0 to 9, which can then be read by an optical laser scanner and processed by a digital computer. Arabic numbers appear below the code. The traditional bar code has been used to monitor skiers at ski lifts and to determine price and perform inventory control on groceries, drugs, medical supplies, manufactured parts, and library books to name a few. The bar code used on grocery products, introduced in the 1970s, is called a universal product code (or UPC) and assigns each type of food or grocery product a unique code. The five digits on the left are assigned to a particular manufacturer or maker and the five digits on the right are used by that manufacturer to identify a specific type or mark of product. Traditional single dimension bar codes are not readily customizable because there is little extra space. The two-dimensional bar code, with an information density of 1,100 bytes, allows a considerably greater amount of information to be coded than does the traditional bar code, including customized information. [A] It also has built-in redundancy, meaning that the identical information is duplicated on the same code. [B] Therefore, if the code is damaged, it can still be read. [C] The technology even allows pictures or texts to be contained within the code, as well as bar code encryption. [D] The new technology dramatically reduces the errors of the single dimensional bar code and reduces the enormous costs that some companies have reported in the past. 
8. The word "widths" in the second paragraph refers to: 

Read the passage below carefully, and then choose the best answer:
It’s in Your Genes
Every human being has about 25,000 genes. Your genes are part of your DNA. They give your body instructions on how to develop. For example, if your genes tell your body to build long, thin fingers, then you will have long, thin fingers. Your genes come from your parents, and they decide everything about you. They decide your hair colour, your eye colour, your height, and so on. Genes are still a bit of a mystery to scientists, but they are learning new things about them all the time. One issue that people often debate is this: Do our genes influence our personalities? These days, most people agree that the answer to this question is yes. Recent studies have shown that genes especially influence our self-control and our sense of purpose. Your sense of purpose is your desire to have goals in your life. If a person really wants to accomplish something and do well in life, he or she has a sense of purpose. A person who does not care about goals has no sense of purpose. Although scientists agree that our genes influence our personalities, there is another question. How much do they influence us? Can we control ourselves, or do our genes control us? People everywhere are still debating this issue. So far, we don’t really have an answer. Genes also affect your health. If a gene has a problem, it is called a mutated gene. Some mutated genes can cause diseases. That is why if a person has a certain health problem, his or her child is more likely to have that same problem. The child also has the mutated gene. As scientists and doctors learn more about genes, they are also developing a new kind of medicine: gene therapy. Therapy is help for a mental or a physical problem. Gene therapy means fixing or replacing mutated genes. Scientists are still experimenting on gene therapy. It is possible that in the future, gene therapy will help doctors prevent and cure diseases that are caused by mutated genes.
7. The word “mutated” in paragraph 5 is closest in meaning to _________

Choose the best answer:
Mary is my friend. ………… is very kind.

Read the passage below carefully, and then choose the best answer:
The Most Powerful Force in Space
A black hole is a spot in space that has incredibly powerful gravity. A hole’s gravity is so strong that it pulls everything nearby into it. It can pull stars, planets, and other things. Nothing can escape a black hole. In fact, they are so powerful that even light cannot escape them. Scientists first started talking about black holes in the year 1783. That year, one scientist said that in the universe, there might be places with gravity strong enough to trap light. However, that scientist didn’t use the term “black hole”. The term “black hole” was invented in 1967. Black holes are formed when a star dies. When a star dies, it collapses. When that happens, a huge amount of matter crowds into a very small space. The matter becomes very, very dense. How much matter are we talking about? Imagine a star that is the size of ten suns. Imagine fitting that amount of matter into New York City. That is what a black hole is like. Its gravity is so powerful because it has so much matter. However, not all black holes are huge. Scientists believe that some black holes are the size of atoms. Although these black holes are tiny, they might have the same amount of matter that a mountain has. We can’t see black holes because they don’t have any light. They are completely invisible. Scientists can guess where black holes are by studying nearby stars and planets. If gravity seems to be pulling the stars and planets to one spot, then scientists believe that the spot is a black hole. Some people wonder if a black hole could ever destroy the Earth. We do not need to worry about that. There is no black hole that is close enough to destroy the Earth. The closest black hole is about 7,800 light years away. In addition, the sun is not big enough to create a black hole.
4. Which of the following CAN’T be inferred from the passage?

Rewrite the sentence without changing the meaning
His bad mark in the exam was the consequence of his laziness.

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
Carefully conducted studies that have followed the children of working mothers have not been able to show any long-­‐term problems, compared (1)_____children whose mothers stay at home. My personal (2) _____is that mothers should be allowed to work if they wish. Whether we like it or not, there are a number of mothers who just have to work. There are many who must work out of pure economic (3) _____. Many mothers are not born to be full-time parents. After a few months at home with a much loved infant, the feel trapped and isolated. There are a number of options when it refers to choosing childcare. These range from child minders and nannies through to Granny or the kind of lady across the street. In reality, (4) _____ many parents do no have any choice; they have to accept anything they can get. Be prepared! No (5)_____ how good the children may be, some children are going to protect wildly if they are left. This is a (6) _____ normal stage of child development. Babies separate well in the first six months, but soon after that they start to get a crush on Mum and close family (7)_____. Make sure that in the first week, you allow plenty of time to help your child (8)_____. All children are different. Some are independent,(9) _____ others are more attached to their mothers. Remember that if you want to do the best for your children, it’s not the quantity of time you spend with them, it’s the (10)_____ that matters

Read the passage below carefully, and then choose the best answer:
Make Home a Little Nicer
Some people think that if they don’t have a yard, they can’t keep a garden. Fortunately, that’s not true. For people who live in apartment buildings, there is another option: rooftop gardens. A rooftop garden is just a garden that you keep on your roof. Rooftop gardens are very popular in cities. Most building roofs go to waste – people don’t use that space for anything. Putting a garden on your roof is a nice way to turn an empty space into something that is pretty and relaxing. Rooftop gardens are not a new idea. About 2,600 years ago, people in Ancient Mesopotamia planted rooftop gardens. There were similar gardens in Ancient Rome and Ancient Egypt. These gardens had a very important purpose. Many ancient cities had walls. The enemy army usually tried to destroy the city’s food, so the people in the city kept their gardens on top of their walls. That way, they could continue to grow food. Today’s rooftop gardens don’t keep us alive, but they still have nice benefits. Plants absorb heat, so if there are a lot of them on a rooftop, they make the whole building cooler. As a result, people in the building use the air conditioning less which means they use less electricity. One study said that if every roof in Tokyo had a garden, the city would save more than one million dollars a day on electricity. Rooftop gardening is harder than regular gardening. Here are some tips. First of all, be safe. Build a fence around your garden. You don’t want the wind to blow plants off your roof! Also, remember that rooftop gardens get more sun. If you have a plant that shouldn’t get too much sun, remember to put it in the shade sometimes. There are many other things that you need to know before you start a rooftop garden. Do some research and then give it a try. You’ll make your little part of the city much nicer.
5. The word “they” in paragraph 4 refers to _________

Pete was born and brought up in Cornwall and he knows the place like the  __________

(111)______

Read the passage below carefully, and then choose the best answer:
The LED Lighting Revolution
If you have picked up any electronics magazines recently, you have probably heard about LEDs; yet chances are, you probably don’t realize why they are so special. The truth is that these tiny light bulbs are helping to improve watches, remote controls, televisions, and a host of other projects. Diodes are components that enable energy to flow in one direction, while simultaneously blocking the current from the opposite direction. This is similar to how a valve works on a faucet. If electronic manufacturers require currents to flow in several directions, then multiple diodes will be included in the circuit design. With LEDs, every time a current passes through them, a light is emitted. LED is short for light-emitting diode. Although they have only recently waves in the past decade or so, early models have been around since 1962. There are several benefits that LEDs offer when compared to incandescent or fluorescent lighting. For starters, they have extremely long-life spans in the range of l00,000 hours even in the toughest conditions. They also require far less energy than power sources, which can save users money over the long run. Since LEDs don’t contain moving parts like other bulbs, they can withstand heavy impacts without getting damaged. Finally, they don’t require any _warm-up time_ so they instantly light up when switched on. The only drawback is that they are still a more expensive to purchase at the moment. LEDs were first used on digital clocks, but they have come a long way since then. They have certainly done a lot to improve TV technology. LED TVs have been a hit because they can be built extremely thin, yet also offer power-saving benefits. LED TVs also provide a wider range of colour, which allows for more lifelike and vivid images. In the future, organic LEDs, or OLEDs, will bring additional benefits for viewers. OLEDs are even more flexible than LEDs, so manufacturers will be able to create bent display screens and lights. Therefore, you will be able to roll up your living room TV set and pack it in your suitcase. In other words, LED and OLED technology will likely be lighting up your life for years to come.
4. The word “_this_” in paragraph 2 refers to ________

Read the passage below and choose one correct answer for each question.

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 grey 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 got short brown hair and green eyes. She likes bird watching and travelling too, so whenever my parents are able to they go some places interesting for nature watching. Since we 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 seventy- eight 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 are smokers, which was really a great tragedy because I didn’t get a chance to know them. My other grandmother died just a few years ago. I also have a lot of aunts, uncles, and cousines. The cousine 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 the 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 seems they always have some projects 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 I have a family like ours.

What is the writer’s father?

Read the passage below carefully, and then choose the best answer:
Is It Safe?
Fracking is a way of getting energy from the ground. First, a special liquid is put into the ground. This liquid cracks rocks under the ground. After the rocks are cracked, oil moves through the cracks. Then it is much easier to take the oil from the ground. Fracking was started in 1947. These days, we are doing more and more fracking. That is why everyone is suddenly talking about it. A lot of people say that fracking is a good way to get energy. There is some gas that is very difficult to take from the ground. If we didn’t use fracking, we would not be able to get this oil. They say that because the world need more energy, we have to use fracking. Also, it is said that fracking creates a lot of jobs. However, many people are against fracking. They say that fracking’s “special liquid” pollutes the ground, the water, and the air. People who live near fracking areas could have health problems. Moreover, fracking is very loud. In some countries, fracking is now illegal. The first country to make fracking illegal was France. They did that in 2011. In other countries like England, fracking is legal, but there are many rules that control it. Other countries are waiting to learn more about fracking before they decide whether or not to allow it. However, fracking is very big in the United States. The US is number one fracking country in the world. People who support fracking say that it can be very safe. They say that first, we need strong laws to make sure that fracking is always done safely. Second, they say that fracking needs safe methods and good technology. It is said by many that after we develop these things, fracking will be great for the whole world. However, other people want fracking to be illegal everywhere. They say that it will never be safe. We still don’t know enough about fracking. After we learn more about it, we can decide whether it is really a safe way to get energy or not.
3. All of the following are true about fracking EXCEPT that __________