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The American southwest is full of deserts. If you ever go there, you might get to see a very strange event. We are talking something called the sailing stones. Sometimes, stones in the southwestern desert move by themselves. Wind doesn’t seem to push them. People and animals don’t touch them. However, these stones still move. Sometimes they travel more than a hundred meters. They always leave a trail in the sand behind them. This is useful because we can look at the trail and figure out how far a stone has moved. How is this possible? How can stones move all by themselves? Scientists have been studying this for years. People have offered all kinds of theories. One of the earliest theories was that wind pushes the stones. That theory isn’t correct, because some of the stones weigh more than 300 kilograms. When it seemed like there was no logical explanation for the sailing stones, people started coming up with crazier ideas. Some people said that aliens were moving the stones, and others said that clever people were playing a joke. Finally, in 2013, a scientist came up with an explanation for the sailing stones. This scientist normally studies weather on other planets, and when he heard about the sailing stones, he became interested in them. He found out that ice forms on the bottom of the stones. When that happens, even a very light wind can push the stone for long distances. To prove his theory, the scientist did an experiment. He put a rock in his freezer and let some ice form on it. Then, he put sand and a little water in a tray. Finally, he put his frozen rock on top of the sand. When he blew on the rock, it moved. Even when he blew very gently, he had no problems moving the rock. Here is something interesting about the sailing stones. Curious people visit the desert in the southwest to see them. A lot of those people don’t like to hear the scientific explanation for the sailing stones. Many people prefer to feel that the stones are still a mystery.
6. What does the last paragraph tell us?

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The temperature was constantly changing, and the elderly in my village come down with the flu

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Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes (1)______ ecosystems. If there is too (2) ______ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that (3) ______ it may also die or move away. Some changes are good for ecosystems. Some pine forests need (4) ______ for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds (5)______. Polluting the air, soil, and water can harm ecosystems. Building (6) ______ on rivers for electric power and irrigation can harm ecosystems (7) ______ the rivers. Bulldozing wetlands and cutting down (8) ______ destroy ecosystems. Ecologists are working with companies and governments to find better ways of (9) ______ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people (10)______ causing harm to ecosystems

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Most of us own modern gadgets such as mobile phones, or digital cameras. We may carry them round in our pockets, or attach them to our bodies. But not for much longer! So far designers have succeeded in (4) _____ tiny bits of technology di–rectly into our clothing. In actual fact “cyberfashion” is the latest trend! One example, the Musical Jacket, is already in the shops and stores. This jacket is silk. It is (5) _____ by a keyboard, also manufactured from fabric, which is connected to a tiny device (6) _____ plays music. At present, you have to touch a shoulder pad to hear the music. But in the future, you will be able to operate the device just by turning your wrist or walking! For many athletes, scientists have invented a smart shirt which measures your heart rate, body temperature and respiration rate! (7) _____, the most romantic piece of cyberfashion must be the Heartthrob Brooch. This item of jewellery, made from diamonds and rubies, has two miniature transmitters. They make the brooch glow in time to the beating of its wearer’s heart. If you meet someone (8) _____, your heart will beat faster – and your brooch will let everyone know how you feel!

Read the passage and choose the best answer.

The Vietnamese students take part (1) ______ different after - school activities. Some students play sports. They often (2) __________ soccer, table tennis or badminton. Sometimes they (3) ________ swimming in the swimming pools. Some students like music, drama and movies. They often practice playing musical instrument in the school music room. They (4) __________ in the school theater group and usually rehearse plays. Some are members of the stamp collectors’ (5) ________. They often get together and talk about their stamps. A few students stay at home and play video games or computer games. Most of them enjoy their activities after school hours.

(3) ______

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
The gap in male-female earning has great significance because more than 16  percent of U.S. households are (1) ______ by women. Low-paying jobs keep many  of these households in poverty. Women’s groups such as National Organization  for Women have demanded that equal opportunities and equal pay (2) ______ to  women. According to women’s (3) ______ Maggie McAnany, “It is imperative that  the government help to change the situation (of employment for women). We  cannot wait for the companies to (4) ______ themselves. Change must come (5)  ______ the law.”

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Fashion is no longer something that is just made of cloth or leather. These days it has become something that needs batteries and is often connected to the Internet. When it comes to high-tech fashion, it might be (31) _________ to your wrist or resting on the bridge of your nose, and it is doing a lot more than just (32) _________ you look stylish. Google was one of the first to burst on the scene with a fashionable item that was also very (33) _________. Google Glass, which looks like glasses, allows wearers to do all sorts of things, from seeing information in a simple viewer to simply saying out loud, “Take a picture.” What you are seeing in the picture that will be taken, (34) _________Google Glass heard you through its microphone and has a built-in camera. If you ask a question, you will (35) _________ the answer in the tiny screen displayed before one eye. Google Glass uses Bluetooth technology to communicate with a smartphone, so it is not a stand-alone item

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Sometimes our parents don't understand us. They don't understand some problems and things which are very important in teens' life; for example, the lifestyles of young people, piercing, tattoos, drugs, sex, relationship with friends and teachers. So, sometimes teens can't tell them about their private life. Some parents don't want to understand modern views, ideals and system of values.  Elderly people usually compare their childhood and youth with the present, and regard old times as better, always talking about "the good old days”. The young people, on the other hand, tend to think their times as the best. Teens look at the world with fresh eyes. Everything is new, interesting to them. Sometimes they cannot solve their everyday problems. But they want to cope with them by themselves. So, adults shouldn't prevent them from making their own mistakes.  People are said to become wiser with age. Sometimes, it is true and sometimes it is not. I think that you can meet a wise man among the old as often as among the young. It is false that when old age wisdom has come, useless illusions have disappeared. Sometimes when we talk to adults, a monologue is a preferred form of expressing your ideas in such talks. That's why some teens don't like to talk to adults.  I think that it's in people's nature to give advice. It seems to people that giving advice they can help somebody or put somebody on the right track. But if a person takes their advice and fails, he can blame an adult all of his life.  Our parents have their own ideas and views that their children don't share and understand. They think that their children won't find their place in life. They often say that now teens are very difficult to socialize with and dumpy. But children should settle all problems peacefully because they are their parents. They brought them up with loving care. And if children come to their parents for advice and help, they will do their best and help children to cope with problems and difficulties.
1. The passage mainly discusses ____

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Time management: two words that have me breaking out in a cold sweat. Why should I suddenly have to learn how to manage my time? Surely time had got on perfectly well for several millennia without requiring management, let alone by me. But my university tutor was adamant: time needed some managing and apparently it was up to me to do it.  First of all, let's be clear. I do have plenty of time to manage. As an arts student, I generally have 23 hours in the day that aren't given over to going to lectures. But I generally need somebody to tell me what I should be writing, so I go to lectures.  Perhaps I had "taken on too much"? I'd been elected to four committees, produced a play, applied for a part time job, hung around the college bar with my friends, and written the odd essay. But I thought I was coping well. Sure, there was the day when I did the research for an essay on the morning of deadline day and wrote it that afternoon, but that was a one off.  On second thoughts, maybe my tutor is right. It's difficult to give up what you're involved in but perhaps it's a good idea to sit back and have a breather once in a while. Even an arts student has to get down to some real work!
1. What was the writer's initial reaction to his tutor's ultimatum?

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Why do people like to chew gum? Some people say they like the taste.(31)________say they can think better if they chew gum. Some people chew it when they have some boring work to do. Others chew gum when they are nervous. Gum is a mixture of things. For many years gum companies made gum from chicle. Chicle is a natural gum from a tree in Mexico and Central America. Now companies use plastic and rubber made from petroleum (32)________of chicle. Gum must be soft so that you can chew it. A softener keeps it soft. The gum company makes the softener from vegetable oil. A sweetener makes the gum sweet. The sweetener is usually sugar. Then the company (33)________the flavor. Thomas Adams made the first gum from chicle in 1836. However , chewing gum was not new. The Greeks chewed gum from a tree (34)________2,000 years ago. Mayan Indians in Mexico chewed chicle. Indians in the Northeastern United States taught Europeans to chew gum from a tree there. People first made bubble gum in 1928. Children like to (35)________bubble with bubble gum. Some university students do too

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Geothermal energy offers enormous potential for direct, low-temperature applications. Unlike indirect applications, this new technology relies on the Earth's natural thermal energy to heat or cool a house or multifamily dwelling directly without the need to convert steam or other high-temperature fluids into electricity, using expensive equipment. A geothermal system consists of a heat pump and exchanger plus a series of pipes, called a loop, installed below the surface of the ground or submerged in a pond or lake. Fluid circulating in the loop is warmed and carries heat to the home. The heat pump and exchanger use an electrically powered vapor-compression cycle - the same principle employed in a refrigerator - to concentrate the energy and to transfer it. The concentrated geothermal energy is released inside the home at a higher temperature, and fans then distribute the heat to various rooms through a system of air ducts. In summer, the process is reversed: excess heat is drawn from the home, expelled to the loop, and absorbed by the Earth. Geothermal systems are more effective than conventional heat pumps that use the outdoor air as their heat source (on cold days) or heat sink (on warm days) because geothermal systems draw heat from a source whose temperature is more constant than that of air. The temperature of the ground or groundwater a few feet beneath the Earth's surface remains relatively stable – between 45°F and 70°F. In winter, it is much easier to capture heat from the soil at a moderate 50°F than from the atmosphere when the air temperature is below zero. Conversely. in summer, the relatively cool ground absorbs a home's waste heat more readily than the warm outdoor air. The use of geothermal energy through heat-pump technology has almost no adverse environmental consequences and offers several advantages over conventional energy sources. Direct geothermal applications are usually no more disruptive of the surrounding environment than a normal water well. Additionally, while such systems require electricity to concentrate and distribute the energy collected, they actually reduce total energy consumption by one-fourth to two-thirds, depending on the technology used. For each 1,000 hones with geothermal heat pumps, an electric utility can avoid the installation of 2 to 5 megawatts of generating capacity. Unfortunately, only a modest part of the potential of this use for geothermal energy has been developed because the service industry is small and the price of competing energy sources is low.
3. The word “submerged” in paragraph 2 is closest in meaning to _______ 

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Until fairly recently, explaining the presence of human beings in Australia was not such a problem. At the beginning of the twentieth century, it was thought that Aborigines had been on the continent for no more than 400 years. As recently as the 1960s, the time-frame was estimated to be perhaps 8,000 years. Then in 1969 a geologist from the Australian National University in Canberra was poking around on the shores of a long-dried lake bed called Mungo in a dry and lonely corner of New South Wales when something caught his eye. It was the skeleton of a woman sticking out slightly from a sandbank. The bones were collected and sent off for carbon dating. When the report came back, it showed that the woman had died 23,000 years ago. Since then, other finds have pushed the date back further. Today the evidence points to an arrival date of at least 45,000 years ago but probably more like 60,000. The first occupants of Australia could not have walked there because at no point in human times has Australia not been an island. They could not have arisen independently because Australia has no apelike creatures from which humans could have descended. The first arrivals could only have come by sea, presumably from Timor or the Indonesian archipelago, and here is where the problems arise. In order to put Homo sapiens in Australia you must accept that at a point in time so remote that it precedes the known rise of behaviourally modern humans, there lived in southern Asia a people so advanced that they were fishing inshore waters from boats of some sort. Never mind that they the archaeological record shows no one else on earth doing this for another 30,000 years. Next, we have to explain what led them to cross at least sixty miles of open sea to reach a land they could hardly have known was there. The scenario that is usually described is of a simple fishing craft probably little more than a floating platform - accidentally carried out to sea probably in one of the sudden storms that are characteristic of this area. This craft then drifted helplessly for some days before washing up on a beach in northern Australia. So far, so good. The question that naturally arises - but is seldom asked - is how you get a new population out of this. If it's a lone fisherman who is carried off to Australia, then clearly he must find his way back to his homeland to report his discovery and persuade enough people to come with him to start a colony. This suggests, of course, the possession of considerable sailing skills. By any measure this is a staggeringly momentous achievement. And how much notice is paid to it? Well, ask yourself the last time when you read anything about it. When was the last time in any context concerning human movements and the rise of civilisations that you saw even a passing mention of the role of aborigines? They are the planet's invisible people. A big part of the problem is that for most of us it is nearly impossible to grasp what an extraordinary span of time we are considering here. Assume for the sake of argument that the Aborigines arrived 60,000 years ago (that is the figure used by Roger Lewin of Havard in Principles of Evolution, a standard text). On that scale, the total period of European occupation of Australia represents about 0.3 percent of the total. In other words, for the first 99.7 per cent of its inhabited history, the Aborigines had Australia to themselves. They have been there an unimaginably long time.
4. What usually provides the explanation for the Aborigines arrival in Australia?

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Welcome to Trang An, Vietnam's newest UNESCO World Heritage Site, a place where the water is crystal clear and pink flowers bloom along the shallows. Temples rest on a precipice of rock and water. Here, for 30,000 years, people have lived amongst these limestone giants. To the unfamiliar, this area is a maze of confusing waterways and impassable hills, a place where one could easily disappear from the world. However, to the emperors of the 10th and 11th centuries, this was the ideal setting for a capital city where the inhabitants could be controlled and enemies rebuffed.  This combination of stunning natural beauty and ancient history has led Trang An to be recognised as Vietnam's eighth World Heritage Site. Unlike the previous seven, Trang An is notable for being the only UNESCO site in Vietnam to be classified for both its cultural beauty and natural integrity.  At the ticket office, we are met by the sight of thousands of wooden boats bobbing along the shoreline. Stepping gingerly into the closest dinghy, we are greeted by a young woman whose ability to paddle three adults - all in the midst of Christmas feasting - for three straight hours left me in awe of her strength. What followed was a string of beautiful caves of varying heights and lengths, interspersed with scenes of a peaceful beauty that can be hard to come by in Vietnam.  Dubbed ‘Halong Bay on land’, Trang An’s landscape is reminiscent of its coastal World Heritage neighbour. Dominated by similar karst geography, Halong Bay and Trang An both provide a stunning backdrop lo a tranquil boat cruise. Unlike Halong, however, the boats at Trang An are small, seating no more than five adults, and weekday crowds are minimal. We emerged from a particularly low cave opening and into a small cove ringed by flowering reeds and waterlilies. The steep limestone cliffs block all outside sounds. Underwater reeds stand tall in the clear water beneath our boat, their green spongy limbs waving gently in the current as we paddle past. Brown-and-gold fish dart between grass, their scales glinting in the sunlight, before plunging into the shadows of the towering hills above. Water movement is imperceptible, with the steep hillsides, plunging valleys and clear sky mirrored in its glassy surface. It is as though a parallel world of deep crevices and underwater mountains exists just below our feet.  A parallel world does, in fact, describe how it seemed as we floated through the caves of Trang An. The journey through the first hollow felt like stepping through the back of the wardrobe and entering Narnia. We were suddenly transported into a beautiful, magical world. So at odds with the industrial limestone factories that dominate the Ninh Binh landscape, this small pocket of serenity is surprising.  With more and more visitors flocking to Vietnam's World Heritage Sites, I worry that Trang An will suffer the consequences of unchecked mass tourism. We can only hope that tourism officials will learn from the experiences of other popular tourist destinations and ensure that this place remains as close to paradise as it was on our visit. 
2. The word "rebuffed" in the passage is closest in meaning to ____

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Unlike previous generations, millennials look further than job stability, competitive salaries and benefits to be committed and loyal to a company. They are driven by a sense of shared purpose, (25) _____ means they need to have a strong sense of their part in the „bigger picture’ to bring their best results to the workplace. And (26) _____ until now businesses are mostly focused on (27) _____ key consumer needs, what becomes clear when examining the global workforce trends by 2020 is that employee experience is equally important for company success . This is easily seen in a number of tech giants and industry leaders like Google, Facebook, SAP, Tumblr, Intuit, and others. These brands build their entire (28) _____ structure and organizational ethos around the experience of their employees. State-of-the-art office campuses, flexible hours and resting rooms are only some of the methods these enterprises leverage to keep their employee experience great. And more importantly, all of these are fast becoming the norm in (29) _____ to today’s workplace trends for companies that understand millennials and know that the 2020 workplace needs to be more dynamic, purpose-driven and versatile

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In 1985, there was a terrible famine in the African country of Sudan. Richard Curtis, a British comedy writer, and his friend, Alexander Mendis saw the news reports and wanted to make (25) _____. They began a charity called Comic relief, with the help of charity worker Jane Tewson. In 1988, the charity had an idea of selling red plastic noses to raise money. It was the (26) _____ success and selling red noses became a regular part of the Britain’s charity to organize sponsored events. In 1997, BBC television supported Comic Relief with a whole afternoon and evenings of special TV programmes, calling it Red Nose Day. People around Britain organized fund-raising events around the same time and sent their money to Red Nose Day. In (27) _____, the event raised over £27 million for charity. Since it began, Comic Relief has raised more than £600 million, (28) _____ the generosity of the British public and the help of the celebrities (29) _____ take part. The charity produces books, CDs and other items help to raise money. In 2001, JK Rowling wrote two books for Comic Relief based on famous Harry Potter novels and all the money from the sales went to the charity

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Waves don’t always (31) _________ the beaches with enough height or force to allow a sport such as surfing. The surfers in the 1960s looked for something that would allow them to have the thrill of riding waves without having to actually go in the water on days when it looked more like a (32) _________ rather than a series of hills reaching the shore. The simple solution was to put wheels on a board, and before long, a new style of surfing was born, but it was done on land. Looking back, it is easy to see how skateboarding could become more popular than even surfing. To surf you need coastline and waves, but to skateboard, all you need is a paved surface. As its popularity grew, skateboarding took (33) _________ new forms, and adventurous skateboarders tried new stunts. Skateboard parks started popping up throughout several countries, and there was plenty of innovation in skateboards. Early skateboards had metal wheels, usually (34) _________ from roller skates. Clay wheels replaced these, followed by the special urethane wheels that are used today. The innovations with wheels made the sport safer in many ways, but they also (35) _________ the stunts to become more and more extreme

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The philosopher Aristotle said, “In poverty and other misfortunes of life, true friends are a sure refuge. They keep the young out of mischief; they comfort and aid the old in their weakness, and they incite those in the prime of life to noble deeds. “Growing up”, my mother always used to tell me “your friends are a reflection of you”. I did not quite understand this (20) _____ I started meeting individuals who kept, not so healthy friends in their lives and suddenly, as a young teenager, I learned to understand that the friends I keep in my life (21) _____ who I am and desire to be as a person and therefore I have learned to choose my friends wisely over the years. I do not care about the superficial (22) _____ such as looks, money, success or status but rather I emulate those (23) _____ bring laughter, joy, honesty and who can be there for me and also give me a firm kick in the butt when I need it. I always find it intriguing to meet friends of people I know because I can really get a sense of that person by the company they choose to (24) _____ in their life

Choose the letter A, B, C or D to answer these following questions

Bang is a student. He’s 12 years old. He studies at Yen Hoa primary school. He usually leave home for school at 6.30 a.m. He lives quite near the school, so he usually walks to school with some of his friends. But today his father is driving him to school. He loves Literature and English. Today he has Physics, Chemistry and English. At school, he often plays volleyball with his best friends.

Why does he walk go to school on foot?

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Many of the major supermarket chains have come under fire with accusations of various unethical acts over the past decade. They've wasted tons of food, they've underpaid their suppliers and they've contributed to excessive plastic waste in their packaging, which has had its impact on our environment. But supermarkets and grocers are starting to sit up and take notice. In response to growing consumer backlash against the huge amounts of plastic waste generated by plastic packaging, some of the largest UK supermarkets have signed up to a pact promising to transform packaging and cut plastic wastage. In a pledge to reuse, recycle or compost all plastic wastage by 2025, supermarkets are now beginning to take some responsibility for the part they play in contributing to the damage to our environment with one major supermarket announcing their plan to eliminate all plastic packaging in their own-brand products by 2023. In response to criticisms over food waste, some supermarkets are donating some of their food surplus. However, charities estimate that they are only accessing two per cent of supermarkets' total food surplus, so this hardly seems to be solving the problem. Some say that supermarkets are simply not doing enough. Most supermarkets operate under a veil of secrecy when asked for exact figures of food wastage, and without more transparency it is hard to come up with a systematic approach to avoiding waste and to redistributing surplus food. Some smaller companies are now taking matters into their own hands and offering consumers a greener, more environmentally friendly option. Shops like Berlin's Original Unverpakt and London's Bulk Market are plastic- tree shops that have opened in recent years, encouraging customers to use their own containers or compostable bags. Online grocer Farmdrop eliminates the need for large warehouses and the risk of huge food surplus by delivering fresh produce from local farmers to its customers on a daily basis via electric cars, offering farmers the lion's share of the retail price. There is no doubt that we still have a long way to go in reducing food waste and plastic waste. But perhaps the major supermarkets might take inspiration from these smaller grocers and gradually move towards a more sustainable future for us all.
1. Which is the most suitable title for the passage?

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Thailand's most celebrated festival is the Songkran Festival. It starts on April 13 and lasts between three to ten days, depending on where you are in Thailand. The word Songkran is from Sanskrit, meaning the beginning of a new solar year.  The festival begins on April 13 and everyone is awakened at dawn to the sound of firecrackers used to drive away evil spirits. This is the day when everything is scrupulously cleaned from the self, clothes, Buddha images, to houses, shops and streets in preparation for the New Year.  April 14 is the day between the old year and the new year. It is customary not to quarrel or use harsh words on one another. The morning is spent shopping and preparing food for the following day, while the afternoon is reserved for visiting a temple in the neighborhood. It is imperative that they carry a fistful of sand with them to compensate for the dirt that they have carried away from the temple during their visits throughout the year. The sand is then sculpted into stupa-shaped piles.  April 15 marks the New Year's Day called Wan Phya Wan. It is a day of great importance. It is customary to visit the temple early in the morning to take food to the monks, as a form of merit making and later in the afternoon to return to place small banners, known as Thung, on the top of the stupas built the day before.  After that, visits to family and relatives are carried out. The gifts during the visit include areca nuts, clove leaves, turmeric water and acacia oil. Family members ask for forgiveness from their respected elders for any wrong doings they may have committed throughout the year and to receive their blessings for the year to come. At the end of this ceremony, a little water is sprinkled onto the hands and heads of the old people as a blessing and then quite a lot is thrown at the rest of the family in anticipation of the water wars that are to follow.  Traditionally water should be thrown on April 16 but nowadays it is not unusual for water to be thrown throughout the whole of the Songkran festival. Armed with high-powered water pistols, bowls, buckets or anything that will hold water revelers gather on the streets to throw water at one another. Even the policemen directing traffic are not spared. Each and every participant is expected to receive the 'blessing' with good humor.  If you want to stay dry and still do not want to miss the fun, you can always view the scene from inside an air-conditioned tourist bus - just remember not to open the windows.  To attract tourists, other activities are held in big cities. These include the sand-stupa building contests, local cultural performances and Miss Songkran Beauty Queen Contests. Demonstrations of Thai cooking and handicraft making are also held at well-known hotels in cities like Bangkok
1. According to the passage, the Songkran Festival ____

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Polar bears are being increasingly threatened by the effects of climate change, but their disappearance could have (26) _______ consequences. They are uniquely adapted to the extreme conditions of the Arctic Circle, (27) _______ temperatures can reach -40°C. One reason for this is that they have up to 11 centimetres of fat underneath their skin. Humans with comparative levels of adipose tissue would be considered obese and would be likely to suffer from diabetes and heart disease. (28) _______ the polar bear experiences no such consequences. A 2014 study by Shi Ping Liu and colleagues sheds light on this mystery. They compared the genetic structure of polar bears with (29) _______ of their closest relatives from a warmer climate, the brown bears. This allowed them to determine the genes that have allowed polar bears to survive in one of the toughest environments on Earth. Liu and his colleagues found the polar bears had a gene known as APOB, which reduces levels of low-density lipoproteins (LDLs) - a form of 'bad' cholesterol. In humans, mutations of this gene are (30) _______ with increased risk of heart disease. Polar bears may therefore be an important study model to understand heart disease in humans