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I’m sorry. I have forgotten ………the letter for you.

 

A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometres in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the tune it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word "radar" in fact gets its name from the term "radio detection and ranging". "Ranging" is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots radar is essential for air traffic control tracking ships at sea, and for tracking weather Systems and storms.

The word "shouts" in the passage most closely means.................................

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It’s often said that we team things at the wrong time. University students frequently do the minimum of work because they’re crazy about a good social life instead. Children often scream before their piano practice 5 because it’s so boring. They have to be given gold stars and medals to be persuaded to swim, or have to be bribed to take exams. But the story is different when you’re older.
Over the years, I’ve done my share of adult learning. At 30, I went to a college and did courses in History and English. It was an amazing experience. For starters, I was paying, so there was no reason to be late - I was the one frowning and drumming my fingers if the tutor was late, not the other way round. Indeed, if I could persuade him to linger for an extra five minutes, it was a bonus, not a nuisance. I wasn’t frightened to ask questions, and homework was a pleasure not a pain. When I passed an exam, I had a big meal, not for my parents or my teachers. The satisfaction I got was entirely personal.
Some people fear going back to school because they worry that their brains have got rusty. But the joy is that, although some parts have rusted up, your brain has learnt all kinds of other things since you were young. It has learnt to think independently and flexibly and is much better at relating one thing to another. What you lose in the rust department, you gain in the maturity department.
In some ways, age is a positive plus. For instance, when you’re older, you get less frustrated. Experience has told you that, if you’re calm and simply do something carefully again and again, eventually you’ll get the hang of it. The confidence you have in other areas - from being able to drive a car, perhaps - means that if you can’t, say, build a chair instantly, you don’t, like a child, want to destroy your first pathetic attempts. Maturity tells you that you will, with application, eventually get there.
I hated piano lessons at school, but I was good at music. And coming back to it, with a teacher who could explain why certain exercises were useful and with musical concepts that, at the age of ten. I could never grasp, was magical. Initially, I did feel a bit strange, thumping out a piece that I’d played for my school exams, with just as little comprehension of what the composer intended as I’d had all those years before. But soon, complex emotions that I never knew poured out from my fingers, and suddenly I could understand why practice makes perfect.

All of the following are true about adult learning 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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

It’s probable that the next paragraph would discuss ________.

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Vegetables are parts of (1) __________ that are consumed by humans or other animals as food. The original meaning is still commonly used and is applied to plants collectively to refer to all edible plant matter, (2) __________ the flowers, fruits, stems, leaves, roots, and seeds. Originally, vegetables were collected from the wild by huntergatherers and entered cultivation in several parts of the world, probably during the period 10,000 BC to 7,000 BC, when a new agricultural way of life developed. At first, plants which grew locally would have been cultivated, but as time went on, trade brought exotic crops from (3)__________ to add to domestic types. Nowadays, most vegetables are grown all over the world as climate permits. Crops may be cultivated in protected environments in less suitable locations, and global trade in (4) __________ products allows consumers to purchase vegetables grown in faraway countries. The scale of production varies from subsistence farmers supplying the needs of their family for food, to agribusinesses with vast areas of single-product crops. Depending on the type of vegetable concerned, harvesting the crop is followed by grading, storing, processing, and marketing. Vegetables can be eaten (5) __________ raw or cooked and play an important role in human nutrition, being mostly low in fat and carbohydrates, but high in vitamins, minerals and dietary fiber. Many nutritionists encourage people to consume plenty of fruit and vegetables, five or more portions a day often being recommended

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In all the debate about conservation of natural landscapes, we must not forget that the 19th century also saw the development of interest in the cultural past. Although archaeology was around 100 years old at this point, at least in the Old World, it was largely an exercise in treasure hunting - digging up the treasures of the past as curiosities for museums or for the private collections of those who funded the dig. Changes in attitudes and law throughout the 19th century meant that monuments and artefacts were becoming part of the study of the past, no longer merely trinkets and curiosities, but indicators of a culture’s development and identity. Modern archaeology would not arrive until the 20th century and the concept of an archaeological landscape is younger still. The first laws to protect and conserve cultural heritage came into place in the late 19th and early 20th centuries in the developed countries. In the US, the first such law was the Antiquities Act in 1906 which gave the office of president the power to set aside areas of land as protected cultural assets, known as “National Monuments”. This law was in place until 1979 when it was replaced with the Archaeological Resources Protection Act but several other laws came into place before then that  required archaeologists to label and give proper contexts to monuments and artefacts. There was also a global movement to protect by law and provide resources and funds for monuments that were nationally important, but also those deemed significant to human civilization as a whole. Founded in 1945, has many responsibilities, one of the most important as far as archaeological conservation is concerned is the World Heritage List. The list began in 1975 as a recognition of globally important sites. The first 12 added on that first day included: L’Anse Aux Meadows in Canada, The Galapagos Islands, Quito in Ecuador, Krakow, and Mesa Verde National Park in the US. Today, there are over 1,000 cultural monuments and natural landscapes on this list. In the 21st century, it is common for countries to have laws in place to protect monuments, sites, and landscapes of cultural or historical importance and governmentestablished charities or government departments assigned to their management, upkeep or conservation. The threats to them and their conservation go beyond the issues of the 19th century (plunder and theft)
5. According to paragraph 3, what is NOT mentioned about the World Heritage List?

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Allowing adolescents to make more of their own choices was found to be the most common strategy used to encourage independence. Many parents also reported that they are pushing their teenager by no longer doing certain things for them. Regardless of their effort, one quarter of parents surveyed still believe they are the main barrier to their teen’s independence because they are failing to hand over more responsibility. “As children become teenagers, the role of parents shifts to helping them gain the knowledge and experience they will need for being independent adults,” explained poll codirector Sarah Clark. “This process of transitioning from childhood to adulthood includes everything from preparing for work and financial responsibility, to taking care of one’s health and well-being. Our poll suggests that parents aren’t letting go of the reins as often as they could be to help teens successfully make that transition.” The new survey from the University of Michigan involved nearly 900 parents with at least one teenager between the ages of 14 and 18. Overall, 60 percent of the respondents attributed their child’s lack of independence to characteristics such as not being mature or knowledgeable enough to take on more responsibility. By contrast, 25 percent of parents admitted that it is faster and less of a hassle to do things themselves. “It is clear that parents recognize tension in helping teens move toward independence, and they agree that valuable learning experiences often result from a poor decision,” said Clark. “Some parents justify taking control over certain responsibilities because they don’t believe their teen is ‘mature enough.’ Parents need to carve out more time for supporting teens in their transition to adulthood.”  
2. According to paragraph 1, what is the problem for the parents regarding children independence?

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Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth. Overpopulation is caused by number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which results in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life. The effects of overpopulation are quite severe. The first of these is the depletion of resources. The Earth can only produce a limited amount of water and food, which is falling short of the current needs. Most of the environmental damage being seen in the last fifty odd years is because of the growing number of people on the planet. They are cutting down forests, hunting wildlife in a reckless manner, causing pollution and creating a host of problems. Those engaged in talking about overpopulation have noticed that acts of violence and aggression outside of a war zone have increased tremendously while competing for resources. With the overuse of coal, oil and natural gas, it has started producing some serious effects on our environment. Rise in the number of vehicles and industries have badly affected the quality of air. Rise in amount of CO2 emissions leads to global warming  Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth. Overpopulation is caused by number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which results in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life. The effects of overpopulation are quite severe. The first of these is the depletion of resources. The Earth can only produce a limited amount of water and food, which is falling short of the current needs. Most of the environmental damage being seen in the last fifty odd years is because of the growing number of people on the planet. They are cutting down forests, hunting wildlife in a reckless manner, causing pollution and creating a host of problems. Those engaged in talking about overpopulation have noticed that acts of violence and aggression outside of a war zone have increased tremendously while competing for resources. With the overuse of coal, oil and natural gas, it has started producing some serious effects on our environment. Rise in the number of vehicles and industries have badly affected the quality of air. Rise in amount of CO2 emissions leads to global warming  
4. What is the main idea of paragraph 3?

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Environmentalists often fear that tourists will trample all over sensitive natural resource areas, but tourism may bring the needed and only economic incentives to help drive conservation, said Bynum Boley. Ecotourism and natural resource conservation already have a mutually beneficial relationship that is ideal for creating a sustainable partnership. “Ecotourism destinations benefit in the form of enhanced tourism competitiveness from the protection of quality natural resources,” he said. "Meanwhile, the conservation of these natural resources is increasingly valued since these pristine natural resources are the foundation of the ecotourism industry and the driver of all economic benefits associated with ecotourism." Tourism is a $7.6 trillion global industry, provides 277 million jobs and is a primary income source for 20 of the world’s 48 least-developed countries. It also subsidizes environmental protection and helps protect, conserve and value cultural resources that might otherwise be undervalued by the host community, Boley said. In the newpaper, Boley and coauthor Gary Green said that despite past tension between the tourism industry and environmentalists, the two should team up as allies to fight off increasing conversion of land away from its natural state. Ecotourists not only provide a boost to the economy in such places, they can also motivate landowners into keeping the environment in its natural state instead of converting it into something unsustainable. They could also influence the public perception of conservation, Boley explained, which does not often favor environmental protection. “The public has become increasing less prone to respond to environmental messages,” he said. “Economic messages are needed in order to attract the public’s interest.” Too often, Boley and Green said, unique natural resource areas are converted into urban, suburban and agricultural developments without considering their ecotourism potential. In addition to the lost ecotourism revenue, there are a host of negative environmental consequences such as biodiversity loss, water and food shortages and the land being unable to mitigate the effects of climate change. These areas are not valued for their unique attributes or the valuable natural resources they provide, Green said, “so we lose them.” Tourists have historically been seen as having a negative impact on the environment. Critics complain that they violate fragile and threatened natural environments while contributing to greenhouse gases from the increased number of flights to these exotic and often remote locales. While these criticisms are justified, Boley and Green said responsible programs promote education of ecological conservation and environmental sustainability, fostering a greater understanding and appreciation of these exotic areas  
3. Which of the following statements is NOT TRUE about Tourism?

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I passed all my exams - I’m …………!

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New Zealand is one of the countries of ....................

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Some U.S. schools, however, have tried to limit or remove technology to improve learning. One of them is in Silicon Valley, the centre of the American tech industry. The Waldorf School of the Peninsula does not use any computers or (1) ____ technology in its education programs up to the seventh grade. The school’s website says while Waldorf teachers recognize the role technology can (2) ____ in the classroom, it must wait until the student reaches the right developmental age. “We observe that a child’s natural, instinctive, creative and curious way of (3) ____ to the world may be repressed when technology is introduced into learning environments at an early age,” the website says. When students reach high school, they are allowed to use computers and digital tools in the classroom. There are many independent Waldorf Schools throughout North America. The schools centre heavily on (4) ____ learning and aim to teach skills in “creativity and innovative thinking.” They also (5) ______ importance on students developing “social and emotional intelligence” as part of the educational experience

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Electronic devices are becoming increasingly common in educational environments. The term most commonly used for such devices is “educational technology”. This is not actually a new idea, as the rewritable wax tablets, often with lined surfaces to guide novice writers used in antiquity or the blackboard itself are both instances of technological innovations to support pedagogy. There are many different ways in which electronic devices are used in education. For example, students in STEM (science, technology, engineering medicine) fields have been making extensive use of sophisticated calculators for many years (the abacus and slide rule were non-electronic predecessors to calculators). In humanities as well as sciences, students use computers or equivalent devices to do research and write papers. In all fields, courses are now likely to have websites, and many instructors use course management software such as Blackboard, to post information for students, record grades, set up online discussions, and check for plagiarism. In lecture classes, many instructors project slides or notes on a screen and may even upload lecture notes so that students can review them. Some courses are hybrid, meaning that they have a strong online component, or offered entirely online. Many courses taught in conventional lecture halls are streamed online, and may use devices such as clickers to become more interactive. Any device (including tablets or cell phones) that instructors incorporate into a learning environment functions as educational technology.  
4. The word "they" in the passage refers to ____

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Vietnam’s football team received a “rock-star” welcome in Hanoi yesterday, (1)_______ losing to Uzbekistan in the 2018 U23 Asian Championship Final. Thousands of supporters flocked to the streets from Noi Bai Airport to Hanoi’s city center to greet the team bus, (2)________the Vietnamese PM’s reception for the team by five hours. A home-coming celebration was also held at My Dinh National Stadium, where all 40,000 seats were filled with thousands more waiting outside to see the players. Their (3)______ at the U23 Asian Cup made the players “overnight celebrities in the football-crazy nation”, AFP wrote. Various Korean outlets, including Korea Times, Sportal Korea and Hani, have also expressed amazement at the way football fans have celebrated their national team’s achievement, and at the same time, hailed the team’s performance at the tournament (4)_____ “heroic” and “like a fairy tale”. According to Sportal Korea, the team made an “impressive achievement” at the Asian tournament. “The red flags were being waved everywhere on the streets, and the cheering went on until late,” Hani wrote. The Korea Times also added that Vietnam’s success at the Asian Cup had brought Vietnamese football and Korean football “closer”. More importantly, it is the success (5)_____unites the country on so many levels

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Normally a student must attend a certain number of courses in order to graduate, and each course which he attends gives him a credit which he may count towards a degree. In many American universities the total work for a degree consists of thirty-six courses each lasting for one semester. A typical course consists of three classes per week for fifteen weeks; while attending a university a student will probably attend four or five courses during each semester. Normally a student would expect to take four years attending two semesters each year. It is possible to spread the period of work for the degree over a longer period. It is also possible for a student to move between one university and another during his degree course, though this is not in fact done as a regular practice. For every course that he follows a student is given a grade, which is recorded, and the record is available for the student to show to prospective employers. All this imposes a constant pressure and strain of work, but in spite of this some students still find time for great activity in student affairs. Elections to positions in student organizations arouse much enthusiasm. The effective work of maintaining discipline is usually performed by students who advise the academic authorities. Any student who is thought to have broken the rules, for example, by cheating has to appear before a student court. With the enormous numbers of students, the operation of the system does involve a certain amount of activity. A student who has held one of these positions of authority is much respected and it will be of benefit to him later in his career.
Normally a student would at least attend ____ classes each week.
2. According to the first paragraph an American student is allowed ____

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I said that I remembered _____with him in a handicraft village, but he said I was mistaken.

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Advances in technology have generated revolutionary applications that could change the face of education as we know it today. Online learning, also known as electronic learning, may (33)......the future of education thanks to recent developments in the Internet and multimedia technologies.It is anticipated that cyberspace institutions or online universities will replace traditional educational (34) .......Virtual classrooms will be multi-functional, acting simultaneously as learning platforms, forums and (35).......networks. They will be geared towards promoting the acquisition of knowledge as a life- long endeavour, (36)........occurs through global collaboration. Cyberspace institutions can go a long way towards achieving this as they are able to liberate us from the limitations of time and space. Flexibility of time and location makes e-learning a highly accessible, international resource. (37) .........., prospective students will, regardless of age, background or origin, have unlimited access to both formal and informal learning opportunities. The pursuit of knowledge will consequently become an end in itself and not a means to an end

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Isolated from the mainland, the Con Dao islands are one of Vietnam’s star (1) ______. Long preserve of political prisoners and undesirables, they now turn heads thanks to their striking natural beauty. Con Son, the (2) ______ of this chain of 15 islands and islets, is ringed with lovely beaches, coral reefs and scenic bays, and remains partially covered (3) ______ tropical forests. In addition to hiking, diving and exploring deserted coastal roads, there are excellent wildlife–watching opportunities, such as the black giant squirrel and endemic bow–fingered gecko. (4) ______ it seems an island paradise, Con Son was once hell on earth for the thousands of prisoners who languished in a dozen jails during French rule and the American– backed regime. Many Vietnamese visitors are former soldiers (5) ______ were imprisoned on the island. Until recently, few foreigners visited Con Dao, but with the commencement of low–cost boat connections this looks sure to change

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If you take the ice out of the fridge, it …………………

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:
Thanks to electricity, candles are no longer a necessity in our lives, but they are still a pleasure. The warm flame of candlelight can quickly alter the mood and atmosphere of a room, often creating a  peaceful scene that electric light just cannot match.
Candles are an important part of many cultural and religious festival and have been burnt in various forms for centuries. The ancient Romans and Egyptians made candles from a type of fiber coated with wax. However, up until the nineteenth century, most candles were made from a substance called tallow, obtained from beef fat. Tallow candles were very smoky and, understandably, had an unpleasant odor.
In the 19th century, candle makers learned to separate stearin, the solid form fat used as a type of glue, from tallow and used it to harden other fats. Candles that contained stearin would burn longer than previous ones and had a better smell. Stearin is still one of the main components of modern candle- making, and the techniques used to create candles today are much the same as they have been for many years. These days, the increase range of wax dyes, perfumes and other additives that are now available make candle making a very exciting and rewarding hobby.
Sales of candles have increased greatly over the last few years, showing that they have become part of our lives again, not through necessity, but because of the magical atmosphere they create. In our increasingly stressful lives, the calming quality of candlelight has a relaxing effect that many enjoy.
For those would like to learn to make candles, finding and buying candle-making kits is easy. Candle- making is definitely enhanced by the exciting possibilities of experimentation with various materials. Be brave and try out different effects – some of the most wonderful creations can happen by accident. With a bit of practice, you will be amazed at the very professional finish that can be achieved.
Despite their delicate beauty, candles can, of course, be highly dangerous. One should never leave lit candles unattended, even for a few moments. Always make sure candles are securely placed within candleholders.
Teach your children to respect a burning candle, and of course keep burning candles away from flammable materials. Keep your home safe by remembering that a candle is magical, but fire can be very destructive. Be careful, and enjoy the beauty of your candles!

Why was stearin used in candles?

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This kind of fruit helps to boost the immune system.