Choose the best answer:
Harry and Kate are talking in Harry’s office. Kate: “May I open the window?” Harry: “ _______________”.

 

Read the following passage and choose the best answer (A, B, C, D):
Although only a small percentage of the electromagnetic radiation that is emitted by the Sun is ultraviolet (UV) radiation, the amount that is emitted would be enough to cause severe damage to most forms of life on Earth were it all to reach the surface of the Earth. Fortunately, all of the Sun’s ultraviolet radiation does not reach the Earth because of a layer of oxygen, called the ozone layer encircling the Earth in the stratosphere at an altitude of about 15 miles above the Earth. The ozone layer absorbs much of the Sun’s ultraviolet radiation and prevents it from reaching the Earth. Ozone is a form of oxygen in which each molecule consists of three atoms (O3) instead of the two atoms (O2) usually found in an oxygen molecule. Ozone forms in the stratosphere in a process that is initiated by ultraviolet radiation from the Sun. UV radiation from the Sun splits oxygen molecules with two atoms into free oxygen atoms, and each of these unattached oxygen atoms then joins up with an oxygen molecule to form ozone. UV radiation is also capable of splitting up ozone molecules; thus, ozone is constantly forming, splitting, and reforming in the stratosphere. When UV radiation is absorbed during the process of ozone formation and reformation, it is unable to reach Earth and cause damage there. Recently, however, the ozone layer over parts of the Earth has been diminishing. Chief among the culprits in the case of the disappearing ozone, those that are really responsible, are the chlorofluorocarbons (CFCs). CFCs meander up from Earth into the stratosphere, where they break down and release chlorine. The released chlorine reacts with ozone in the stratosphere to form chlorine monoxide (ClO) and oxygen (O2). The chlorine then becomes free to go through the cycle over and over again. One chlorine atom can, in fact, destroy hundreds of thousands of ozone molecules in this repetitious cycle, and the effects of this destructive process are now becoming evident.
3. It is stated in the passage that the ozone layer: 

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:
Early peoples had no need of engineering works to supply their water. Hunters and nomads camped near natural sources of fresh water, and populations were so sparse that pollution of the water supply was not a serious problem. After community life developed and agricultural villages became urban centres, the problem of supplying water became important for inhabitants of a city, as well as for irrigation of the farms surrounding the city. Irrigation works were known in prehistoric times, and before 2000 BC the rulers of Babylonia and Egypt constructed systems of dams and canals to impound the flood waters of the Euphrates and Nile rivers, controlling floods and providing irrigation water throughout the dry season. Such irrigation canals also supplied water for domestic purposes. The first people to consider the sanitation of their water supply were the ancient Romans, who constructed a vast system of aqueducts to bring the clean waters of the Apennine Mountains into the city and built basins and filters along these mains to ensure the
clarity of the water. The construction of such extensive water-supply systems declined when the Roman Empire disintegrated, and for several centuries local springs and wells formed the main source of domestic and industrial water. The invention of the force pump in England in the middle of the 16th century greatly extended the possibilities of development of water-supply systems. In London, the first pumping waterworks was completed in 1562; it pumped river water to a reservoir about 37 m above the level of the River Thames and from the reservoir the water was distributed by gravity, through lead pipes, to buildings in the vicinity. Increased per-capita demand has coincided with water shortages in many countries. Southeast England, for example, receives only 14 per cent of Britain's rainfall, has 30 per cent of its population, and has experienced declining winter rainfall since the 1980s.
In recent years a great deal of interest has been shown in the conversion of seawater to fresh water to provide drinking water for very dry areas, such as the Middle East. Several different processes, including distillation, electrodialysis, reverse osmosis, and direct-freeze evaporation, have been developed for this purpose. Some of these processes have been used in large facilities in the United States. Although these processes are successful, the cost of treating seawater is much higher than that for treating fresh water.

Clean water supply was first taken into consideration by     .

Choose the best answer:
Ha Long Bay is one of the Seven ____________ of the world.

Choose the best answer:
I/ have never/ be/ more beautiful/ a waterfall/ before.

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.
5. The phrase “_warm-up time_” in paragraph 3 is closest in meaning to _______

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
The Prime Minister's comments yesterday on education spending miss the point, as the secondary education system also needs a major overhaul. Firstly, the system only views the weakest learners as having special (1)...... .The brightest and most (2)....... students are not encouraged to develop to their full potential. Secondly, there's too much testing and not enough learning. My fifteen-year-old daughter, for example, has just spent the last month or so (3)_____ for exams. These aren't even real, important exams, as her GCSEs will be next year. They're just (4)....  exams. Is the work she's been doing really going to make her more (5)..... about her subjects, or will she forget it all tomorrow? I suspect the latter. Thirdly, the standard (6)_____ doesn't give students any (7)....... in developing practical work-related, living and social skills, or in skills necessary for higher education. How many students entering university have the first idea what the difference is between (8)....... someone else's work and making good use of someone else's ideas? Shouldn't they have been taught this at school? How many of them are really able to go about (9).......a  skill that's essential at university because there are no teachers to tell you what to do - in an efficient way? Indeed, hoe many students (10)....... from university totally unable to spell even simple English words correctly? The system is letting our children down

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
The latest addiction to trap thousands of people is Internet, which has been (1) ______ for broken relationships, job losses, financial ruin and even one suicide. Psychologists now recognize Internet Addiction Syndrome (IAS) as a new illness that could cause serious problems and ruin many lives. Special help groups have been set up to of sufferers help and support. IAS is similar to (2) ______ problems like gambling, smoking and drinking : addicts have dreams about Internet; they need to use it first thing in the morning; they lie to their partners about how much time they spend online; they wish they could cut down, but are unable to do so . A recent study found that many users spend up to 40 hours a week on the Internet; (3) ______ they felt guilty, they became depressed if they were (4) ______ to stop using it. Almost anyone can be at risk. Some of the addicts are teenagers who are already hooked on computer games and who find it very difficult to resist the games on the Internet. Surprisingly, however, psychologists (5) ______ that most victims are middle-aged housewives who have never used a computer before.

Choose the best answer:
My tutor couldn’t arrive on time because she had a ________ tire.

Chọn câu đồng nghĩa:
The patient recovered more rapidly than expected.

The young are _____ more concerned with physical attractiveness than elderly people.
(174)___

Read the passage below carefully, and then choose the best answer:
Saving the Rainforests
One of the hottest topics related to the environment is rainforests. Despite always being mentioned in the news, many people don’t know very much about these areas or understand why they are so important. The name “rainforest” actually does a pretty good job of describing what they are – tall forests that receive high amounts of precipitation. In a year, rainforests get between 250 to 450 centimetres of precipitation. There are two types of rainforests: tropical rainforests and temperate rainforests. Tropical rainforests are more plentiful and are located in warmer climates, while temperate rainforests are found in places where the weather is a bit milder. In terms of location, rainforests can be found on every continent with the exception of Antarctica. Although they only cover 6 percent of the Earth, over 50 percent of the Earth’s animal and plant species can be found there. Many biologists estimate that there are possibly millions of additional species present there that have yet to be discovered and classified. Over the years, rainforests have gained the nickname “the world’s pharmacy” because more than 25 percent of natural medicines were found there. Many herbs that are used to make medicines can only be found in rainforests. Rainforests are also home to several tribes that have lived off the land for thousands of years. During this time, they have survived by hunting animals and gathering fruits and vegetables. They also possess tremendous knowledge when it comes to crafting and applying medicines made from herbs and plants. Over time, their unique way of life has declined as they have come in contact with modern civilization. Despite their numerous benefits, rainforests have been disappearing at a rapid speed. As the Earth’s population continues to expand, developers have been cutting down their trees to create new lands for farming or urban projects. This could have unfortunate long-term effects on our planet. If deforestation continues at this rate, it is possible that a quarter of all species on the Earth may become extinct in the next 50 years. As it stands, plenty of damage has already occurred. West Africa has had 90 percent of its rainforests destroyed, while the island nation of Madagascar has eliminated 66 percent of its original rainforests as well. As a result, many charities have sprung up with the goal of purchasing and protecting the remaining rainforests. With their help, hopefully we can stop the destruction of one of the planet’s most vital assets.
2.  According to the passage, what did biologists conclude about rainforests?

We are working, that means that we are contributing goods and services to our society.

(tìm lỗi sai )
(285)_______

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
The  United  Nations  Children’s  Fund  (UNICEF),  originally  known  (1)........... the United Nations International Children’s Emergency Fund, was created by the United Nations General Assembly on December 11th , 1946 to provide emergency food and healthcare to children and mothers in countries that had been devastated by World War II. The Polish physician Ludwik Rajchman is widely regarded as the (2).............. of UNICEF and served as its first chairman from 1946 to 1950, when he had to flee the United States in the wake of McCarthyism. Rajchman is to this day the only person that served as UNICEF’s Chairman for longer than 2 years. On Rajchman’s suggestion, the American Maurice Pate was appointed its first executive director, serving from 1947 until his death in 1965. In 1950, UNICEF’s mandate was extended to address the long-term needs of children and women in developing countries everywhere. In 1953, it (3).......... a permanent part of the United Nations System, and the words "international" and "emergency" were dropped from the organization's name, though it retained the original acronym, "UNICEF".
UNICEF (4).................. on contributions from governments and private donors. UNICEF’s total income for 2015 was more than five billion dollars. Governments contribute two-thirds of the organization’s resources. Private groups and individuals contribute the rest through national committees. It is estimated that 92 per cent of UNICEF revenue is distributed to program services. UNICEF’s programs emphasize developing community-level services  to (5)................. the health and well-being of children. UNICEF was awarded the Nobel Peace Prize in 1965 and the Prince of Asturias Award of Concord in 2006.

(1).........................

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:
It is a characteristic of human nature that people like to get together and have fun, and people live during America's frontier days were no exception. However, because life was hard and the necessities of day-to-day living took up their time, it was common for recreation to be combined with activities necessary for survival. One example of such a form of recreation was logrolling. Many frontier areas were heavily wooded, and in order to settle an area it was necessary to move the trees. A settler could cut down the trees alone, but help was needed to move the cut trees. After a settler had cut a bunch of trees, he would then invite is neighbours over for a logrolling. A
logrolling is a community event where families got together for a combination of work and fun. The women would bring food and have a much needed and infrequent opportunity to relax and chat with friends, the children would play together exuberantly, and the men would hold lively competitions that involved rolling logs from place to place as quickly as possible. This was a day of fun for everyone involved, but as its foundation was the need to clear the land.

According to the passage, which of the following is NOT true about a logrolling?

Read the passage below carefully, and then choose the best answer:
Drawing a Line in the Sand
Artists are known to be a picky bunch. Over years of practice, they often develop a preference for certain materials. For instance, some sculptors will only work with marble, whereas some painters may insist on only using watercolour paints. Yet, only a select few have become masters working with a common material that you can find on any beach: sand. As children, we all made sand castles, but some skilled artists have taken this activity to the next level. They have created impressive, massive sand constructions in the shape of dragons, castles, and everything else you can imagine. A major benefit for many artists who build with sand is its simplicity. To get started, all you need is sand and water. However, mastering this medium takes years of practice and great attention to detail. For example, different tasks require different ratio of water to sand to get the job done. Deciding on the proper tools can also be complicated. Some artists prefer using buckets and shovels, while others are purists who refuse to use anything but their hands. Sand painting is another form of sand art. The practice dates back dozens of thousands of years and has been used by several different cultures. It involves spreading different coloured particles, which often come from crystals and rocks, onto a surface and then arranging them to make a picture. Interestingly enough, many sand paintings are designed to be temporary. Tibetan monks will spend days creating beautiful sand paintings which are blown away by winds shortly after they are finished. They view the natural destruction of their work as a symbol of impermanence in life. Meanwhile, Native Americans consider their temporary sand paintings as living creatures and they treat them with great respect while they exist. Recently, filmmakers have also discovered a way to work with sand by creating sand animation. Like other forms of animation, an artist will create one image and then capture it on camera. Then, they will make some subtle changes and then move on to the next frame and so on. After they have created and captured hundreds of images, the frames will be strung together. In the final product, it will appear as if the sand images are moving or changing shape. The next time you are at the beach, let your mind run free as you look at the shore. Who knows, you might get the urge to create some remarkable sand art of your own.
6. According to the passage, most sand paintings ___________.

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
The World Health Organization (WHO) is a (1) ____________ agency of the United Nations that is concerned with international public health. It was established on 7 April 1948, and is headquartered in Geneva, Switzerland. The WHO is a member of the United Nations Development Group. Its predecessor, the Health Organization, was an agency of the League of Nations. The WHO constitution was signed (2) ____________ 61 countries (all 51 member countries and 10 others) on 22 July 1946, with the first meeting of the World Health Assembly (3) _____________ on 24 July 1948. It incorporated L'Office International d'Hygiène Publique and the League of Nations Health Organization. Since its establishment, it has played a leading role in the (4) ______________ of smallpox. Its current priorities include communicable diseases, in particular HIV/AIDS, Ebola, malaria and tuberculosis; the mitigation of the effects of non-communicable diseases such as sexual and reproductive health, development, and aging; nutrition, food security and healthy eating; occupational health; substance abuse; and driving the development of reporting, publications, and networking. The WHO is responsible for the World Health Report, the worldwide World Health Survey, and World Health Day. The current Director-General of the WHO, Tedros Adhanom, also served as Ethiopian Health Minister from 2005 to 2012 and as Ethiopian Foreign Minister from 2012 to 2016. Adhanom started his five-year (5) ___________ on 1 July 2017

Choose the underlined words or phrases that are not correct in standard written English.
Mary is used to do her homework by herself .

Choose the best answer:
If we became rich, we would travel ______ the world.

Choose the best answer:
Can you tell me the process ___________ making reinforced concrete?

Read the following passage and choose the best answer (A, B, C, D):
As teenagers approach university level, a decision has to be made on what course to pursue. In this world of diversity, (1) ______ such a choice is not easy for both children and parents. In the old days, it was not much a problem to do the task because there were not so many diverse learning areas to choose from. Besides, there were only a few distinctive professional careers like doctor, engineer, accountant, nurse, teacher,etc.  to think about. Most higher learning usually led to a financially successful life. (2) ______, the cost of education was not so high. Today’s world is entirely different from the things (3) ______ have just been described.  The job market is constantly changing due to innovative technology and new (4) ______. Meanwhile, most teenagers have difficulty in identifying their own interests. There are a variety of well- organized career talks and student counseling workshop to guide and help teenagers (5) ______ what course to take. Furthermore, psychological tests are also used.  Certain instruments such as surveys, interviews and computer software can help to find out preferences, interests, or learning styles of the students.