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:
Butterflies are among the most extensively studied insects - an estimated 90 percent of the world's species have scientific names. As a consequence, they are perhaps the best group of insects for examining patterns of terrestrial biotic diversity and distribution. Butterflies also have a favorable image with the general public. Hence, they are an excellent group for communicating information on science and conservation issues such as diversity.
Perhaps the aspect of butterfly diversity that has received the most attention over the past century is the striking difference in species richness between tropical and temperate regions.
For example, in 1875 one biologist pointed out the diversity of butterflies in the Amazon when he mentioned that about 700 species were found within an hour's walk, whereas the total number found on the British islands did not exceed 66, and the whole of Europe supported only 321. This early comparison of tropical and temperate butterfly richness has been well confirmed. A general theory of diversity would have to predict not only this difference between temperate and tropical zones, but also patterns within each region, and how these patterns vary among different animal and plant groups. However, for butterflies, variation of species richness within temperate or tropical regions, rather man between them, is poorly understood. Indeed, comparisons of numbers of species among the Amazon basin, tropical Asia, and Africa are still mostly "personal communication" citations, even for vertebrates, In other words, unlike comparison between temperate and tropical areas, these patterns are still in the documentation phase.
In documenting geographical variation in butterfly diversity, some arbitrary, practical decisions are made. Diversity, number of species, and species richness are used synonymously; little is known about the evenness of butterfly distribution. The New World butterflies make up the preponderance of examples because they are the most familiar species. It is hoped that by focusing on them, the errors generated by imperfect and incomplete taxonomy will be minimized.

Which of the following is NOT well understood by biologists?

Rewrite sentences without changing the meaning:
These students are made to study so much by their parents.

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He doesn’t know much about the subject, but he is ....................... .

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Were it not for the money, this job wouldn't be worth while.

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I haven't seen him since I left school. → I last

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Charlie said, "I don’t know what Fred is doing".

Read the following passage and choose the best answer (A, B, C, D):
Cholera, a highly infectious disease, has resulted in millions of deaths time after time over centuries. It is caused by the bacterium Vibrio cholera, first isolated by Robert Koch in 1883. The organism enters the body through the digestive tract when contaminated food or water is ingested.The bacteria multiply in the digestive tract and establish infection. As they die, they release a potent toxin that leads to severe diarrhea and vomiting. This results in extreme dehydration, muscle cramps, kidney failure, collapse, and sometimes death. If the disease is treated promptly, death is less likely. In many countries, a common source of the organism is raw or poorly cooked seafood taken from contaminated waters. The disease is especially prevalent after a natural disaster or other destruction that results in a lack of fresh water. Sewer systems fail, and waste travels into rivers or streams; piped water is not available so people must take their drinking and cooking water from rivers or streams. Because people frequently develop communities along waterways, the disease can be spread easily from one community to the next community downstream, resulting in serious epidemics
10. The word "epidemics" at the end of the passage is closest in meaning to" 

Choose the best answer:
Quoc Tu Giam/ established/ the/ grounds/ Van Mieu.

 Read the following passage and then choose the best answer.
This is a picture of Tom’s family. He is my pen pal. He lives in a lovely old town in England. There are six people in his family: his parents, his aunt, his uncle, his brother and Tom. They live happily together.
Tom’s family lives in a nice house in the town. His house is near a park and next to a bookstore. There are seven rooms, a garage and a beautiful garden in the house. The seven rooms include three bedrooms, two bathrooms, one living room, and a large kitchen. Tom and his brother share a bedroom and they don’t really like it. The house was built in 1999 but it is still new and fashionable. The garden is so beautiful with many kinds of flowers. Tom loves the garden so much.
People in Tom’s family have different jobs. His father is fifty and he is a teacher. He teaches in a secondary school in the town. His mother is forty-eight and she is a housewife. She takes care of all the people in the house. She grows vegetables in the garden and usually prepares wonderful meals. His brother, Peter is a pilot. He flies a plane in the sky. He is very handsome. His aunt is a nurse. She helps doctors take care of sick people in the hospital. His uncle is a journalist. He writes articles for a local newspaper. Tom is a student and he wants to be a doctor in the future. I will go to England to see him again next summer vacation.
 What is the most suitable title for this passage?

Read the following passage and mark the letter A, B, C, or D to indicate to each of the questions from 31 to 35
Social media marketing has increased due to the growing active user rates on social media sites. For example, Facebook currently has 2.2 billion users, Twitter has 330 million active users and Instagram has 800 million users. 
One of the main uses is to interact with audiences to create awareness of the brand or service, with the main idea of creating a two-way communication system where the audience and/or customers can interact back; providing feedback as just one example. Social media can be used to advertise; placing an advert on Facebook's Newsfeed, for example, can allow a vast number of people to see it or targeting specific audiences from their usage to encourage awareness of the product or brand. Users of social media are then able to like, share and comment on the advert, becoming message senders as they can keep passing the advert's message on to their friends and onwards. The use of new media put consumers on the position of spreading opinions, sharing experience, and has shift power from organization to consumers for it allows transparency and different opinions to be heard. 
Media marketing has to keep up with all the different platforms. They also have to keep up with the ongoing trends that are set by big influencers and draw many peoples attention. The type of audience a business is going for will determine the social media site they use. 

According to the third paragraph, what do media marketing have to keep up with? 

That small car, _____ , is advertised in many current magazines.

(346)______

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

According to the information in paragraph 3, long-distance travellers in the US can choose     mode(s) of transport.

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 fictitious androids written about in the mid-1900s are becoming a reality with advances in the field of robotics. Japan and Korea have been pioneers in this field. They regularly compete to be the first. The focus on most reseachers is in (1)............. life-like, attractive female androids. A Japanese research group led by Hiroshi Ishiguro created ther world’s first female android, which is called Actroid in 2003. The early model was limited so upgrades were made and the dramatic entertainment model was released in 2006. Actroids are covered with a silicone skin and have built-in sensors making them (2)................ of reacting  to  humans,  and  they  can  also  mimic  many  human behaviors. (3)................... , they can be programmed to speak in any language. The Korean android, EveR-2, released in 2006, was designed by a team from Kitech. They claim that she is more life-like than Actroids, and she can mimic emtions. She can also speak and move her lips to match  her (4)..................... . Future models are expected to have higher mobility and even be proficient in dancing. Research teams have also created male androids. One in particular is the Germinoid HI-I.
Regardless of the competition, it’s clear that this technology will one day present us (5)..................the dilemma of determining human from machine.

(3).......................................

Choose the best answer:
In Vietnam, children from 6 to 11 go to ___________ school.

Read the passage below carefully, and then choose the best answer:
Frozen Fitness
A man stands over a bathtub that is filled with ice. Although it is the middle of winter, he slowly slides into the tub and submerges his body underneath the water. Within seconds, he begins to shiver, but after a few minutes he is able to settle down. Despite the temperature, he will remain in the tub for the next 30 minutes. He is taking advantage of cold thermogenesis, a growing trend that could improve people’s health. Thermogenesis is an internal process that mammals undergo to generate heat when they are subjected to cold temperatures. In modern society, humans rarely requires this ability because we have heated homes and offices during the winter season. Recent studies, however, indicate that by doing so we could be missing out on some wonderful health benefits. Being subjected to cold temperatures regularly has been shown to boost men’s testosterone levels. It also boosts metabolism, which allows people to burn fat more efficiently. Some people have reported that cold thermogenesis also provides a mental lift once you have overcome the initial shock of the cold water. The positive effects of thermogenesis were known before, but it only started to become popular after the 2008 Olympics. One man who helped spark this craze was Ray Cronise, a NASA scientist and entrepreneur. He was reading an article that reported Michael Phelps ate 12,000 calories per day while training. The calories were so high that led him to believe that something else besides exercise was helping Phelps to stay thin and muscular: the icy water in the swimming pool. So he conducted his own experiment by drinking several glasses of ice water and exposing himself to cold water. After six weeks of this regiment, he had lost 30 pounds. There are several routines that a person can adopt if they are interested in starting their own thermogenesis routine. One method is ice baths. This method may be a bit too drastic for average people though. Instead, people may want to begin by dunking their face in cold water for a few seconds, and then gradually increase the time. Next, they can progress to cold showers and baths before moving on ice baths. An even more convenient way is to place an ice packet on the back of your neck for 15 to 20 minutes every evening. Although these methods may be extreme, many are willing to give them a go to improve their health
8. We should follow all of the following tips about thermogenesis EXCEPT that ___________

Choose the best answer:
He made me _____________they had left the district.

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:
Scientists have developed a new bionic computer chip that can be mated with human cells to combat disease. The tiny device, smaller and thinner than a strand of hair, combines a healthy human cell with an electronic circuitry chip. Doctors can control the activity of the cell by controlling the chip with a computer.
It has long been established that cell members become permeable when exposed to electrical impulses. Researchers have conducted genetic research for years with a trial-and-error process of bombarding cells with electricity in an attempt to introduce foreign substances such as new drug treatments or genetic material. They were unable to apply a particular level of voltage for a particular purpose. With the new invention, the computer sends electrical impulses to the chip, which triggers the physicians to open a cell‘s pores with control.
Researchers hope that eventually they will be able to develop more advanced chips whereby they can choose a particular voltage to activate particular tissues, whether they be muscle, bone, brain, or others. They believe that they will be able to implant multiple chips into a person to deal with one problem or more than one problem.

The word “strand" in the second sentence is closest in meaning to     .

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.
                      MODERN SCIENCE
It seems entirely natural to us that there are teams of scientists in universities and (1)............. institutions around the world, attempting to discover the way the world works. (2).............. , it hasn’t always been that way. Although the scientific method is now four or five hundred years old, the ancient Greeks, for example, believed that they could (3)............ the cause of natural events just by the power of thought. During the 17th century, more and more people began to realize that they could test their scientific ideas by designing a relevant experiment and seeing what happened. A lot of (4)......... was made in this way by individual scientists. These men and women often worked alone, carrying out research into many different areas of science, and they often received very little (5).............. for their hard work. At the start of the 20th century, though, it became clear that science was becoming more complicated and more expensive. The individual scientists disappeared, to be replaced by highly qualified teams of experts. Modern science was born.
(4)........................

Read the passage below carefully, and then choose the best answer:
What Do You Think?
We have all had bad experiences with restaurants, stores, or hotels. Maybe you have gone to a restaurant that served terrible food. Perhaps you have gone to a store that had high prices or bad service. Or maybe you have booked a hotel and found out later that the room was nothing like the advertisement. These days, we have a better chance of preventing these unpleasant surprises. We can do this by using apps. “App” is short for “application”. An app is a computer programme on a smartphone. You can use apps to do almost anything. Apps can help you play games, get directions, talk to friends, and so on. If you want to find information about a store or a hotel, you can use a review app. Review apps help us evaluate services and products before we hand over our money. The idea is very simple. After you go to a restaurant or stay in a hotel, you can post a review with one of your apps. You can say anything you want. If you like a hotel you stayed in, you can tell people that it was wonderful. If you think that the food in a certain restaurant was bad, then you tell people not to eat there. Other people can use their apps to read your reviews. Plenty of people prefer not to use these review apps. Many of these people prefer to go out and decide for themselves whether or not a service is good. However, review apps are getting more and more popular every day. Some apps are for specific services. For example, Tripadvisor focuses on travel, and Goodreads focuses on books. There are also other, larger apps that provide information for just about every service that you can think of
2. If you want to book a hotel, how can a review app help you?

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the best option for each of the following questions.
Banana fiber is used in the production of banana paper. Banana paper is used in two different senses: to (1)..................... to a paper made from the bark of the banana tree, mainly used for artistic purposes, or paper made from banana’s fiber, (2).............. from an industrialized process, from the stem and the non–usable fruits. The paper can be either hand–made or made by machine. The volume of raw (3)................... for making banana paper around the world on plantations is vast and largely unutilized. The market for banana paper is seen as a growth industry. (4).......... 1988, in Costa Rica, companies like EcoPaper.com   and   Costa   Rica   Natural   Paper   have   been   producing   100%   industrialized   fine environmental and ecological paper derived from natural banana fibers, for the writing and stationery market.
This industry (5).......... numerous waste products such as: the plastic that wraps the bananas, plastic cords to tie the wrapping, damaged bananas and the pinzote (stems). An alarming quantity of over of 92% of water, 3% of resins and 2% glucose; the rest is vegetal fiber. This particular composition  makes it decompose without the solid component being destroyed. This causes a severe impact on the surrounding ecosystems – much to the detriment of rivers and underground waters.

(4)......................

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