For questions 56 – 60, choose the answer (A, B, C, or D) which you think fits best according to the text.
Dr. Jonas Salk is credited with developing the first vaccine to fight against dreaded polio. Born in New York in 1914, Salk received his medical degree from New York University College of Medicine in 1939 and later attended the School of Public Health at the University of Michigan.

Salk was very interested in preventive medicine. He worked for the army on producing a vaccine against influenza for five years from 1942 to 1947. In 1949, a group at Harvard University led by John Enders developed a method to grow the poliovirus in quantity so that it could be studied further. This discovery was important as it allowed Salk and his fellow workers to study the disease in greater detail.

By 1952, Salk’s group had successfully tested a polio vaccine using an inactive poliovirus. In 1954, there were field tests done on a large scale. Initially, there were many different vaccines being used among the public, and there were some deaths associated with the vaccinations. However, Salk’s vaccine proved to be the best and was used without further problems. What was once a dreaded killer had been tamed by the work of Dr. Jonas Salk and co-workers.

From 1942 to 1947, Salk __________

Read the passage below and decide which options A, B, C, or D best fits each space from 19 to 23

The railway system in Viet Nam was first built in 1899 when Viet Nam was still a French colony. The total (19)_____ of the railroad is over 3,000 km, with the main route being the North-South (20)______, which is 1,726 km long. This track was considered the backbone of Indochina at the time. Now, the rail system covers 35 out of the 63 cities and provinces of Viet Nam.

However, the system was (21)______ damaged by bombings during the war. In 1975, after the reunification of the north and the south, the Vietnamese government decided to restore the system. In the space of a year, hundreds of bridges, tunnels, and stations were restored, along with 660 km of tracks. The new and improved system was (22)______ the Thong Nhat Express. Thanks to the rail system, traveling from north to south has become much more convenient for tens of thousands of people.

In the past, to be able to buy train tickets people had to wait in long lines. Now, (23)______ can buy tickets online, or at the central station, without having to wait that long.

20_____________

Complete the passage with the words provided:
All relationships go through difficult times. In the past, when married couples had problems they usually didn’t (1)_________They had to  either (2)_____with each other or continue to live together in an unhappy relationship. Getting divorced wasn’t an option for most people due to economic and social reasons. Some people believe that this wasn’t  such  a  bad  thing.  They  say  that  relationships  require  hard  work  and  (3)____“If a relationship is going to last a lifetime, you have to keep working at it,” says Doreen, who is celebrating her fiftieth wedding anniversary this year. “It isn’t all roses and romance. (4)______perfect all of  the  time. These days young people give up  when  there’s  the (5)____argument.” Experts agree that communication is key. The most important thing is to (6)____ talking. How many  times have you heard yourself say to (7)______, “If only you’d listen!” or “ I wish you (8)________do that!”The truth is, the (9)______couples talk, the better their relationship (10)______ be

Complete the passage with the words provided:
THE OPEN UNIVERSITY
The Open University was created in 1968 to give people who cannot afford (1) _______ attend regular courses of study, the opportunity of studying and (2)_______ a university diploma or degree. They study at home and their academic performance is assessed by (3) ______                 of written examinations or project work. Most Open University    students (4) ________  in study while also holding down a job or coping with a busy home life. They study in order to update their job skills  or  for personal (5) ______ .At the heart of  most courses is a (6)______ of specially written and  professionally printed textbooks and workbooks which students receive by post. On many of the courses, students are expected to watch television programmes on the BBC   network, (7)______-are usually broadcast in the (8) _____                   hours  of  the  morning. The (9) ______ of these programmes is to develop  and broaden the study experience, (10)______ students do not have to rely only on the printed material they are sent

Read the passage below and decide whether the statements are TRUE or FALSE?

"Nguyen Tri Hieu, 48, from HCM City has donated blood 71 times. However, he has set a goal of donating blood up to 100 times or until his health no longer allows him to.

“My mother died due to lack of blood for a transfusion when I was 20 years old. My family got together in an effort to donate blood to help her. We even bought blood from other donors, but it was not enough,” he recalled.

“I wasn't just my mother at that time, many patients were in desperate need of blood transfusions but the resources simply weren't there and they had to leave this world before their time.” said Hieu.

A few years after his mother passed away, Hieu decided to register to donate blood. Since the first time in 1997, Hieu has donated blood for 71 times, offering up the life-giving resource once every three months.

“There have been many times when I've donated blood to people in need of urgent transfusions. Once, when I was working, my friend at the blood bank called me to help a child at the Heart Institute. My boss immediately told me to go to the hospital.”

“I remembered all the times I've donated blood like that because if did not hurry, the patient’s life would be at risk," he said.

Hieu is also a registered organ donor. "I feel like I can give something, I don't need to keep it," he said. "I feel like I can give away anything, I should not keep it, how can I do it when someone might need it.”

Hieu was one of 100 donors who were honoured at a ceremony on Thursday for their contributions to the country’s voluntary blood donation movement in 2019."

4: He always tries to help patient with urgent need of transfusion.

Read the passage below and choose the correct word for each blank space.
HUE IMPERIAL CITY
The construction of the Imperial City started (31)______1805, under the reign of Emperor Gia Long, and (32)______completed in 1832, under the reign of Emperor Minh Mang. Built (33)______the northern bank of (34)______Perfume River, the Imperial City was influenced by the style of a French architect, Vauban. The city (35)______three sections: the Royal Citadel, the Imperial Enclosure, and the Forbidden Purple City.

34._________

Complete the passage with the words provided:
Here are tips that help succeed in your job interview
Always arrive early. If you do not know (1) ______ the organization is located, call for exact directions (2) ______ advance. Leave some extra time for any traffic, parking, or (3) ______ events. If you are running late, call right away and let someone know. The best time to arrive is approximately 5 - 10 minutes early. Give (4) ______ the time to read your resume one more time, to catch your breath, and to be ready for the interview. Once you are at the office, treat everyone you encounter with respect. Be (5) ______ to everyone as soon as you walk in the door. Wear a professional business suit. This point should be emphasized enough. First (6) ______ are extremely important in the interview process. Women should (7) ______ wearing too much jewelry or make up. Men should avoid flashy suits or wearing too much perfume. It is (8) ______ important that you feel comfortable. While a suit is the standard interview attire in a business environment, if you think it is (9) ______ informal environment, call before and ask. Regardless, you can never be overdressed (10) ______ you are wearing a tailored suit

Complete the passage with the words provided:
THE OPEN UNIVERSITY
The Open University was created in 1968 to give people who cannot afford (1) _______ attend regular courses of study, the opportunity of studying and (2)_______ a university diploma or degree. They study at home and their academic performance is assessed by (3) ______                 of written examinations or project work. Most Open University    students (4) ________  in study while also holding down a job or coping with a busy home life. They study in order to update their job skills  or  for personal (5) ______ .At the heart of  most courses is a (6)______ of specially written and  professionally printed textbooks and workbooks which students receive by post. On many of the courses, students are expected to watch television programmes on the BBC   network, (7)______-are usually broadcast in the (8) _____                   hours  of  the  morning. The (9) ______ of these programmes is to develop  and broaden the study experience, (10)______ students do not have to rely only on the printed material they are sent

Complete the passage with the words provided:
You will make the interview process easier for the employer if you prepare relevant information about yourself. Think about how you want to present your (1)________  , experiences, education, work style, skills, and goals. Be prepared to supplement all your answers with examples that support the statements you make. It is also a good idea to review your resume with a critical eye and (2)____             areas that an  employer might see as limitations or want further information. Think about how you can answer difficult' questions (3) ______and positively, while keeping each answer brief. An interview gives the employer a (4)_____ to get to know you. While you do want to market yourself to the employer, answer each question with an honest (5)_______. Never say anything negative about past experiences, employers, or courses and professors. Always think of something positive about an experience and talk about that. You should also be (6)_______ . If you  are  genuinely interested (7) ____ the job, let the interviewer know that. One of the best ways to show you are keen on a job is to demonstrate that you have researched the organization prior to the interview. You can also (8)_____interest by asking questions about the job, the organization, and its services and products. The best way to impress an employer is to ask questions that build upon your interview discussion. This shows you are interested and (9)______close attention to the interviewer. It is a good idea to prepare a few questions in advance, but an insightful comment based on your conversation can make an even stronger statement. At the (10) _____ of an  interview, it is appropriate for you to ask when you may expect to hear; from the employer

Read the following passage carefully, and then select the best option A, B, C or D to complete it:

"National Parks and Preserves, (1) _______ public lands or bodies of water within a country, set aside by the (2) _______ to protect ecosystems, plant and animal species, scenic landscapes, geologic formations, or historical or archaeological (3) _______. National parks are managed primarily for public recreation, (4) _______ exceptional locations where visitors can view wildlife and enjoy the (5) _______. Generally, these protected public lands are off-limits to hunting, livestock grazing, logging, mining, and other (6) _______ that exploit natural resources. Some parks commemorate significant historical events. (7) _______, Gettysburg National Military Park (1895) in Pennsylvania conserves the 13 sq km (5 sq mi) site of the pivotal battle in the (8) ______ Civil War (1861-1865). National preserves, sometimes (9) _______ nature or wildlife reserves, often are located within or near national (10) _______. These lands are managed by national governments primarily for wildlife protection or scientific research (11) _______ recreation, and provide ―living laboratories‖ in (12) _______ scientists observe plant and animal species in their natural habitat. (13) _______, fishing, and mining are permitted within many United States preserves (14) _______ the activities do not harm natural resources. Many other countries specifically ban such activities in their (15) _______."

6. Generally, these protected public lands are off-limits to hunting, livestock grazing, logging, mining, and other (6) _______ that exploit natural resources. 

Complete the passage with the words provided:
Getting friends and family to pose for photos is hard enough, but how would you cope with a rabbit, an owl or a butterfly that simply (1) _______to keep still? Simon King, wildlife film—maker and photographer, says you don't need any formal (2)_______  to get started. "The whole idea is that photographing wildlife should be fun". Simon offers the following (3)_______Specialize from the start. You're more likely to get good result sooner if you (4)_______  on the type of wildlife - insects for instance - (5)_______  than just going off to the woods or park with your camera and snapping whatever you see. Pick something that isn't hard to photograph. Choosing an animal that's hard to (6)_______ or will run away if it sees you (7) _______ unnecessary problems. How about flowers or a group of birds? Search second-hand camera shops and local papers for quality (8) _______. You don't need to (9) _______ a fortune. Simon started with just a second-hand camera that cost around $30. But you will need a single lens reflex camera. Remember it's the whole photograph that counts, nor just the subject. (10) _______ you're composing a picture and try to be as artistic as possible.

MANY KINDS OF MICROBES

There are thousands of different kinds of microbes. Microbes called (1) _______ are the smallest living things. Bacteria live almost everywhere: on land, in water, and even (2) _______ you.

Some microscopic life forms are like plants. Tiny diatoms are microbes that live in lakes and the ocean. Diatoms soak up (3) _______ and use its energy to make food, just like plants.

Some microscopic life forms are more (4) _______ animals. Protozoa such as the amoeba and paramecium are animal-like microorganisms. An amoeba can move (5) _______ changing the shape of its body. It sticks out a pseudo pod, or false foot. A paramecium is (6) _______ with tiny hairs. It waves its hairs rapidly to swim.

Viruses are (7) _______ kind of microbe. Viruses sometimes act like living things and other times act like nonliving things. Viruses sometimes live in the cells of plants and animals. (8) _______ a cell, a virus reproduces like a living thing. The virus uses the cell to make many copies of itself. Viruses are (9) _______ small to see with an ordinary microscope. You need a powerful electron microscope to see a virus. Outside of a plant or animal cell, a (10) _______ is like a nonliving thing.

Choose the letter A, B, C or D to complete the passage below

Water pollution happens __________ (6) toxic substances enter water bodies such as lakes, rivers, oceans and so on, getting dissolved in them, lying suspended in the water or depositing on the bed. This degrades the quality of water. Not __________ (7) does this spell disaster for aquatic ecosystems, the pollutants also seep through and reach the groundwater, which might end up in our households as contaminated water we use in our daily activities, including drinking.

Water pollution can be __________ (8) in a number of ways, one of the most polluting being city sewage and industrial waste discharge. Indirect sources __________ (9) water pollution include contaminants that enter the water supply from soils or groundwater systems and from the atmosphere via rain. Soils and groundwater contain __________ (10) residue of human agricultural practices and also improperly disposed of industrial wastes.

Pollutants can be of varying kinds: organic, inorganic, radioactive and so on. In fact, the list of possible water contaminants is just too vast to be listed here.

Water pollution happens __________ (6) toxic substances enter water bodies such as lakes, rivers, oceans and so on, getting dissolved in them, lying suspended in the water or depositing on the bed.

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: 

Earth, our beautiful home planet, is the only astronomical object to accommodate life as we know it. Scientists believe Earth was formed approximately 4.5 billion years ago. It is the fifth-largest planet in our solar system. Its equatorial diameter is about 12,074 kilometers. Earth is the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kilometers. It takes 365.3 days for Earth to orbit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 58°C. Nearly 70 percent of Earth’s surface is covered by ocean, which has an average depth of about 4 kilometers. In 2015 it was estimated that 7.3 billion humans are living on Earth.

In our solar system, ………….. planets are larger than Earth.

Complete the passage with the words provided:
The most dominant and reliable features of facial expressions provide a constant channel of communication. They can be shifty and evasive; convey hate, fear, and guilt; or (1) _____ confidence, love, and support. Referred to as "mirrors of the soul" our eyes serve as the major decisive factor in (2) _____ the spoken words. The eyes of the man converse as (3) _____ as their tongues, with the advantage that the ocular dialect needs (4) _____ dictionary, but it is understood all over the world. When the eyes say one thing, and the tongue another, a practiced man relies on eyes. Except (5) _____ extremely shy individuals, most people look for social acceptance by studying the eyes of others. Eyes also can (6) _____ indicate a positive or a negative relationship. People tend to look longer and more often at the people whom they trust, respect and care about than at those whom they doubt or (7) _____. Normal eye dilation is not under control of the individual. Personally characteristics such as introversion and extroversion also influence eye behavior. Eye behavior seems (8) ____ particular importance and is generally used to indicate whether one is open to communication. This can be observed when a teacher asks the class a question: students who think they know the answer will generally (9) ____ at the teacher, (10) ____ students who do not know the answer will usually try to avoid eye contact

Complete the passage with the words provided:
Criticism
 It can (1) _________along time to become successful in your chosen field, however talented you are. One thing you have to be (2) _________ of is that you will face criticism along the way. The world is full of people who would rather say something negative than positive. If you’ve made up your (3) _________ to achieve a certain goal, such as writing a novel, don’t let the negative criticism of others prevent you from reaching your (4)_________ and let constructive criticism have a positive (5) _________ on your work. If someone says you’re totally (6) _________ in talent, ignore them. That’s negative criticism. If, however, someone advises you to revise your work and gives you good reasons for doing so, you should (7) _________ their suggestions carefully. There are many film stars who were once out of (8) _________. There are many famous novelists who made a complete (9) _________ of their first novel - or who didn’t, but had to keep on approaching hundreds of publishers before they could get it published. Being successful does depend on luck, to a certain extent. But things are more likely to (10) _________ well if you persevere and stay positive.

Find mistakes among A B CD and correct

There are many ways to preserve fruit, for example freezing, canning and to dry 

COLORS AND EMOTIONS
Colors are one of the most exciting experiences in life. I love them, and they are just as important to me as emotions are. Have you ever wondered how the two are so intimately related?
Color directly affects your emotions. Color both reflects the current state of your emotions, and is something that you can use to improve or change your emotions. The color that you choose to wear either reflects your current state of being, or reflects the color or emotion that you need.
The colors that you wear affect you much more than they affect the people around you. Of course they also affect anyone who comes in contact with you, but you are the one saturated with the color all day! I even choose items around me based on their color. In the morning, I choose my clothes based on the color or emotion that I need for the day. So you can consciously use color to control the emotions that you are exposed to, which can help you to feel better.
Color, sound, and emotions are all vibrations. Emotions are literally energy in motion; they are meant to move and flow. This is the reason that real feelings are the fastest way to get your energy in motion. Also, flowing energy is exactly what creates healthy cells in your body. So, the fastest way to be healthy is to be open to your real feelings. Alternately, the fastest way to create disease is to inhibit your emotions.

What is the main idea of the passage?

Read the text and decide which answer best fits each space. Circle A, B, C, or D. 
There can be no doubt at all that the Internet has made a huge difference in our lives. Parents are worried that children spend too much time playing on the Internet, hardly ever doing …..(36)…… else in their spare time. Naturally, parents are…. (37)….. to find out ….(38)…. the Internet is so attractive, and they want to know if it can be …..(39)…. for their children. Should parents worry if their children are spending that much time staring at their computers? Obviously, if children are bent over their computers for hours, …..(40)….. in some game, ….(41)….. of doing their homework, then something is wrong. Parents and children could decide how much use the children should …..(42)…… of the Internet, and the child should give his or her word that it won’t interfere with their homework …..(43)….. the child is not holding to this arrangement, the parent can take more drastic steps. Dealing with a child’s use of the Internet is not much different …..(44)….. negotiating any other sort of bargain about behavior. Any
parent ….(45)…. is seriously alarmed about a child’s behavior should make an. appointment to …..(46)….. the matter with a teacher. Spending time in front of the screen does not necessarily affect a child’s performance at school. Even if a child is absolutely crazy ….(47)…. using the Internet, he ….(48)…. she is probably just ….(49)…. through a phase, and in a ….(50)….. months there will be something else to worry about!

38____________

Complete the passage with the words provided:
Royal Residences
Buckingham Palace, Windsor Castle and the Palace of Holyroodhouse are the official (1)_______ of the Sovereign and, as such, serve as both home and office for The Queen, whose personal standard flies (2)_______ Her Majesty is in residence. These buildings are used extensively for State ceremonies and Official entertaining and are opened to the (3)_______ as much as these commitments allow. They are furnished with fine pictures and (4) _______ of art from the Royal Collection, which has been assembled over four centuries by successive sovereigns. Many of the State Apartments and rooms at the official residences have been in continuous use since their conception and many of the works of art are (5)_______ in the rooms for which they were originally (6)_____. The official residences are in (7)_______use and the style and manner in which they are (8) _______to visitors reflects their working status. Rooms are kept as close to their normal (9) _______as possible. Inevitably, opening times are subject to change at short notice depending on circumstances. The Royal Collection, which is owned by The Queen as Sovereign in trust for her successors and the Nation, is administered by the Royal Collection Trust to which a proportion of admission and other income from visitors is directed.The remainder of this income funds the majority of the cost of restoring Windsor Castle which was badly (10)_______by fire in November 1992

Find mistakes among A B C D and correct

The world oceans have risen on average of 6 inches over the past 100 years, which has been considered as an evidence that global warming has an effect.