Read the passage below carefully, and then choose the best answer:
Incredible Shrinking Microchips
There is a popular old saying that “bigger is better”. Although this may be true in some regards, the exact opposite often applies in technology. As electronic components get smaller, it allows companies to manufacture tinier devices with more features. Thus began the never-ending quest to create the smallest microchips on the planet. Yet as these vital electronic components get smaller, they are also getting stronger and clever inventors are finding new ways in which to use them to do incredible things. Currently, the biggest limitation microchip producers face when trying to reduce chips’ size is the copper wires that provide electrical current throughout the chip. Although they can be made smaller, this can cause a whole host of problems such as melting and overheating. Thanks to the work of a few scientists from the UK though, this problem may soon be a thing of the past. Their solution is getting rid of the copper wiring altogether and using carbon nanotubes instead. Not only would this allow for smaller sizes but it would also increase the power that microchips can generate. In the end, this would translate into smaller and more powerful devices much to the delight of consumers all over the world. Corporate powerhouse Intel® has announced plans to create a line of tiny, low power chips that can be used in bracelets, smart watches, and other tiny devices. The chips will be called Intel® Quark, and they are being designed primarily to fit in biomedical devices. A key selling point to biomedical technology is that the devices have to be nonintrusive because people don’t want to carry around heavy equipment to monitor their health. If they can do this, Intel® will likely find several tablet and smartphone manufacturers who are willing to corporate Quark microchips into their devices. In a somewhat unusual project, researchers are working on a special microchip that will serve as miniature human organs in experiments. These “organ” chips could be used to test different medicines and study diseases. If realized, the technology could put an end to the use of lab mice and other animals for testing. Everyone from the largest pharmaceutical companies to the US military has shown interest in the project. Currently, the research team in charge of the project believes that within five years the organ chips will be used in practical research. It goes to show that thinking small often produces the biggest results.
3. What might nanotubes do?

 Since 1984 the sport has included in the Olympic Games as part of the yachting events. 
(tìm lỗi sai)

(429)______

_____ if a war happened?

(251)________

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The food is ……………

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I will take a first-aid _________ to learn how to help people in case of emergency.

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:
In ancient times, some of the first celebrities were Roman gladiators. Rather like today’s TV talent-show contestants, these men fought each other for the audience’s entertainment. Fast forward to the 18th century, it was politicians and preachers who were able to become celebrities through public (1)__________. George Whitefield, for example, a preacher from England, (2)___________ a crowd of 30,000 when he visited the US city of Boston. It’s no wonder he was called ‘Anglo-America’s first modern celebrity’. In the 19th century, the arrival of cheap newspapers created a sudden (3)___________ for exciting stories. All kinds of people began to get their 15 minutes of fame, including the legendary American outlaw and bank robber, Jesse James, and one of the world’s first media celebrities, Sam Patch. Patch became famous for jumping into rivers from high places, and he became a (4)___________ name by leaping into Niagara Falls. He survived every jump, except the last one into the Genesee River in New York. In the same way that the media is held (5)___________ for celebrity problems today, people blamed the pressure of the media for Patch’s sudden end

Choose the best answer:
The number of injuries from automobile accidents ………. every year.

Food critics from two ---131--- newspapers, the Toronto Day and Toronto Rising are expected to dine here this week. Let's make a special effort to do our work flawlessly. Photographs of the critics will be placed at our welcome station. Using these ---132---, hosts will be responsible for identifying the critics and telling the wait staff, who should alert the kitchen. Servers must strive to be prompt. They should also recommend our daily specials. ---133---. I am confident that everyone ---134--- these critics with our great food and service.

131...............

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
Many parents believe that they should begin to teach their children to read when they are (1)________ more than toddlers. This is fine if the child shows a real interest but forcing a child could be counter-productive if she isn't ready. Wise parents will have a (2) ________attitude and take the lead from their child. What they should provide is a selection of stimulating toys, books and other activities. Nowadays there is plenty of good (3) ________available for young children, and of course, seeing plenty of books in use about the house will also (4) ________them to read. Of course, books are no longer the only source of stories and information. There is also a huge range (5)_______ videos, which can reinforce and extend the pleasure a child finds in a book and are equally valuable in helping to increase vocabulary and concentration. Television gets a bad review as far as children are concerned, mainly because too many spend too much time watching programmes not intended for their age group

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 following questions from 35 to 42. 
What is commonly called pepper in reality comes from two very different families of plants. Black and white pepper both come from the fruit of the Piper nigrum, a vine with fruits called peppercorns. The peppercorns turn from green to red as they ripen and finally blacken as they dry out. The dried-out peppercorns are ground to obtain black pepper. White pepper, which has a more subtle flavour than black pepper, comes from the same peppercorns as black pepper. To obtain white pepper, the outer hull of the peppercorn, the pericarp, is removed before the peppercorn is ground. Red and green pepper, on the other hand, come from a completely different family from black and white pepper. Red and green peppers are from the genus Capsicum. Plants of this type generally have tiny white flowers and fruit which can be any of a number of colours, shapes and sizes. These peppers range in flavour from very mild and sweet to the most incredibly burning taste imaginable. Bell peppers are the most mild, while habanros are the most burning. 
Christopher Columbus is responsible for the present-day confusion over what pepper is. The Piper nigrum variety of pepper was highly valued for centuries, and high demand for pepper by Europeans was a major cause of the fifteen-century push to locate ocean routes to the spice-growing regions of Asia. When Columbus arrived in the New World in 1492, he was particularly interested in finding black pepper because of the high price it would command in Europe. Columbus came across plants from the Capsicum family in use among people of the New World, and he incorrectly identified them as relatives of black pepper. Columbus introduced the spicy Capsicum chili peppers to Europeans on his return from the 1492 voyage, and traders later spread them to Asia and Africa. These Capsicum peppers have continued to be called peppers in spite of the fact that they are not related to the black and white pepper of the Piper nigrum family. 

The word push could best be replaced by ______. 

The lights _____ out  because we _____ the electricity bill.

(178)______

Read the following passage and choose the best answer (A, B, C, D):
Some technological developments are the results of years of diligent work. Others are stumbled upon by accident. The discovery of X-rays is in the second category. In 1895, X-ray radiation was accidentally discovered by a physicist named Wilhelm Rontgen, while he was working in his lab. Rontgen discovery greatly advanced medical science. One night in 1895, Wilhelm Rontgen was working with an electric device called a Crookes tube. A Crookes tube is a glass tube with metal components inside it. When turned on, the tube produces a stream of electrons. Rontgen and other scientists observed a new form of energy escaping from the front end of the Crookes tube. Rontgen wanted to be the first to discover this new mysterious energy. To do this, he needed to make sure the tube was covered with black cardboard. This would make the room completely dark and allow him to better see this new form of energy. Rontgen was hoping to observe this new energy on a special screen that would be placed right in front of the Crookes tube. Amazingly, before the screen was placed near the Crookes tube, Rontgen already noticed the screen was glowing. He bought the screen closer, and the glow became brighter. (1) He then placed a book between the end of the tube and the screen-the glow was still there. (2) Rontgen realized that a new and different form of radiation must be causing the screen to glow. (3) As he didn't know what kind of radiation it was, he named it "X". (4) Rontgen soon started studying the new type of radiation. He designed experiments which allowed him to test how far X- rays could penetrate. He also had the bright idea of trying to take photographs with X-rays. One day, he tested his theories by asking his wife to put her hand between a photographic plate and a Crookes Tube. Sure enough, the resulting image of the bones in his wife's hand was the first ever X-ray photograph of the human body. After taking that first photograph, Rontgen understood how X-rays could benefit doctors and patients. He shared his discovery, and soon X-ray machines were appearing in hospitals. X-rays were very useful for medicine because they let doctors see a patient's bones. If a patient had a broken bone, it was made visible by the X-ray image. This let doctors know the right way to repair the fracture. Wilhelm Rontgen's accidental discovery has now been helping people for over one hundred years. Thanks to X-rays, broken bones can be repaired reliably and effectively. We should be grateful to Wilhelm Rontgen for making his discovery freely available and greatly advancing medical science. Because of this, we humans are able to live longer, healthier lives.
5. Which sentence about X-rays is NOT true?

______the book again and again, I finally understood what the author meant.

(147)_______

Choose the best answer:
Sam is ....... responsible than Tom.

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:
Telecommunicating is a form of computer communication between employees’ homes and offices. For employees whose jobs involve sitting at a terminal or word processor entering data or typing reports, the location of the computer is of no consequence. If the machine can communicate over

telephone lines, when the work is completed, employees can dial the office computer from a distant site and transmit the material to their employers. A recent survey in USA Today estimates that there are approximately 8.7 million telecommuters. But although the numbers are rising annually, the trend does not appear to be as significant as predicted when Business Week published "The Portable Executive" as its cover story a few years ago. Why hasn't telecommuting become more popular?
Clearly, change simply takes time. But in addition, there has been active resistance on the part of many managers. These executives claim that supervising the telecommuters in a large work force scattered across the country would be too difficult, or, at least, systems for managing them are not yet developed, thereby complicating the manager's responsibilities.
It is also true that employees who are given the option of telecommuting are often reluctant to accept the opportunity. Most people feel that they need regular interaction with a group, and many are concerned that they will not have the same consideration for advancement if they are not more visible in the office setting. Some people feel that even when a space in their homes is set aside as a work area, they never really get away from the office.

The reason why telecommuting has not become popular is that the employees

 I … a meeting on Zoom for 1 hour.

(112)_______

Throughout the world there are different ways for people to greet each other. In much of the world, a handshake is the (1) __________ form of welcoming and greeting someone. In many countries around the Mediterranean Sea a (2) ___________ kiss on the cheek is the appropriate way to welcome friends and family. It can be a very (3) __________ surprise if you expect to shake hands and get a kiss or a hug instead. At times, it is difficult to tell what sort of greeting (4) ___________ is followed. People may bow, grab another‟s arm or even slap the other person on the back. In some places people just smile, look at the other‟s face and say nothing. Most people in the world are tolerant of visitors and don‟t mind what travellers do that seems wrong as long as the visitors are (5)__________. A big part of the delightfulness of world travel is experiencing different customs.

(41)_______

Choose the best answer:
He _________ that media company for five years.

Choose the best answer:
People in Tokyo are very polite ……….. friendly.

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
MEMORANDUM
TO : Accounting Staff
FROM : Ananda Jeyraj, Comptroller
RE : Revised deadline for departmental audits
DATE : April 3
Since we are short of two staff members who went on a business trip, I have decided to (1)------- the April 12 deadline for the quarterly audits of all department budgets. Your reports on the financial status of each section of the corporation will be due on  April 28. I cannot prolong the due date any later than this, though. I appreciate (2)------- hard work and will keep it in mind when performance-based salary increases are (3)------- at the end of the year

We are pleased to announce that the installation of the new manufacturing equipment in our main plant has been completed. The new machines---131--- workflow by allowing for flexibility in production. With six mixing tanks of ---132--- sizes, we expect to be able to fill a wider range of orders, from small to very large. This ---133--- is an important way to ensure that Balm Manufacturing continues to be a leader in the fragrance industry.---134---. Jim Martel, who is organizing this effort, will contact each of you soon with details.

133...................