Rewrite sentences without changing the meaning
The world has seven continents.

 

Mary: “Would you mind if I use your computer for an hour?” Tony:"_____”

(101)______

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Non-smokers usually live …………. than smokers.

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mountain/ amazed/ Are/ seeing/ at/ the/ you?

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The Invention of the Periodic Table
If you are looking to gain a better understanding of the world around you, chemistry is the perfect subject to study. It is an examination of matter, its properties, and its interactions with everything around it. Where physics often deals with concepts and theories that are difficult to test and observe, chemistry principles can easily be applied to medicine, cooking, and several other areas. At the heart of all these discoveries is one vital chart that organizes elements based on their atomic number and chemical properties: the periodic table. Although the first periodic table was published in 1869, it was a work in progress for hundreds, if not thousands of years. Since ancient times, people have been fascinated with elements such as gold, tin, and copper in their natural forms. They were mined and used to make jewellery, weapons, coins, and many other things. Over time, people became more curious about these metals and how they were composed. In ancient Greece, Aristotle and other philosophers claimed things were made from the elements of earth, water, fire, and air. For years, this theory was accepted. Then people began to reevaluate this concept during the Age of Enlightenment. In 1661, Irish scientist Robert Boyle defined an element as something that “cannot be broken down into a simpler substance by a chemical reaction”. Over a century later, French chemist Antoine-Laurent Lavoisier would publish the first modern textbook on chemistry. In it, he listed several substances which he believed should be classified as elements into two categories: metals, and non-metals. Although his work wasn’t completely accurate, it represented a major step forward at the time. Over the next century, scientists started to classify the elements into different groups depending on their properties and atomic weights. However, it is Russian chemist Dmitri Mendeleev who is usually credited as the first person to make a periodic table. Although other scientists had submitted tables, they were eventually rejected by the scientific community for a lack of detail. Mendeleev arranged all of the elements according to their atomic mass. He was even smart enough to leave empty spaces for elements which hadn’t been discovered at the time. Although Mendeleev’s periodic table wasn’t perfect, it set the format which is similar to the one used today.
7 Which of the following is NOT true according to the passage?

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Nam plays sports very often, so he looks very______ .

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facilities/ easily/ Medical/ accessible/ are/ more.

The ability to conduct electricity is one of the key properties of a metal. Other solid material such as silicon can conduct electricity but only effectively at certain temperatures. Also, some substances such as salt (sodium chloride) can conduct when molten or when dissolved in water. The ability of metals to conduct electricity is due to how their atoms bond together. In order to bond together the metal atoms lose at least one of their outermost electrons. This leaves the metal atoms with a positive charge and they are now strictly ions. The lost electrons are free to move in what are known as a sea of electrons. Since the electrons are negatively charged they attract the ions and this is what keeps the structure together.

An electric current is a flow of charge and since the electrons in the sea of electrons are free to move they can be made to flow in one direction when a source of electrical energy such as a battery is connected to the metal. Hence we have an electric current flowing through the wire, and this is what makes metals such good conductors of electricity. The only other common solid conducting material that pencil users are likely to encounter is graphite (what the 'lead' of a pencil is made from). Graphite is a form of carbon and again the carbon atoms bond in such a way that there is a sea of electrons that can be made to flow as an electric current. Likewise, if we have an ionic substance like salt we can make the electrically charged ions flow to create a current but only when those ions are free to move, either when the substance is a liquid or dissolved in water. In its solid state an ionic substance like salt cannot conduct electricity as its charged ions cannot flow.

Electrical insulators are substances that cannot conduct electricity well either, because they contain no charged particles or any charged particles they might contain do not flow easily. Water itself is a poor conductor or electricity as it does not contain a significant amount of fully charged particles (the ends of a water molecule are partly charged but overall the molecule is neutral). However, most water we encounter does contain dissolved charged particles, so it will be more conductive than pure water. Many of the problems that occur when touching electrical devices with wet hands result from the ever-present salt that is left on our skin through perspiration and it dissolves in the water to make it more conductive.

The word "they” in paragraph 3 refers to.

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The children like to put ___________ nice clothes when they go out.

Theresa walked past me without saying a word. She ______ me.

(398)________

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My family and I often spend time ____________ television in the evening.

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Shy people often find it difficult to ........................ group discussions.

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:
All men should study, we have to study to (1)_____ our knowledge and develop our intelligence.An educated man can only utilize his bodily strength to work and live. An educated man, (2)_____this strength, still has the faculty of his intelligent brain and good reflection. This intelligence and thought (3)_____ him to help his physical strength to act more quickly and cleverly.In a same profession or work, the educated man differs (4)______ the uneducated considerably. Therefore, intellectual workers have to study, this is a matter of course but manual workers must also again an education. In civilized countries compulsory education has been applied. Everyone must spend seven or eight years to study. From ploughmen to laborers in these (5)_____, no one is unable to read a book or a paper fluently.

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The Magical Mind of Leonardo Da Vinci
When someone shows great skills in a certain field, we call them a genius. In particular, the term is most associated with two people. One is the famed scientist Albert Einstein, and the other is Leonardo Da Vinci. However, unlike Einstein, whose achievements were essentially all related to science, Leonardo Da Vinci was a master at art, architecture, invention, and several other areas. Da Vinci was bom in Italy in 1452. He took to art at an early age and at age 14, he went to study as an apprentice in Florence under the artist Verrocchio. For the next six years. Da Vinci picked up drawing, carpentry, sculpting, and many other techniques from his master and his talent was evident. In fact, Da Vinci was such a good painter that his talent frustrated his master. Eventually, Verrocchio was so frustrated by his student’s genius that he stopped painting altogether. By the age of 20, Da Vinci was considered a master artist and set up his own workshop. It was there that Da Vinci was approached to create a painting for the Duke of Milan. The Duke was so impressed by his work that he would bring him under his service. In addition to creating paintings and sculptures, the Duke also had him design innovative buildings, machines, and weapons. Da Vinci would draw up plans for several futuristic inventions including tanks, submarines, and flying machines. He also mastered the art of drawing every muscle and detail of the human body. The only criticism one could make of Da Vinci is that his brilliant mind jumped so quickly from subject to subject that he rarely completed the works he started. The ones he did finish were often spectacular masterpieces, such as his paintings The Last Supper and the timeless Mona Lisa. The latter, which is on display at the Louvre in Paris, is arguably the most famous painting of all times because of its incredible detail and realism. Although Da Vinci died in 1519, his effect on the art world has never waned. He helped coin the term “Renaissance man” which refers to someone who excels in many different areas. Perhaps the greatest present Da Vinci left behind was his journals. Admirers and students of his work can examine 13,000 pages of his notes, drawings, and ideas to better understand what made this genius tick.
7. What does the passage say about Da Vinci’s journals in paragraph 3?

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We are not surprised that the people in the village are hospitable _______ friendly.

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

Read the following passage and choose the best answer (A, B, C, D):
Aspirin's origins go back at least as early as 1758. In that year, Englishman Edward Stone noticed a distinctive bitter flvor in the bark of the willow tree. To Stone, this particular bark seem to have much in common with "Peruvian Bark", which had been used medicinally since the 1640s to bring down fevers and to treat malaria, stone decided to test the effectiveness of the willow bark. He obtained some, pulverized it into tiny pieces, and conducted experiments on its properties. His tests demonstrated that this pulverized willow bark was effective both in reducing high temperatures and in relieving aches and pains. In 1763, stone presented his tiding to the British Royal Society. Several decades later, further studies on the medicinal value of the willow bark were being conducted by two Italian scientists. These chemists, Brugnatelli and Fontana, determined that the active chemical that was responsible for the medicinal characteristics in the willow bark was the chemical salicin, which is the active ingredient of today's aspirin. The name "aspirin" is the trade name of the drug based on the chemical salicin, properly known as acetylsalicylic acid.The trade name "aspirin" was invented for the drug in the 1890s by the Bayer Drug Company in Germany. The fist bottles of aspirin actually went on sale to the publicjust prior to the turn of the century, in 1899.
1. According to the passage, aspirin originated: 

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
                                                HOME LIFE
"Parents  today  want  their  kids  spending  time  on  things  that  can  bring  them  success,  but (1)......... , we've stopped doing one thing that's actually been a proven predictor of success-and that's household chores," says Richard Rende, a (2)........ psychologist in Paradise Valley, Ariz, and co- author of forthcoming book “Raising Can-Do Kids." Decades of studies show the benefits of chores- academically, emotionally and even professionally. Giving children household chores at an early age (3).................. to build a lasting sense of mastery, responsibility and self-reliance, according to research by Marty Rossmann, professor emeritus at the University of Minnesota. In 2002, Dr. Rossmann analyzed data  from  a  longitudinal study (4)............. followed 84 children across four periods in their lives-in preschool, around ages 10 and 15, and in their mid-20s. She found that young adults who began chores at ages 3 and 4 were more likely to have good relationships with family and friends, to achieve academic and early career success and to be self-sufficient, as (5)........ with those who didn't have chores or who started them as teens. Chores also teach children how to be empathetic and responsive to others' needs, notes psychologist Richard Weissbourd of the Harvard Graduate School of Education.

(5)...................

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The Greatest Light Show on the Earth
If you are a fan of amazing visual displays, planetariums around the world offer some entertaining laser-light shows that are often accompanied by popular music. Yet if you want to see the world’s greatest light show, you won’t be able to catch it indoors. Instead, you will have to head to one of the Poles. In certain spots, you will be treated to colourful streaks of light dancing across the sky. This incredible display is the aurora borealis, and every year people from all corners of the globe flock to witness its wonders firsthand. The Aurora Borealis, or Northern Lights, got its official name in 1621. The name combines the name of the Roman goddess of the dawn, Aurora, and the Roman god of the north wind, Boreas. In ancient times, the aurora completely baffled people’s minds, as science was far more primitive than it is today. Nevertheless, they created many myths to explain them. The Vikings believed the lights were the reflection of dead maidens. The Scots thought they were supernatural beings battling in heaven. Meanwhile, Eskimos thought that the lights were dead souls, and when the colours changed, it was their attempt to contact living friends and relatives. It was not until 2008 that a team of scientists from ULCA finally concluded with certainty what the true cause of these dancing light is. The process begins when solar winds carry charged particles from the Sun through space and into the Earth’s atmosphere. When these charged particles enter the Earth’s atmosphere, they are magnetically attracted to the Earth’s poles. During their journey to these points, they come in contact with nitrogen and oxygen atoms in the sky. These collisions are what cause the aurora. The heights at which the collisions occur determine the colours of the individual lights. For example, when the solar winds collide with nitrogen at least than 96 kilometres above the Earth’s surface, the lights will be blue. If the same collision occurs above 96 kilometres, however, the light will be purple. Or, if the solar wind particles collide with oxygen, the colours produced will be either red or green. However, merely understanding how the aurora works does not do this phenomena justice. To truly appreciate the full splendor of the aurora, you will have to see this Natural Wonder of the World in person.
7. What can identify the colour of the aurora?

Neil Armstrong (1) _______ into his microphone. And in less than two seconds the message that will live in the annals of exploration flew with the (2) _______ of radio to the huge telescope dish at Honeysuckle Creek, near Canberra, Australia, thence to the Comsat (3) _______ over the Pacific, then to the switching center at the Goddard Space Flight Center outside WashinGiải thíchon, D.C., and finally to Houston and the (4) _______ of the world: “That's one small step for a man, one giant leap for mankind.”

(21)___________

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A rat is a small animal. ………… lives in a hole.