Choose the best answer:
Everything is ___________ in space.

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Because the low latitudes of the Earth, the areas near the equator, receive more heat than the latitudes near the poles, and because the nature of heat is to expand and move, heat is transported from the tropics to the middle and high latitudes. Some of this heat is moved by winds and some by ocean currents, and some gets stored in the atmosphere in the form of latent heat. The term “latent heat” refers to the energy that has to be used to convert liquid water to water vapor. We know that if we warm a pan of water on a stove, it will evaporate, or turn into vapor, faster than if it is allowed to sit at room temperature. We also know that if we hang wet clothes outside in the summertime, they will dry faster than in winter, when the temperature is lower. The energy used in both cases to change liquid water to water vapor is supplied by heat - supplied by the stove in the first case and by the Sun in the latter case. This energy is not lost. It is stored as vapor in the atmosphere as latent heat. Eventually, the water stored as vapor in the atmosphere will condense to liquid again, and the energy will be released to the atmosphere.
In the atmosphere, a large portion of the Sun’s incoming energy is used to evaporate water, primarily in the tropical oceans. Scientists have tried to quantify this proportion of the Sun’s energy. By analyzing temperature, water vapor, and wind data around the globe, they have estimated the quantity to be about 90 watts per square meter, or nearly 30 percent of the Sun’s energy. Once this latent heat is stored within the atmosphere, it can be transported, primarily to higher latitudes, by prevailing, large - scale winds. Or it can be transported vertically to higher levels in the atmosphere, where it forms clouds and subsequent storms, which then release the energy back to the atmosphere.

According to the passage, all of the following are true of ancient Greek potters and vase

painters EXCEPT    .

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The development of genetically modified (GM) plants and animals had led to a huge global controversy. Opponents say that GM “Franken foods” are a threat to our well-being, and proponents say that the risks are minimal. There is one aspect of the war over GM that is often overlooked. Anyone who wears a cotton shirt these days is using a GM crop. Cotton is the only major non-food GM crop at present, but others are coming.
GM cotton plants that is not food has not stopped the most passionate GM opponents from objecting. If GM cotton is grown in a field next to fields of non-GM cotton, they argue, then how to keep genes from being transferred from field to field. This danger, however, is not as compelling to the public as possible health hazards in food, so there is no great fury over GM cotton.
GM cotton seeds produce higher yields, and they do without the need for pesticides. Planting of  GM cotton has increased five fold since 1997; three-quarter of cotton in America, and over half in China, is now GM. Farmers like it because it increases their profits.
Other options for non-food GM include new variety of flowers with different colors or scents, tougher grasses for lawns, and plants designed to soak up pollutants from the soil. The paper industry provides another example of potential for GM to help produce better and cheaper products. Paper is made from pulp, and pulp is generally made from trees. Researchers in New Zealand and Chile have been working on insect-resistant pines, and a Japanese firm has combined carrot genes with tree genes to make them grow better in poor soil.
Another interesting case is that of tobacco. It is not food crop, but it is consumed, and GM tobacco plants with both more and less nicotine have been created. The tobacco plant, however, is an ideal target for GM, since its genetics are very well understood and it produces a lot of leaves. The value of the drugs that could be produced by GM tobacco is so high, many farmers could switch from growing tobacco for cigarettes to growing it for medicine. Since medical cost is rising, consumers would also be happy to use drugs produced in bulk by GM tobacco.

Which options for non-food GM is NOT mentioned in the passage?

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Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1)
Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2)
Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3)
The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4)
Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) 
It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force.

Which does the author mean by saying "Most people seem to take diversity for granted"?

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Instagram was founded by Kevin Systrom and Mike Krieger in October 2010. Systrom and Krieger initially wanted to create an application for mobile photography called Burbn, but upon developing their idea further, they found that it was too similar to the existing search-result app called Foursquare. They tweaked their original idea until they came up with a photo-sharing app. The name “Instagram” is a combination of “instant camera” and “telegram.”

From the outset, Instagram proved extremely popular. Only two months after its launch, it achieved a million users and reached ten million users in its first year. The simple idea of sharing photos in a social media setting appealed to a wide variety of phone users. As time went on, Systrom and Krieger began making a series of technology-related improvements to the app —making it compatible with Android and Windows phones, for example - as well as improving the user experience. In January 2011, it added hashtags, offering users the ability to find posts and people related to common interests. As Instagram grew into one of the most popular apps in the world, tech titans took notice. In 2012, Facebook purchased Instagram for one billion dollars.

In November 2012, Instagram launched web versions of user profiles, giving desktop users the ability to access Instagram profiles. However, the website profile launch retained limited functionality and lacked a search bar; the feature was redesigned in 2015. Instagram also began allowing the upload of non-square photos to the app in August 2015, a notable shift from the look and feel of the app since its inception. Rather than cropping down larger photos to a neat square, users could upload any photo of any dimension to share with friends and followers.

In March 2016, Instagram changed the nature of its news feed, the place where users scroll through newly-posted photos from those they follow, from chronological to algorithmic. “Algorithmic” means that Instagram uses computer algorithms and artificial intelligence to make “decisions” on what its data predicts you’ll like best. While this decision was met with backlash at first, it was made in order to prevent users from missing important posts from friends and family that might have gone unnoticed with a standard chronological timeline approach. Later in 2016, the app underwent major aesthetic changes; the app itself revamped to a black-and-white theme, while the app icon changed to a whimsical rainbow-colored design.

Today, Instagram boasts 800 million users. Every day, 55 million photos are uploaded and 1.2 billion likes are recorded.

In the last paragraph, why is “decisions” in quotation marks?

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If you ask any Vietnamese girl right now who she has a crush on, chances are you will encounter the name of the 20-year-old goalkeeper who plays for Vietnam national team. Bui Tien Dung made a name for himself in the AFC U23 Championship where he accurately blocked opponents' shots time after time and saved Vietnam’s chance at the championship in the process. Bui Tien Dung was born on February 28th, 1997 in a poor farming family in Thanh Hoa Province. Dung has loved soccer since he was a kid, but his family was so poor that they could not even
afford a plastic soccer ball for him and his brother. The Bui brothers had to resort to playing with balls made from scrap papers and old grapefruits.
Dung's parents recognized the brothers' passion for football and used the little money they had to support their sons' early training. When a big football club in the city announced a recruitment event, Dung convinced his younger brother to go to the tryout. He passed on the opportunity knowing that his parents could not afford to have both their sons gone to city.
While his younger brother training in the city, Dung's local training center went bankrupted and abruptly ended Dung's football career. For a year, instead of kicking balls, the young man worked as a construction worker to support his parents. He seemingly gave up on football.
Fate finally smiled on Dung when a football coach rediscovered him and sent him to train with a local football team. Reentering the football field, Dung wanted to play in a defense position but he was pushed to goalkeeping because of his height. At first, Dung was unhappy about his new position, but his parents advised him to follow and make the best out of it. And Dung did.
The young goalkeeper trained hard for his new position and patiently climbed up the ranks the following years. Through hard work, he was named the best goalkeeper of Vietnam's U19 division. Those who have worked with Dung described him as a likable young man. He is very respectful to others and speaks very little. However, when the gloves are on, the nice young man transforms into a fierce competitor and an unyielding goalkeeper.
At AFC U23 Championship, Dung finally reunited with his brother on the field. They fought battle after battle together with other amazing players on the team and helped Vietnam made history for Southeast Asian football.
Even though Vietnam came short of winning the championship, Dung and his teammates are already heroes and legends in the heart of Vietnamese people. They played fairly and lost with glory and grace.

Which can be used as a synonym of the word "recruitment” ?

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The diary and the letter were the most extensively practiced forms of life writings in eighteenth- century America. From the numerous examples of these two types of writing from the period, a portrait of daily life of the period can be gleaned.
Many of the diaries that were kept during this period were life diaries by authors interested in maintaining day-to-day records of reflective self-examination, but some of the most compelling were situational diaries; those prompted by and limited to lengthy descriptions of personal reflections about a particular event. Three of the many situational journals of this period are those written by Sarah Kemble Knight, William Burd II, and Dr. Alexander Hamilton. Sarah Kemble Knight's diary of her five-month trip at the end of 1704 and the beginning of 1705 from Boston to New Haven to New York and back again to Boston was published more than a century later as The Journal of Madam Knight. Though this diary does include an account of the hardship that she encountered along the way, it is principally composed of humorous descriptions of and commentary on the hospitality that she was offered and the manners of those that she encountered. William Burd II kept two diaries to describe his experiences on a 1729 surveying expedition to settle a border dispute between Virginia and North Carolina. One of the diaries, History of the Dividing Line between Virginia and North Carolina, was published in 1842, while its companion, Secret Diary, was published in 1929. In these diaries, Burd used a humorous and satirical approach to describe not just the day-to-day events of the trip but also the characteristics which set his beloved Virginia culture apart from the (in his opinion) decidedly less praiseworthy culture of those non- Virginians that he encountered in his trip. Dr. Alexander Hamilton's Itinerarium (1744) describes a four- month voyage of discovery undertaken by Hamilton through the mid-Atlantic and New England colonies; in the diary that he kept of this trip. Hamilton provides considerable commentary on the social customs of various areas, comparing the customs and culture of the better homes of the American colonies with those of the great salons of Europe.
Letter-writing also held a place of importance in eighteenth-century America (indeed, the ability to produce cultured letters was considered a form of art), and many letters extant from that period provide insights into the culture, mores, and styles of written communication of that era. Many of the letter writers employed devices in common usage in European models of the time, demonstrating that letter writers felt a sense of cohesiveness with the cultured classes of Europe: John and Abigail Adams signed the names Lysander and Constantia to their early letters, while Thomas Jefferson created an elaborate dialogue between his head and his heart to discuss the nature of friendship in  a 1786 letter to Maria Cosway. The variety of purposes that these letters served provides additional insight into the priorities of the society of the time. The letters were used to cement love matches and friendships, as the previously mentioned letters did; they were the primary method for relaying news among family and friends who were scattered across various geographic locations; they were often used as a means of carrying out business in this era before more rapid long-distance communication; they were often used used as a way of sharing professional, social, or political ideas among leaders in various fields who perhaps had no other way to get together and exchange ideas.

What is stated in the passage about the works by Knight, Burd, and Hamilton?

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When living and working in another country, there are numerous things to consider apart from the more obvious ones of climate, language, religion, currency, etc. Some important considerations are less obvious. For example, do you have a pet or do you enjoy a hobby such as horse riding? Your animal or hobby may be perceived in a completely different light in another culture so it’s important to consider the significance given to specific animals in different parts of the world and general perceptions towards them.
One example which is often mentioned in popular press is the case of dogs. In some cultures, like the US or UK, dogs are loved and considered a great pet to have at home and with the family. In other cultures, such as those where Islam is the majority religion, dogs may be perceived as dirty or dangerous. Muslims treatment of dogs is still a matter of debate amongst Islamic scholars. While these animals are widely considered by many Western cultures to be „man’s best friend’, the Koran describes them as “unhygienic”. Muslims will therefore avoid touching a dog unless he can wash his hands immediately afterwards, and they will almost never keep a dog in their home.
In Iran, for instance, a cleric once denounced „the moral depravity’ of dog owners and even demanded their arrest. If you are an international assignee living and working in Saudi Arabia or another Arabic country, you should remember this when inviting Arab counterparts to your house in case you have a dog as a pet. This is just one example of how Islam and other cultural beliefs can impact on  aspects of everyday life that someone else may not even question. A Middle Eastern man might be very surprised when going to Japan, for instance, and seeing dogs being dressed and pampered like humans and carried around in baby prams!
Dogs are not the only animals which are perceived quite differently from one culture to another. In India, for example, cows are sacred and are treated with the utmost respect. Conversely in Argentina, beef is a symbol of national pride because of its tradition and the high quality of its cuts. An Indian working in Argentina who has not done his research or participated in a cross cultural training programme such as Doing Business in Argentina may be surprised at his first welcome dinner with his Argentinean counterparts where a main dish of beef would be served.
It is therefore crucial to be aware of the specific values assigned to objects or animals in different cultures to avoid faux–pas or cultural misunderstandings, particularly when living and working in another culture. Learning how people value animals and other symbols around the world is one of the numerous cultural examples discussed in Communicaid’s intercultural training courses. Understanding how your international colleagues may perceive certain animals can help you ensure you aren’t insensitive and it may even provide you with a good topic for conversation.

The author mentioned cows in paragraph 4 as an example of     .

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Newspapers can be traced back to 16th century Venice. In 1566, handwritten news sheets - called 'avis' or ‘gazette' – filled with information on wars and politics in Europe were distributed weekly in Venice. Similar news sheets soon started to appear in other European countries. By 1615, Germany and Austria were publishing weeklies. And in 1621, the first news sheets appeared in England.
At first, these news sheets only printed news which came from outside the country in which they were printed. Discussion of local or national issues was avoided. Europe’s governments did not tolerate anything negative being said about them as it could lead to national unrest.
Such censorship slowed the development of newspapers. Nevertheless, a belief in the importance of a 'free press’ slowly began to take hold in Europe. England was among the first countries to escape government control of the press. This occurred during the reign of King Charles I in the 17th century, when, during a period of breakdown in the king's authority, people began to publish what they wanted.
Eventually, free press had the right to criticize government and voice other ideas freely. In the middle of the 18th century, Sweden became the first country to make press freedom a part of its law.
In the 19th century, the newspaper industry was transformed by the invention of the telegraph. The telegraph was a communication system that allowed messages to be sent over long distances in a matter of minutes. It wasn’t long before newspapers became society's primary means of spreading and receiving information. In 1880, the first photographs appeared in newspapers and, by the end of the century, all the basic technical tools for the modern newspaper were in place.
The story of newspapers in the 20th century was one of adaptation to changing consumer and media markets. The invention of radio, TV, and later the Internet, repeatedly drove newspapers to re-invent themselves. Also, during the 20th century, mass-market advertising increased profitability for newspapers. This attracted large, publicly-owned corporations who began buying newspapers from the descendants of company founders.
Over the years, people have periodically predicted the extinction of newspapers. In fact, every time a new media has come into being, dire predictions have been made for existing forms (e.g. television was supposed to have replaced radio, radio was supposed to have replaced newspapers). Yet history has repeatedly shown that new media do not replace existing media. Instead, what happens is that media consumption grows, which creates the necessary space for the new media to become a part of the media landscape.
According to the World Association of Newspapers (WAN), each day more than 1.5 billion people around the world read a newspaper. The WAN has also estimated the total annual worth of the global newspaper industry and put it at just under 180 billion USD. Such statistics suggest the newspaper industry is healthier than at any other time in its history. Indeed, if the industry proves itself as capable of adapting to change as it has done in the past, it is unlikely that newspapers will be disappearing from newsstands anytime soon.

In the 20th century, newspapers     .

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Translators and interpreters for tech jobs of the future are expected to be one of the fastest growing occupations in the nation, according to a just released survey by Vietnamworks. Almost all positions for programmers, application developers, database and network administrators, engineers, designers, architects, scientists, technicians, and tech support will require bilingual or multilingual fluency. In just the last two years the demand for tech professionals with foreign language skills has increased more than two and one-half fold, said the survey, and the uptick shows no signs of abating anytime soon. Roughly 400,000 jobs are expected to open for interpreters (who focus on spoken language) and translators (who focus on written language) in the tech segment, between 2017 and 2020, says Tran Anh Tuan. Tuan, who works for the Centre for Forecasting Manpower Needs and Labour Market Information in Ho Chi Minh City doesn't include other industries in his prediction,
which are also recruiting ferociously for more people with these same language skills.
While that claim might seem a bit overblown (and amounts to little more than a guess by Tuan), it is clear that innovative technologies like robotics, 3D printing, drones, artificial intelligence   and virtual reality will create major upheavals in all sorts of labor markets, not just technology over     the next few years. In the last month alone, most every job posted on employment websites throughout Vietnam included the word bilingual. Far higher salaries go to people who work in high    tech positions and can speak a foreign language such as English in addition to Vietnamese, says Tran Quang Anh from the Posts and Telecommunications Institute of Technology.
Unfortunately, the surveys show that most graduating Vietnamese students are unable to do more than understand a few basic phrases of foreign languages, and practically none of them  can speak any foreign language coherently, The good paying jobs with high salaries and benefits are only available to translators and interpreters who specialize in high tech jobs, says Anh. But it's    not just English— graduates are needed with fluency in middle eastern languages like  Arabic, Farsi and Pashto (Afghani) as well as German, Japanese and Korean to name just a few. Spanish is  also in high demand in Vietnam, primarily because it is the second most common language in the US after English.
A recent tech expo in Hanoi sponsored by Vietnamworks and the Navigos Group attracted nearly 4,000 young tech graduates and recruiters from 14 leading companies looking to fill job  vacancies with skilled bilingual workers. The job applicants were young and industrious, said the recruiters. However, missing were candidates with the requisite language skills and most lacked  basic 'soft skills' such as written and verbal communication abilities to effectively communicate  even in their native Vietnamese language.
Notably, the recruiters said they considered language abilities and soft skills just as, if not more important, than academic ability. Yet virtually all the prospective academically qualified employees lacked even the most basic of interpersonal communication abilities.

The word "requisite" in paragraph 5 could best be replaced by    _.

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U.N. diplomats abandoned efforts to draft a treaty that would outlaw human cloning. They will likely settle for a weaker statement, and won’t seek a widespread ban, officials said. The debate began when Italy introduced a document into the UN. to stop any attempt at cloning human life. The Belgians objected to the use of the term “human life” in the document, because they feared it would put a stop to all forms of human cloning.
[1] There is near universal support among the United Nations’ 191 members for a ban on reproductive cloning-creating cloned babies. [2] Many countries have wrestled over whether to allow cloning for stem cell and other types of research. [3] Indeed, many researchers believe that stem cells could be used to repair nerve tissue or cure diseases, including Alzheimer’s. [4] Stem cells are taken from embryos and cloned, but extracting these cells kills the embryo. Opponents say that this is equal to murder.

Which of the following can be inferred from his passage?

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According to sociologists, there are several different ways in which a person may become recognized as the leader of a social group in the United States. In the tamily, traditional cultural patterns confer leadership on one or both of the parents. In other cases, such as friendship groups, one or more persons may gradually emerge as leaders, although there is no formal process of selection. In larger groups, leaders are usually chosen formally through election or recruitment.
Although leaders are often thought to be people with unusual personal ubility, decades ot research have failed to produce consistent evidence that there is any category ot “natural leaders”. It seems that there is no set of personal qualities that all leaders have in common; rather, virtually any person may be recognized as a leader if the person has qualities that meet the needs ot that particular group.
Furthermore, although it is commonly supposed that social groups have a single leader, research suggests that there are typically two different leadership roles that are held by different individuals. Instrumental leadership is leadership that emphasizes the completion of tasks by a social group.
Group members look to instrumental leaders to “get things” done.” Expressive leadership, on the other hand, is leadership that emphasizes the collective well-being of a social group’s member. Expressive leaders are less concerned with the overall goals of the group than with providing emotional support to group members and attempting to minimize tension and conflict among them. Group members expect expressive leaders to maintain stable relationships within the group and provide support to individual members.
Instrumental leaders are likely to have a rather secondary relationship to other group members. They give orders and may discipline group members who inhibit attainment of the group’s goals. Expressive leaders cultivate a more personal or primary relationship to others in the group. They offer sympathy when someone experiences difficulties or is subjected to discipline, are quick to lighten a serious moment with humor, and try to resolve issues that threaten to divide the group. As the differences in these two roles suggest, expressive leaders generally receive more personal affection from group members; instrumental leaders, if they are successful in promoting group goals, may enjoy a more distant respect.

What does the passage mainly discuss?

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Kindergarten is a fun place (1)....... young children learn. In some special kindergartens, children learn outside most of the day!
Some kindergartens are (2)................ the forest. In these "forest kindergartens," children play freely. They're outside in all kinds of weather. At forest kindergartens, children learn by climbing trees and picking fruit. They also learn about and (3)...... animals. For example, they collect chicken eggs and feed baby mice.
 Little Flower Kindergarten is in Dong Nai, Vietnam. At this school, children learn about farming. They also learn that it is important (4)......healthy food. They grow vegetables in gardens - on the roof! They eat the vegetables they grow in their lunches.
At Fuji Kindergarten in Tokyo, Japan, trees grow inside the building! The classroom windows and sliding doors (5)......... open to the outside most of the year. The roof is a big, wooden circle. Children love to play and run on it.

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

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   Martin Luther King, Jf., is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhood.

   M.L, as he was called, was born in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was born. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.

   M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.

According to the author, M.L. _______.

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The elements other than hydrogen and helium exist in such small quantities that it is accurate to say that the universe is somewhat more than 25 percent helium by weight and somewhat less than 75 percent hydrogen.
Astronomers have measured the abundance of helium throughout our galaxy and in other galaxies as well. Helium has been found in old stars, in relatively young ones, in interstellar gas, and in the distant objects known as quasars. Helium nuclei have also been found to be constituents of cosmic rays that fall on the earth (cosmic rays are not really a form of radiation; they consist of rapidly moving particles of numerous different kinds). It doesn’t seem to make very much difference where the helium is found. Its relative abundance never seems to vary much. In some places, there may be slightly more of it; in others, slightly less, but the ratio of helium to hydrogen nuclei always remains about the same.
Helium is created in stars. In fact, nuclear reactions that convert hydrogen to helium are responsible for most of the energy that stars produce. However, the amount of helium that could have been produced in this manner can be calculated, and it turns out to be no more than a few percent. The universe has not existed long enough for this figure to be significant greater. Consequently, if the universe is somewhat more than 25 percent helium now, then it must have been about 25 percent helium at a time near the beginning.
However, when the universe was less than one minute old, no helium could have existed. Calculations indicate that before this time temperature were too high and particles of matter were moving around much too rapidly. It was only after the one-minute point that helium could exist. By this time, the universe had cooled so sufficiently that neutrons and protons could stick together. But the nuclear reactions that led to the formations of helium went on for only relatively short time. By the time the universe was a few minutes old, helium production had effectively ceased.

What does the passage mainly explain?

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The technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists enjoyed a great advantage. Especially by comparison with Britain, Americans had a wonderfully plentiful supply of wood.
The first colonists did not, as many people imagine, find an entire continent covered by a climax forest. Even along the Atlantic seaboard, the forest was broken at many points. Nevertheless, all sorts of fine trees abounded, and through the early colonial period, those who pushed westward encountered new forests. By the end of the colonial era, the price of wood had risen slightly in eastern cities, but wood was still extremely abundant.
The availability of wood brought advantages that have seldom been appreciated. Wood was a foundation of the economy. Houses and all manner of buildings were made of wood to a degree unknown in Britain. Secondly, wood was used as fuel for heating and cooking. Thirdly, it was used as the source of important industrial compounds, such as potash, an industrial alkali; charcoal, a component of gunpowder; and tannic acid, used for tanning leather.
The supply of wood conferred advantages but had some negative aspects as well. Iron at that time was produced by heating iron ore with charcoal. Because Britain was so stripped of trees, she was unable to exploit her rich iron mines. But the American colonies had both iron ore and wood; iron production was encouraged and became successful. However, when Britain developed coke smelting, the Colonies did not follow suit because they had plenty of wood and besides, charcoal iron was stronger than coke iron. Coke smelting led to technologic innovations and was linked to the emergence of the Industrial Revolution. In the early nineteenth century, the former colonies lagged behind Britain in industrial development because their supply of wood led them to cling to charcoal iron.

The word strikingly in the first paragraph is closest in meaning to     .

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Because the low latitudes of the Earth, the areas near the equator, receive more heat than the latitudes near the poles, and because the nature of heat is to expand and move, heat is transported from the tropics to the middle and high latitudes. Some of this heat is moved by winds and some by ocean currents, and some gets stored in the atmosphere in the form of latent heat. The term “latent heat” refers to the energy that has to be used to convert liquid water to water vapor. We know that if we warm a pan of water on a stove, it will evaporate, or turn into vapor, faster than if it is allowed to sit at room temperature. We also know that if we hang wet clothes outside in the summertime, they will dry faster than in winter, when the temperature is lower. The energy used in both cases to change liquid water to water vapor is supplied by heat - supplied by the stove in the first case and by the Sun in the latter case. This energy is not lost. It is stored as vapor in the atmosphere as latent heat. Eventually, the water stored as vapor in the atmosphere will condense to liquid again, and the energy will be released to the atmosphere.
In the atmosphere, a large portion of the Sun’s incoming energy is used to evaporate water, primarily in the tropical oceans. Scientists have tried to quantify this proportion of the Sun’s energy. By analyzing temperature, water vapor, and wind data around the globe, they have estimated the quantity to be about 90 watts per square meter, or nearly 30 percent of the Sun’s energy. Once this latent heat is stored within the atmosphere, it can be transported, primarily to higher latitudes, by prevailing, large - scale winds. Or it can be transported vertically to higher levels in the atmosphere, where it forms clouds and subsequent storms, which then release the energy back to the atmosphere.

The passage mainly discusses how heat      

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:
Less than a year ago marketing director, David Smith, 33 was behaving like a secet agent. He used to secretly taped all his conversations, he refused to sign his name and he would ask his secretary to check all his emails. Anything he wrote was photocopied and kept as “evidence”. But David isn’t mad, or even mildly eccertric. He suffers from ‘resposibility OCD’, one of more common form of obsessive compulsive disorder, or OCD, as it is usually known.
OCD is now recognized as the second most prevalent mental-health problem, after depression – and the number of reported cases is soaring. Experts estimate that 2% - 3% of the population suffer from the full-blown syndrome, with as many as one in five suffering from a milder form.
OCD sufferers are tortured by obsessional thoughts, such as worrying that their hands are contaminated by germs. The terrible anxiety is only relieved by performing a particular set of behaviours. Unfortunately, any sense of relief is short-lived, which is why the behaviour must be repeated again and again. OCD sufferers know their behavior is irrational, yet feel powerless to stop.
Common treatments are either antidepressants or behavioral therapy with a psychologist, but only 60% of patients show some improvement. However, a new treatment from America is bringing fresh hope to sufferers.
One of the OCD gurus and neuropsychiatrists, Jeffrey Schwartz, has designed the Four Steps program which employs meditation teachniques with the aim of teaching sufferers to manage their symptoms by themselves. “The goal is to learn to override false brain messages”, explains Schwartz.
There are different theories about what causes the disorder. Most experts recognize a genetic element that can be triggered by a stressful event. Schwartz believes that the OCD ‘worry circuit’ is a
direct result of faulty brain chemistry. ‘When someone experiences an OCD thought, one part of the brain knows quite clearly that the hand are not dirty’, explains Schwartz ‘Some part of the brain is standing apart from the symptoms, reflecting on the sheer bizarreness of it all. The objective is to harness this impartial spectator so that patients can use this healthy part of their brain to resist the compulsions.’
David Smith is delighted with the results of Schwartz’s treatment. ‘Now I can sign cheques without a problem’, he says brightly. ‘And I don’t photocopy them either. OCD used to feel like a huge stigma, but I don’t feel handicapped by it any more. You just deal with it.’

Jeffrey Schwartz believes that OCD is caused by .

A.     B. 

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:
Facebook users spend an average of more than 15 hours a month on the social networking site. While there are plenty who caution against such intensive use — and there are a number of studies detailing the harm Facebook could potentially cause — there also are lots of reports extolling the site's virtues. As the social media giant prepares for its upcoming initial public offering, here are some ways Facebook just might be good for you.
Spending time on Facebook can help people relax, slow down their heart rate and decrease stress levels, according to researchers from the Massachusetts Institute of Technology and the University of Milan. In a study published earlier this year, researchers studied 30 students and  found that a natural high was sparked when they were on  the  social media network that led  to  the relaxed heart rates and lower levels of stress and tension. In the study, the students were monitored in three situations: looking at panoramic landscapes, performing complicated mathematical equations and using Facebook. While the first situation was the most relaxing to students and the math problems were the most stressful, the time on Facebook uncovered high levels of attractiveness and arousal. The findings support the researchers' hypothesis that Facebook's success, as well as that of other social media networks, correlates to the specific positive mental and physical state users experience.
While many may argue that social media networks only distract employees, research shows  the opposite may be true. Research from Keas.com found that a 10-minute Facebook break makes employees happier, healthier and more productive. The study examined workers in three groups: one that was allowed no  breaks, one that was allowed to do  anything but use the Internet and one  that was allowed 10 minutes to use the Internet and Facebook. The Facebook group was found to be 16 percent more productive than the group that was not allowed to use the Internet and nearly 40 percent more productive than the group that was allowed no breaks. "Short and unobtrusive breaks, such as a quick surf on the Internet, enables the mind to rest itself, leading to a higher net total concentration for a day's work, and as a result, increased productivity," said Brent Coker of the department of management and marketing at the University of Melbourne in Australia.
Facebook is also in the business of matchmaking. Research shows that nearly 60 percent of singles will friend someone new on Facebook after meeting them in  person. If  they like what they see, 25 percent are likely to contact their new love interest via Facebook. Once the courting is over, nearly 40 percent of those social networking adults will update their relationship status on Facebook, with just 24 percent telling their friends first. Facebook use between couples will continue through the dating process, the research shows. Throughout the day, 79 percent of  couples  said they send partners Facebook messages or chat on the social network. In addition, more than 60 percent would post romantic messages on their significant other's Facebook wall. When the relationship ends, more than half of those surveyed immediately update their status to single, which automatically sends out a notification to their friend list to start the dating cycle over again.

The word "one" in paragraph 3  refers to    _.

Most of the ---139--- to Zien Travel Quarterly are professional writers with whom we have an ongoing relationship. ---140---, we always like to encourage and support new talent. We try to include at least one article per issue from a new writer, but with just four issues a year, the opportunities for publication are quite limited. Before submitting an idea for publication, please read the guidelines at www.zientravel.com/writers, as they outline our specific areas of interest in detail. 141---.Note that we aim to respond to all correspondence in a timely manner, but there may be times when we are slow to respond. For this reason, we ask that you please be 142---.

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Read the passage and choose the best option A, B, C, D to complete it.

Full Moon festival, also known as Mid-Autumn Festival or ‘Tet Trung Thu’ in Vietnamese is held (1) _________ the 14th and 15th of the August lunar month. This is an (2) _________ harvest festival celebrated not only in Vietnam (3) ________ in other wet rice countries in Asia such as China, Taiwan, Hongkong, Japan, and Korea. The Full Moon festival offers leisure time for family members to come back home, organize and participate in a wide range of activities including children carrying paper lanterns, lion dances, ….

In fact, there aren’t (4) _______ important customs you must follow but it is good to find wonderful places to visit during this period. Mid-Autumn festival is best enjoyed in Hoi An by strolling down and admiring (5) ______ paper lanterns floating the Thu Bong Riverside. If you base in Hanoi, it is (6) _______ recommended to go to Thang Long Royal Citadel, My Dinh National Stadium, and Hoan Kiem Lake to enjoy a festive atmosphere of fun, safety, and peace.
4.In fact, there aren’t (4) _______ important customs you must follow but it is good to find wonderful places to visit during this period.