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The Power of Crowdsourcing
There is a famous old saying that when trying to solve a problem “two heads are better than one”. Yet until recently, businesses would often rely on one key person to get important tasks done. But thanks to a phenomenon called crowdsourcing, more and more companies are allowing their consumers to have their say when designing new products. The term “crowdsourcing” refers to the process of outsourcing jobs which were once done by a single person to a large group (or a crowd) of people. In the past, crowdsourcing wasn’t practical, as it was impossible to gather thousands of like-minded people together to share opinions. Now, thanks to the Internet, online forums, and social media, this isn’t a difficult task at all. There are many important applications for crowdsourcing in business. For example, if a small business was looking to develop a business logo, it might employ a single designer and hope for the best. However, with crowdsourcing, companies can specify some guidelines about their project, set a budget, and start a design contest online. Within hours, it will likely receive hundreds of designers sending them logos. In the end, they can choose the design they like best and the winner will get compensated. Crowdsourcing has other applications as well. A website called Duolingo is using crowdsourcing to translate documents into different languages. It offers free lessons to language learners. As part of their tests, users translate lines to test their knowledge. Then, a computer programme will analyze thousands of test results for consistency and arrange an accurate translation. Not everyone is sold on crowdsourcing, though. In many cases, it may be better to rely on the opinion of a few specialized professionals than information from a crowd. For instance, it makes more sense to trust the opinion of one top doctor than to take the advice of 1,000 random people regarding a health issue. Another criticism is the low wage that crowdworkers usually receive. Since crowdworkers are freelancers and not employees, they can be paid less than minimum wage. Whether you love or hate crowdsourcing, it appears to be here to stay. So before you make any financial judgements, consider following the crowd and give crowdsourcing a try.
7. Why might someone agree to translate a document for Duolingo?

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Future Cures for a Better Future
We all wish we could stay forever young, maintaining perfect health throughout our lives. Unfortunately, this is just a pipe dream. In reality, our bodies start to fall apart as we age. Due to genetic weaknesses, neglecting our bodies, and reckless actions, people often find themselves facing a host of issues. Currently, many of these problems can’t be cured by modern medicine. Yet there is hope in the future that remedies will be developed to eliminate these conditions once and for all. One disease which prevents people from enjoying their golden years is Alzheimer’s. It is a brain condition which causes sufferers to slowly lose their memory and intellectual capabilities, and nearly 25 million people are affected by it. Although most of its victims get sick when they are senior citizens, about 5 percent start to show some effects when they are in their 40s or 50s. Within the next five to seven years, medicines should hit the market which greatly reduce the effects of Alzheimer’s, and may even cure it completely. In addition, researchers are working on a vaccine that could prevent people from getting it in the first place. Cancer is one of the deadliest diseases on the Earth. It can strike any organ or quickly spread throughout the body. Despite pumping millions of dollars into cancer research, it has proved to be a difficult disease to defeat. However, scientists are optimistic that they can turn it into a manageable condition within the next decade using a new approach. Doctors envision working with individuals’ DNA to develop more personalized treatments. Although this may not provide a complete cure, it should allow them to extend patients’ lives for many years. Although it is not a disease, baldness is something that many men dread. Although whether we lose hair is based primarily on genetics, many men feel that they did something wrong to cause it. As a result, men have been tricked with pills and routines that promise to cure baldness but actually do nothing at all. As it looks, there may be some effective treatments on the horizon. One involves cloning healthy hair follicles to ensure that men maintain a healthy head of hair. Another involves reawakening old hair follicles that have stop functioning. In the meantime, shaved heads are in style, so men should realize that they have other options.
3. How do doctors plan to treat cancer in the future?

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Glenbrook South (GBS) High School is in a suburb of Chicago, lllinois, in the United States. It is an award-winning school with a highly competent teaching staff. It has over 400 Asian Pacific American students-over 17 percent of the students in the school. Of these, the majority are Korean American. This is very unusual in a state where Korean Americans are less than 1 percent of the population. The interactions of the Korean American students at GBS were the subject of an article in Asian Week magazine. Different Korean American students react differently to being in a high school where most students are white. Professor Pyong Gap Min, an expert on Korean life in America, believes that Korean Americans in this situation can sometimes feel inhibited or ashamed of their Korean identity. Asian Week interviewed a number of GBS students, and each had a different attitude. Eighteen-year-old Alice said that she used to spend time only with Korean American friends. Although she felt secure with those friends, she found herself motivated to form closer relationships with non-Koreans, too. She said that she felt she was missing out on new experiences and challenges. Seventeen-year-old John moved in the opposite direction. In junior high school, most of John's friends were white. After coming to GBS, his sense of his Korean American identity was restored, and he decided to have mainly Korean American friends. He feels that he and his Korean American friends understand each other better. For example, they understand about severe parental pressures to succeed at school; John felt his white friends couldn't really understand. Sixteen-year-old Paul has some Korean American friends, but he says he spends most of his time with his white friends. He is often the only Asian American in the group, but he doesn't mind. What Paul likes about the white culture is that he can be more radical - he can be as loud and funny as he wants to be. He says he doesn't see as much of that among the Asian students. Without belittling the importance of what these students had to say, it's important to remember that their opinions at this phase of their lives are bound to change as they grow into adulthood. But these honest opinions can help US better understand issues of cultural relations, and their honesty might help Americans from different cultural groups to get along better in the future. 
6. The word "they" in paragraph 3 refers to: 

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Books are normally thought of in terms of the pages that are looked at. They are simple, two-dimensional objects that we read. There are words on the page and occasionally (1)_________ that help us see more clearly what the words are being used to describe. They are sources of knowledge, but more often than not they aren’t considered very special. Some books take it another steps further, though, and their pages jump (2)_________ and form three-dimensional objects. These books can make adults smile and cause children to be wide-eyed with (3)__________. Called pop-up books in our times, they have been around longer than most people think they have. Pop-up books were originally called mechanical books, and these paper (4)________ took a lot of work to make. They were not for children at all, although centuries ago there were practically no books made for children. The mechanical books helped illustrate (5)__________ things as the phases of the moon or were used to teach complex theories

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Saving the Rainforests
One of the hottest topics related to the environment is rainforests. Despite always being mentioned in the news, many people don’t know very much about these areas or understand why they are so important. The name “rainforest” actually does a pretty good job of describing what they are – tall forests that receive high amounts of precipitation. In a year, rainforests get between 250 to 450 centimetres of precipitation. There are two types of rainforests: tropical rainforests and temperate rainforests. Tropical rainforests are more plentiful and are located in warmer climates, while temperate rainforests are found in places where the weather is a bit milder. In terms of location, rainforests can be found on every continent with the exception of Antarctica. Although they only cover 6 percent of the Earth, over 50 percent of the Earth’s animal and plant species can be found there. Many biologists estimate that there are possibly millions of additional species present there that have yet to be discovered and classified. Over the years, rainforests have gained the nickname “the world’s pharmacy” because more than 25 percent of natural medicines were found there. Many herbs that are used to make medicines can only be found in rainforests. Rainforests are also home to several tribes that have lived off the land for thousands of years. During this time, they have survived by hunting animals and gathering fruits and vegetables. They also possess tremendous knowledge when it comes to crafting and applying medicines made from herbs and plants. Over time, their unique way of life has declined as they have come in contact with modern civilization. Despite their numerous benefits, rainforests have been disappearing at a rapid speed. As the Earth’s population continues to expand, developers have been cutting down their trees to create new lands for farming or urban projects. This could have unfortunate long-term effects on our planet. If deforestation continues at this rate, it is possible that a quarter of all species on the Earth may become extinct in the next 50 years. As it stands, plenty of damage has already occurred. West Africa has had 90 percent of its rainforests destroyed, while the island nation of Madagascar has eliminated 66 percent of its original rainforests as well. As a result, many charities have sprung up with the goal of purchasing and protecting the remaining rainforests. With their help, hopefully we can stop the destruction of one of the planet’s most vital assets.
6. The word “this” in paragraph 3 refers to ____________

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Inside a 4D Film
A lot of people think that 3D films are pretty cool. When you watch a 3D film, it sometimes feels like you can reach out and touch the things that you see. In the future, however, 3D might be replaced by something even more advanced: 4D. What you see in a 4D film is the same as what you see in a 3D film. The screen is the same, and the glasses are the same. 4D films are different because they don’t use 3D technology. People in the audience also feel physical things during the films. Let’s look at a few examples. Let’s say that you are watching a film about earthquakes. If you are watching a 4D film, maybe your seat will suddenly start to shake. It will feel like you are in the middle of an earthquake, but you are not. The 4D effects make your seat shake. Or perhaps during the film, one of the characters gives flowers to another character. The people in the cinema might suddenly smell flowers. The point of 4D films is to make people feel like they are in the film. When we watch films these days, we only use two senses: our sense of sight and our sense of hearing. If we use our other senses, the film might feel more real to us. 4D films already exist. The film Avatar was released everywhere in 3D, but in Korea and Hong Kong, it was also released in 4D. People who watched Avatar in 4D feel wind and rain. They also smelled smoke from the weapons in the film, and sometimes their seats moved. Will 4D replace 3D films? It is possible, but we can’t be sure yet. One problem with 4D films is that it is very expensive to show them in theaters. Before a theater shows a 4D film, it has to buy a lot of special equipment. However, 4 films are catching on. Other films shown in 4D include Shrek 4-D, and Iron Man 3.
2. What does the second sentence of the sixth paragraph mean?

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An important point to remember if you like spending time out in the open air is that the human head doesn’t work very well outdoors if it becomes too hot, cold or wet. That’s why a hat is a good investment, whenever you are planning to go out and about. Surprisingly, a single waterproof hat with a brim will do the (1)______ adequately in most conditions. In cold climates, the problem is that the head is (2)______ heat all the time. As much as fifty to sixty per cent of your body’s heat is lost through the head and neck, (3)______ on which scientist you believe. Clearly this heat loss needs to be prevented, but it’s important to remember that hats don’t actually keep you warm, they simply stop heat escaping. Just as important is the need to protect your neck from the effects of bright sunlight, and the brim of your hat will do this. If you prefer a baseball cap, (4)______ buying one that has a drop down ‘tail’ at the back to stop your neck getting sunburnt. And in wet weather (5)______, hats are often more practical than pooling up the hood of your waterproof coat because when you turn your head, the hat goes with you, whereas the hood usually does not

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The Great Debate over GM Foods
One of the hottest topic in agriculture today is genetically modified (GM) foods. GM foods are foods that come from plants that have had their DNA altered using biotechnology. GM foods have been on the market since 1994, when a company called Calgene started selling GM tomatoes. Since then, other GM foods including papaya, corn, and plums to name a few have been developed. The main benefit of GM foods is that they can be a more economical solution than non GM foods. Scientists found a way to modify many plants to make them more resistant to weeds, diseases, and pests. This allows the plants to grow in tougher climates and conditions, which should lead to lower food prices and increase the overall food supply. However, many consumers still have their doubts about GM foods. For one they feel that by eating GM foods people are messing with nature. Until now humans have survived on food that was produced without any interference from science. Even though many lab studies show that GM foods are safe in the short term, opponents feel that not enough long-term testing has been done yet. Another major issue in the GM foods debate is its labelling. Current US laws do not require producers to label their foods as GM. This has upset many consumers who feel they have the right to clearly know how the food they are buying is produced. On the other hand, producers are afraid to label their foods as GM because they feel it will result in less product sales, as people may assume that there is something wrong with GM foods. This controversy is not just on the level of consumers and producers. The issue of non GM foods has also become a block to a major free trade agreement between the US and Europe. GM foods are banned throughout most of Europe, while they are quite common throughout the US. Since many American GM food producers would like to sell their foods overseas in Europe, the US is requesting that European nations eliminate laws banning GM foods. However, many European nations are not fully convinced that these products are safe.
3. What is the third paragraph mainly about?

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The penny press, which emerged in the United Sates during the 1830’s, was 1 a powerful agent of mass communication. These newspapers were little dailies, generally four pages in length, written for the mass taste. They differed from the 3 staid, formal presentation of the conservative press, with its emphasis on political and literary topics. The new papers were brief and cheap, emphasizing sensational reports of police courts and juicy scandals as well as human interest 5 stories. Twentieth – century journalism was already foreshadowed in the penny press of the 1830’s. 7 The New York Sun, founded in 1833, was the first successful penny paper, and it was followed two years later by the New York Herald, published by James 9 Gordon Bennett. Not long after, Horace Greeley issued the New York Tribune, which was destined to become the most influential paper in America. Greeley 11 gave space to the issues that deeply touched the American people before the Civil War – abolitionism, temperance, free homesteads, Utopian cooperative settlements, and the problems of labor. The weekly edition of the Tribune, with 13 100,000 subscribers, had a remarkable influence in rural areas, especially in Western communities. 15 Americans were reputed to be the most avid readers of periodicals in the world. An English observer enviously calculated that, in 1829, the number of 17 newspapers circulated in Great Britain was enough to reach only one out of every thirty – six inhabitants weekly; Pennsylvania in that same year had a 19 newspaper circulation which reaches one out of every four inhabitants weekly. Statistics seemed to justify the common belief that Americans were devoted to periodicals. Newspapers in the United States increased from 1,200 in 1833 to 21 3000 by the early 1860’s, on the eve of the Civil War. This far exceeded the number and circulation of newspapers in England and France.
7. The word "avid" in line 16 is closest in meaning to: 

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My father was disappointed __________ my school result.

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Even before the turn of the century, movies began to develop in two major directions: the realistic and the formalistic. Realism and formalism are merely general, rather than absolute terms. When used to suggest a tendency toward either polarity, such labels can be helpful, but in the end they are still just labels. Few films are exclusively formalist in style, and fewer yet are completely realist. There is also an important difference between realism and reality, although this distinction is often forgotten. Realism is a particular style, whereas physical reality is the source of all the raw materials of the film, both realistic and formalistic. Virtually all movie directors go to the photographable world for their subject matter, but what they do with this material, how they shape and manipulate it determines their stylistic emphasis. Generally speaking, realistic films attempt to reproduce the surface of concrete reality with a minimum of distortion. In photographing objects and events, the filmmaker tries to suggest the copiousness of life itself. Both realist and formalist film directors must select and hence emphasize certain details from chaotic sprawl of reality. But the element of selectivity in realistic films is less obvious. Realists, in short, try to preserve the illusion that their film world is not manipulated, an objective mirror of the actual world. Formalists, on the other hand, make no such pretense. They deliberately stylize and distort their raw materials so that only the very naive would mistake a manipulated image of an object or event for the real thing. We rarely notice the style in a realistic movie; the artist tends to be self-effacing. Some filmmakers are more concerned with what is being shown than how it is manipulated. The camera is used conservatively. It is essentially a recording mechanism that reproduces the surface of tangible objects with as little commentary as possible. A high premium is placed on simplicity, spontaneity, and directness. This is not to suggest that these movies lack artistry, however, at its best the realistic cinema specializes in art that conceals art.
6. The word "preserve" in paragraph 2 is closest in meaning to: 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions :
Of the many sports that people play, most have evolved over time from simpler games or a combination of different games. Basketball is different in this (1)________ because it was a game specifically invented to be an indoor sport. Its purpose was not to be just fun and challenging. (2)_________, it was invented fortrack and field athletes to use in order to stay in shape during the winter, while also being relatively safe to play. The person who made up the game was a physical education teacher at a school in Springfield, Massachusetts named Dr. James Naismith. It only took Naismith two weeks to come (3)__________ the game. He took a basket that had originally held peaches and nailed it high up on the walls of a gymnasium. The players then used a soccer ball and to get it in the basket while being blocked by other players. Naismith’s reason for putting the basket high up on the wall came from his (4)_________ that more injuries in other games happened near where a goal was. In this case, the goal was the basket, so he believed the higher up it was, the safer the players would be. Eventually, the game progress like so many other sports did, and it became quite popular. A second basket was added, rules of play were (5)_________, and the sport of basketball as we know today was born

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Although only a small percentage of the electromagnetic radiation that is emitted by the Sun is ultraviolet (UV) radiation, the amount that is emitted would be enough to cause severe damage to most forms of life on Earth were it all to reach the surface of the Earth. Fortunately, all of the Sun’s ultraviolet radiation does not reach the Earth because of a layer of oxygen, called the ozone layer encircling the Earth in the stratosphere at an altitude of about 15 miles above the Earth. The ozone layer absorbs much of the Sun’s ultraviolet radiation and prevents it from reaching the Earth. Ozone is a form of oxygen in which each molecule consists of three atoms (O3) instead of the two atoms (O2) usually found in an oxygen molecule. Ozone forms in the stratosphere in a process that is initiated by ultraviolet radiation from the Sun. UV radiation from the Sun splits oxygen molecules with two atoms into free oxygen atoms, and each of these unattached oxygen atoms then joins up with an oxygen molecule to form ozone. UV radiation is also capable of splitting up ozone molecules; thus, ozone is constantly forming, splitting, and reforming in the stratosphere. When UV radiation is absorbed during the process of ozone formation and reformation, it is unable to reach Earth and cause damage there. Recently, however, the ozone layer over parts of the Earth has been diminishing. Chief among the culprits in the case of the disappearing ozone, those that are really responsible, are the chlorofluorocarbons (CFCs). CFCs meander up from Earth into the stratosphere, where they break down and release chlorine. The released chlorine reacts with ozone in the stratosphere to form chlorine monoxide (ClO) and oxygen (O2). The chlorine then becomes free to go through the cycle over and over again. One chlorine atom can, in fact, destroy hundreds of thousands of ozone molecules in this repetitious cycle, and the effects of this destructive process are now becoming evident.
9. According to the passage, what happens after a chlorine molecule reacts with an ozone molecule?

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For many American university students, the weeklong spring break holiday means an endless party on a sunny beach in Florida or Mexico. In Panama City Beach, Florida, a city with a permanent population of around 36,000, more than half a million university students arrive during the month of March to play and party, making it the number one spring break destination in the United States. A weeklong drinking binge is not for anyone, however, and a growing number of American university students have found a way to make spring break matter. For them, joining or leading a group of volunteers to travel locally or internationally and work to show problems such as poverty, homelessness, or environmental damage makes spring break a unique learning experience that university students can feel good about. Students who participate in alternative spring break projects find them very rewarding. While most university students have to get their degrees before they can start helping people, student volunteers are able to help people now. On the other hand, the accommodations are far from glamorous. Students often sleep on the floor of a school or spend the week camping in tents. But students only pay around $250 for meals and transportation, which is much less than some of their peers spend to travel to more traditional spring break hotspots. Alternative spring break trips appear to be growing in popularity at universities across the United States. Students cite a number of reason for participating. Some appreciate the opportunity to socialize and meet new friends. Others want to exercise their beliefs about people’s obligation to serve humanity and make the world a better place. Whatever their reason, these students have discovered something that gives them rich rewards along with a break from school work.
5. Which of the following gives the main idea of the third paragraph?

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What was the name of the man? You met and talked to him this morning.

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 word “them” in line 11 refers to     .

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The Finer Points of Fair Trade
Throughout the year, we buy foods and beverages from a variety of sources. However, few of us take the time to consider the lives of the people who make these things. In many cases, these goods are produced by poor workers who have trouble surviving on their salaries. A social movement called “Fair Trade” is trying to change this by ensuring that workers are paid decent wages for their efforts. The Fair Trade movement aims to create a membership between customers and producers that is based on respect and fairness. Consumers hope that by supporting fair trade goods they are empowering workers in developing countries to live better lives. Consumers also benefit because they receive high-quality products and have peace of mind that these workers aren’t mistreated. Fair Trade also benefits the environment, as Fair Trade goods are produced with minimal pesticides and pollutants. The first Fair Trade mark was introduced in 1988 by a Dutch group called Solidaridad, which focused on labeling fair trade coffee imported into Holland from Mexico. Shortly after, other groups in North America and Europe followed their lead. These groups started to seek Fair Trade benefits for workers producing wine, honey, bananas, flowers, and several other goods. Then, in 1997, the Fairtrade Labeling Organization International (FLO) was established to unite all of these independent groups into one organization and set unified standards worldwide. In 2002, the FLO launched the FAIRTRADE Certificate Mark, which became an international symbol that labeled goods met the environmental, economic, and social requirements set by FAIRTRADE International (FLO). If consumers spot this mark on goods, they are assured that the workers producing them are receiving a suitable payment for their services. Major corporations are also getting involving in the Fair Trade movement, deluding Starbucks. The multi-national coffee retailer now purchases over 93 percent of its coffee from ethical sources. Furthermore, it has pledged to increase that number to 100 percent by 2025. If you are willing to join Starbucks and millions of other consumers around the globe, keep your eyes out for the FAIRTRADE mark next time you go food shopping.
4. The word “decent” in paragraph 1 is closest in meaning to _________

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Students working for their first degree at university are called undergraduates. Then they take their degree we say they graduate, and then they are called graduates. If they continue studying at university after they have graduated, they are called post-graduates. Full-time university students spend all their free time studying. They have no other employment. Their course usually lasts for three or four years. Medical students have to follow a course lasting for six or seven years. Then they graduate as doctors. In Britain, full-time university students have three terms of about ten weeks in each year. During these terms they go to lectures or they study by themselves. Many students become members of academic societies and sports clubs and take part in their activities. Between the university terms they have vacations (or holiday periods). Their vacations are long, but of course they can use them to study at home.

According to the passage, students working for their first degree at   ..........  are called undergraduates.

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This site/ famous/ thrilling/ scenery

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The Wonders of Wetlands
If you’re searching for scenic places or areas, visiting wetlands probably won’t be high on your list. Wetlands are areas of land that are often saturated with water and they are quite an eyesore. Although they might not look very pretty, they play an important part in keeping the environment clean and suitable for plant and animal life. With the exception of Antarctica, wetlands occur naturally on every continent. There are many different types of wetlands on the Earth, including bogs, swamps, and marshes. Along with rainforests, they are among the most diverse places on the Earth. In addition to naturally-occurring wetlands, humans are creating artificial ones for a number of purposes related to water management. One of the main benefits of wetlands is that they can prevent floods. They do so by storing water temporarily and then slowly releasing it over time. Wetlands operate similarly to a sponge. When it rains heavily and water levels rise, they absorb the excess water. This prevents runoff from entering streams and keeping them from overflowing. Then, when water levels become low in the future, they will release it. In many cases, wetlands offer a much more affordable solutions than dams. However, it’s important to note that wetlands, like dams, don’t eliminate all dangers from flooding. In cases of extremely heavy rainfall, wetlands can fill up and any additional water will start to run off. Wetlands can also play a part in water purification. Agricultural practices, urban runoff, and sewage waste are a major cause of water pollution. Wetlands contain plants and organisms that can reduce this pollution by filtering out unwanted substances such as chemicals, and decomposing matter, as well as sediment. Wetlands have additional benefits for the environment as well. They can help to feed nearby fish populations by releasing vegetative matter to rivers. Also, many amphibians use wetlands as breeding grounds because it provides places for foraging and the shallow water they require for reproduction. Some birds also use wetlands for migration, as they can settle in trees and then raid the wetland’s waters for fish when they’re hungry. Although wetlands may not look pretty, it’s clear that they are capable of doing the dirty work required to keep our planet clean and ensure that the circle of life remains unbroken.
7. Which type of the following is an example of the amphibians?