Read the following passage and choose the best answer (A, B, C, D):
Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth. Overpopulation is caused by number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which results in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life. The effects of overpopulation are quite severe. The first of these is the depletion of resources. The Earth can only produce a limited amount of water and food, which is falling short of the current needs. Most of the environmental damage being seen in the last fifty odd years is because of the growing number of people on the planet. They are cutting down forests, hunting wildlife in a reckless manner, causing pollution and creating a host of problems. Those engaged in talking about overpopulation have noticed that acts of violence and aggression outside of a war zone have increased tremendously while competing for resources. With the overuse of coal, oil and natural gas, it has started producing some serious effects on our environment. Rise in the number of vehicles and industries have badly affected the quality of air. Rise in amount of CO2 emissions leads to global warming  Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth. Overpopulation is caused by number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which results in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life. The effects of overpopulation are quite severe. The first of these is the depletion of resources. The Earth can only produce a limited amount of water and food, which is falling short of the current needs. Most of the environmental damage being seen in the last fifty odd years is because of the growing number of people on the planet. They are cutting down forests, hunting wildlife in a reckless manner, causing pollution and creating a host of problems. Those engaged in talking about overpopulation have noticed that acts of violence and aggression outside of a war zone have increased tremendously while competing for resources. With the overuse of coal, oil and natural gas, it has started producing some serious effects on our environment. Rise in the number of vehicles and industries have badly affected the quality of air. Rise in amount of CO2 emissions leads to global warming  
4. What is the main idea of paragraph 3?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions:
There is substantial evidence that students going off to college have changed over the years. For one thing, studies show that they are emotionally closer to their parents and their parents to them. One thing that means is that they depend on each other more for happiness. It puts a burden on children for parents to use their children as vehicles for their own happiness - although today’s young people seem complicit in this arrangement, perhaps because they have known no other way even if it creates anxiety in the children. That’s one reason parents like to be involved in their children’s college experiences, and colleges have had to devise novel ways of getting parents off campus when they transport their kids to school.
There’s also evidence that students today seem to be choosing schools with reference to proximity to home. The closer a student is to home, the easier it is to bring the laundry home and to land in your old bed with tea and sympathy when you have the sniffles. And the easier it is for parents to visit you at university whenever the mood strikes. The amount of visiting parents do is far more than in generations past.
But in a real sense, students don’t really leave their parents behind. Their parents go to college right along with them - in their front pockets. That is, the parents are a speed dial away by cellphone. This, of course, significantly reduces independence. A student doesn’t get the chance to solve minor problems on his own
- he just calls Mom or Dad. A student has initial problems getting along with a roommate? A roommate doesn’t do laundry as often as the other roommate wishes? A student gets a C grade on her first paper? Instead of absorbing the negative information and figuring out how to resolve the problem or how to do better, the call gets made to home, where Mom or Dad solves the problem, often by calling the school administration. This kind of behavior is, sadly, commonplace today and is a mark of the lack of coping skills among students because all the lumps and bumps have been taken out of life for them until now.
In addition to being tethered to parents, incoming freshmen are now very heavily connected by cellphone to classmates from high school, who are presumably at other colleges. So there isn’t the great impetus to mix and venture forth to meet new people, to get out of one’s comfort/one, to get drawn into new experiences, that has traditionally marked the beginning of freshman year. The laws of physics still apply, 6 and it is difficult to be meeting new people and seeking novel experiences while you are talking to your old pals.

Colleges have had to devise ways of getting parents off campus because     .

Read the following passage and choose the best answer (A, B, C, D):
In all the debate about conservation of natural landscapes, we must not forget that the 19th century also saw the development of interest in the cultural past. Although archaeology was around 100 years old at this point, at least in the Old World, it was largely an exercise in treasure hunting - digging up the treasures of the past as curiosities for museums or for the private collections of those who funded the dig. Changes in attitudes and law throughout the 19th century meant that monuments and artefacts were becoming part of the study of the past, no longer merely trinkets and curiosities, but indicators of a culture’s development and identity. Modern archaeology would not arrive until the 20th century and the concept of an archaeological landscape is younger still. The first laws to protect and conserve cultural heritage came into place in the late 19th and early 20th centuries in the developed countries. In the US, the first such law was the Antiquities Act in 1906 which gave the office of president the power to set aside areas of land as protected cultural assets, known as “National Monuments”. This law was in place until 1979 when it was replaced with the Archaeological Resources Protection Act but several other laws came into place before then that  required archaeologists to label and give proper contexts to monuments and artefacts. There was also a global movement to protect by law and provide resources and funds for monuments that were nationally important, but also those deemed significant to human civilization as a whole. Founded in 1945, has many responsibilities, one of the most important as far as archaeological conservation is concerned is the World Heritage List. The list began in 1975 as a recognition of globally important sites. The first 12 added on that first day included: L’Anse Aux Meadows in Canada, The Galapagos Islands, Quito in Ecuador, Krakow, and Mesa Verde National Park in the US. Today, there are over 1,000 cultural monuments and natural landscapes on this list. In the 21st century, it is common for countries to have laws in place to protect monuments, sites, and landscapes of cultural or historical importance and governmentestablished charities or government departments assigned to their management, upkeep or conservation. The threats to them and their conservation go beyond the issues of the 19th century (plunder and theft)
8. Which of the following can be inferred from the passage?

Choose the best answer:
That about ___________ the solution together this afternoon?

Read the following passage and choose the best answer (A, B, C, D)
The Broadway hit “Hamilton” earned $1.9 million in ticket sales per week, according to The New York Times. “Hamilton” was awarded the 2016 Pulitzer Prize in Drama and it won 11 Tony awards out of 16 nominations, according to broadway.com. Lin-Manuel Miranda, 37, who created the show and starred as Alexander Hamilton, grew up in New York, immersed in music and performance art, although his family could rarely afford Broadway show tickets, according to published biographies. He watched “Les Miserables” at age 7, and fell in love with the art form. He starred in “Pirates of Penzance” during high school, and took a liking to hip-hop and R&B. Miranda went to Wesleyan University, where he studied theater, appeared on stage and drafted his own work. He was cast as the lead in the 2007 off-Broadway musical “In the Heights,” which eventually went to Broadway in 2008. That show earned four Tony Awards and was nominated for the drama category of the Pulitzer Prize, according to published reports. Miranda was encouraged to be a lawyer at a young age, but he always shined when performing, according to playbill.com. As a young adult, he came to a dilemma that would change his life. He was substitute teaching at Hunter College High School, his alma mater, and was offered a position as a part-time English teacher there. He was torn between taking the safe job or pursuing writing. Miranda turned to his father and asked, “What should I do? Should I keep teaching or should I just kind of sub and do gigs to pay the rent and really throw myself into writing full time?” His father answered his question in a letter: “I really want you to keep the job - that’s the smart “parent thing” to do - but when I was 17, I was a manager at Sears in Puerto Rico, and I basically threw it all away to go to New York (and) I didn’t speak a lot of English. It made no sense, but it was what I needed to do. It makes no sense to leave your job to be a writer, but I have to tell you to do it. You have to pursue that if you want." Miranda declined the part-time teaching job, threw himself into writing and “Hamilton!” was born.  
1. Which best serves as the title for the passage?

Read the following passage and choose the best answer (A, B, C, D):
Going to a restaurant shouldn’t be your excuse to eat unhealthy foods. Follow these tips and not only will you enjoy your meal more, you’ll feel satisfied and happy when you’re done. First, ask for it your way. Dining out is no time to be a meek consumer, notes Michael F. Jacobson, Ph.D., executive director of the Center for Science in the Public Interest (CSPI) and coauthor of the book Restaurant Confidential. “You need to be an assertive consumer by asking for changes on the menu,” he says. For instance, if an item is fried, ask for it grilled. If it comes with French fries, ask for a side of veggies instead. Ask for a smaller portion of the meat and a larger portion of the salad; for salad instead of coleslaw; baked potato instead of fried. “Just assume you can have the food prepared the way you want it,” says Dr. Jacobson. “Very often, the restaurant will cooperate.” Second, order A Salad before ordering anything else on the menu. Scientists at Pennsylvania State University found that volunteers who ate a big veggie salad before the main course ate fewer calories overall than those who didn’t have a first-course salad, notes Novick. However, remember: Salads Shouldn’t Be Fatty. This is a vegetable course-keep it tasty but healthy. That means avoiding anything in a creamy sauce (coleslaw, pasta salads, and potato salads), and skipping the bacon bits and fried noodles. Instead, load up on the raw vegetables, treat yourself to a few well-drained marinated vegetables (artichoke hearts, red peppers, or mushrooms), and for a change, add in some fruit or nuts. Indeed, fruits such as mango, kiwi, cantaloupe, and pear are often the secret ingredient in four-star salads.  
1. Which of the followings best replaces the word "meek" in the first paragraph?

Each sentence has a mistake. Find it by chosing A B C or D

According to the Canadian Pulp and Paper Association, Canada supplies 34% of the world’s wood pulp and 49% of it newsprint paper

A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometres in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the tune it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word "radar" in fact gets its name from the term "radio detection and ranging". "Ranging" is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots radar is essential for air traffic control tracking ships at sea, and for tracking weather Systems and storms.

 According to the passage, what can radar detect besides location of objects?

Read the following passage and choose the best answer (A, B, C, D):
Normally a student must attend a certain number of courses in order to graduate, and each course which he attends gives him a credit which he may count towards a degree. In many American universities the total work for a degree consists of thirty-six courses each lasting for one semester. A typical course consists of three classes per week for fifteen weeks; while attending a university a student will probably attend four or five courses during each semester. Normally a student would expect to take four years attending two semesters each year. It is possible to spread the period of work for the degree over a longer period. It is also possible for a student to move between one university and another during his degree course, though this is not in fact done as a regular practice. For every course that he follows a student is given a grade, which is recorded, and the record is available for the student to show to prospective employers. All this imposes a constant pressure and strain of work, but in spite of this some students still find time for great activity in student affairs. Elections to positions in student organizations arouse much enthusiasm. The effective work of maintaining discipline is usually performed by students who advise the academic authorities. Any student who is thought to have broken the rules, for example, by cheating has to appear before a student court. With the enormous numbers of students, the operation of the system does involve a certain amount of activity. A student who has held one of these positions of authority is much respected and it will be of benefit to him later in his career.
Normally a student would at least attend ____ classes each week.
4. Some students are enthusiastic for positions in student organizations probably because ____

In the mid - nineteenth century, the United States had tremendous natural resources that could be exploited in order to develop heavy industry. Most of the raw materials that are valuable in the manufacture of machinery, transportation facilities, and consumer goods lay ready to be worked into wealth. Iron, coal, and oil - the basic ingredients of industrial growth - were plentiful and needed only the application of technical expertise, organizational skill, and labor.

One crucial development in this movement toward industrialization was the growth of the railroads. The railway network expanded rapidly until the railroad map of the United States looked like a spider's web, with the steel filaments connecting all important sources of raw materials, their places of manufacture, and their centers of distribution. The railroads contributed to the industrial growth not only by connecting these major centers, but also by themselves consuming enormous amounts of fuel, iron, and coal.

Many factors influenced emerging modes of production. For example, machine tools, the tools used to make goods, were steadily improved in the latter part of the nineteenth century - always with an eye to speedier production and lower unit costs. The products of the factories were rapidly absorbed by the growing cities that sheltered the workers and the distributors. The increased urban population was nourished by the increased farm production that, in turn, was made more productive by the use of the new farm machinery. American agricultural production kept up with the urban demand and still had surpluses for sale to the industrial centers of Europe.

The labor that ran the factories and built the railways was recruited in part from American farm areas where people were being displaced by farm machinery, in part from Asia, and in part from Europe. Europe now began to send tides of immigrants from eastern and southern Europe - most of whom were originally poor farmers but who settled in American industrial cities. The money to finance this tremendous expansion of the American economy still came from European financiers for the most part, but the American were approaching the day when their expansion could be financed in their own " money market".

The word" themselves" in the paragraph 2 refers to ________

Read the following passage and choose the best answer (A, B, C, D):
In Africa, people celebrate with joy the birth of a new baby. The Pygmies would sing a birth-song to the child. In Kenya, the mother takes the baby strapped to her back into the thorn enclosure where the cattle is kept. There, her husband and the village elders wait to give the child his or her name. In West Africa, after the baby is eight days old, the mother takes the baby for it’s first walk in the big, wide world, and friends and family are invited to meet the new baby. In various African nations, they hold initiation ceremonies for groups of children instead of birthdays. When children reach a certain designated age, they learn the laws, beliefs, customs, songs and dances of their tribes. Some African tribes consider that children from nine to twelve are ready to be initiated into the grown up world. They may have to carry out several tests. Masai boys around thirteen years old to seventeen undergo a two stage initiation. The first stage lasts about three months. The boys leave their parents’ homes, paint their bodies white, and are taught how to become young warriors. At the end of this stage, they have their heads shaved and they are also circumcised. The second stage, the young warriors grow their hair long and live in a camp called a manyatta where they practice hunting the wild animals that might attack the Masai herds. This stage may last a few years. When they are ready, they will marry and become owners of large cattle herds like their fathers. The girls are initiated when they are fourteen or fifteen. They are taught by the older women about the duties of marriage and how to care for babies. Soon after that they are married and lead a life similar to that of their mothers  
1. What does the passage mainly discuss?

Read the following passage and choose the best answer (A, B, C, D):
Books have been around for thousands of years. When ancient civilizations first started developing writing systems, they would write on just about anything, from stone to tree bark. Ancient Egyptians were the first to use paper-like materials, called “papyrus”, which they made by pounding flat the woven stems of the papyrus plant. It was not long before the ancient Egyptians began gluing together papyrus sheets to form scrolls, which were the first steps toward books as you know. The birthplace of bookbinding is considered to be India in the 2nd century B.C., where Hindi scribes would bind palm leaves that were etched with religious texts between two wooden boards using twine. The technique became popular in the Middle East and Eastern Asia, and spread to the Romans by the 2nd century A.D. In the mid-15th century, German Johannes Gutenberg invented the first mechanical printing press. His invention was revolutionary because it enabled mass production of booksfor the first time. Before the printing press, a few pages per day could be produced by handcopying. Afterward, printing presses could produce as many as 3,600 pages per day. Today, modern publishers take advantage of incredible advances in technology to produce books in many sizes and shapes very quickly. Although there are many types of processes and machines available, most processes involve similar steps. Printers print the text of a book on large sheets of paper, sometimes as large as a newspaper page. Working with large volumes of paper allows printers to lower costs and produce books more efficiently.The large sheets are then cut into smaller pages that are still about twice the size of a finished book. The smaller pages are then divided into small groups, folded in half, and sewn together. Lastly, the folded and sewn pages are cut down to their finished size and glued to the spine of the final book’s cover. Depending on the quality of the book, additional finishing touches may be added, such as blank pages at the front and back of the book or special tape around the edges of the cover to increase durability. Although printed books may never go away completely, today’s readers will most certainly soon become more familiar with e-books. “E-book” refers to an electronic book, which is simply the text of a book displayed electronically, either via the Internet, a CD-ROM, a tablet, an e-book reader, or even a mobile phone. As electronic devices, such as tablets and mobile phones, become more commonplace, e-books are expected to become more and more popular. One of the benefits of e-books is that they save paper, which helps the environment by reducing the demand for trees  
5. According to paragraph 4, how to produce books more cheaply and efficiently?

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While fats have lately acquired a bad image, one should not forget how essential they are. Fats provide the body's best means of storing energy, far more effiient energy sources than either carbohydrates or protein. They act as insulation against cold as cushioning for the internal organs, and as lubricants. Without fats, energy would be no way to utilize fat soluble vitamins. Furthermore, some fats contain fatty acids that contain necessary growth factors and help with the digestion of other foods. An important consideration of fat intake is the ratio of saturated fats to unsaturated fats. Saturated fats, which are derived from dairy products, animal fats, and tropical oils, increase the amount of cholesterol in the blood. Cholesterol may lead to coronary heart disease by building up in the arteries of the heart. However, unsaturated fats, derived from vegetable oils, tend to lower serum cholesterol if taken in proportion twice that of saturated fats. The consumption of a variety of fats is necessary, but the intake of too much fat may lead to a variety of health problems. Excessive intake of fats, like all nutritional excesses, is to be avoided.
2. What is the main idea of the second paragraph?

Read the following passage and choose the best answer (A, B, C, D):
Lead researcher on the atlas, Dr Zoë Randle, said the northerly migration of species of moths and butterflies is a phenomenon observed in northern Europe in recent decades. She said moths are proof that human-made climate change is happening now. Great Britain has observed the arrival of new species too, such as the Clifden Nonpareil, Tree-lichen Beauty and Black-spotted Chestnut. The atlas records that 38 per cent of all moth species in Britain and Ireland have spread to other areas in the last 50 years, most as a result of global warming. The book lists 893 species in all and the scientists’ analysis of distribution records over the period 1970-2016 in particular showed that 31 per cent of 390 larger moth species decreased significantly in Britain. Intensive agriculture has caused the decline of many moth species through the destruction of wildlife-rich habitats and use of fertilizers and pesticides. Widespread environmental pollution such as artificial light at night and chemicals in the air and soil, are altering plant and animal communities in ways that are still not fully understood. Humanmade climate change has facilitated the spread of moths to new parts of Britain and Ireland that were formerly too cold, while at the same time posing a long-term risk to species found in cool and restricted habitats such as mountainsides. The atlas is based on more than 25 million records sourced from Butterfly Conservation’s National Moth Recording Scheme and the Moths Ireland database. These date from the 18th century through to 2016, meaning this volume contains 275 years of mothrecording effort by the public. Dr Randle said the same system of comprehensive recording is not yet available in Ireland as it is in Britain, but anecdotally she believes the same patterns are emerging in Ireland.  
2. According to paragraph 1, the following statements are true about the migration of moths, EXCEPT _______

Read the following passage and choose the best answer (A, B, C, D)
Scientist and inventor George Washington Carver was born into slavery during the American Civil War. After the war, he worked diligently to get an education. He managed to get an advanced degree in Botany, which is the study of plants. After he finished his college degree, he worked in the South. He taught people about botany and about how it could be used to improve farming. Carver learned that there was a problem with cotton farming in the South. Cotton takes nutrients from the soil. If cotton is planted year after year, the quality of the soil decreases. Carver knew that plants like peanuts and sweet potatoes are different from cotton. They add nutrients to the soil rather than take nutrients from the soil. Carver told farmers that it was a bad idea to grow only cotton and no other crops each year. He told them that they should also grow plants like peanuts and sweet potatoes, which improve the quality of the  soil. Many farmers followed the advice that Carver offered them. The result was that the production on their farms increased. This increased production of peanuts and sweet potatoes improved the quality of the soil. However, when production of peanuts and sweet potatoes increased, a new problem developed. The new problem was that there were too much peanuts and sweet potatoes. To solve this problem, Carver began working in a laboratory to find new uses for peanuts and sweet potatoes. He developed hundreds of products that could be made from peanuts and sweet potatoes. These hundreds of products included food products, medicines, plastics and fertilizer  
5. According to paragraph 3, what problem developed from the production of peanuts and sweet potatoes?

Read the following passage and choose the best answer (A, B, C, D):
Traditional Thai cuisine falls into different categories: boiled dishes, salads, pounds foods and curries. Whether at home or in a restaurant. Thai meals are always (1)________ ‘family style’ – that is, from common serving platters, with the plates appearing in whatever order the kitchen can prepare them. When serving yourself from a common platter, put no more than one spoonful (2) _______ your plate at a time. Heaping your pate with all ‘your’ portions at once will look greedy to Thais unfamiliar with Western conventions. Another important factor in a Thai meal is (3) _______ a balance of flavours and textures. Traditionally the party orders a curry, a steamed or fried fish, a stir-fried vegetable dish and a soup, taking great care to (4) _____ cool and hot, sour and sweet, salty and plain. Thai food was originally eaten with the fingers, and it still is in certain regions. These days, though, fork-and-spoon dining is the norm. To use these tools the Thai way, use a serving spoon, or alternatively your own, to take a (5) ________ mouthful of food from a central dish and ladle it over a portion of your rice. The fork is then used to push the nowfood-soaked portion of rice back onto the spoon before entering the mouth

Fill in each numbered blank with one suitable word or phrase.

Researchers in communication show that more feelings and intentions are (1) _______ and received nonverbally than verbally. Mehrabian and Wienerfollowing have stated that only 7% (2) _______ message is sent through words, with remaining 93% sent nonverbal (3) _______.

Humans use nonverbal communication because:

1. Words have limitations: There are (4) _______ areas where nonverbal communication is more (5) _______ than verbal, especially when we explain the shape, directions, personalities which are expressed nonverbally.

2. Nonverbal signal are powerful: Nonverbal cues primarily express inner (6) _______ while verbal messages deal basically with outside world.

3. Nonverbal message are likely (7) _______ more genuine: because nonverbal behaviors cannot be controlled as easily as spoken words.

4. Nonverbal signals can express feelings inappropriate to state: Social etiquette limits (8) _______ can be said, but nonverbal cues can communicate thoughts.

5. A separate communication channel is necessary to (9) _______ send complex messages: A speaker can add enormously to the complexity of the verbal message through simple nonverbal (10) _______

(5) _______

Choose the best answer:
Which ____________ is the documentary on?

Find mistake:
I'd love come and see them on Sunday, provided that I don't have to work that day.

Read the following passage and choose the best answer (A, B, C, D):
A new report by the Pew Research Center has provided more documentation on the growing popularity of audiobooks. In a survey of 1,502 American adults conducted from January 8 to February 7 this year, Pew found that 20% of adults listened to an audiobook in the 12 months prior to the period in which the survey was conducted. In 2011, only 11% of them said they listened to an audiobook. The strongest gains have come since 2016—the dawning of the digital audiobooks age. The percentage of adults listening to audiobooks rose six percentage points between 2016 and the 2019 survey, after rising only three percentage points between 2011 and 2016. According to Pew, since 2018, college students and adults with household incomes over $75,000 are the two groups who have adopted listening to audiobooks the quickest. The Pew survey also found that while listening to audiobooks has risen steadily since the 2016 survey, reading e-books had declined. Twenty-eight percent of adults reported reading an e-book in 2016—double the number who listen to audiobooks that year. By the most recent survey, ebooks had only a 5% edge over audiobook usage. Overall, the Pew survey found a gradual reduction in the percentage of Americans who are reading. In 2011, 79% of those surveyed said they had read a book in the previous 12 months, a number that fell to 72% in early 2019. Print remained by far the book format of choice, with 65% or adults surveyed reporting that had read a print book within the last year, down from 71% in 2011. The percentage of adult who read a book in any format fell from 79% in 2011 to 72% in 2019.  
5. According to paragraph 4, what is the general trend of people’s reading behaviours?

Biofuels and the Environment

Leading investors have joined the growing chorus of concern about governments and companies rushing into producing biofuels as a solution for global warming, saying that many involved in the sector could be jeopardizing future profits if they do not consider the long-term impact of what they are doing carefully.

It is essential to build sustainability criteria into the supply chain of any green fuel project in order to ensure that there is no adverse effect on the surrounding environment and social structures. The report produced by the investors expresses concern that many companies may not be fully aware of the potential pitfalls in the biofuel sector.

Production of corn and soya beans has increased dramatically in the last years as an eco-friendly alternative to fossil fuels but environmental and human rights campaigners are worried that this will lead to destruction of rain forests. Food prices could also go up as there is increased competition for crops as both foodstuffs and sources of fuel. Last week, the UN warned that biofuels could have dangerous side effects and said that steps need to be taken to make sure that land converted to grow biofuels does not damage the environment or cause civil unrest. There is already great concern about palm oil, which is used in many foods in addition to being an important biofuel, as rain forests are being cleared in some countries and people driven from their homes to create palm oil plantations.

An analyst and author of the investors' report say that biofuels are not a cure for climate change but they can play their part as long as governments and companies manage the social and environmental impacts thoroughly. There should also be greater measures taken to increase efficiency and to reduce demand.

____ are worried about the boom in biofuels.