Read the following passage and choose the best answer (A, B, C, D):
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 temperatures are colder. 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 in water 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
4. Why does the author mention “the stove” in the first paragraph?

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She has won a running competition . ---- _______________!

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You like history, so Viet Nam National Museum of History is a _____ place.

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The majority of Americans can live comfortable lives on the salaries they earn, without the support of a universal public-welfare system. These so-called middle-class Americans generally own their own homes and cars, spend some time each year on vacation, and can pay – at least in part - for a college education for their children. Most Americans set (1) _______ money in savings accounts to help pay major expenses; many invest in the stock market in hopes of earning a healthy return on their investments.  Most buy insurance, especially life and medical insurance, frequently with contributions (2) _____ the companies for which they work. Many companies also have retirement plans which they and their employees put aside money for their retirement pensions. When added to Social Security payments, pensions (3) _______ many tired Americans to live comfortably. On the other hand, for older Americans who require longterm care outside of a hospital, a nursing home can be very expensive. In 1993, a family of four with a yearly income of $14,763 or less was considered poor by American standards; 15.1 percent of American families fell into this category. In addition to the benefits discussed above, many families below the (4) ________line receive welfare payments, sums of money provided by the government each month to those whose income is too low to obtain such necessities as food, clothing and shelter. The most common form of welfare payment has been through a program called Aid to Families With Dependent Children (AFDC). Originally (5) _______to help children whose fathers had died, AFDC evolved into the main source of regular income for millions of poor American families

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Egypt’s 100 millionth citizen was born last week, undoubtedly a happy occasion for one family, but a moment filled with foreboding for a country struggling to contain a population explosion. In the past year the government has scrambled to stem the birth rate with a new program called “Two is Enough.” It is establishing family planning clinics throughout the country, where Egyptians can purchase heavily subsidized contraceptives. But many doctors and activists fear that this is too little, and comes too late to reverse the uptick in population growth. Doctors complain that the new “Two is Enough” program lacks in a clear strategy to bring down birthrates. The financial resources deployed thus far have been a fraction of previous efforts; some family-planning clinics have reportedly run out of contraceptives. While clinics funded by the campaign to provide some reproductive health education, sexual education remains taboo in Egyptian schools. There is also a lack of adequate services for the poor and pensioners. Many Egyptians opt to have more children in the hope they will look after them as they age, a phenomenon common in countries with high levels of poverty and inadequate safety nets. While over 30 million Egyptians live in poverty, only 9.4 million receive means-tested cash transfers from the government’s welfare programs. Economic reforms undertaken as part of a recently completed International Monetary Fund program have cut subsidies in a number of areas, contributing a spike in inflation that at one point exceeded 30%. For newborns like the 100-millionth Egyptian, the outlook is grim. A burgeoning population exacerbates many problems. Despite Egypt’s limited supply - it depends almost exclusively on the Nile - there has been a systemic failure to adequately address water waste. From wasteful megaprojects draining the Nile to literally dumping waste in the river, Egyptian officials have consistently failed to prudently protect what is perhaps the country’s most vital natural resource. In 2018, Egypt temporarily reduced the farming of rice, a water intensive crop - only to expand cultivation the following year. The New Administrative Capital that Sisi has set out to erect is projected to need 650,000 cubic meters of water per day when finished. Failure to quickly and dramatically improve water management practices in Egypt could be disastrous, and the risk is the greater for the country’s rapid population growth  
2. The word “foreboding” in paragraph 1 is closest in meaning to _______

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Herman Melville, an American author best known today for his novel Moby Dick, was actually more popular during his lifetime for some of his other works. He traveled extensively and used the knowledge gained during his travels as the basis for his early novels. In 1837, at the age of eighteen, Melville signed as a cabin boy on a merchant ship that was to sail from his Massachusetts home to Liverpool, England. His experiences on this trip served as a basis for the novel Redburn (1849). In 1841, Melville set out on a whaling ship headed for the South Seas. After jumping ship in Tahiti, he wandered around the islands of Tahiti and Moorea.This South Sea island sojourn was a backdrop to the novel Omoo (1847). After three years awayfrom home, Melville joined up with a U.S. naval frigate that was returning to the eastern United States around Cape Horn. The novel White Jacket (1850) describes this lengthy voyage as a navy seaman. With the publication of these early adventure novels, Melville developed a strong and loyal following among readers eager for his tales of exotic places and situations. However, in 1851, with the publication of Moby Dick, Melville's popularity started to diminish. Moby Dick, on one level the saga of the hunt for the great white whale, was also a heavily symbolic allegory of the heroic struggle of humanity against the universe. The public was not ready for Melville's literary metamorphosis from romantic adventure to philosophical symbolism. It is ironic that the novel that served to diminish Melville's popularity during his lifetime is the one for which he is best known today.
7. How did the publication of Moby Dick affect Melville's popularity?

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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

Read the following passage and choose the best answer (A, B, C, D):
Living things include both the visible world of animals and plants as well as the invisible world of (1) __________ and viruses. On a basic level, we can say that life is ordered. Organisms have an enormously complex organization. Life can also “work”. Living creatures can take in energy from the environment. This energy, in the form of food, is changed to maintain (2) __________ processes and for survival. Life grows and develops. This means more than just getting larger in size. Living organisms also have the ability to rebuild and repair themselves when injured. Life can reproduce. Life can only come from other living creatures. Life can respond. Think about the last time you accidentally stubbed your toe. (3 )____________ instantly, you moved back in pain. Finally, life can adapt and respond to the demands placed on it by the environment. There are three basic types of adaptations that can occur in higher organisms. Reversible changes occur as a response to changes in the environment. Let’s say you live near sea level and you travel to a mountainous area. You may begin to experience difficulty breathing and an increase in heart rate (4) __________ the change in height. These signs of sickness go away when you go back down to sea level. Body- related changes happen as a result of (5) ___________ changes in the environment. Using the previous example, if you were to stay in the mountainous area for a long time, you would notice that your heart rate would begin to slow down and you would begin to breath normally. These changes are also reversible

Read the following passage and choose the best answer (A, B, C, D):
Marriage is an ancient religious and legal practice celebrated around the world. However, wedding customs vary from country to country. The Wedding Dress: In many countries, it is customary for the bride to wear a white dress as a symbol of purity. The tradition of wearing a special white dress only for the wedding ceremony started around 150 years ago. Before that, most women could not afford to buy a dress that they would only wear once. Now, bridal dresses can be bought in a variety of styles. In some Asian countries and in the Middle East, colors of joy and happiness like red or orange other than white are worn by the bride or used as part of the wedding ceremony. The Wedding Rings: In many cultures, couples exchange rings, usually made of gold or silver and worn on the third finger of the left or right hand, during the marriage ceremony. The circular shape of the ring is symbolic of the couple’s eternal union. In Brazil, it is traditional to have the rings engraved with the bride’s name on the groom’s ring, an vice versa. Flowers: Flowers play an important role in most weddings. Roses are said to be the flowers of love, and because they usually bloom in June, this has become the most popular month for weddings in many countries. After the wedding ceremony, in many countries the bride throws her bouquet into a crowd of well-wishers – usually her single female friends. The person who catches this bouquet will be the next one to marry. Gifts: In Chinese cultures, wedding guests give gifts of money to the newly-weds in small red envelopes. Money is also an appropriate gift at Korean and Japanese wedding. In many Western countries, for example in the U.K, wedding guests give the bride and groom household items that they may need for their new home. In Russia, rather than receiving gifts, the bride and groom provide gifts to their guests instead. With the continued internationalization of the modern world, wedding customs that originated in one part of the world are crossing national boundaries and have been incorporated into marriage ceremonies in other countries. 
1. Which of the following is the best title of the passage?

Read the passage carefully, then choose the correct answers.

The dramatic growth of the world's population in the twentieth century was on a scale without parallel in human history. Most of this growth had occurred since 1950 and was known as the population 'explosion'. Between 1950 and 1980 the world population increased from 2.5 to over 4 billion, and by the end of the twenty century the figure had risen to about 6.6 billion. Growth of this size cannot continue indefinitely. Recent forecasts suggest that the total population will level out at between 10 and 15 billion in the mid twenty first century. Already there are encouraging signs that the rate of increase in many less developed countries is beginning to slow down.

According to the passage, at no period in human history has there been ______.

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:
We have all had bad experiences with restaurants, stores, or hotels. Maybe you have gone to a restaurant that served terrible food. Perhaps you have gone to a store that had high prices or bad service. Or maybe you have booked a hotel and found out later that the room was nothing like the advertisement.
These days, we have a better chance of preventing these unpleasant surprises. We can do this by using apps. “App” is short for “application”. An app is a computer programme on a smartphone. You can use apps to do almost anything. Apps can help you play games, get directions, talk to friends, and so on.
If f you want to find information about a store or a hotel, you can use a review app. Review apps help us evaluate services and products before we hand over our money. The idea is very simple. After you go to a restaurant or stay in a hotel, you can post a review with one of your apps. You can say anything you want. If you like a hotel you stayed in, you can tell people that it was wonderful. If you think that the food in a certain restaurant was bad, then you tell people not to eat there. Other people can use their apps to read your reviews.
Plenty of people prefer not to use these review apps. Many of these people prefer to go out and decide for themselves whether or not a service is good. However, review apps are getting more and more popular every day. Some apps are for specific services. For example, Tripadvisor focuses on travel, and Goodreads focuses on books. There are also other, larger apps that provide information for just about every service that you can think of. 5

If you want to book a hotel, how can a review app help you?

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Green-space facilities are contributing to an important extent to the quality of the urban environment. Fortunately it is no longer necessary that every lecture or every book about this subject has to start with the proof of this idea. At present, it is generally accepted, although more as a self-evident statement than on the base of a closely-reasoned scientific proof. The recognition of the importance of green-spaces in the urban environment is a first step on the right way; this does not mean, however, that sufficient details are known about the functions of green-space in towns and about the way in which the inhabitants are using these spaces. As to this rather complex subject I shall, within the scope of this lecture, enter into one aspect only, namely the recreative function of green-space facilities. The theoretical separation of living, working, traffic and recreation which for many years has been used in town-and-country planning, has in my opinion resulted in disproportionate attention for forms of recreation far from home, whereas there was relatively little attention for improvement of recreative possibilities in the direct neighbourhood of the home. We have come to the conclusion that this is not right, because an important part of the time which we do not pass in sleeping or working, is used for activities as possible, and the design of these has to be such that more obligatory activities can also have a recreative aspect. The very best standard of living is nothing if it is not possible to take a pleasant walk in the district, if the children cannot be allowed to play in the streets, because the risks of traffic are too great, if during shopping you can nowhere find a spot for enjoying for a moment the nice weather, in short, if you only feel yourself at home after the street-door of you house is closed after you.  
2. The underlined word “which” in the passage refers to ________

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People who do not smoke, are not obese, and consume alcohol moderately can expect to live seven years longer than the general population, and to spend most of these extra years in good health, according to a new study published today in Health Affairs. This study was the first to analyze the cumulative impact of several key health behaviours on disability-free and total life expectancy. Previous studies have looked at single health behaviours. Mikko Myrskylä and his colleague instead examined several behaviors simultaneously, which allowed them to determine how long and healthy the lives of people who had avoided most of the well-known individual behavioral risk factors were. The researchers noted that each of the three unhealthy behaviours – obesity, smoking, and unhealthy consumption of alcohol – was linked to a reduction in life expectancy and to an earlier occurrence of disabilities. But there were also differences: smoking was found to be associated with an early death but not with an increase in the number of years with disability, whereas obesity was shown to be associated with a long period of time with disability. Excessive alcohol consumption was found to be associated with both decreased lifespan and a reduced number of healthy years. However, the absence of all of these risky healthy behaviors was found to be associated with the greatest number of healthy years. The most striking finding was the discovery of a large difference in average lifespan between the groups who were the most and the least at risk. Men who were not overweight, had never smoked, and drank moderately were found to live an average of 11 years longer than men who were overweight, had smoked, and drank excessively. For women, the gap between these two groups was found to be even greater, at 12 years. “Our results show how important it is to focus on prevention. Those who avoid risky health behaviours are achieving very long and healthy lives. Effective policy interventions targeting health behaviors could help larger fractions of the population to achieve the health benefits observed in this study,” the researcher emphasized. These results are important not only for individuals, but also for society. In an aging society, the health of the elderly determines the amount of money spent on the health system. In addition, healthy elderly people are better able to participate in the labor market and to perform social roles, such as caring for grandchildren.  
2. The word “cumulative” 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 from 36 to 42.

It is estimated that by 2050 more than two-thirds of the world's population will live in cities, up from about 54 percent today. While the many benefits of organized and efficient cities are well understood, we need to recognize that this rapid, often unplanned urbanization brings risks of profound social instability, risks to critical infrastructure, potential water crises and the potential for devastating spread of disease. These risks can only be further exacerbated as this unprecedented transition from rural to urban areas continues.
 How effectively these risks can be addressed will increasingly be determined by how well cities are governed. The increased concentration of people, physical assets, infrastructure and economic activities mean that the risks materializing at the city level will have far greater potential to disrupt society than ever before.
 Urbanization is by no means bad by itself. It brings important benefits for economic, cultural and societal development. Well managed cities are both efficient and effective, enabling economies of scale and network effects while reducing the impact on the climate of transportation. As such, an urban model can make economic activity more environmentally-friendly. Further, the proximity and diversity of people can spark innovation and create employment as exchanging ideas breeds new ideas.
 But these utopian concepts are threatened by some of the factors driving rapid urbanization. For example, one of the main factors is rural-urban migration, driven by the prospect of greater employment opportunities and the hope of a better life in cities. But rapidly increasing population density can create severe problems, especially if planning efforts are not sufficient to cope with the influx of new inhabitants. The result may, in extreme cases, be widespread poverty. Estimates suggest that 40% of the world's urban expansion is taking place in slums, exacerbating socio-economic disparities and creating unsanitary conditions that facilitate the spread of disease.
 The Global Risks 2015 Report looks at four areas that face particularly daunting challenges in the face of rapid and unplanned urbanization: infrastructure, health, climate change, and social instability. In each of these areas we find new risks that can best be managed or, in some cases, transferred through the mechanism of insurance.

Which is the most suitable title for the passage? 

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Until the twentieth century cigarettes were not an important threat to public health. Men used tobacco mainly in the form of cigars. They chewed tobacco, piped tobacco, and snuffed. Most women did not use tobacco at all. The cigarette industry began in 1870s with the development of the cigarette manufacturing machine. This made it possible to produce great numbers of cigarettes very quickly, and it reduced the price. Today cigarette smoking is a widespread habit. About forty-three percent of the adult men and thirty-one percent of the adult women in the United States smoke cigarettes regularly. It is encouraging to note, however, that millions of people have quits smoking. Seventy-five percent of the male population and forty-six percent of the female population have smoked cigarettes for some time during their lives, but twenty-six percent of these men and eleven percent of women have stopped smoking. The number of persons who have given up smoking is increasing. Men as a group smoke more than women. Among both men and women the age group with the highest proportion of smokers is the age group 24-44. Income, education, and occupation all play a part in determining a person’s smoking habit. City people smoke more than people living on farms. Well-educated men with high incomes are less likely to smoke cigarettes than men with fewer years of schooling and lower incomes. On the other hand, if a well-educated man with a higher income smokes, he’s likely to smoke more packs of cigarettes per day. The situation is somewhat different for women. There are slightly more smokers among women with higher family incomes and higher education than among the lower income and lower educational groups. These more highly educated women tend to smoke more heavily. Among teenagers the picture is similar. There are fewer teenager smokers from upper-income, well-educated families, and also fewer from families living in farm areas. High school students who are preparing for college are less likely to smoke than those who don’t plan to continue their education after high school. Children are most likely to start smoking if one or both of their parents smoke  
4. The phrase “On the other hand” is used in the passage _____________

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The year was 1810, the place was southern Germany, Bavaria, and life was hard. It was the month of October and all of the countryside had been working day and night to finish their fall harvest and prepare for the onset of winter. While the plow horses were working and the farmers’ days were filled from sun up to sun down, there were some other preparations being made as well. Prince Ludwig I and his entire court were preparing for his upcoming marriage to Princess Therese of Sachsen-Hildurghausen. The grand wedding was to take place on the 12th, right in the middle of the harvest. As you know any wedding can be difficult to plan, but when you’re a prince it can be even more stressful. The invitations had gone out, the garments had been made and the location had been selected. The big event was to be held in a magnificent “Weise” (meadow) just outside the gates of Munich. As the big day approached, the countryside and town, in fact all of Bavaria was a buzz with talk of the big day. Everyone was planning on attending as they were all exhausted from the harvest and it was really the last chance before the long, cold days of winter to get out and blow off some steam. On the 12th, the ceremony went off without a hitch. The weather was perfect, the bride looked beautiful and about 40,000 guests were in attendance. The reception, as you can imagine, was one of the biggest parties history had ever seen with copious amounts of beer and massive quantities of food being devoured. It was a reception fit for a prince. And this prince was absolutely ecstatic. Ludwig I was so taken with all of his guests that he planned a special treat for them. The prince knew that all of his subjects were huge fans of horseracing so he planned to conclude the event with a somewhat impromptu horse race across the great meadow. When the townspeople heard of this they erupted in a jubilant cry Zicke Zacka, Zicke Zacka, Hoy, Hoy, Hoy. This is still chanted in the beer tents of today’s Oktoberfest celebrations. It was then and there that they decided unanimously to rename the wiese Theresiewiese (Therese Meadow) in honor of the Prince’s new bride. This was their humble way of welcoming her to town. To this day that very meadow still bears her name. After a spectacular day and night — and probably more than a couple of hangovers — the great event came to an end. It was the following fall as the townspeople began to reminisce about the great time they had had the previous year (as do many of our Oktoberfest guests tend to do around the fall) that they decided to honor their prince and celebrate his wedding anniversary in much the same way. King Maximillian agreed, but this party was to be even bigger, better and longer than the first. The event became an annual celebration. And that my friends is how the Oktoberfest tradition began and continues today. As a side note, the beer that was poured all those years ago and that has been continually served at every Oktoberfest in Munich since will now be served at the Big Bear Lake Oktoberfest. The very same beer flowing from the taps in Munich, Germany will be the beer flowing from our taps in humble Big Bear Lake. And like the beer, our Burgermeister just happens to be a true German original as well. 
6. What does the word “This” in paragraph 4 refer to?

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Human beings are plagued by all kinds of diseases and millions of people die from them. Many of these diseases such as diabetes, polio, whooping cough and diphtheria can be fatal and in the past, people used to die from them. However, with modern technology and a lot of research, scientists and doctors have come up with various ways to cure these diseases, and consequently, many lives are saved. In doing the medical research, doctors have come face to face with many problems. One such problem is the opposition that comes from animal activists. They are against the inhuman treatment of animals. They argue that in conducting their medical research, doctors put animals through a very painful process and this should be stopped. According to the fiercest animal activists, nothing justifies the use of animals in medical experiments, even if lives might be saved. To get their message across, animal activists are even willing to resort to the use of violence. Many animal protection groups, like the Animal Liberation Front (ALF), have broken into laboratories illegally to ‘rescue’ animals. They take away whatever animals they can find and free them. These people also make their case by threatening the researchers. They vandalize medical equipment, and in the most serious cases, they even . In stealing the animals, the activists are actually hindering the progress of medicine. In many cases, the animals were part of research for the cure for various diseases and visual defects in babies. Cures for problems that people face, therefore, come slower and in the waiting period, more people die. Researchers have come up with many cures in the process of working with animals and on animals. Organ transplants are so common today, but we forget that they became only  possible after they were tested on animals. Doctors were able to come up with a cure for river blindness, a disease that affects millions of people in South America and Africa. These are only a few examples, and there are many more. In spite of what animal activists think, most researchers do not treat animals cruelly. In fact, mistreated animals which are in agony will affect the quality of research so that results obtained are not really reliable. Thus, researchers do try to treat animals as well as possible. In the long run, animal activists can cause serious damage to the future of medicine. With their persistent campaigning, much of the public supports their cause. People with AIDS or cancer need doctors to do research to save their lives, and often it is a case where animal research is crucial before any cure can be found  
5. Which of the following might NOT be the purpose of doing medical researches?

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

An extend family consists not only of parents and children but also of other relatives, such as grandparents and unmarried aunts and uncles

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The past fifty years or so have seen the gradual disappearing of animals from this earth, fishes from the sea, trees and plants from the land. Many factors result in this unpleasant phenomenon. Among them, hunting is the main factor that endangers wildlife. Some people kill wildlife for sport. They take pleasure in collecting heads and hides. Yet others specialize in commercial hunting like killing whales. Apart from this, the rapidly growing human population threatens wildlife on land, too. Towns expand and roads have to be built, so forests are burnt and trees are chopped down. It seems that man needs every inch of land within his reach, so he moves on to the natural habitat of wildlife. Tigers, lions and leopards slowly die off without the food and shelter that the forests provide. In addition, rapid urbanization means industrial expansion. Very often, poisonous chemicals, industrial wastes and oil are dumped into the rivers and seas. Fish and birds are threatened. Man depends greatly on animals for survival. He needs their flesh, hides and furs. Thus, man cannot do without wildlife; or he himself would become extinct. The public should be made aware that it would be better to shoot the animals with a camera than with a gun. In this way, they can preserve and help wildlife to continue living rather than to remove all signs of it. Man must learn to farm the sea as he does the land. He should regulate the amount and the frequency of his catch. He should allow fish to breed and multiply before netting them. Man also needs to build forest reserves, and to pass laws prohibiting the killing of animals, especially those that are already rare. To retain the present animal kingdom, the least that man can do is to clean the seas and rivers and to prevent pollution. The cycle of nature is such that it forms a vicious circle. The insecticides and pesticides that we spray on crops can kill the birds and animals that feed on them. When man eats these poisoned animals, he himself can die. We must therefore test the chemicals to be used before they are sprayed or it might mean the death of man!
2. According to the passage, what has happened to the wildlife in the past fifty years or so?

Read the following passage and choose the best answer (A, B, C, D):
Long life expectancy can be attributed to a person’s diet - a healthy, balanced diet has been proven to improve longevity. Experts recommend eating at least five portions of a variety of fruit and vegetables every day, basing meals on higher starchy foods like potatoes, bread and rice, having some dairy or dairy alternatives, eating some protein, choosing unsaturated oils and spreads, and drinking plenty of fluids. But new research, published this week, has found the times of day a person eats holds the most benefits. Dr Mark Mattson, a professor of neuroscience at John Hopkins University School of Medicine, in the US, has said “intermittent fasting could be part of a healthy lifestyle.” Intermittent fasting diets usually involve daily time-restricted feeding, which narrows eating times to six to eight hours per day and so-called 5:2 intermittent fasting, in which people limit themselves to one moderate-sized meal two days each week. A range of human and animal studies have shown that alternating between times of fasting and eating supports cellular health, probably by triggering an age-old adaptation to periods of food scarcity called metabolic switching. Such a switch occurs when cells use up their stores of rapidly accessible, sugar-based fuel, and begin converting fat into energy in a slower metabolic process. Dr Mattson says studies have shown that this switch improves blood sugar regulation, increases resistance to stress and suppresses inflammation. Because most Americans eat three meals plus snacks each day, they do not experience the switch, or the suggested benefits. In an article in the New England Journal of Medicine, Dr Mattson said four studies in both animals and people found intermittent fasting also decreased blood pressure, blood lipid levels and resting heart rates.  
3. According to paragraph 2, what does intermittent fasting involve?

Read the following passage and choose the best answer (A, B, C, D):
People have five senses. We have a sense of sight, hearing, smell, touch, and taste. Believe (1) _______ , your sense of smell is very important. Our nose tells us about our environment. When your nose smells something, it sends information to our brain. Smells tell us if there is danger nearby, or if there is something to eat. Of course, these tools were more useful in the past, but they still come (2) _______ today. The things you smell can affect your (3) _______ If you smell something nice, you are more likely to be happy. On the other hand, if you smell something unpleasant, you are more likely to be unhappy. That is (4) _______ there are so many businesses that work to create nice scents. Businesses also work on the best ways to deliver scents to people’s noses. Candles (5) _______. a whole room smell better. Oils and soaps also have health benefits.