Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop.
Uncompromising as it is, the desert has not eliminated life but only those forms unable to withstand its desiccating effects. No moist- skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated.
Having adapted to their austere environment, they are as healthy as animals anywhere else in the word. The secret of their adjustment lies in the combination of behavior and physiology. None could survive if, like mad dogs and Englishmen, they went out in the midday sun; many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun- baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.

The phrase “those forms” in the passage refers to all of the following EXCEPT

 

Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction. 
Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth. 
The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.

According to the passage, the highest amount of pheromone vapor is found

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: 
The growth of cities, the construction of hundreds of new factories, and the spread of railroads in the United Stases before 1850 had increased the need for better illumination. But the lighting in  American homes had improved very little over that of ancient times. Through the colonial period,  homes were lit with tallow candles or with a lamp of the kind used in ancient Rome- a dish of fish oil or  other animal or vegetable oil in which a twisted rag served as a wick. Some people used lard, but they  had to heat charcoal underneath to keep it soft and burnable. The sperm whale provided superior  burning oil, but this was expensive. In 1830 a new substance called "camphene" was patented, and  it proved to be an remained expensive, had an unpleasant odor, and also was dangerously explosive.
Between 1830 and 1850 it seemed that the only hope for cheaper illumination in the United  States was the wider use of gas. In the 1840s American gas manufacturers adopted improved British  techniques for producing illuminating gas from coal. But the expense of piping gas to the consumer  remained so high that until mid- century gas lighting was feasible only in urban areas, and only for  public buildings for the wealthy. In 1854 a Canadian doctor, Abraham Gesner, patented a process for  distilling a pitch like mineral found in New Brunswick and Nova Scotia that produced illuminating  gas and an oil that he called "kerosene" (from "keros", the Greek word for wax, and "ene" because  it resembled camphene). Kerosene, though cheaper than camphene, had an unpleasant odor, and  Gesner never made his fortune from it. But Gesner had aroused a new hope for making illuminating oil from a product coming out of North American mines.

The word "it" in line 18 refers to________.

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 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 the 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 unmanipulated, 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, for at its best the realistic cinema specializes in art that conceals art

Which of the following films would most likely use a realist style?

A pioneering study by Donald Appleyard made the astounding discovery that a sudden increase in the volume of traffic through an area affects people in the way that a sudden increase in crime does. Appleyard observed this by finding three blocks of houses in San Francisco that looked much alike and had the same kind of middle-class and working-class residents, with approximately the same ethnic mix. The difference was that only 2,000 cars a day ran down Octavia Street (LIGHT street, in Appleyard’s terminology) while Gough Street (MEDIUM street) was used by 8,000 cars daily, and Franklin Street (HEAVY street) had around 16,000 cars a day. Franklin Street often had as many cars in an hour as Octavia had in a day.
Heavy traffic brought with it danger, noise, fumes and soot, directly, and trash secondarily. That is, the cars didn’t bring in much trash, but when trash accumulated, residents seldom picked it up. The cars, Appleyard determined, reduced the amount of territory residents felt responsible for. Noise was a constant intrusion into their homes. Many Franklin Street residents covered their doors and windows and spent most of their time in the rear of their houses. Most families with children had already left.
Conditions on Octavia Street were much different. Residents picked up trash. They sat on their front steps and chatted with neighbors. They had three times as many friends and twice as many acquaintances as the people on Franklin.
On Gough Street, residents said that the old feeling of community was disappearing as traffic increaseD. People were becoming more and more preoccupied with their own lives. A number of families had recently moved and more were considering. Those who were staying expressed deep regret at the destruction of their community.

What is the writer’s attitude toward heavy traffic when he mentions the Appleyard’s study?

Read‌ ‌the‌ ‌following‌ ‌passage‌ ‌and‌ ‌mark‌ ‌the‌ ‌letter‌ ‌A,‌ ‌B,‌ ‌C,‌ ‌or‌ ‌D‌ ‌on‌ ‌your‌ ‌answer‌ ‌sheet‌ ‌to‌ ‌indicate‌ ‌the‌ ‌correct‌ ‌word‌ ‌or‌ ‌phrase‌ ‌that‌ ‌best‌ ‌fits‌ ‌each‌ ‌of‌ ‌the‌ ‌numbered‌ ‌blanks‌ ‌from‌ ‌16‌ ‌to‌ ‌20.‌ ‌
Dressing‌ ‌up‌ ‌in‌ ‌costumes‌ ‌and‌ ‌trick-or-treating‌ ‌are‌ ‌popular‌ ‌Halloween‌ ‌activities,‌ ‌but‌ ‌few‌ ‌probably‌ ‌(‌16‌)‌ ‌______‌ ‌these‌ ‌lighthearted‌ ‌fall‌ ‌traditions‌ ‌with‌ ‌their‌ ‌origins‌ ‌in‌ ‌Samhain,‌ ‌a‌ ‌three-day‌ ‌ancient‌ ‌Celtic‌ ‌pagan‌ ‌festival.‌ ‌
For‌ ‌the‌ ‌Celts,‌ ‌who‌ ‌lived‌ ‌during‌ ‌the‌ ‌Iron‌ ‌Age‌ ‌in‌ ‌what‌ ‌is‌ ‌now‌ ‌Ireland,‌ ‌Scotland,‌ ‌the‌ ‌U.K.‌ ‌and‌ ‌(‌17‌)‌ ‌______‌ ‌parts‌ ‌of‌ ‌Northern‌ ‌Europe,‌ ‌Samhain‌ ‌(meaning‌ ‌literally,‌ ‌in‌ ‌modern‌ ‌Irish,‌ ‌“summer's‌ ‌end”)‌ ‌marked‌ ‌the‌ ‌end‌ ‌of‌ ‌summer‌ ‌and‌ ‌kicked‌ ‌off‌ ‌the‌ ‌Celtic‌ ‌new‌ ‌year.‌ ‌Ushering‌ ‌in‌ ‌a‌ ‌new‌ ‌year‌ ‌signaled‌ ‌a‌ ‌time‌ ‌of‌ ‌both‌ ‌death‌ ‌and‌ ‌rebirth,‌ ‌something‌ ‌that‌ ‌was‌ ‌doubly‌ ‌symbolic‌ ‌because‌ ‌it‌ ‌(‌18‌)‌ ‌______‌ ‌with‌ ‌the‌ ‌end‌ ‌of‌ ‌a‌ ‌bountiful‌ ‌harvest‌ ‌season‌ ‌and‌ ‌the‌ ‌beginning‌ ‌of‌ ‌a‌ ‌cold‌ ‌and‌ ‌dark‌ ‌winter‌ ‌season‌ ‌that‌ ‌would‌ ‌present‌ ‌plenty‌ ‌of‌ ‌challenges.‌ ‌
Eventually,‌ ‌Halloween‌ ‌became‌ ‌more‌ ‌popular‌ ‌in‌ ‌secular‌ ‌culture‌ ‌than‌ ‌All‌ ‌Saints'‌ ‌Day.‌ ‌The‌ ‌pagan-turned-‌ ‌Christian‌ ‌practices‌ ‌of‌ ‌dressing‌ ‌up‌ ‌in‌ ‌costumes,‌ ‌playing‌ ‌pranks‌ ‌and‌ ‌handing‌ ‌out‌ ‌offerings‌ ‌have‌ ‌evolved‌ ‌into‌ ‌popular‌ ‌traditions‌ ‌even‌ ‌for‌ ‌those‌ ‌(‌19‌)‌ ‌______‌ ‌may‌ ‌not‌ ‌believe‌ ‌in‌ ‌otherworldly‌ ‌spirits‌ ‌or‌ ‌saints.‌ ‌(‌20‌)‌ ‌______,‌ ‌whether‌ ‌Halloween‌ ‌celebrants‌ ‌know‌ ‌it‌ ‌or‌ ‌not,‌ ‌they’re‌ ‌following‌ ‌the‌ ‌legacy‌ ‌of‌ ‌the‌ ‌ancient‌ ‌Celts‌ ‌who,‌ ‌with‌ ‌the‌ ‌festival‌ ‌of‌ ‌Samhain,‌ ‌celebrated‌ ‌the‌ ‌inevitability‌ ‌of‌ ‌death‌ ‌and‌ ‌rebirth.‌ ‌

Question‌ ‌20‌‌ ‌‌(TH):‌...................

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: 
Any list of the greatest thinkers in history contains the name of the brilliant German physicist Albert Einstein. His theories of relativity led to entirely new ways of thinking about time, space, matter, energy, and gravity. Einstein's work led to such scientific advances as the control of atomic energy, even television as a practical application of Einstein's work. In 1902 Einstein became an examiner in the Swiss patent office at Bern. In 1905, at age 26, he published the first of five major research papers. The first one provided a theory explaining Brownian movement, the zig-zag motion of microscopic particles in suspension. The second paper laid the foundation for the photon, or quantum, theory of light. In it he proposed that light is composed of separate packets of energy, called quanta or photons, that have some of the properties of particles and some of the properties of waves. A third paper contained the "special theory of relativity" which showed that time and motion are relative to the observer, if the speed of light is constant and the natural laws are the same everywhere in the universe. The fourth paper was a mathematical addition to the special theory of relativity. Here Einstein presented his famous formula, E = m(cc), known as the energy mass equivalence. In 1916, Einstein published his general theory of relativity. In it he proposed that gravity is not a force, but a curve in the space-time continuum, created by the presence of mass. Einstein spoke out frequently against nationalism, the exalting of one nation above all others. He opposed war and violence and supported Zionism, the movement to establish a Jewish homeland in Palestine. When the Nazis came to power in 1933, they denounced his ideas. He then moved to the United States. In 1939 Einstein learned that two German chemists had split the uranium atom. Einstein wrote to President Franklin D. Roosevelt warning him that this scientific knowledge could lead to Germany developing an atomic bomb. He suggested the United States begin its own atomic bomb research.

Einstein was a citizen of all of the following countries EXCEPT ________ 

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.

   Many people believe that watching television has resulted in lower reading standards in schools. However, the link between television and printed books is not as simple as that. In many cases, television actually encourages people to read; for example, when a book is turned into a TV series, its sales often go up. One study of this link examined six-year-old children who were viewing a special series of 15-minute programs at school. The series was designed to encourage love of books, as well as to develop the basic mechanical skills of reading. Each program is an animated film of a children's book. The story is read aloud and certain key phrases from the book appear on the screen, beneath the picture. Whenever a word is read, it is also highlighted on the TV screen.

   One finding was that watching these programs was very important to the children. If anything prevented them from seeing a program, they were very disappointed. What's more, they wanted to read the books which the different parts of the series were based on.

   The programs also gave the children more confidence when looking at these books. As a result of their familiarity with the stories, they would sit in pairs and read the stories aloud to each other. On each occasion, the children showed great sympathy when discussing a character in a book because they themselves had been moved when watching the character on television.

What kind of film is each program?

Choose the letter A, B, C or D to complete the passage below

When people think of domestic abuse, they often focus __________ (1) domestic violence. But domestic abuse includes any attempt by one person in __________ (2) intimate relationship or marriage to dominate and control the other. Domestic violence and abuse are used for one purpose and one purpose only: __________ (3) and maintain total control over you. An abuser doesn’t “play fair.” Abusers use fear, guilt, shame, and intimidation to wear you down and keep you under __________ (4) thumb.

__________ (5) violence and abuse can happen to anyone; it does not discriminate. Abuse happens within heterosexual relationships and in same-sex partnerships. It __________ (6) within all age ranges, ethnic backgrounds, and economic levels. And __________ (7) women are more often victimized, men also experience abuse—especially verbal and emotional. The bottom line is that abusive behavior is never __________ (8), whether from a man, woman, teenager, or an older adult. You deserve to feel valued, respected, and safe.

Domestic abuse often escalates __________ (9) threats and verbal assault to violence. And while physical injury may pose the most obvious danger, the emotional and psychological consequences of domestic abuse are also severe. Emotionally abusive relationships can destroy your self-worth, __________ (10) to anxiety and depression, and make you feel helpless and alone. No one should have to endure this kind of pain—and your first step to breaking free is recognizing that your relationship is abusive.

(8).........................

Read the passage carefully and choose the correct answer A, B, C or D
 Diwali is a main Hindu festival. It is known as the “Festival of Lights”. It makes the victory of good over evil. In other words, lights are symbols of victory of brightness over darkness. People in India turn on lamps in every house and watch firecrackers in the night sky. These lights are a way showing honor to the gods of India for giving the people health, knowledge, riches and peace.

 On the day of Diwali, children get up at 3:00 a.m and take a bath. They dress up in festival clothes, light up the candles and share sweets. There is competition among the children to light the first firecracker and to make the loudest noise. Soon, the whole sky is bright. Children seem to have the most fun during this festival.

The world honor in the first paragraph 1 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 following questions.

Bees, classified into over 10,000 species, are insects found in almost every part of the world except the northernmost and southernmost regions. One commonly known species is the honeybee, the only bee that produces honey and wax. Humans use wax in making candles, lipsticks, and other products, and they use honey as food. While gathering the nectar and pollen with which they make honey, bees are simultaneously helping to fertilize the flowers on which they land. Many fruits and vegetables would not survive if bees did not carry the pollen from blossom to blossom.

Bees live in a structured environment and social structure within a hive, which is a nest with storage space for the honey. The different types of bees each perform a unique function. The worker bee carries nectar to the hive in a special stomach called a honey stomach. Other workers make beeswax and shape it into a honeycomb, which is a waterproof mass of six-sided compartments, or cells. The queen lays eggs in completed cells. As the workers build more cells, the queen lays more eggs.

All workers, like the queen, are female, but the workers are smaller than the queen. The male honeybees are called drones; they do no work and cannot sting. They are developed from unfertilized eggs, and their only job is to impregnate a queen. The queen must be fertilized in order to lay worker eggs. During the season when less honey is available and the drones are of no further use, the workers block the drones from eating the honey so that they will starve to death.

It is stated in paragraph 2 that a hive is ________.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
In recent years there have (31)_________many articles on air polution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is becoming more and more contaminated, and that Man, through his carelessness, may run (32)_________of pure air to breathe.
Automobiles and industries mainly account (33)_________air pollution in most cities. They pour into the air such gases as carbon monoxide, sulphur and nitrogen oxides, which are very harmful (34)_________humans. Worrse still, these gases, a series of chemical changes, turn into toxic acids. They fall down in "acid rains", raising the acidity in the air, soil and water to dangerous levels and affecting not only tress but also fish and other wildlife. Many industrial countries in Europe and North America have suffered bad effects (35) ________  those "rains”.
(33).................

Read the passage below and choose one correct answer for each question.

It has been thought that women are the second class in citizen, and men are the first. There is not a real equality of opportunity for men and women. Years ago, people were living in a man-dominated society. Women had to obey their husbands and fathers absolutely. Women's place was in the kitchen and women's work was housework. In many places, women were not even allowed to go to school. Women had no rights, even the right to choose husband for themselves. Men usually occupied high positions in society so they thought they were more intelligent than women. Men often considered women as their property. Sometimes, they were mistreated by their husbands and suffered the problem as a fate. Many parents did not even want to daughters.

Despite the progress, there remain outdated beliefs about women's roles, traditionally passed down from generation to generation. Men are commonly seen as the strong bodies, bread-winners in the family and key leaders in society, while women are restricted to being housewives and child bearing and care, and housework such as washing and cooking.

According to social surveys, many women in the 21st century still have to work over 12 hours a day including working in offices and doing countless household chores without any help from their husbands. In some regions, the labor of women is not recognized despite the hardships they endure to support the whole family. Moreover, women are the direct victims of family violence, especially in rural areas.

Thanks to the women's liberation movement, nowadays women have proved that they are equal to men in every aspect. An average woman has weaker muscles than an average man but she may be as intelligent as he is. Women can do everything that men can, and women can do one thing that no man can: they produce children.

Which is not women's role in the former days?

As many as one thousand years ago in the Southwest, the Hopi and Zuni Indians of North America were building with adobe-sun-baked brick plastered with mud.  Their homes looked remarkably like modern apartment houses. Some were four stories high and contained quarters for perhaps a thousand people, along with storerooms for grain and other goods. These buildings were usually put up against cliffs, both to make construction easier and for defense against enemies. They were really villages in themselves, as later Spanish explorers must have realised since they called them "pueblos", which is Spanish for towns. The people of the pueblos raised what are called "the three sisters" - corn,  beans, and squash. They made excellent pottery and wove marvelous baskets, some so fine that they could hold water. The Southwest has always been a dry country, where water is scarce. The Hopi and Zuni brought water from streams to their fields and gardens through irrigation ditches. Water was so important that it played a major role in their religion. They developed elaborate ceremonies and religious rituals to bring rain. The way of life of less - settled groups was simpler and more strongly influenced by nature.
Small tribes such as the Shoshone and Ute wandered the dry and mountainous lands between the Rocky Mountains and the Pacific Ocean. They gathered seeds and hunted small animals such as rabbits and snakes.
In the Far North, the ancestors of today's Inuit hunted seals, walruses, and the great whales. They lived right on the frozen season shelters called igloos built of blocks of packed snow. When summer came, they fished for salmon and hunted the lordly caribou.
The Cheyenne, Pawnee and Sioux tribes, known as the Plains Indians, lived on the grasslands between the Rocky Mountains and the Mississippi River. They hunted bison, commonly called the buffalo. Its meat was the chief food of these tribes, and its hide was used to make their clothing and the covering of their tents and tepees.

The author uses the phrase "the three sisters" refers to ..................

Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop.
Uncompromising as it is, the desert has not eliminated life but only those forms unable to withstand its desiccating effects. No moist- skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated.
Having adapted to their austere environment, they are as healthy as animals anywhere else in the word. The secret of their adjustment lies in the combination of behavior and physiology. None could survive if, like mad dogs and Englishmen, they went out in the midday sun; many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun- baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.

Man can hardly understand why many animals live their whole life in the desert, as________.

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.

   My family consists of four people. There's my father whose name is Jan, my mother whose name is Marie, my brother, Peter and of course, me. I have quite a large extended family as well but, only the four of us live together in our apartment in a block of flats. My father is fifty-two years old. He works as an accountant in an insurance company. He is tall and slim, has got short brown and gray hair and blue eyes. My father likes gardening very much as well as listening to music and reading books about political science. His special hobbies are bird watching and travelling.

   Now I’ll describe my mother and my brother. My mother is forty-seven and she works as a nurse in a hospital. She is small, and slim, has short brown hair and green eyes. She likes bird watching and travelling too, so whenever my parents are able to they go someplace interesting for nature watching. Since we have a cottage with a garden they both spend a lot of time there. My brother is sixteen. He is slim and has short brown hair and blue eyes. He also attends high school. He is interested in computers and sports like football and hockey. He also spends a lot of time with his friends.

   I have only one grandmother left still living. She is in pretty good health even at the age of seventyeight so she still lives in her own flat. I enjoy spending time with her when I can. Both my grandfathers died from cancer because they were smokers, which was really a great tragedy because I didn't get chance to know them. My other grandmother died just a few years ago. I also have a lot of aunts, uncles, and cousins. The cousin I’m closest to is my uncle’s daughter Pauline. We have a lot in common because we are both eighteen and so we are good friends.

   My parents have assigned me certain duties around the house. I don't mind helping out because everyone in a family should contribute in some way. I help with the washing up, the vacuuming and the shopping. Of course I also have to help keep my room tidy as well. My brother is responsible for the dusting and mopping. He also has to clean his own room. Even though my brother and I sometimes fight about who has to do what job, we are still very close. I am also very close to my parents and I can rely on them to help me. My parents work together to keep our home well maintained and it seem they always have a project or another that they are working on. They respect each other's opinions and even if they disagree they can always come to a compromise. I hope in the future that 1 have a family like ours.

What does the writer’s brother do?

Sunlight offers many ways to get energy. A window can allow warm sunlight into your room. Solar water-heating systems can use sunlight to warm the water for your home, swimming pool and school. Sunlight also warms the Earth and causes wind. Electricity can be made by wind generators. 
Photovoltaic, or PV system use a type of material that converts sunlight into electricity. PV systems can power your air conditioner or a satellite like the International Space Station. PV systems are also used to run a calculator, recharge cell phone, or even power lightweight cars. 
Sunlight is also changed into electricity by concentrating solar power or CSP systems. CSP systems have mirrors that focus the sunlight. The concentrated sunlight turns water into steam which turns a turbine that is connected to an electric generator. A CSP system usually uses sunlight to make steam. CSP power plants can store large amount of heat. The stored heat is used to make electricity at night. During cloud days, many CSP plants can also burn natural gas to provide the heat that is used to turn water into steam. 
Sunlight provides the energy needed to grow plants and make large amount of environmentally friendly heat and electricity. Solar energy can provide power today and for a long time in the future. 

Which of the following statements is NOT true? 

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 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 the 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 unmanipulated, 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, for at its best the realistic cinema specializes in art that conceals art

The word "preserve" is closest in meaning to..................

Why is it that flying to New York from London will leave you feeling less tired than flying to London from New York? The answer may be a clear case of biology not being able to keep up with technology.
Deep inside the brain there is a "clock" that governs every aspect of the body's functioning: sleep and wake cycles, levels of alertness, performance, mood, hormone levels, digestion, body temperature and so on. It regulates all of these functions on a 24-hour basis and is called the circadian clock (from the Latin, circa "about" + dies "day"). This body clock programmes us to be sleepy twice a day, between 3-5 a.m and again between 3-5 p.m.
Afternoon tea and siesta times are all cultural responses to our natural biological sleepiness in the afternoon.
One of the major causes of the travelers' malady known as jet lag is the non-alignment of a person's internal body clock with clocks in the external world. Crossing different time zones confuses the circadian clock, which then has to adjust to the new time and patterns of light and activity. To make matters more complex, not all internal body functions adjust at the same rate. So your sleep/wake may adjust to a new time zone at one rate, while your temperature adjusts at a different pace. Your digestion may be on a different schedule altogether.
Though we live in a 24-hour day, the natural tendency of the body clock is to extend our day beyond 24 hours. It is contrary to our biological programming to shrink our day. That is why traveling in a westward direction is more body-clock friendly than flying east. NASA studies of long haul pilots showed that westward travel was associated with significantly better sleep quantity and quality than eastward flights.
When flying west, you are "extending" your day, thus traveling in the natural direction of your internal clock. Flying eastward will involve "shrinking" or reducing your day and is in direct opposition to your internal clock's natural tendency. One of the more common complaints of travelers is that their sleep becomes disrupted. There are many reasons for this: Changing time zones and schedules, changing light and activity levels, trying to sleep when your body clock is programmed to be awake, disruption of the internal circadian clock and working longer hours.
Sleep loss, jet lag and fatigue can seriously affect our ability to function well. Judgment and decision-making can be reduced by 50%, attention by 75 percent, memory by 20 percent and communication by 30 percent.
It is often suggested that you adjust your watch as soon as you board a plane, supposedly to try to help you adjust to your destination's schedule as soon as you arrive. But it can take the body clock several days to several weeks to fully adjust to a new time zone.

The word "malady" is closest in meaning to ......................

Stars have been significant features in the design of many United States coins and their number has varied from one to forty-eight stars. Most of the coins issued from about 1799 to the early years of the twentieth century bore thirteen stars representing the thirteen original colonies. Curiously enough, the first American silver coins, issued in 1794, had fifteen stars because by that time Vermont and Kentucky has joined the Union. At that time it was apparently the intention of mint officials to add a star for each new state. Following the admission of Tennessee in 1796, for example, some varieties of half dimes, dimes, and half-dollars were produced with sixteen starts. As more states were admitted to the Union, however, it quickly became apparent that this scheme would not prove practical and the coins from A798 on were issued with only thirteen stars-one for each ofthe original colonies. Due to an error at the mint, one variety of the A828 half cent was issued with only twelve stars. There is also a variety of the large cent with only A2 stars, but this is the result of a die breakand is not a true error.

Why was a coin produced in 1828 with only twelve stars? 

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: 
Until recently, most American entrepreneurs were men. Discrimination against women in business, the demands of caring for families, and lack of business training had kept the number of women entrepreneurs small. Now, however, businesses owned by women account for more than $40 billion in annual revenues, and this figure is likely to continue rising throughout the 1990s. As Carolyn Doppelt Gray, an official of the Small Business Administration, has noted, “The 1970s was the decade of women entering management, and the 1980s turned out to be the decade of the woman entrepreneur". What are some of the factors behind this trend? For one thing, as more women earn advanced degrees in business and enter the corporateworld, they are finding obstacles. Women are still excluded from most executive suites. Charlotte Taylor, a management consultant, had noted, "In the 1970s women believed if they got an MBA and worked hard they could become chairman of the board. Now they've found out that isn't going to happen, so they go out on their own".
In the past, most women entrepreneurs worked in "women's" fields: cosmetics and clothing, for example. But this is changing. Consider ASK Computer Systems, a $22-million-a-year computer software business, it was founded in 1973 by Sandra Kurtzig, who was then a housewife with degrees in math and engineering. When Kurtzig founded the business, her first product was software that let weekly newspapers keep tabs on their newspaper carriers-and her office was a bedroom at home, with a shoebox under the bed to hold the company's cash, After she succeeded with the newspaper software system, she hired several bright computer-science graduates to develop additional programs. When these were marketed and sold, ASK began to grow. It now has 200 employees, and Sandra Kurtzig owns $66.9 million of stock.
Of course, many women who start their own businesses fail, just as men often do. They still face hurdles in the business world, especially problems in raising money; the banking and finance world is still dominated by men, and old attitudes die hard. Most businesses owned by women are still quite small But the situation is changing; there are likely to be many more Sandra Kurtzigs in the years ahead.

It can be inferred from the passage that the author believes that business operated by women are small because________.