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.

Which of the following best describes the organization of the passage?

Read the passage carefully and choose the correct answer:
Today, more and more women are actively participating in social activities both in urban and rural areas. Specifically, they have shined brightly in even many fields commonly regarded as the man's areas such as business, scientific research and social management. In some areas, women even show more overwhelming power than men. The image of contemporary Vietnamese women with creativeness, dynamism, success has become popular in Vietnam's society. The fact reveals that the gender gap has been remarkably narrowed and women enjoy many more opportunities to pursue their social careers and obtain success, contributing to national socio-economic development. 
According to Ms, Le Thi Quy, Director of the Gender/and Development Research Centre under the University of Social Sciences and Humanities, Hanoi National University, gender equity in Vietnam has reached a high level over the past decade. The rate of Vietnamese women becoming National Assembly members from the 9th term to the 11th term increased 8.7%, bringing the proportion of Vietnamese women in authority to 27.3%, the highest rate in Southeast Asia. There is no big gap in the level of literacy and schooling between men and women. Women account for about 37% of university and college graduates, 19.9% of doctoral degree holders and 6.7% of professors and associate professors. 
The legitimate rights of women and children are ensured more than ever before with more complete legal documents including laws, conventions and national action plans, among which the laws on "gender equity" mark a turning-point in the empowerment of women. 
Mass media also highlights the continued success of women in every field and honors their great importance in modern society, helping to do away with outdated perceptions about traditional women's duties. Many projects on reproductive health care, children protection, and family income improvement jointly conducted by various mass organizations, state agencies and non-governmental organizations have created favorable conditions for women to become involved.

According to the data in the text, ________.

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.

Years ago, woman were not allowed ______

Choose the option among  A, B, C or D that best answers the question about the passage:

"Since the 1940s, most international women’s rights efforts have been organized by the Commission on the Status of Women (CSW), an office established in 1947 by the United Nations (UN). The Commission is the only existing intergovernmental body that issues reports on and recommendations for the promotion of women’s political, social, economic, and cultural rights. The CSW also acts as an advocate for women’s rights and can urge immediate international action in cases of severe violations of women’s rights.
 The UN encouraged equality in the workplace for men and women when it sponsored the Convention Concerning Equal Remuneration for Men and Women Workers for Work of Equal Value in 1953 and the Convention Concerning Discrimination in Respect of Employment and Occupation in 1960. Over 100 countries ratified these measures. In 1975 the UN launched the Decade for Women, a ten-year effort to focus on women’s issues. From 1975 to 1985 international groups formed a series of conferences organized around the themes of equality, development, and peace. The conferences took place throughout the world and drew leaders and delegates from developing and industrialized nations alike. The Decade for Women culminated in the 1985 UN Nairobi Conference, held in Nairobi, Kenya, which was attended by 375 delegations of women from nations around the world.
 The United Nations’ Fourth World Conference on Women was held in Beijing, China, in 1995. Over 17,000 people registered for the event, including delegates from nearly 200 countries. The Platform for Action that emerged from the conference focused on the removal of obstacles to women’s equal participation in society. The most controversial sections of the platform concerned reproductive rights, particularly the right to have an abortion. The final document declared that “the ability of women to control their own fertility forms, an important basis for the enjoyment of other rights,” and asserted the right of women and men to have access to all legal methods of fertility regulation."

2. When was the first convention on women’s equality held?

Read the following passage and mark the letter A, B, C or D to indicate the correct answer for each of the blanks from 6 to 15

 
Revising for exams is not as easy as it looks. You will need to work out which routine suits you best, and then stick to it. Some people like studying at night when it’s quiet, whereas others find the early morning is a good time to get things done. You might enjoy (6)…….. to music while you revise, but this can be (7)……... Can you really concentrate (8)……….. two things at once? So think (9)……… you turn your radio on. Your (10)…….. is also important while you are revising. This may be a more than usually (11)………. period of your life, when you should take extra care to eat properly. No missed meals, or junk food, or (12)…….cups of coffee! Get plenty of exercise as well. If you have got fed up with (13)……. you’re doing, or find it hard to concentrate, go for a walk to clear your head. (14)……. exercise will help to keep your body fit and your brain working (15)………… Finally, you also need to take time off. Go out occasionally, see your friends, and make time to relax. Then you will return to your studies fresh and full of enthusiasm.

7. ..................

Rock carvings suggest that Stone Age people were hunting whales for food as early as 2,200 B.C. Such (31)______ hunting is still practised today in a number of societies including the Inuit people of Greenland and North America. Whaling became big (32)_____________ from the seventeenth century as the demand for whale bone and whale oil rose, and the humpback and sperm whales were hunted in increasing large number. (33)_________ just as stocks of these species began to fall, the explosive harpoon gun was invented. This weapon, together with the development of steam-powered ships, enable the whaler to hunt the fast moving fin and blue whales. In 1905, the whaling (34)____________ moved the water of Antarctica. The introduction of massive factory ships enabled the whales to be processed at sea. As a result, the blue whale had virtually disappeared by the 1950s. In 1946, The International Whaling Commision was established to maintain the declining whale populations. Quotas were set but these were often ignored and the numbers continued to fall. Hunting of many species continued until 1986 when the IWC finally responded to international (35)____________ and a band on commercial whaling was introduced.
(31).......................................

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.

Which of the following is TRUE of the Shoshone and Ute?

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.

   Over the past 600 years, English has grown from a language of few speakers to become the dominant language of international communication. English as we know it today emerged around 1350, after having incorporated many elements of French that were introduced following the Norman invasion of 1066. Until the 1600s, English was, for the most part, spoken only in England and had not extended even as far as two centuries, English began to spread around the globe as a result of exploration, trade (including slave trade), colonization, and missionary work. Thus, small enclaves of English speakers became established and grew in various parts of the world. As these communities proliferated, English gradually became the primary language of international business, banking and diplomacy.

   Currently, about 80 percent of the information stored on computer systems worldwide is English. Two thirds of the world’s science writing is in English, and English is the main language of technology, advertising, media, international airports, and air traffic controllers. Today there are more than 700 million English users in the world, and over half of these are nonnative speakers, constituting the largest number of non-native users than any other language in the world..

According to the passage, approximately how many non-native users of English are there in the world today?

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 goal of Internet-based encyclopedia Wikipedia (www.wikipedia.org) is to give everyone on the planet access to information. Like other encyclopedias, Wikipedia contains lots of information: more than 2.5 million articles in 200 different languages covering just about every subject. Unlike other encyclopedias, however, Wikipedia is not written by experts, but by ordinary people. These writers are not paid and their names are not published. They contribute to Wikipedia simply because they want to share their knowledge.
Encyclopedias began in ancient times as collections of writings about all aspects of human knowledge. The word itself comes from ancient Greek, and means "a complete general education". Real popularity for encyclopedias came in the nineteenth century in Europe and the United States, with the publication of encyclopedias written for ordinary readers. With the invention of the CD- ROM, the same amount of information could be put on a few computer discs. Then with the Internet, it became possible to create an online encyclopedia that could be constantly updated, like Microsoft's Encarta. However, even Internet-based encyclopedias like Encarta were written by paid experts. At first, Wikipedia, the brainchild of Jimmy Wales, a businessman in Chicago, was not so different from these. In 2001, he had the idea for an Internet-based encyclopedia that would provide information quickly and easily to everyone. Furthermore, that information would be available free, unlike other Internet encyclopedias at that time.
But Wales, like everyone else, believed that people with special knowledge were needed to write the articles, and so he began by hiring experts. He soon changed his approach, however, as it took them a long time to finish their work. He decided to open up the encyclopedia in a radical new way, so that everyone would have access not only to the information, but also to the process of putting this information online. To do this, he used what is known as "Wiki" software (from the Hawaiian word for "fast"), which allows users to create or alter content on web page. The system is very simple: When you open the web site, you can simply search for information or you can log on to become a writer or editor of articles. If you find an article that interests you - about your hometown, for example - you can correct it or expand it. This process goes on until no one is interested in making any more changes.

The phrase "these writers" in the first paragraph refers to________.

In the last third of the nineteenth century a new housing form was quietly being developed.   In 1869 the Stuyvesant, considered New York's first apartment house was built on East Eighteenth Street. The building was financed by the developer Rutherfurd Stuyvesant and designed by Richard Morris Hunt, the first American architect to graduate from the Ecole des Beaux Arts in Paris. Each man had lived in Paris, and each understood the economics and social potential of this Parisian housing form. But the Stuyvesant was at best a limited success.  In spite of  Hunt's  inviting façade, the living space was awkwardly arranged. Those who could afford them  were  quite  content  to remain in the more sumptuous, single-family homes, leaving the Stuyvesant to newly  married  couples and bachelors.
The fundamental problem with the Stuyvesant and the other early apartment buildings that quickly followed, in the 1870's and early 1880's was that they were confined to the typical New   York building lot. That lot was a rectangular area 25 feet wide by 100 feet deep-a shape perfectly suited for a row house The lot could also accommodate a rectangular tenement, though it could not yield the square, well-lighted, and logically arranged rooms that great apartment buildings require. Put even with the awkward interior configurations of the early apartment buildings, the idea caught on. It met the needs of a large and growing population that wanted something better than tenements but could not afford or did not want row  houses.
So while the city's newly emerging social leadership  commissioned  their  mansions, apartment houses and hotels began to sprout in multiple lots, thus breaking the initial space  constraints. In the closing decades of the nineteenth century,  large apartment houses  began dotting  the developed portions of New York City, and by the opening decades of the twentieth century, spacious buildings, such as the Dakota and the Ansoniafinally transcended the tight confinement of row house building lots. From there it was only a small step to building luxury apartment houses on  the newly created Park Avenue, right next to the fashionable Fifth Avenue   shopping area.

Why did the idea of living in an apartment become popular in the late 1800's?

Choose the option among A, B, C or D that best fits the blank space in the following passage: 

"The status of women’s rights today (1)….. dramatically in different countries and, in some cases, am ong groups within the same country, such as ethnic groups or economic classes.
 In recent decades women around the world have made strides in political participation. (2)….. the 1980s women could vote virtually everywhere in the world, except for a few Muslim countries. As of mid-2005, when women in Kuwait won suffrage, women could vote in all countries (3)…. Men could vote except Saudi Arabia. The right to vote usually included the right to (4)….. for elected office. In 2005 there were 12 female national leaders in the world, including 8 heads of (5)…… (3 monarchs and 5 presidents) and 4 heads of government (prime ministers). In 2005 women made (6)….. almost 16 percent of legislative bodies worldwide, compared to 11 percent in 1999 and 9 percent in 1987. Despite these advancements, women’s role in governmental decision-making remains (7) …...
 Many disparities persist between women’s legal rights and their economic status. Women today constitute nearly 70 percent of the world’s poor, (8) …..  international efforts to compensate women and men (9)…..  in the workplace. While women made up about 32 percent of the world’s labor force in 1990, the percentage of women in positions to make important decisions was far lower. In 2002 women held only 15.7 percent of corporate (10)…… positions in the 500 largest companies in the United States - an increase of 7 percentage points since 1995. In the mid-1990s women comprised only 1 percent of executives in the 1,000 largest corporations outside the United States."

6. In 2005 women made (6)….. almost 16 percent of legislative bodies worldwide, 

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.

What is the main topic of the passage?

Read the following passage and choose the letter A, B, C or D to indicate the best answer to each of the following question.

Music can move the soul. It can be a very strong influence. Some music can calm us down but other music can make us wild! How does music affect us? Music is used in a variety of ways. It is used in the medical field as a source of research and as a sort of treatments as well. Music has been used as treatment to lower blood pressure, help ill children recover quickly, treat mental illness, treat depression, aid in healing, and reduce stress and insomnia and premature infants. Julius Portnoy, a musicolo­gist, found that it can change heart rates, increase or decrease blood pressure, effect energy levels, and digestion, positively or negatively, depending on the type of music. Calming music, such as classical musk, was found to have a very calming effect on the body, and cause the increase of endorphins, thirty minutes of such music was equal to the effect of a dose of valium. Both hemispheres of the brain are involved in processing music. The music in these studies is not the lyrics, but the music itself, the melody, the tones, the tunes, the rhythm, and the chords. Conversely music has also been documented to cause sickness. The right, or wrong music, can be like a poison to the body. Studies had been done on plants and the results were that loud hard rock music killed plants and soft classical music made the plants grow faster. Music is very pow­erful, like a drug and can even be an addiction. According to Patty Hearst, a researcher on music, it was documented that music was used in the aid of brainwashing some people. In the book, "Elevator Music" by Joseph Lanza, it is stated that certain types of strong music over prolonged periods in certain conditions were shown to cause seizures.

According to writer,_________.

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.

   Over the past 600 years, English has grown from a language of few speakers to become the dominant language of international communication. English as we know it today emerged around 1350, after having incorporated many elements of French that were introduced following the Norman invasion of 1066. Until the 1600s, English was, for the most part, spoken only in England and had not extended even as far as two centuries, English began to spread around the globe as a result of exploration, trade (including slave trade), colonization, and missionary work. Thus, small enclaves of English speakers became established and grew in various parts of the world. As these communities proliferated, English gradually became the primary language of international business, banking and diplomacy.

   Currently, about 80 percent of the information stored on computer systems worldwide is English. Two thirds of the world’s science writing is in English, and English is the main language of technology, advertising, media, international airports, and air traffic controllers. Today there are more than 700 million English users in the world, and over half of these are nonnative speakers, constituting the largest number of non-native users than any other language in the world..

In the first paragraph, the word “emerged” 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.

The word “species” in the first sentence probably means ______.

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.

Which of the following can be inferred about the order in which Kentucky, Tennessee, and Vermont joined the Union?

In an age when technology is developing faster than ever before, many people are being attracted to the idea of looking back into the past. One way they can do this is by investigating their own family history. They can try to  (37)..........out more about where their family came from and what they did. This is now a fast-growing hobby, especial in countries with a  (38) .......... short history, like Australia and the United States.
It is one thing to spend some time going through a book on family history and to take the  (39) ..........  to investigate your own family's past. It is quite another to carry out the research work successfully. It is easy to set about it in a disorganised way and  (40)............ yourself many problems which could have been avoided with a little forward planning.
If your own family stories tell you that you are connected with a famous character, whether hero or criminal, do not let this idea take over your research. Just treat  it as an interesting possibility. A simple system for collecting and storing your track. The most important thing, (41)..............  find?
(38)................................

In an age when technology is developing faster than ever before, many people are being attracted to the idea of looking back into the past. One way they can do this is by investigating their own family history. They can try to  (37)..........out more about where their family came from and what they did. This is now a fast-growing hobby, especial in countries with a  (38) .......... short history, like Australia and the United States.
It is one thing to spend some time going through a book on family history and to take the  (39) ..........  to investigate your own family's past. It is quite another to carry out the research work successfully. It is easy to set about it in a disorganised way and  (40)............ yourself many problems which could have been avoided with a little forward planning.
If your own family stories tell you that you are connected with a famous character, whether hero or criminal, do not let this idea take over your research. Just treat  it as an interesting possibility. A simple system for collecting and storing your track. The most important thing, (41)..............  find?
(41)................................

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 advantage did children have from this program?

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:
It is relatively easy for computers to speak. A computer that says 'please' and 'thank you' in the right places is (31)_________miracle of science ,but recognizing the words that make up normal, human speech is another (32)_________ .
Not until now have computer been programmed to (33)_________to a range of spoken commands. Until recently it was thought that computers would have tobe programmed to the accent and speech hahits of each user,and only then would be able to respond (34)_________to their master's or mistress's voice.Now rapid progress is being made (35)_________systems programmed to adapt easily to each new speaker.
(34)...........................

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?