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."

4. What did the Platform for Action in the World Conference on Women held in Beijing, China, in 1995 focus on?

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 ______.

Read the following passage and choose the best answer for each blank.

(1) _____ history, women have always aimed for a recognized place in (2) _____. Guided by their own (3) _____ of knowledge and expertise,  women  like  Marie  Curie  in  science,  Mary  Wollstonecraft  in  literary  writing,  Simone  de  Beauvois  in  philosophical  existentialist debate, and Marie Stopes, in medicine, to name a few, have brought about (4) _____ awareness of the role of  women in any walks of life. These  women  have  helped  redefine  and  (5)  _____  the  nature  of  women's  place  in  society.  Today  the  (6)  _____  of  global  women's organizations and the impact of  women's contributions (7) _____ society  show that progress has been made and the progress in furthering the role of  women in society has been some benefit to the (8) _____ woman. It is true to say that not all women have the same need. The need of the woman who stays at home and (9) _____ children will differ  widely  from the woman who works outside. Nonetheless, in the extensive field of equal opportunities, it would be good to know that access is given to both with equal measure according to the true value of respective abilities. It also would be good to know that the woman at home is recognized as a valued (10) _____ of society just as much as the one who deals on business outside the home.

(5) _____

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.

(9).........................

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 ______

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.

12..................

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?

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.

According to Einstein's special theory of relativity,    .................

Read the following passage and choose the best answer for each blank.

(1) _____ history, women have always aimed for a recognized place in (2) _____. Guided by their own (3) _____ of knowledge and expertise,  women  like  Marie  Curie  in  science,  Mary  Wollstonecraft  in  literary  writing,  Simone  de  Beauvois  in  philosophical  existentialist debate, and Marie Stopes, in medicine, to name a few, have brought about (4) _____ awareness of the role of  women in any walks of life. These  women  have  helped  redefine  and  (5)  _____  the  nature  of  women's  place  in  society.  Today  the  (6)  _____  of  global  women's organizations and the impact of  women's contributions (7) _____ society  show that progress has been made and the progress in furthering the role of  women in society has been some benefit to the (8) _____ woman. It is true to say that not all women have the same need. The need of the woman who stays at home and (9) _____ children will differ  widely  from the woman who works outside. Nonetheless, in the extensive field of equal opportunities, it would be good to know that access is given to both with equal measure according to the true value of respective abilities. It also would be good to know that the woman at home is recognized as a valued (10) _____ of society just as much as the one who deals on business outside the home.

(1) _____

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 21 to 25.

Every four years people all over the world watch the Olympic Games. It is a time for all kinds of people to unite in peace. Some of them join together to compete for gold medals. Millions of other people watch them on television.

Why do we have the Olympic? How did they begin?

The first Olympic Games were in Greece in 776 B.C. There was only one event. People ran a nice the length of the stadium. The Games lasted one day.

Slowly people added more events. The Games were only for men, and women could not even watch them. Only Greeks competed. They came from all parts of the Greek world. The time of the Games way; a time of peace, and government let everyone travel safely. The winners became national heroes.

The first modem Games were in 1896 in Athens. The Greeks built a new stadium for the competition. Athletes from several countries competed. Then there were Olympics every four years in different cities in Europe and the United States until 1952. After that they were in Melbourne, Tokyo, Mexico City, and Montreal besides in European cities. Each year there were athletes from more nations. The first Winter Olympics were in 1924. The athletes compete in skiing and other winter sports.

How often do people all over the world watch the Olympic Games?

Read the passage and choose the correct answer:

On the provincial level, some women in Canada could vote beginning in 1916. Suffrage expanded to the federal level over the next few years: In 1917 nurses and women in the armed forces could vote, then women whose fathers, husbands, or sons were serving overseas. In 1918 legislation passed expanding suffrage to female citizens excluding Asian-Canadian women and First Nation women, who did not win the right to vote until the 1940s and 1960s, respectively.

Non-indigenous women in Australia got the right to vote beginning in 1895, when the state of South Australia passed colony- and state-wide suffrage, in addition to the right to stand for parliament. In 1899, state suffrage expanded to Western Australia. In 1902, non-indigenous women won the right to vote on the federal level with the passing of the Commonwealth Franchise Act. Indigenous Australians didn't get the federal right to vote until 1962.

 In 1917 nurses and women in the armed forces could vote.

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 is the main idea of the passage?

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. ..................

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.

   In early civilizations, citizens were educated informally, usually within the family unit. Education meant simply learning to live. As civilizations became more complex, however, education became more formal, structured and comprehensive. Initial efforts of the ancient Chinese and Greek societies concentrated solely on the education of males. The post-Babylonian Jews and Plato were exceptions to this pattern. Plato was apparently the first significant advocate of the equality of the sexes. Women, in his ideal state, would have the same rights and duties and the same educational opportunities as men. This aspect of Platonic philosophy, however, had little or no effect on education for many centuries, and the concept of a liberal education for men only, which had been espoused by Aristotle, prevailed.

   In ancient Rome, the availability of an education was gradually extended to women, but they were taught separately from men. The early Christians and medieval Europeans continued this trend, and singlesex schools for the privileged classes prevailed through the Reformation period. Gradually, however, education for women on a separate but equal basis to that provided for men was becoming a clear responsibility of society. Martin Luther appealed for civil support of schools for all children. At the Council of Trent in the 16th century, the Roman Catholic Church encouraged the establishment of free primary schools for children of all classes. The concept of universal primary education, regardless of sex, had been born, but it was still in the realm of the single-sex school.

   In the late 19th and early 20th centuries, co-education became a more widely applied principle of educational philosophy. In Britain, Germany, and the Soviet Union the education of boys and girls in the same classes became an accepted practice. Since World War II, Japan and the Scandinavian countries have also adopted relatively universal co-educational systems. The greatest negative reaction to coeducation has been felt in the teaching systems of the Latin countries, where the sexes have usually been separated at both primary and secondary levels, according to local conditions.

   A number of studies have indicated that girls seem to perform better overall and in science in particular in single-sex classes: during the adolescent years, pressure to conform to stereotypical female gender roles may disadvantage girls in traditionally male subjects, making them reluctant to volunteer for experimental work while taking part in lessons. In Britain, academic league tables point to high standards achieved in girls' schools. Some educationalists therefore suggest segregation of the sexes as a good thing, particularly in certain areas, and a number of schools are experimenting with the idea.

Co-education was negatively responded to in _______.

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.

(2).........................

Fill in each numbered blank with one suitable word or phrase. In  the  1960s  the  women's  liberation  movement  (1)  _____  suddenly  into  the  public  consciousness  and  quickly  grew  into  (2)  _____ largest  social movement  in the history  of  the  United  States.  Women's  liberation movement  was  a  continuation  of  the  19-century  women's rights movement. The movement's major (3) _____ has included not only legal, economic, and political gains (4) _____ also has changed the  ways  in  which  people  live,  dress,  dream  of  their  future,  and  (5)  ___  a  living.  About  health,  for  example,  many  male  physicians and hospital  have  made  major  improvements  in  the  (6)  _____  of  women;  more  and  more  women  have  become  doctors  and  succeeded  (7) _____  their  medical  research;  and  diseases  such  as  breast  cancer,  which  affects  many  women,  now  receive  better funding  and  treatment, thanks to women's (8) ___. Feminists have insisted that violence against women become a political issue. The women's liberation movement has also made changes in education: curricula and (9) _____ have been written to promote equal opportunity for girls and women; more and more female students are admitted to universities and professional schools.The  women's  liberation  movement  brought  about  a  radical  change  in  society  (10)  _____  it  took  a  decade  for  the  movement  to  reach women's awareness.

(7)  _____

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 “elements” 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.

SCIENCE FLYING IN THE FACE OF GRAVITY

It looked just like another aircraft from the outside. The pilot told his young passengers that it was built in 1964, a Boeing KC-135 refueling tanker, based on the 707. But appearances were deceptive, and the 13 students from Europe and the USA who boarded the aircraft were in for the flight of their lives.

Inside, the area that normally had seats had become a long white tunnel. Heavily padded from floor to ceiling; it looked a bit like a lunatic asylum. There were almost no windows, but lights along the padded walls eerily illuminated it. Most of the seats had been taken out apart from a few at the back, where the young scientists quickly took their places with a look of apprehension.

From 12 months, science students from across the continents had competed to win a place on the flight at the invitation of the European Space Agency. The challenge had been to suggest imaginative experiments to be conducted in weightless conditions. For the next two hours the Boeing's flight resembled that of an enormous bird which had lost its reason, shooting upwards towards the heavens before hurting towards Earth. The intention was to achieve weightlessness for a few seconds.

The aircraft took off smoothly enough, but any feelings that I and the young scientists had that we were on anything like a scheduled passenger service were quickly dismissed when the pilot put the plane into a 45-degree climb which lasted around 20 seconds. Then the engine cut out and we became weightless. Everything became confused, and left or right, up or down no longer had any meaning. After 10 seconds of free-fall descent, the pilot pulled the aircraft out of its nosedive. The return of gravity was less immediate than its loss, but was still sudden enough to ensure that some students came down with a bump. After two hours of going up and down in the plane doing experiments, the predominant feeling was one of exhilaration rather than nausea. Most of the students thought it was an unforgettable experience and one they would be keen to repeat.

What does the word eerily in paragraph 2 mean?

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 "it" refers to .....................

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 NOT mentioned by the author as a dwelling place  of early North America?

DISAPPEARING ALASKAN SEALS
On a winter afternoon, a dozen male Northern fur seals are on an island off south-western Alaska. To look at them, fighting for territory on the rocks, it’s hard to imagine that they are at the (27)____________of a baffling scientific mystery: why is this species beginning to disappear? These seals- which can weigh up to 270 kilograms-have an important and symbolic (28)_________in Alaska’s history. Their soft and luxurious fur, the coveted prize during the huge commercial sea harvests that were legal here in the Bering Sea through the early 20th century, was once so valuable it (29)_________Alaska’s economy. Starting in the 1950s, for reasons that are (30)_______because the harvests by then tended to be fairly small, the seal population began a slow decline . But lately it has been falling drastically, declining at an alarming (31)________of 6 per cent a year since 1998. From a (32)_________ of more than 2 million in Alaska in 1948, their numbers have fallen to about 1 million.
So (33)________, no one has been able to establish a precise cause for this, although theories (34)___________. The seals' food supply may be (35)________, or another species may be (36)________on the seals- perhaps killer whales, which no longer have as many great whales to eat because of harvesting of those mammals. Some people have suggested that the decline can be (37)______to entanglement in fishing nets ,but scientists say they doubt that this alone could (38)_________the recent population decline.
(29)....................................