+ Babies do it for up to 8 hours a day. Sleep. No one can live without it. But how much do we really need?
Scientists say that we all need 8 hours’s sleep every night .They find that, on average, adults sleep for 7 hours a night, with 32% sleeping less than 6 hours .They also say that the idea that we need less sleep as we get older is completely untrue. Professor Jim Horne of Southborough University studied a group of people who could spend as many hours as they wanted in bed ; after 10 hours they didn’t find it any easy to get up in the morning.
*Questions:
1.How many hours a day do babies sleep?
2.How many hours a day should we sleep?
3.How many hours a day do most people sleep?
4.What percentage of people sleep less than 6 hours a day?
5. Can people get up early in the morning after 10 hours’ sleep?

II. Read the following passage and answer the following questions. Write your answers in the provided space.
(1pt.)

SLEEPY TEENS

When school superintendent Russell Dever enters the local coffee shop at around 7:20 A.M., it is crowded with
students. “The line is out the door because our high school kids are getting coffee,” he said. And they are not standing in line
for the decaf – they need the caffeine to stay awake in class. Talk to American high school students and you hear the
complaints about how late they stay up, how little they sleep – and how early they must be in class.
These days, there is increasing concern in schools across the United States about students who are not completely
awake in morning classes. School officials in some states have even changed start times so teenagers can sleep later.
According to sleep expert Mary Carskadon, the fact that many teenagers work long hours outside of the school and have
computers and televisions in their bedrooms contributes to a serious lack of sleep. But, she said, the problem is also due to
biology. As the bodies of teenagers develop, their brains also change. These changes make teens more likely than adults to
have trouble sleeping at night.
Teenagers need at least eight to nine hours of sleep a night, but the average teen gets a lot less. Carskadon’s
study, completed in the fall of 2001 with researcher Amy Wolfson, showed that nearly 30 percent of students in the tenth

grade slept less than six hours on school nights. Less than 15 percent got more than eight hours of sleep each night. Eighth-
graders averaged eight hours of sleep a night, although that age group, she said, needs at least nine hours a night. Even

more remarkable are the results of a 1997-1998 school year study. In that study, 12 out of 24 U.S. high school students who
were part of an experiment at a sleep laboratory had brain wave patterns similar to those of someone with narcolepsy, a
serious condition that affects sleep. “What’s going in on is that at 8:30 in the morning these kids ... would normally be in
school sitting in a classroom, but ... their brain is still in the middle of the night,” said Carskadon.
Parent Dawn Dow says her son just cannot go to bed before 10 P.M. “Last year he was trying to put himself to bed
at 8:30 and was coming in 9:30 and 10 in tears saying, ‘I just can’t go to sleep.’ It is not a case of children wanting to be up
late ... It is a change in his chemistry.”
So would letting teenagers wake up later make a difference? Kyla Wahlstrom of the University of Minnesota in the
United States studies the effects of changing school starts time. She has looked at students in Edina and Minneapolis, two
cities in Minnesota, where public school officials have moved high school starting times past 8:30 A.M. In Minneapolis, the
middle school begins at 9:30 A.M. She said the later starting times have reduced students absences. They have also lowered
dropout rates by 8 percent over four years. In addition, she said, teachers report that students are not sleeping at their desks

during the first two hours of class anymore. She said 92 percent of parents from Edina reported that their teenagers are
easier to live with. The students reported that they were feeling less depressed and were getting better grades.
Big changes in school start times may not be possible in some areas. However, Wahlstrom said her research
shows that even small changes can contribute to a solution to this serious problem.
Questions 1 to 6: Decide if the following statements are true, false, or not given according to the information
in the reading passage. Write T (true), F (false), or NG (not given) in the provided space.
Question 1 Most teenagers sleep more than they should.
Question 2 There are scientific reasons that explain why teenagers have difficulty sleeping at night.
Question 3 The brains of teenagers are the same as the brains of adults.
Question 4 Teenagers can do their best schoolwork in the early morning.
Question 5 Some schools start their classes later so that teenage students can get more sleep in the morning.
Question 6 Many parents do not want high school officials to change school start times.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.

          Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.

          Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.

What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.

New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUP

All of the following are mentioned as those whose performance is affected by ‘sleep debt’ EXCEPT_____.

A. doctors

B. drivers

C. biologists

D. engineers

THE NEED FOR SLEEP

How much sleep (1) ………………….. we really need? This can vary quite a lot between individuals. However, it is widely believed that between 6-8 hours (2) ………………….. healthy. What is particularly important is that this sleep happens (3) ………………….. the right time: that it fits in with our body’s natural rhythm. If you suffer from sleepiness or dysfunction during (4) ………………….. day then you are probably not getting enough sleep when you most need it. Typical symptoms of a lack of sleep (5) ………………….. low concentration, poor memory and feeling irritable. Getting the right amount of sleep is not only important in terms of being able (6) ………………….. function properly on a day to day basis but it also (7) ………………….. an impact on your overall health. Research suggests that people (8) ………………….. sleep between 6 to 7 hours per night are likely to live longer (9) ………………….. those who sleep less than 6 or more than 8 hours per night. One reason (10) ………………….. this is because of the effect sleep has on our immune system. There is a belief that old people need less sleep than other adults, however, this is not in fact true. The elderly need (11) ………………….. much sleep as when they were younger but changes to their body’s rhythm and health problems might make it more difficult for (12) ………………….. to sleep through the night. As a result (13) ………………….. is common for old people to fall asleep during the day.

THE NEED FOR SLEEP

How much sleep (1) ………………….. we really need? This can vary quite a lot between individuals. However, it is widely believed that between 6-8 hours (2) ………………….. healthy. What is particularly important is that this sleep happens (3) ………………….. the right time: that it fits in with our body’s natural rhythm. If you suffer from sleepiness or dysfunction during (4) ………………….. day then you are probably not getting enough sleep when you most need it. Typical symptoms of a lack of sleep (5) ………………….. low concentration, poor memory and feeling irritable. Getting the right amount of sleep is not only important in terms of being able (6) ………………….. function properly on a day to day basis but it also (7) ………………….. an impact on your overall health. Research suggests that people (8) ………………….. sleep between 6 to 7 hours per night are likely to live longer (9) ………………….. those who sleep less than 6 or more than 8 hours per night. One reason (10) ………………….. this is because of the effect sleep has on our immune system. There is a belief that old people need less sleep than other adults, however, this is not in fact true. The elderly need (11) ………………….. much sleep as when they were younger but changes to their body’s rhythm and health problems might make it more difficult for (12) ………………….. to sleep through the night. As a result (13) ………………….. is common for old people to fall asleep during the day.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.

          Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.

          Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.

What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.

New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUP

According to the third paragraph, which of the following statements is NOT TRUE?

A. Our social life has no influence on our hours of sleep. 

B. The sun obviously determined our daily routines. 

C. The electric light was invented in the 19th century. 

D. The electric light has changed our daily cycle of sleep.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.

          Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.

          Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.

What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.

New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUP

The phrase “round the clock” in the second paragraph is similar in meaning to______.

A. surrounded with clocks

B. all day and night

C. during the daytime 

D. having a round clock

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.

          Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.

          Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.

What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.

New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUP

Which of the following would the writer of the passage approve of?

A. Our world would be a much safer place without drinkers. 

B. Both drunken drivers and sleep-deprived people should be criticized. 

C. There is no point in criticizing irresponsible people in our society. 

D. We certainly can function well even when we hardly sleep.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.

          Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.

          Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.

What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.

New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUP

Which of the following could best serve as the title of the passage?

A. Accident Prevention: Urgent!

B. Sleep Deprivation: Causes and Effects 

C. A Society of Sleepless People

D. A Well-known Biologist