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Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the following questions.       Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication- having a mobile phone shows that they are cool and connected.       The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are connected that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are bad for your health.       On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.       What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.       As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.The word "potentially" in the 4th paragraph is CLOSET in meaning to ________.

Xem chi tiết 1.9 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the following questions.       Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication- having a mobile phone shows that they are cool and connected.       The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are connected that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are bad for your health.       On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.       What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.       As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.The most suitable title for the passage could be _________.

Xem chi tiết 1.6 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the following questions.       Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication- having a mobile phone shows that they are cool and connected.       The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are connected that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are bad for your health.       On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.       What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.       As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.The man mentioned in the passage, who used his cell phone too often, ________.

Xem chi tiết 1.7 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the following questions.       Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication- having a mobile phone shows that they are cool and connected.       The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are connected that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are bad for your health.       On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.       What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.       As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.According to the passage, what makes mobile phones potentially harmful is ________.

Xem chi tiết 1.2 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the following questions.       Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication- having a mobile phone shows that they are cool and connected.       The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are connected that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are bad for your health.       On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.       What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.       As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.According to the writer, people should ____________.

Xem chi tiết 1.9 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the following questions.       Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication- having a mobile phone shows that they are cool and connected.       The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are connected that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are bad for your health.       On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.       What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.       As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often The changes possibly caused by the cell phones are mainly concerned with _______.

Xem chi tiết 2.5 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.       Why is it that many teenagers have the energy to play computer games until late at night but can't find the energy to get out of bed in time for school? According to a new report, today's generation of children are in danger of getting so little sleep that they are putting their mental and physical health at (1)________. Adults can easily survive on seven to eight hours' sleep a night, (2)________ teenagers require nine or ten hours. According to medical experts, one in five youngsters gets anything between two and five hours' sleep a night less than their parents did at their age.       This raises serious questions about whether lack of sleep is affecting children's ability to concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time and poor concentration is well established. Research has shown that losing as little as half an hour's sleep a night can have profound (3)_________ on how children perform the next day. A good night's sleep is also crucial for teenagers because it is while they are asleep (4)________ they release a hormone that is essential for their 'growth spurt' (the period during teenage years when the body grows at a rapid rate). It's true that they can, (5)_______ some extent, catch up on sleep at weekends, but that won't help them when they are dropping off to sleep in class on a Friday afternoon. By Tim Falla and Paul A. Davies, Solutions Advanced. OUPĐiền vào ô (5).

Xem chi tiết 1.8 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.       Why is it that many teenagers have the energy to play computer games until late at night but can't find the energy to get out of bed in time for school? According to a new report, today's generation of children are in danger of getting so little sleep that they are putting their mental and physical health at (1)________. Adults can easily survive on seven to eight hours' sleep a night, (2)________ teenagers require nine or ten hours. According to medical experts, one in five youngsters gets anything between two and five hours' sleep a night less than their parents did at their age.       This raises serious questions about whether lack of sleep is affecting children's ability to concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time and poor concentration is well established. Research has shown that losing as little as half an hour's sleep a night can have profound (3)_________ on how children perform the next day. A good night's sleep is also crucial for teenagers because it is while they are asleep (4)________ they release a hormone that is essential for their 'growth spurt' (the period during teenage years when the body grows at a rapid rate). It's true that they can, (5)_______ some extent, catch up on sleep at weekends, but that won't help them when they are dropping off to sleep in class on a Friday afternoon. By Tim Falla and Paul A. Davies, Solutions Advanced. OUPĐiền vào ô (4).

Xem chi tiết 462 lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.       Why is it that many teenagers have the energy to play computer games until late at night but can't find the energy to get out of bed in time for school? According to a new report, today's generation of children are in danger of getting so little sleep that they are putting their mental and physical health at (1)________. Adults can easily survive on seven to eight hours' sleep a night, (2)________ teenagers require nine or ten hours. According to medical experts, one in five youngsters gets anything between two and five hours' sleep a night less than their parents did at their age.       This raises serious questions about whether lack of sleep is affecting children's ability to concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time and poor concentration is well established. Research has shown that losing as little as half an hour's sleep a night can have profound (3)_________ on how children perform the next day. A good night's sleep is also crucial for teenagers because it is while they are asleep (4)________ they release a hormone that is essential for their 'growth spurt' (the period during teenage years when the body grows at a rapid rate). It's true that they can, (5)_______ some extent, catch up on sleep at weekends, but that won't help them when they are dropping off to sleep in class on a Friday afternoon. By Tim Falla and Paul A. Davies, Solutions Advanced. OUPĐiền vào ô (3).

Xem chi tiết 560 lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.       Why is it that many teenagers have the energy to play computer games until late at night but can't find the energy to get out of bed in time for school? According to a new report, today's generation of children are in danger of getting so little sleep that they are putting their mental and physical health at (1)________. Adults can easily survive on seven to eight hours' sleep a night, (2)________ teenagers require nine or ten hours. According to medical experts, one in five youngsters gets anything between two and five hours' sleep a night less than their parents did at their age.       This raises serious questions about whether lack of sleep is affecting children's ability to concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time and poor concentration is well established. Research has shown that losing as little as half an hour's sleep a night can have profound (3)_________ on how children perform the next day. A good night's sleep is also crucial for teenagers because it is while they are asleep (4)________ they release a hormone that is essential for their 'growth spurt' (the period during teenage years when the body grows at a rapid rate). It's true that they can, (5)_______ some extent, catch up on sleep at weekends, but that won't help them when they are dropping off to sleep in class on a Friday afternoon. By Tim Falla and Paul A. Davies, Solutions Advanced. OUPĐiền vào ô (2).

Xem chi tiết 3.5 K lượt xem 4 năm trước

Read the following passage and choose the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.       Why is it that many teenagers have the energy to play computer games until late at night but can't find the energy to get out of bed in time for school? According to a new report, today's generation of children are in danger of getting so little sleep that they are putting their mental and physical health at (1)________. Adults can easily survive on seven to eight hours' sleep a night, (2)________ teenagers require nine or ten hours. According to medical experts, one in five youngsters gets anything between two and five hours' sleep a night less than their parents did at their age.       This raises serious questions about whether lack of sleep is affecting children's ability to concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time and poor concentration is well established. Research has shown that losing as little as half an hour's sleep a night can have profound (3)_________ on how children perform the next day. A good night's sleep is also crucial for teenagers because it is while they are asleep (4)________ they release a hormone that is essential for their 'growth spurt' (the period during teenage years when the body grows at a rapid rate). It's true that they can, (5)_______ some extent, catch up on sleep at weekends, but that won't help them when they are dropping off to sleep in class on a Friday afternoon. By Tim Falla and Paul A. Davies, Solutions Advanced. OUPĐiền vào ô (1).

Xem chi tiết 660 lượt xem 4 năm trước