March 21 has been declared World Sleep Day, a time to recognize and celebrate the value of sleep. Many sleep experts hope it will be a wake-up call.
According to a poll (民意调查)by the National Sleep Foundation, nearly 4 in 5 Americans don’t get as much sleep as they should during the workweek. On average, adults are thought to need at least eight hours of sleep a night, although some can manage with less and some won’t do well without more. But the survey found that, on workdays, only 21% of Americans actually get a full eight hours of sleep, and another 21% get less than six.
To many of us, the thought of spending more time sleeping is, well, a big yawn. On the other hand, the thought of being smarter, thinner, healthier and more cheerful has a certain appeal. And those are just a few of the advantages that can be ours if we consistently get enough sleep, researchers say. Also on the plus side: We’re likely to have better skin, better memories, better judgment, and, oh, yes, longer lives.
“When you lose even one hour of sleep for any reason, it influences your performance the next day,” says Dr. Alon Avidan, director of the UCLA Sleep Disorders Center.
A study published last year found the same to be true even of children. When kids aged 8 to 12 slept for just one hour less for four nights, they didn’t function as well during the day.
But sleeping has an image problem. “We see napping or sleeping as lazy,” says Jennifer Vriend, a clinical psychologist in Ottawa, Canada, and the leading author of the study with children. “We put so much emphasis on diet, nutrition and exercise. Sleep is in the back seat.” In fact, she adds, no matter how much we work out, no matter how well we eat, we can’t be in top physical shape unless we also get plenty of sleep.
1.The underlined part in Paragraph 1 means _____.
A. To wake up the sleepers
B. To draw people’s attention
C. To serve as a morning call
D. To declare the special day
2.From Paragraph 3 we can infer that _______
A. Being healthier is one of the advantages for us
B. Sleeping has nothing to do with one’s expectations
C. Spending more time on sleeping is a waste of time
D. Enough sleep is the guarantee of the appealing things
3.What Jennifer Vriend said in the last paragraph implies that _______.
A. Sleeping is an image problem
B. People care little about sleeping
C. Lazy people tend to sleep long
D. Sleeping is only part of our life
4.What is the purpose of the passage?
A. To talk about people’s sleeping problems.
B. To provide an investigation result of sleeping.
C. To arouse the awareness of enough sleeping.
D. To stress the function of sleeping at night.
高二英语阅读理解中等难度题
March 21 has been declared World Sleep Day,a time to recognize and celebrate the value of sleep.Many sleep experts hope it will be a wake-up call.
According to a 2016 poll(民意调查)by the National Sleep Foundation,nearly 4 in 5 Americans don't get as much sleep as they should during the workweek.On average,adults are thought to need at least eight hours of sleep a night,although some can manage with less and some won't do well without more.But the survey found that,on workdays,only 21% of Americans actually get a full eight hours of sleep,and another 21% get less than six.
To many of us,the thought of spending more time sleeping is,well,a big yawn.On the other hand,the thought of being smarter,thinner,healthier and more cheerful has a certain appeal.And those are just a few of the advantages that can be ours if we consistently get enough sleep, researchers say.Also on the plus side: We're likely to have better skin,better memories,better judgment,and,oh,yes,longer lives.
"When you lose even one hour of sleep for any reason,it influences your performance the next day," says Dr.Alon Avidan,director of the UCLA Sleep Disorders Center.
A study published last year found the same to be true even of children. When kids aged 8 to 12 slept for just one hour less for four nights,they didn't function as well during the day.
But sleeping has an image problem."We see napping or sleeping as lazy," says Jennifer Vriend,a clinical psychologist in Ottawa,Canada,and the leading author of the study with children."We put so much emphasis on diet,nutrition and exercise.Sleep is in the back seat." In fact,she adds,no matter how much we work out,no matter how well we eat,we can't be in top physical shape unless we also get plenty of sleep.
1.The underlined part in Paragraph 1 means ______ .
A. To wake up the sleepers B. To draw people's attention
C. To serve as a morning call D. To declare the special day
2.From Paragraph 3 we can infer that ______ .
A. The thought of being healthier is not very attractive
B. Sleeping has nothing to do with one's expectations
C. Enough sleep is the guarantee of the appealing things
D. Spending more time on sleeping is a waste of time
3.What Jennifer Vriend said in the last paragraph implies that ______ .
A. People care little about sleeping B. Sleeping is not important
C. Lazy people tend to sleep long D. Sleeping is only part of our life
4.What is the purpose of the passage?
A. To talk about people's sleeping problems.
B. To provide an investigation result of sleeping.
C. To stress the function of sleeping at night.
D. To raise the awareness of enough sleeping.
高二英语阅读理解中等难度题查看答案及解析
March 21 has been declared World Sleep Day, a time to recognize and celebrate the value of sleep. Many sleep experts hope it will be a wake-up call.
According to a poll (民意调查)by the National Sleep Foundation, nearly 4 in 5 Americans don’t get as much sleep as they should during the workweek. On average, adults are thought to need at least eight hours of sleep a night, although some can manage with less and some won’t do well without more. But the survey found that, on workdays, only 21% of Americans actually get a full eight hours of sleep, and another 21% get less than six.
To many of us, the thought of spending more time sleeping is, well, a big yawn. On the other hand, the thought of being smarter, thinner, healthier and more cheerful has a certain appeal. And those are just a few of the advantages that can be ours if we consistently get enough sleep, researchers say. Also on the plus side: We’re likely to have better skin, better memories, better judgment, and, oh, yes, longer lives.
“When you lose even one hour of sleep for any reason, it influences your performance the next day,” says Dr. Alon Avidan, director of the UCLA Sleep Disorders Center.
A study published last year found the same to be true even of children. When kids aged 8 to 12 slept for just one hour less for four nights, they didn’t function as well during the day.
But sleeping has an image problem. “We see napping or sleeping as lazy,” says Jennifer Vriend, a clinical psychologist in Ottawa, Canada, and the leading author of the study with children. “We put so much emphasis on diet, nutrition and exercise. Sleep is in the back seat.” In fact, she adds, no matter how much we work out, no matter how well we eat, we can’t be in top physical shape unless we also get plenty of sleep.
1.The underlined part in Paragraph 1 means _____.
A. To wake up the sleepers
B. To draw people’s attention
C. To serve as a morning call
D. To declare the special day
2.From Paragraph 3 we can infer that _______
A. Being healthier is one of the advantages for us
B. Sleeping has nothing to do with one’s expectations
C. Spending more time on sleeping is a waste of time
D. Enough sleep is the guarantee of the appealing things
3.What Jennifer Vriend said in the last paragraph implies that _______.
A. Sleeping is an image problem
B. People care little about sleeping
C. Lazy people tend to sleep long
D. Sleeping is only part of our life
4.What is the purpose of the passage?
A. To talk about people’s sleeping problems.
B. To provide an investigation result of sleeping.
C. To arouse the awareness of enough sleeping.
D. To stress the function of sleeping at night.
高二英语阅读理解中等难度题查看答案及解析
March 21 is World Sleep Day. How’s your sleep recently?
The Chinese Medical Doctor Association asked 8,200 people in China about their sleep. More than 36.3 percent of them said they often sleep badly. The study also finds that many students have only 5 hours of sleep a day. According to the US National Sleep Foundation, teenagers need 8.5 to 9 hours of sleep every night.
What cuts into their sleeping time? Homework. Also, school starts early in the morning. But bad sleeping habits also play a role.
Do you like to have a look at your mobile phone before going to bed? The survey finds that 60 percent of people check their phones before they sleep. They read news, check their WeChat (微信)and micro blog messages, or chat with QQ friends.
It’s important for us to get enough sleep. If we can’t get enough sleep, we’ll feel sleepy and think slowly. And sleepy kids are often unhappy, says a study by the US National Foundation.
We can’t change our school time. But there are still ways to get better sleep. Stay away from soda, coffee and tea at night. They make it hard to sleep well. Leave your mobile phone and computer on your desk. Watch less TV.
103 Dates 枣
70 Mashed potatoes
56 Boiled potatoes
52 Orange juice
49 Chocolate bar
30 Whole milk
103 Dates 枣
70 Mashed potatoes
56 Boiled potatoes
52 Orange juice
49 Chocolate bar
30 Whole milk
1.How many hours of sleep do teenagers need every night according to the passage?
A. About 12 hours B. About 9 hours
C. About 4 hours D. About 5 hours
2.Many students can’t get enough sleep because _____.
A. they play sports too much and feel excited
B. they use mobile phones during the day time
C. they drink too much soda, coffee and tea at night
D. they have too much homework and bad sleeping habits
3.When people can’t sleep well, they may____.
A. feel sleepy and unhappy B. go to bed earlier next day
C. change their school time D. go to work late next day
4.In the passage if you want to get better sleep, you should___.
A. chat with your friends B. eat the right food
C. put your phone beside you D. be away from drinks like coffee
高二英语阅读理解中等难度题查看答案及解析
Celebrating sleep
World Sleep Day, observed on 21 March, was created to bring attention to the growing number of sleep problems worldwide. Sleep is a natural part of human life, but many people in the modern world ignore its importance. As a result, sleep problems are increasingly common.
In 2002, scientists at the University of Athens in Greece conducted a survey of over 35,000 people in 10 countries around the world, including China, Belgium and South Africa. Of the people that responded to the survey, 24 percent said that they did not sleep well, and based on their responses, 31.6 percent were diagnosed (诊断)with insomnia(失眠)and another 17.5 percent were diagnosed with borderline insomnia. In addition, 30.7 percent of survey respondents reported visiting a doctor for help with sleep problems and 11.6 percent said that they felt very sleepy during the day.
Overall, the survey found that ninny people suffer the effects of poor quality sleep, some examples of which are being unable to fall asleep and waking up in the middle of the night. The main factors causing these problems are pressure from school or work and a fast pace of life, but noise pollution and light pollution also interfere with sleep and contribute to poor quality sleep. The survey’s findings are particularly troubling because large numbers of people were found to have difficulty sleeping at night. The short-term effects of this are tiredness and trouble concentrating. If this happens for a long time, the risk of putting on weight and having a heart attack may increase.
There are many things you can do to improve the quality of your sleep. First, you should have regular sleep habits. Try to go to bed and wake up around the same time each day. You also need to make your bedroom a cool, dark, quiet place to sleep so that heat, light and noise do not disturb you. At night, you should also avoid things that contain caffeine, such as chocolate, coffee, tea and many soft drinks, as caffeine may keep you from sleeping.
Getting a good night's sleep is important for everyone. By following the advice above, you can rest better at night and work better during the day.
Title: Celebrating Sleep
Topic | Context |
World Sleep Day | Due to ignorance of the importance of sleep problems, people observe Mar. 21, World Sleep Day to bring (78)▲ to the problem. |
Responses of the survey | 1). Of 3, 5000 people in 10 countries in the world, there were 24 percent of the people saying they didn’t sleep well. 2). 31.6 percent were diagnosed with insomnia and another 17.5 percent were on the borderline of sleeplessness. 3). The (79) ▲ of the people feeling sleepy during the day is 11.6. 4) 30.7 percent reported (80) ▲ to a doctor for sleep problems. |
(76)▲ causing sleep problems & their consequences | 1).Under (81) ▲ from school or work, people may have sleep problems. 2). Noise or light pollution(82) ▲ to poor quality sleeps. 3).Sleepless people may easily (83) ▲ weight and have a heart attack. 4). Feeling fired and sleepy, people find it (84) ▲ to concentrate. |
(77) ▲ to take to improve sleep quality | 1). Have regular sleep habits. 2). Make your bedroom cool, dark and quiet. 3). Avoid things (85)▲ caffeine. |
高二英语阅读理解困难题查看答案及解析
Celebrating sleep
World Sleep Day, observed on 21 March, was created to bring attention to the growing number of sleep problems worldwide. Sleep is a natural part of human life, but many people in the modern world ignore its importance. As a result, sleep problems are increasingly common.
In 2002, scientists at the University of Athens in Greece conducted a survey of over 35,000 people in 10 countries around the world, including China, Belgium and South Africa. Of the people that responded to the survey, 24 percent said that they did not sleep well, and based on their responses, 31.6 percent were diagnosed with insomnia (失眠) and another 17.5 percent were diagnosed with borderline insomnia. In addition, 30.7 percent of survey respondents reported visiting a doctor for help with sleep problems and 11.6 percent said that they felt very sleepy during the day.
Overall, the survey found that many people suffer from the effects of poor quality sleep, some examples of which are being unable to fall asleep and waking up in the middle of the night. The main factors causing these problems are pressure from school or work and a fast pace of life, but noise pollution and light pollution also interfere with sleep and contribute to poor quality sleep. The survey’s findings are particularly troubling because large numbers of people were found to have difficulty sleeping at night. The shortterm effects of this are tiredness and trouble concentrating. If this happens for a long time, the risk of gaining weight and having a heart attack may increase.
There are many things you can do to improve the quality of your sleep. First, you should have regular sleep habits. Try to go to bed and wake up around the same time each day. You also need to make your bedroom a cool, dark, quiet place to sleep so that heat, light and noise do not disturb you. At night, you should also avoid things that contain caffeine, such as chocolate, coffee, tea and many soft drinks, as caffeine may keep you from sleeping.
Getting a good night’s sleep is important for everyone. By following the advice above, you can rest better at night and work better during the day.
Title: Celebrating Sleep
Topic | Content |
World Sleep Day | Owing to 1.________ of the importance of sleep, people celebrated World Sleep Day, bringing attention to the increasing problems of sleep. |
Responses of the survey | Of 35,000 people in 10 countries in the world, there were 24% of the people2._______ from sleeplessness. 31.6 % were diagnosed with insomnia and another 17.5% were on the edge of insomnia. The 3.________ of the people feeling sleepy during the day is 11.6. 30.7 % reported 4._______ to a doctor for sleep problems. |
5._______ causing sleep problems & their consequences | Under 6._______ from school or work, people may have sleep problems. Poor quality sleep also 7._______ from noise or light pollution. Feeling tired and sleepy, people have difficulty 8._______ on what they are doing. It is likely that sleepless people easily put on weight and have a heart attack. |
9._______ to take to improve sleep quality | Have regular sleep habits. Make your bedroom cool, dark and quiet. Avoid things 10._______ caffeine. |
高二英语其他题中等难度题查看答案及解析
阅读下面短文,根据所读内容在表格中的空白处填入恰当的单词。注意:每个空格只填一个单词。
Celebrating sleep
World Sleep Day, observed on 21 March, was created to bring attention to the growing number of sleep problems worldwide. Sleep is a natural part of human life, but many people in the modern world ignore its importance. As a result, sleep problems are increasingly common.
In 2002, scientists at the University of Athens in Greece conducted a survey of over 35,000 people in 10 countries around the world, including China, Belgium and South Africa. Of the people that responded to the survey, 24 percent said that they did not sleep well, and based on their responses, 31.6 percent were diagnosed (诊断)with insomnia(失眠)and another 17.5 percent were diagnosed with borderline insomnia. In addition, 30.7 percent of survey respondents reported visiting a doctor for help with sleep problems and 11.6 percent said that they felt very sleepy during the day.
Overall, the survey found that ninny people suffer the effects of poor quality sleep, some examples of which are being unable to fall asleep and waking up in the middle of the night. The main factors causing these problems are pressure from school or work and a fast pace of life, but noise pollution and light pollution also interfere with sleep and contribute to poor quality sleep. The survey’s findings are particularly troubling because large numbers of people were found to have difficulty sleeping at night. The short-term effects of this are tiredness and trouble concentrating. If this happens for a long time, the risk of putting on weight and having a heart attack may increase.
There are many things you can do to improve the quality of your sleep. First, you should have regular sleep habits. Try to go to bed and wake up around the same time each day. You also need to make your bedroom a cool, dark, quiet place to sleep so that heat, light and noise do not disturb you. At night, you should also avoid things that contain caffeine, such as chocolate, coffee, tea and many soft drinks, as caffeine may keep you from sleeping.
Getting a good night's sleep is important for everyone. By following the advice above, you can rest better at night and work better during the day.
Title: Celebrating Sleep
Topic | Context |
World Sleep Day | Due to ignorance of the importance of sleep problems, people observe Mar. 21, World Sleep Day to bring 1.________▲________to the problem. |
Responses of the survey | 1). Of 3, 5000 people in 10 countries in the world, there were 24 percent of the people saying they didn’t sleep well. 2). 31.6 percent were diagnosed with insomnia and another 17.5 percent were on the borderline of sleeplessness. 3). The 2. ________▲________ of the people feeling sleepy during the day is 11.6. 4) 30.7 percent reported 3. ________▲________ to a doctor for sleep problems. |
4.________▲________ causing sleep problems & their consequences | 1).Under 5. ________▲________ from school or work, people may have sleep problems. 2). Noise or light pollution6. ▲________to poor quality sleeps. 3).Sleepless people may easily 7. ▲________weight and have a heart attack. 4). Feeling fired and sleepy, people find it 8. ▲ to concentrate. |
9. ________▲________ to take to improve sleep quality | 1). Have regular sleep habits. 2). Make your bedroom cool, dark and quiet. 3). Avoid things 10.________▲________ caffeine. |
高二英语填空题中等难度题查看答案及解析
In recent decades, social isolation has been recognized as a major risk to our health and long life. It’s twice as bad for you as being overweight and nearly as bad as smoking. The rising number of people who say they are affected, across a wide range of ages, is shocking. In reality, you can suffer the ill effects of loneliness even if you are not socially isolated.
Comedian Robin Williams made a striking observation in 2014: “I used to think the worst thing in life was to end up all alone. It’s not. The worst thing in life is to end up with people who make you feel all alone.” Tracking large groups over time indicates that perceived(感知的)social isolation carries its own risk for morbidity(发病率)and mortality.
The perception of isolation—from others of being in the social aspect—is not only a cause of unhappiness, it also signals danger. Fish have evolved to swim to the middle of their group when predators(捕食者)approach, mice housed in social isolation show sleep disruptions and reduced slow-wave sleep and prairie voles(田鼠)isolated from their partners then placed in an open field explore their surroundings less and concentrate on avoiding predators.
These behaviours reflect an increased emphasis on self-preservation in the social aspect. For instance, fish on the edge of a school are more likely to be attacked by predators because they are easier to isolate and prey upon. Such observations reflect a more general principle that perceived social isolation in social animals activates neural(神经系统的), neuroendocrine (神经内分泌的)and behavioural responses that promote short-term self-preservation. However, these responses bring a cost for long-term health and well-being.
The range of harmful neural and behavioural effects of perceived isolation documented in adults include increased anxiety, hostility and social withdrawal; fragmented sleep and daytime tiredness; increased vascular resistance and changed gene expression and immunity; decreased impulse control; increased negativity and depressive symptoms; and increased age-related cognitive decline.
Sadly, to date, attempts to reduce loneliness have met with limited success. A series of randomized controlled trials showed that they had only a small effect. Among the four types of interventions(介人)examined, talking therapy that focused on inappropriate thought processes had the largest impact. Social skills training, social support and increased opportunities for social contact were much less effective.
1.What can we learn about social isolation from the first paragraph?
A. It exists mainly among adults.
B. More and more people are suffering it.
C. Its effect is more serious than smoking.
D. It’s the worst risk to our health and long life.
2.During perceived social isolation, animals will suffer bad health for ________.
A. focusing more on their own safety
B. being separated from their partners
C. adapting to the new surroundings
D. worrying about their lack of food
3.The fifth paragraph is mainly about ________.
A. causes of perceived isolation.
B. treatments for perceived isolation
C. bad effects of perceived isolation
D. the definition of perceived isolation
4.What is the most effective in helping suffers of perceived social isolation?
A. Giving them strong social support.
B. Communicate more and better with them.
C. Get them to attend some training courses.
D. Enlarge their circles of social network.
高二英语阅读理解中等难度题查看答案及解析
In recent decades, social isolation has been recognized as a major risk to our health and long life. It’s twice as bad for you as being overweight and nearly as bad as smoking. The rising number of people who say they are affected, across a wide range of ages, is shocking. In reality, you can suffer the ill effects of loneliness even if you are not socially isolated.
Comedian Robin Williams made a striking observation in 2014: “I used to think the worst thing in life was to end up all alone. It’s not. The worst thing in life is to end up with people who make you feel all alone.” Tracking large groups over time indicates that perceived(感知的)social isolation carries its own risk for morbidity(发病率)and mortality.
The perception of isolation—from others of being in the social aspect-is not only a cause of unhappiness, it also signals danger. Fish have evolved to swim to the middle of their group when predators(捕食者)approach, mice housed in social isolation show sleep disruptions and reduced slow-wave sleep and prairie voles(田鼠)isolated from their partners then placed in an open field explore their surroundings less and concentrate on avoiding predators.
These behaviours reflect an increased emphasis on self-preservation in the social aspect. For instance, fish on the edge of a school are more likely to be attacked by predators because they are easier to isolate and prey upon. Such observations reflect a more general principle that perceived social isolation in social animals activates neural(神经系统的), neuroendocrine(神经内分泌的)and behavioural responses that promote short-term self-preservation. However, these responses bring a cost for long-term health and well-being.
The range of harmful neural and behavioural effects of perceived isolation documented in adults include increased anxiety, hostility and social withdrawal; fragmented sleep and daytime tiredness; increased vascular resistance and changed gene expression and immunity; decreased impulse control; increased negativity and depressive symptoms; and increased age-related cognitive decline.
Sadly, to date, attempts to reduce loneliness have met with limited success. A series of randomized controlled trials showed that they had only a small effect. Among the four types of interventions(介入)examined, talking therapy that focused on inappropriate thought processes had the largest impact. Social skills training, social support and increased opportunities for social contact were much less effective.
1.What can we learn about social isolation from the first paragraph?
A. It exists mainly among adults.
B. It’s the worst risk to our health and long life.
C. Its effect is more serious than smoking.
D. More and more people are suffering it.
2.During perceived social isolation, animals will suffer bad health for ________.
A. focusing more on their own safety B. being separated from their partners
C. adapting to the new surroundings D. worrying about their lack of food
3.The fifth paragraph is mainly about ________.
A. causes of perceived isolation. B. treatments for perceived isolation
C. bad effects of perceived isolation D. the definition of perceived isolation
4.What is the most effective in helping suffers of perceived social isolation?
A. Giving them strong social support.
B. Communicate more and better with them.
C. Get them to attend some training courses.
D. Enlarge their circles of social network.
高二英语阅读理解困难题查看答案及解析
Tobacco has long been recognized as a huge health threat. It is known to cause lung and heart problems to many long-term users. According to the World Health Organization, 3,000,000 people die early each year because of tobacco use, including 890,000 deaths from second-hand smoke exposure.
E-cigarettes, an alternative (替代品) to smoking, have become popular. Also known as vaporizers (汽化器), they are electric devices that heat liquid nicotine into a vapor that can he taken in. This vapor is less harmful to inhale than smoke. For example, it does not produce tar (焦油), which can build up in a smoker’s lungs. Inhaling vapor - called vaping - is not without its own risks, however. Exposure to nicotine during youth can lead to addiction and cause long-term harm to brain development. The vapor may also contain harmful things. The Center for Disease Control has linked vaping to more than 805 cases of lung disease and 12 deaths so far in the US.
Vaping has greatly increased in popularity in the US, especially among teenagers. About 37 % of US high school seniors were reported vaping in 2018, up from 28% the year before, Harvard Health Publishing reported. Michael Blaha, a researcher at the Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, listed 3 reasons that contributed to vaping’s popularity among young people. First, many teens eve that vaping is less harmful than smoking. Second, ecigarettes have a lower per-use cost than traditional cigrattes. Finally, e-cigarettes come in a wide range of sweet flavors, like apple pie and watermelon.
Blaha is most concerned that more teenagers are taking up vaping as a habit. “It’s one thing if you change from cigarette smoking to vaping. It’s quite another thing to start up nicotine use with vaping. And, it often leads to using traditional tobacco products down the road,” he said.
Governments around the world the divided about vaping. 39 countries and regions have banned the sale of e-cigarettes, according to the Global State of Tobacco Harm Reduction 2018. Last September, US President Donald Trump said the use of e-cigarettes might be negatively affecting young people and that it should be kept off the market until proved harmless.
1.The underlined word “inhale” in Paragraph 2 probably means “__________”.
A.blow away B.spread out
C.give off D.breathe in
2.In what way are e-cigarettes different from traditional tobacco products?
A.E-cigarettes do not produce tar.
B.E-cigarettes are not bad to smokers’ health.
C.E-cigarettes are less likely to cause nicotine addiction.
D.E-cigarettes do more harm to smokers’ brains than their lungs.
3.Why is vaping popular with young people according to Blaha?
A.Vaping is allowed at school.
B.Vaping makes them look cool.
C.They like the liquid taken from fruits.
D.They think it’s safer and cheaper than smoking.
4.What can we learn from Blaha’s words in Paragraph 4?
A.Those who smoke e-cigarettes tend to smoke tobacco later.
B.Vaping is more likely to attract teenagers than older people.
C.It usually takes a long time for smokers to enjoy e-cigarettes.
D.E-cigarettes should be encouraged to replace traditional tobacco products.
高二英语阅读理解中等难度题查看答案及解析
Limiting kids' recreational(消遣) screen time to less than two hours a day, along with enough sleep and physical activity, is associated with improved cognition(认知), according to a study published in The Lancet Child & Adolescent Health.
The study included about 4,500 US children aged 8 to 11 and measured their habits against the Canadian 24-Hour Movement Guidelines for Children and Youth. It found that 51% of the children got the recommended(建议) nine to eleven hours of uninterrupted sleep per night, 37% met the recreational screen time limit of two hours or less per day, while 18% met the physical activity recommendation of at least 60 minutes of accumulated physical activity a day. Only 5% of the children in the study met all three recommendations; 30% met none at all.
The researchers found that as each recommendation was met by a participant, there was a positive association with global cognition, which includes memory, attention, processing speed and language. Those who met all three had the most "superior" global cognition, followed by those meeting the sleep and screen time recommendation and finally the screen time recommendation alone, according to the study.
Other organizations, such as the American Academy of Pediatrics have guidelines in place to help with the management of children's screen time. The organization suggests putting realistic rules or limits in place for how long your children are on their screens, knowing who they are talking to and what they are doing. The amount of recommended screen time depends on the age of the child. Besides, parents should also make sure to encourage physical activity and have bedroom rules such as creating "tech-free zones".
1.Who are the target readers of this passage?
A. Researchers. B. Teachers.
C. Parents. D. Children.
2.What is the main idea of this passage?
A. A study on children’s screen time is published.
B. US children fail to meet movement guidelines.
C. Organizations are concerned about children’s cognition.
D. Limitation on children's screen time is linked to better cognition.
3.According to the passage, which of the following might contributes least to cognition?
A. Screen time limit. B. Sleep hours.
C. Physical activity time. D. Sleep hours and screen time limit.
4.Why does the American organization suggest creating "tech-free zones”?
A. To make sure children have enough physical playtime.
B. To make sure children have enough sleep time.
C. To make sure children have recreational time.
D. To protect children against radiation.
高二英语阅读理解困难题查看答案及解析