Those who spend more pre-bedtime hours using the Internet or watching television are more likely to report insufficient sleep, even though they sleep almost as long as people spending fewer pre-bedtime hours in front of a computer or television screen, survey findings show.
“While many people use electronic media, say, the Internet, it should be noted that the longer media use before sleep can trigger (self-perceived) insufficient sleep,” lead researcher Dr Nakamori Suganuma, of Osaka University, Japan, told the reporter.
He and colleagues obtained data on self-perceived sleep problems and the use of electronic media prior to bedtime from 5,875 altogether Japanese respondents in two separate Internet-based surveys. Their findings are published in Sleep and Biological Rhythms.
Nearly half of the respondents associated their problem with electronic media use before bedtime. Longer electronic media users were also more likely to report insufficient sleep.
“Overall, 29% of light users (less than 1.5 hours) listed electronic media use as a possible cause of their insufficient sleep. By comparison, 40% of medium users (1.5 to 3 hours) and 54% of heavy users (more than 3 hours) said the same.
However, longer Internet and television use before bedtime did not correlate with less actual sleep.
While heavy users averaged about 3 more hours in front of computer or television screens than light users, the heavy users averaged only about 12 minutes less pre-workday sleep time than light users.
Notably, Suganuma said, "Internet use affected self-perceived insufficient sleep more than TV watching not only in younger Internet users but also in middle-aged or aged Internet users."
Up to 38% of the respondents listed accessing the Internet far into the night as a possible cause for their sleep disturbance, while about 25% said watching television far into the night caused it.
The findings suggest that while heavy computer and television use before bedtime has a small effect on sleep duration, it may have a more significant effect on "sleep demand and sleep quality," Suganuma notes.
【小题1】 Heavy computer and television user before bed time are more likely to be______ than light ones.
| A．energetic | B．happy | C．sleepy | D．clever |
| A．Heavy computer and television user before bed time have less sleeping time than light ones. |
| B．Heavy computer and television user before bed time have worse sleep than light ones. |
| C．Those suffering insufficient sleep spend less time in using internet than in watching TV. |
| D．Spend less time in watching TV or surfing the internet, and you will have a better sleep. |
| A．be far away from media. |
| B．watch TV rather than use internet |
| C．cut down late-night Internet and TV |
| D．Stop late-night internet and TV |
| A．have any connection with | B．make a friend with |
| C．share the opinion with | D．in accordance with |
【小题1】C
【小题2】B
【小题3】C
【小题4】A
解析试题分析：调查显示，睡前长时间上网或看电视的人称自己睡眠不足的几率更大，即使他们的睡眠时间与在睡前上网或看电视时间较短的人一样多。
【小题1】细节题：从第一段的句子：Those who spend more pre-bedtime hours using the Internet or watching television are more likely to report insufficient sleep, even though they sleep almost as long as people spending fewer pre-bedtime hours in front of a computer or television screen,可知睡觉前长时间用电脑，看电视的人会比时间短的人睡眠不足，所以会觉得困，选C
【小题2】细节题：从第四段的句子：Nearly half of the respondents associated their problem with electronic media use before bedtime. Longer electronic media users were also more likely to report insufficient sleep.可知睡觉前长时间使用电脑，电视的人睡眠很差，选B
【小题3】推理题：从最后一段的句子：The findings suggest that while heavy computer and television use before bedtime has a small effect on sleep duration, it may have a more significant effect on "sleep demand and sleep quality,"可知睡觉前长时间使用电脑电视会影响睡眠质量，所以作者 是想建议读者减少熬夜上网和看电视。选C
【小题4】猜词题：从最后一段的句子：The findings suggest that while heavy computer and television use before bedtime has a small effect on sleep duration,可知睡觉前长时间使用电脑电视和实际的睡眠少没什么关系，选A
考点：考查健康类短文
科学实验活动册系列答案科目：高中英语 来源： 题型：阅读理解
What do former American president Bill Clinton and rock musician Pete Townshend have in common.'? Both men have hearing damage from exposure(暴露，接触) to loud music, and both now wear hearing aids（助听器） as a result. As a teenager, Clinton played saxophone in a band. Townshend, who has the more severe hearing loss, was a guitarist for a band called the Who. He is one of the first rock musicians to call the public's attention to the problem of hearing loss from exposure to loud music.
Temporary（暂时） hearing loss can happen after only 15 minutes of listening to loud music. One early warning sign is when your ears begin to feel warm while you listen to music at a rock concert or through headphones. One later is that an unusual sound or a ringing is sometimes produced in your head after the concert.
"What happens is that the hair cells in the inner ear are damaged, but they're not dead," says physician and ear specialist Dr. Sam Levine. According to Dr. Levine, if you avoid further exposure to loud noise, it's possible to recondition the cells（细胞） somewhat. However, he adds, "Eventually, over a long period of time, hair cells are permanently damaged." And this is no small problem.
What sound level is dangerous? According to Dr. Levine, regular exposure to noise above 85 decibels (分贝) is considered dangerous. The chart below offers a comparison of decibel levels to certain sounds. Here's another measurement you can use. If you're at a rock concert and the music is so loud that you have to shout to make yourself heard, you' re at risk for hearing loss. That's when wearing protective devices such as earplugs becomes critical.
The facts are pretty frightening. But are rock bands turning down the volume.'? Most aren't. "Rock music is supposed to be loud," says drummer Andrew Sather."I wouldn't have it any other way. And neither would the real fans of rock. "
Continued exposure to loud music and the failure to wear earplugs can lead to deafness, according to Dr. Levine. He states, "There's no cure for hearing loss. Your ears are trying to tell you something. That ringing is the scream of your hair cells dying. Each time that happens, more and more damage is done. "
| Levels of Common Noises Normal conversation 50 — 65 dB Food blender 88 dB Jet plane flying above a person standing outside 103 dB Rock band during a concert 110 — 140 dB |
| A．loud music is a major cause of hearing loss |
| B．famous people may have hearing problems |
| C．teenagers should stay away from school bands |
| D．the problem of hearing damage is widely known |
| A．not to be seen | B．to fill with sound |
| C．to become larger in size | D．to make good again |
| A．a list of harmful sounds |
| B．the effect of rock concerts |
| C．the noise levels of sounds |
| D．relationship between daily activities and hearing loss |
| A．When your ears feel warm, your hair cells are dead. |
| B．Drummer Andrew Sather gives good advice. |
| C．Many are at the risk of losing hearing. |
| D．Doctors know how to deal with hearing loss. |
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科目：高中英语 来源： 题型：阅读理解
Imagine you are doing this reading in this text on the computer; what else are you doing? Maybe you’re eating a sandwich or drinking a cup of Starbucks. Should you eat while reading?
There aren’t many believable numbers, but we do know the number of people who eat while sitting in front of some type of screen is growing. A recent study found that 33 percent of families always have the TV on during meal times and another 27 percent people have it on at least half the time. Another 10 percent may be texting, emailing or talking on a cell phone while eating.
Any type of these behaviors is bad, considering the following evidence:
A Canadian study found that children who watch more than three hours of cartoons a day are 50 percent more likely to be fat than children who watch fewer than two hours. The researchers concluded that more than 60 percent of overweight incidents can be connected with screen watching too much.
A three-week study found that adults who usually play with smartphones less burned 119 more calories per day.
One Chicago researcher found that people eat more potato chips while reading online than when they have the laptop turned off.
There has been very little investigation(调查) into eating with your eyes staring at a screen or reading a book, but it is likely that his mindless eating is related to weight gain. Simply speaking, your brain has no idea what is going on with your mouth because it is occupied by other things. You don’t notice how full your stomach is, and you often don’t even notice the taste or the act of chewing and swallowing, as a result of which, developing an adapted dietary habit is a must.
【小题1】The author answers the question raised in the first paragraph with ________.
| A．stories and explanations | B．examples and investigations |
| C．an argument and evidence | D．facts and descriptions |
| A．Being focused while eating is a good way to have a good figure. |
| B．Adults’ weight is not affected by their eating habits. |
| C．There exist many investigations into eating while reading. |
| D．This text must be found on a website. |
| A．How Should You Lose Weight? |
| B．Should You Do Other Things While Eating? |
| C．Healthy and Unhealthy Eating Habits |
| D．TV and Eating |
| A．Express healthy eating ways. |
| B．Give more useful investigations into eating. |
| C．Describe the study about the old who watch less TV while eating. |
| D．Tell the proper ways to watch TV. |
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科目：高中英语 来源： 题型：阅读理解
Putting in water fountains (饮水器) at schools, and teaching children about the health benefits of water, could reduce their risk of getting extra pounds, reports a new study that is published in the latest issue of the journal Pediatrics.
The findings are based on a survey in 32 elementary schools of two German cities, Dortmund and Essen. The researchers, led by Rebecca Muckelbauer, a nutritionist(营养学家) at the Research Institute of Child Nutrition Dortmund, weighed about 3,000 children, and asked them about their beverage consumption(饮料消费量).
At the beginning of the school year, the experts had water fountains added to 17 of the schools. The scientists also worked with teachers to carry out educational programs that promote the benefits of drinking water. In contrast to schools in the United States, there are very few schools in Germany that have water fountains.
At the beginning of the study, there were no big differences in the number of overweight children in the different groups. But by the end of the school year, children in the schools with water fountains were 31 per cent less likely to gain extra pounds, compared to kids who went to other schools, where water drinking was not encouraged.
Children in the schools with fountains increased their water consumption from about 3 up to 4 glasses a day, while those in the other schools continued to drink an average of 3 glasses. Over the research, the number of overweight kids upped from 384 to 385 out of 1,641 at the schools with water fountains. In comparison, the number of overweight kids at the other schools increased from 339 to 364 out of 1,309, Dr. Muckelbauer said.
The experts cannot make any final conclusions and explain why the students who were encouraged to drink water were less likely to gain extra weight. Dr. Muckelbauer noted that according to a few other studies, drinking of water increases the rate at which calories are burned, while some other research suggested that water may temporarily decrease appetite (食欲).
【小题1】What do we know about the survey from the passage?
| A．The teachers were also encouraged to drink water. |
| B．The students surveyed were all overweight. |
| C．It surveyed children in the countryside. |
| D．It lasted for a whole school year. |
| A．Drinking water certainly decreases appetite. |
| B．Further research is needed to confirm the finding. |
| C．The experts will encourage all the students to drink water. |
| D．Why students drinking more get less pounds will be clear soon. |
| A．Schools with water fountains |
| B．Drink more water and become thinner |
| C．Water fountains at schools help kids stay thin |
| D．Water consumption at some German schools |
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科目：高中英语 来源： 题型：阅读理解
New research suggests that speaking more than one language may delay different kinds of dementia(痴呆), that is the loss of mental ability. In fact, researchers say, speaking two languages appears to be more important than the level of education in defending against dementias.
A study in India examined the effect of knowing more than one language in delaying the first signs of several dementias. Researchers studied nearly 650 people whose average age was 66. 240 of those studied suffered from Alzheimer's, the most common form of mental decline(下降). 391 of the subjects spoke two or more languages. Researchers found the dementias began about four-and-a-half years later in those who spoke two languages compared to those who spoke only one language. The level of education had no effect on the age at the first sign of dementia.
Thomas Bak, from the Center of Cognitive Aging at the University of Edinburgh in Scotland, who helped to organize the study, suggests that individuals who speak more than one language train their brains by moving back and forth between different words and expressions. He also believes this effort improves what scientists called executive(执行的) functioning, which often weakens in people with dementias. He states that researchers found there was no extra gain in speaking more than two languages.
Mr Bak says it does not appear important whether you learn another language at a young age or later in life. It's not something that “you missed the boat when you do not do it as a baby.” It is something that is still quite useful and powerful when you do it as an adult.
【小题1】The finding of the study is that________.
| A．learning more than one language can cure dementias |
| B．speaking two languages may delay kinds of dementias |
| C．the level of education matters in defending against dementias |
| D．people who suffer from dementias will lose mental ability |
| A．people who were studied in the study |
| B．notices that were put on about the study |
| C．questions that were asked in the study |
| D．methods that were used in the study |
| A．the more languages one speaks, the less chance of getting dementias |
| B．people’s executive functioning often strengthens with age |
| C．when you learn one more language makes no difference |
| D．it is much easier to learn one more language at a young age |
| A．a research plan | B．a health magazine |
| C．a book review | D．a business magazine |
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科目：高中英语 来源： 题型：阅读理解
How often do you go on holiday? Going on holiday makes you feel good while you're there－you gain the health benefits for months, new research shows.
Jetting off to exotic destinations such as the Maldives cuts your blood pressure, helps you sleep better and bounce back from stress, it found. The benefits last at least a fortnight longer than the vacation and can be felt for months in some cases where it is claimed. Experts say workers should always take their full holiday entitlement each year－as many as one in three don't－to get the benefits.
The study compared key health markers in holidaymakers visiting Thailand, Peru or the Maldives, with people who stayed at home and continued working. The average blood pressure of those on holiday dropped by 6% while the workers saw their blood pressure rise by 2% over the same period. The sleep quality of holiday-makers improved by 17% while that of the non-holidaymakers deteriorated by 14%.
The study also found the ability of vacationers to recover from stress—known as the stress-resilience test－improved by 29%. There was a 71% fall in stress resilience scores among workers. Test showed a fall in blood glucose levels, reducing the risk of diabetes, trimmer waistlines and enhanced mood and energy levels, with the effects sustained for at least 2 weeks after returning home.
The Holiday Health Experiment was conducted by tour operator Kuoni and Nuffield Health, the UK's largest healthcare charity.
【小题1】 The author intends to tell us that _____.
| A．it is best to go to foreign countries like Maldives. |
| B．we had better go on holiday for the benefits of health |
| C．we have to go on holiday as much as possible |
| D．you'll certainly get depressed if you don't go on holiday |
| A．Two thirds | B．17% | C．One third | D．A quarter |
| A．remained | B．rose | C．improved | D．worsened |
| A．Holiday makers are more adaptable than non-holidaymakers. |
| B．The result of the study is mostly based on the description from the people involved. |
| C．The further you go, the better you benefit. |
| D．Most people like to stay at home during the holiday. |
| A．A Holiday Health Experiment | B．Key Health Markers in Holidaymakers |
| C．Health Benefits from Holiday | D．Health Problems of Having Holiday |
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科目：高中英语 来源： 题型：阅读理解
Why are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation in your body.
Raw and whole foods are usually digested more efficiently than cooked and refined foods. When we cook foods, we destroy the natural enzymes (酶) that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is obesity（肥胖）. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive tract（消化道）, where it becomes increasingly acidic. To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.
Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat. Processed foods also upset the digestive cycle. The body will either identify these foods as allergens（过敏原） and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism (新陈代谢) becomes inactive, and the result is weight gain and obesity.
The accumulation of acid in the digestive tract makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common.
To stop this vicious circle in its tracks, people need to consume food and supplements that will neutralize（中和）the acid already accumulated in body. Eating the right types of raw and whole foods can help. It’s also important to restore your enzyme balance. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself, you need to take an active approach.
【小题1】 It can be inferred from Para. 2 that __________.
| A．foods with natural enzymes help people keep fit |
| B．we’d better be cautious about raw and whole foods |
| C．it is essential for people to protect their vital organs |
| D．giving up cooked and refined foods is a new lifestyle |
| A．destroy body’s cells | B．may lead to obesity |
| C．are difficult to digest | D．stop body’s metabolism |
| A．To warn people of the problem of obesity. |
| B．To advocate eating more raw and whole foods. |
| C．To inform people of the harm of processed foods. |
| D．To tell the differences between raw and processed foods. |
| A．Different causes of acid accumulation. |
| B．Correct ways to cook raw foods. |
| C．Suitable types of raw and whole foods. |
| D．Active approaches to avoid acid. |
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科目：高中英语 来源： 题型：阅读理解
Smaller than your fist, your healthy heart just goes on and on. It will beat more than 60 times a minute for 70 years or more. That’s something that most of us take for granted. But it’s an amazing fact.
60 times a minute for 60 minutes is 3,600 times. What physical thing can most of us do 3,600 times in one hour? Blink? Maybe. Tap our fingers on the desk? No. Jump up and down? Certainly not! But our heart keeps beating, hour after hour. Every day, it pumps almost 2,000 gallons of blood through our blood vessels(血管). It takes you about five years to drink 2,000 gallons of water.
And, unlike your knees or your back, your heart does all this work without ever complaining（抱怨）! You never know that it’s even there. Your heart is such a reliable “silent partner” that people forget to care for it. For many, the first indication（迹象）that their heart isn’t working properly is a serious heart illness! Over 650,000 Americans die of some kind of heart disease every year. Cancer kills 560,000, stroke kills 143,000, and accidents kill 118,000 Americans annually.
Like accidental deaths, many heart disease-related deaths can be avoided if people simply follow the advice of the experts. Unfortunately, most people seem to listen to a little voice in their head that says, “It won’t happen to me. ” So these people keep on smoking and drinking. They continue to eat too much meat. And their only “exercise” is getting off the sofa to get something out of the fridge. Please follow the following steps to keep your heart healthy.
【小题1】The text is most probably taken from a (an) __________.
| A．art book | B．science fiction |
| C．healthy magazine | D．psychology book |
| A．Blink. | B．Jump. | C．Finger tap. | D．Heart beat. |
| A．Accidents can be the biggest “killer” in America every year. |
| B．In America, heart disease causes the highest death rate annually. |
| C．Cancer causes more threat than any other diseases for Americans. |
| D．Recently, nobody died of stroke or heart disease in America. |
| A．our healthy hearts work with many complains as our knees. |
| B．our healthy hearts can pump 3,600 gallons of blood everyday. |
| C．our healthy hearts are smaller than our fists. |
| D．our healthy hearts can beat 60 times in one hour. |
| A．Some tips for keeping a healthy heart. |
| B．Some suggestions for avoiding accidental deaths. |
| C．Some reasons for doing regular exercise. |
| D．Some exercise for keeping a healthy lifestyle. |
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