A new study has found that social media could be affecting the sleep of young adults. The study is a project of researchers at the University of Pittsburgh’s School of Medicine.
They found that young people who often use social media are more likely to suffer from sleep disorders than those who use social media less. The researchers say doctors should ask young adults about their use of social media when treating sleep problems.
“This is one of the first piece of evidence that social media use really can affect your sleep,” said Jessica C. Levenson, the lead author of a report on the study. The researchers set out to examine the connection between social media and sleep among young adults.
The researchers wanted to find out how often young people used social media sites like Facebook. For the study, they gave questionnaires to nearly 1,800 adults, aged 19 to 32. On average, members of the study group used social media sites one hour a day. They also visited various social media accounts 30 times per week.
Thirty percent of the study’s participants(参与者)reported having serious problems with sleeping. Those people who used social media a lot were three times more likely to have a sleep disorder. And those who spent the most time on social media were twice as likely to suffer from sleep problems.
Researchers say social media can influence sleep in a number of ways. People can lose sleep by staying up too late looking at social media. Sensitive issues argued about on social media can cause excitement. Using an electronic device can disturb a body’s natural sleep rhythms because of the light coming from screens. The researchers note that in some cases, young adults who have a hard time sleeping may use social media to help them fall asleep, which may in turn lead to more problems sleeping because social media involve screen time that is interesting and can keep you awake.
1. What do the researchers suggest on a doctor’s treating young adults’ sleep problems?A.Knowing their living environment. |
B.Asking about the time they spent on social media |
C.Asking what social media sites they use. |
D.Inquiring about their sleeping habits. |
A.Less than one-third of the participants in the study have problem sleeping. |
B.Doctors don’t think there is any way to cure sleeping problems caused by social media use. |
C.Social media use has something to do with young adults’ sleeping problems. |
D.Participants who like using Facebook are less likely to suffer from sleeping problems. |
A.one will stay up late | B.one can get excited. |
C.one’s sleep rhythms will be disturbed | D.one can fall fast asleep |
A.Social media have affected young adults’ sleep. |
B.How to deal with sleep problems. |
C.Social media takes up so much time. |
D.Sleep problems mainly result from social media. |
A.inform | B.encourage | C.persuade | D.advise |
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【推荐1】On August 29th,Elon Musk, the boss of Tesla, an electric-car maker, announced that some of his customers would find that their cars had suddenly developed the ability to drive farther on a single battery charge. Like many modern vehicles, Mr.Musk's products are best thought of as Internet-connected computers on wheels. The cheaper models in Tesla' line-up have parts of their batteries disabled by the car’s software in order to limit their range. At the tap of a keyboard in Palo Alto, the firm was able to remove those restrictions and give drivers temporary access to the full power of their batteries.
Mr. Musk's computerized cars are just one example of a much broader trend. As computers and connectivity become cheaper, it makes sense to bake them into more and more things that are not, in themselves, computers creating an “Internet of things”, or IoT. It is a slow revolution that has been gathering pace for years, as computers have found their way into cars, telephones and televisions. But the transformation is about to speed up. One forecast is that by 2035 the world will have a trillion connected computers, built into everything from food packaging to bridges and clothes.
Such a world will bring many benefits.Consumers will get convenience. Amazon's Ring smart doorbells, for instance, come equipped with motion sensors(运动传感器) and video cameras. Working together, they can also form what is, in effect, a private CCTV(closed circuit television) network, allowing the firm to offer its customers a“digital neighborhood-watch”scheme and pass any interesting video along to the police.
Business will get efficiency, as information about the physical world that used to be temporary and uncertain becomes concrete and analyzable. Connected cows can have their eating habits and vital signs tracked in real time, which means they produce more milk and require less medicine when they fall ill. Such gains are individually small but, mixed again and again across an economy, they are the raw material of growth potentially a great deal of it.
In the long term, though, the most noticeable effects of the IoT will be on how the world works. One way to think of it is to regard it as the second phase of the Internet. Ever, more companies will become tech companies; the Internet will become widespread. As a result, a series of unsolved arguments about ownership, data, competition and security will spill over from the virtual world into the real one.
1. Why does the author mention Elon Musk?A.To tell a story about his car. |
B.To introduce the topic. |
C.To inform readers of his Tesla. |
D.To explain batteries on electric Cars. |
A.It is under connection. |
B.It is getting computerized. |
C.It is getting widespread use. |
D.It is connecting computers. |
A.It will bring convenience and efficiency. |
B.It can help upload videos onto the Internet. |
C.It can save cows from being ill. |
D.It will bring small gains. |
A.The evolution of the IoT. |
B.Applying the IoT to the virtual world. |
C.Its main use in tech companies. |
D.Its effects on the real world. |
【推荐2】Technoference (科技入侵) is defined as everyday interruptions (打扰) in face-to-face interactions because of technological devices. Studies showed that parents use devices for nine hours per day on average. Smartphones are often used during family activities such as meals, playtime, and bedtime—all important times involved in shaping a child’s emotional well-being. When parents are on their devices, they have fewer conversations with their children, and pay less attention to them.
In one study, 172 two-parent families with a child aged 5 years or younger answered online questionnaires about family relationships. Participants showed how often different devices interrupted their activities with their children.
They rated their child’s behavior, such a show often they got upset or how easily their feelings were hurt. The parents also reported their own levels of stress and depression (沮丧), the support they received from their partners, and their children’s screen media use.
In almost all cases, devices were part of parent-child interactions during the day. Technology may serve as a way for parents to deal with difficult child behavior. However, it has its drawbacks.
Electronic device use means parents can’t provide meaningful emotional support and positive feedback to their children, which causes behavior such as crying. But this adds to parents’ stress levels. Parents are likely to spend more time with their technological products, and the cycle continues.
“These results showed that relationships between parent technoference and child behavior influence each other over time,” said McDaniel. “Parents who have children with behavioral problems become more stressed, which may lead to them using technology more, which in turn may contribute to more problems with their children.”
So, it seems like the best solution to a difficult relationship between a parent and their child would be to simply spend more time with each other, and less time on their smartphones or computers.
1. What do the first paragraph tell us about “technoreference”?A.It makes life more convenient. |
B.It stops people from thinking independently. |
C.It brings children more leisure activities at home. |
D.It affects communication among family members. |
A.Answer some questions about their family relationships. |
B.Use devices together with their children for several hours. |
C.Observe how their children use technological devices daily. |
D.List the benefits and problems of using technological devices. |
A.Effects. | B.Disadvantages. | C.Benefits. | D.Functions. |
A.Have more face-to-face quality time with their children. |
B.Keep relaxed when their children use electronic devices. |
C.Play with technological devices together with their children. |
D.Encourage their children to spend more time playing outside. |
【推荐3】Two years ago, Microsoft sank a data centre off the coast of Orkney in a wild experiment. That data centre has now been retrieved from the ocean floor, and Microsoft researchers are assessing how it has performed, and what they can learn from it about energy efficiency. Their first conclusion is that the container packed with servers(服务器)had a lower failure rate than a conventional data centre. When the container was pulled out of the seabed around half a mile offshore after being placed there in May 2018, just 8 out of the 855 servers on board had failed, which compares very well with a conventional data centre.
As more and more of our data is stored in the cloud, there is growing concern about the vast energy demands of data centres. This experiment was an attempt to learn broader lessons about energy efficiency in cloud computing(云计算). All of Orkney’s electricity comes from wind and solar power, but there were no issues in keeping the underwater data centre supplied with power. “We have been able to run really well on what most land-based data centres consider an unreliable electric-power network,” says Spencer Fowers, one of members in the technical team.
Underwater data centres might sound like an unusual idea, but David Ross, who has been a consultant to the data centre industry for many years, believes the project has great potential. He uses examples where it would be beneficial, such as organisations facing a natural disaster or a terrorist attack. “You could effectively move something to a more secure location without having all the high costs of constructing a building. It’s flexible and cost-effective,” he says.
Microsoft is cautious about saying when an underwater data centre might be a commercial product, but the company is confident that the experiment has proved the idea has value. “We think that we are past the point where this is a science experiment,” says Ben Cutler. “Now it’s simply a question of what do we want to engineer — would it be a little one, or would it be a large one?”
1. What did Microsoft researchers find according to paragraph 1?A.The advantage of the underwater data centre. |
B.The safety of the traditional data centre. |
C.The novel feature of the traditional data centre. |
D.The computing power of the underwater data centre. |
A.To make Orkney’s environment better. |
B.To explore a greener way of data storage. |
C.To display the strength of cloud computing. |
D.To improve the energy efficiency of computers. |
A.It is not practical due to high costs. |
B.It protects people from different disasters. |
C.It faces an uncertain future in the data centre industry. |
D.It outweighs the traditional data centres in several aspects. |
A.Seek cooperation with other engineers. |
B.Decide the scale of underwater data centres. |
C.Perform another experiment on cloud computing. |
D.Design marketing strategy for underwater data centres. |
【推荐1】When you bite into a loaf of bread, you’re eating a little slice of history, with roots that stretch back for millennia. But this basic and important food, which has dominated tables for thousands of years, is in a dangerous decline.
According to a study, 32 percent of the purchased bread is being dumped in the UK. And in France-a country whose breads are internationally well-known-young people are cutting 30 percent less than a decade ago.
Traditionally, bread has been a cornerstone of many cultures around the world. Wherever wheat was grown, bread was sure to follow. Its roles were just as varied as its origins. Bread could be used as an appetizer, a palate(味蕾)cleaner, a post-meal palate cleaner-even as an entire meal itself. As its popularity grew, so too did its symbolic value, Christianity adopted bread as are presentation of Christ during religious ceremonies. “Breaking bread” with someone became a common symbol of friendship. The French even used to bring baguettes(法棍面包)home as a symbol of love to the family.
But recently, the world’s love with bread came to fade. Some guess that the fast pace of modern life is changing people’s eating habits. Others believe it’s a reflection of health concerns. Bread is rich in complex carbobydrates(碳水化合物), a fact that could alienate anyone who practices a low-carbon or gluten-free(不含麸质物的)lifestyle.
The shift against bread is also associated with its mass production. Extra yeast(酵母)and additives are added to the dough, to extend its shelf life. In the process, bread ends up being blanched(变白)and nutritious stripped.
But dedicated bakers around the world have rushed forward to rescue bread’s good reputation. They say no to mass production-in-favor-of-baking-flavorful loaves the old-fashioned way. British baker Mark Newman is a good example. His loaves take up to 18 hours from start to finish. “In terms of nutrition and eating satisfaction, a handmade loaf of real bread and mass-produced bread are completely different products.” he said. Artisanal bakers hope to build on the popular enthusiasm to grow their industry. With a little luck-and some fresh, whole grains-bread might return to its traditional glory.
1. From the traditional view, bread ______.A.could be mass produced |
B.was not used for religious purposes |
C.symbolized some close relationships |
D.could not be served before a big meal |
A.To blanch bread. | B.To help bread keep longer. |
C.To speed the process of production. | D.To make bread more nutritious. |
A.①②→③→④⑤→⑥ | B.①→②→③④→⑤⑥ |
C.①②→③④→⑤→⑥ | D.①→②③→④⑤⑥ |
A.Bread is becoming less consumed. |
B.Handmade bread enjoys great popularity nowadays. |
C.Bread plays an important role throughout the world. |
D.Bread has along history as main food dominating tables. |
【推荐2】Still dressed in their sleepwear, Dian Turner’s kids couldn‘’t wait to get outside. But they didn’t go far — they stopped at the footpath outside their Melbourne home, armed with a box of chalks.
Max, seven, and Lenny, four, have been away from their friends since coronavirus physical-distancing rules came into force and the Victorian school holidays were brought forwards a week. They’re just two of the many children who have been spending their shutdown time drawing rainbows (彩虹) and encouraging messages like “We’re all in this together” across Australia. “It was something for the kids to make them feel connected to other people, because obviously they’re feeling a little bit uncertain about staying at home and what this means, and not being able to go to the playground and the park,” Ms Turner said.
Ms Turner first saw the idea when she was added to a Facebook group called the Rainbow Trail, which documents children and their parents drawing rainbows for others to spot. Ms Turner, a lawyer who has been spending much of her time working from home amid the shutdown measures, said it was “something positive to talk about” with the family. “You’re not breaking any of the social-distancing rules but it’s something that you can do and you can be happy and show that there’s a connection.”
University of Melbourne public health researcher Lisa Gibbs said it was important to provide children with age-appropriate ways to make them feel active and capable during the pandemic. “It’s easy in times of danger, which essentially this is, to be so concerned with protecting children, which obviously is of great importance,” Professor Gibbs said. “But in protecting children we can sometimes treat them as vulnerable (脆弱的), which makes them feel useless. So these sorts of activities are really helpful in providing a sense of agency in children that they can make a contribution to others.”
Professor Gibbs said in times of disaster, two patterns were very common — community mobilization, where people banded together, and community deterioration (恶化), where social supports fell apart. “So what these activities from children are doing is really contributing to social mobilization,” she said. “And people respond really positively to children’s messages, because they spread joy.”
1. What did Max and Lenny do during the shutdown time?A.They held a party. |
B.They drew rainbows in pencil. |
C.They gave their neighbors a lift with art. |
D.They played some sports games on the footpath. |
A.It is beneficial. |
B.It is time-wasting. |
C.It should be further developed. |
D.It may break social-distancing rules. |
A.They are safe. |
B.They are careless. |
C.They are helpless. |
D.They are valuable. |
A.They help to build social connection. |
B.They are hard to understand. |
C.They will cause pollution. |
D.They lack creativity. |
【推荐3】“Girls are weak, and boys are strong. This is what is being subconsciously communicated to hundreds of millions of young boys and girls all over the world, just like it was with me,” said American actor Justin Baldoni. As a boy, all he wanted was to be accepted by other people. That acceptance meant he had to pretend to be strong when he was weak, confident when he felt insecure, and tough when he was actually hurting.
Is that a healthy lifestyle? A member of the CPPCC Standing Committee might say “yes”. In his proposal, he spoke of a need to “prevent the feminization of male youths”. In response to his call, China’s Ministry of Education has recently demanded that schools should hire more physical education teachers and improve teaching methods to cultivate masculinity in students.
The response has been widely debated online, with many people saying that it reinforces gender stereotypes. The state broadcaster CCTV wrote on its Weibo account, “Education is not simply about cultivating men and women. It’s more important to develop a willingness to take responsibility.” You might be wondering now: What is masculinity, and why is this so controversial?
Well, by itself, “masculinity” refers to the qualities traditionally considered to be typical of men. While there is not really a single “correct” set of qualities, the term is often associated with strength, courage, assertiveness, and emotional control. Sometimes, however, these seemingly admirable qualities can be extended in unrealistic ways. But boys are also human. Blindly asking them to control their feelings “like a man” can only increase their stress when they grow up.
As an educator who has spent years teaching in China, I agree that attaching more importance to physical education would definitely benefit students. Sports provide opportunities for physical fitness. More importantly, they can help develop lifelong skills, such as leadership and communication skills. However, putting the emphasis on masculinity is far from a sound reason for which to do so.
It is unnecessary for all boys to build up their muscles, but it is essential that they all learn how to be strong inside. It is also fine for boys to cry and to show their weakness. Schools should work on equipping students with the skills and values they will need to be successful in life, not reinforcing stereotypes of masculinity borrowed from a bygone age.
1. Why did young Justin Baldoni think it necessary to pretend to be what he was actually not?A.He was trying to be strong and confident. |
B.He wanted to be accepted as a real man. |
C.It was necessary for an actor to be strong and tough. |
D.He felt it secure and safe to do so. |
A.manly qualities | B.potential abilities |
C.self-centredness | D.steady strength |
A.It is necessary to prevent the feminization of male youths. |
B.Physical education should be paid more attention to. |
C.We should teach students according to their individual qualities. |
D.Importance should be attached to developing students’ sense of responsibility. |
A.Masculinity is out of date. |
B.Masculinity is overstated. |
C.Masculinity shows physical strength. |
D.Masculinity only focuses on physical fitness. |
A.We should do everything we can to guarantee students’ health. |
B.Schools should differentiate between boys and girls while educating them. |
C.It is important to prepare students with necessary skills and right values. |
D.It is time to weaken stereotypes of masculinity. |
【推荐1】A new app called curbi is providing parents with strong control over their children’s online activity, any time, anywhere!
Any parent of a child who has access to technology, which covers any kid old enough to point a finger, fights endless battles around proper usage, time spent and time wasted on personal devices.
Developed by a team in Western Australia, once set up, it links parents to all devices used by their kids—iPhones, iPads and iPods—so that they can direct, block or monitor their Internet time in detail.
With the touch of a button, you can put your kid’s tablet into 10 minutes of ‘Time Out’ (that’s zero Internet access), or block his or her access to social media and time-wasting apps to keep her focused during study.
The beauty of the app is that parents can set the rules (eg a ‘bedtime’ mode that allows no social media or video apps like YouTube) and apply them any time, anywhere – whether children are on the home network, or using free wifi or mobile data. It can even disable the device’s camera, photo stream and block in-app purchases, screenshots and app installations. Curbi’s most obvious application is for keeping kids safe, allowing parents to block content such as adult, TV and video sites.
The monitoring aspect allows parents to check what each of their techno children is up to on their device, at a glance—a detailed report of how many minutes are spent on each site or app can even be emailed.
1. What can parents do with the help of the new app?A.Visit the camera of their child’s personal device. |
B.Use free wifi and mobile datat any time, anywhere. |
C.Fight endless battles around the use of personal devices. |
D.Prevent their child using some apps on their personal device. |
A.Negative. | B.Supportive. | C.Doubtful. | D.Concerned. |
A.Affordable. | B.Safe. | C.Time-wasting. | D.Convenient. |
A.To call on parents to monitor their children. |
B.To advertise a personal device to customers. |
C.To introduce a new monitoring app to parents. |
D.To attract readers’ attention to a common issue. |
Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It can’t be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can’t detect them or sense them without a radio receiver. Similarly, we can’t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being immediately by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and if they are killed immediately. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can be irradiated(辐射)and feel fine, then die for cancer five, ten, or twenty years later as a result. Or a child can be born weak as a result of radiation absorbed by its parents.
Radiation can hurt us. We must know the truth.
1. What is the main idea of the passage?
A.How radiation kills a man. |
B.How to detect nuclear radiation. |
C.The mystery about nuclear radiation. |
D.Serious harm caused by nuclear radiation. |
A.It is just like common radio waves. |
B.It can be harmless if its level is low. |
C.It can be detected by human senses. |
D.It can cause cancer to human beings. |
A.By damaging its heart. |
B.By stopping it breathing. |
C.By killing many cells in key organs. |
D.By destroying its brain. |
A.die of cancer after many years | B.die immediately |
C.have a child who may be born weak | D.all of the above |
【推荐3】Every week in China, millions of people will sit in front of their TVs watching teenagers compete for the title Character Hero which is a Chinese-style spelling bee (拼写大赛) . In this challenge, young competitors must write Chinese characters by hand. To prepare for the competition, the competitors usually spend months studying dictionaries.
Perhaps the show’s popularity should not be a surprise. Along with gunpowder and paper, many Chinese people consider the creation of Chinese calligraphy (书法) to be one of their primary contributions to civilization. Unfortunately , all over the country, Chinese people are forgetting how to write their own language without computerized help. Software on smart phones and computers allows users to type in the basic sound of the word using the Latin alphabet. The correct character is chosen from a list. The result? It’s possible to recognize characters without remembering how to write them.
But there’s still hope for the writing brush. China’s Ministry of Education wants children to spend more time learning how to write. In one Beijing primary school we visited, students practise calligraphy every day inside a specially decorated classroom with traditional Chinese paintings hanging on the walls. They look up at the blackboard often to study their teacher’s examples before carefully attempting to reproduce those characters on thin rice paper. “If adults can survive without using handwriting, why bother to teach it now?” we ask the calligraphy teacher Shen Bin. “The ability to write characters is part of Chinese tradition and culture.” she reasons. “Students must learn now so they don’t forget when they grow up,” says the teacher.
1. What can we learn about the Chinese-style spelling bee?A.It’s open to people of all ages and all walks. |
B.It’s the most-viewed TV programme in China. |
C.It aims to spread Chinese culture to the world. |
D.It draws great public attention across the country. |
A.Chinese people don’t refer to dictionaries very often. |
B.Chinese people no longer use brush pens or practise calligraphy. |
C.Chinese people are using the Latin alphabet instead of the characters. |
D.Chinese people needn’t write by hand as often with the help of technology. |
A.necessary for adults to survive in China |
B.a requirement made by the Ministry of Education |
C.helpful to keep Chinese tradition and culture alive |
D.an ability to be developed only when you are students |
A.A news report. | B.A science report. |
C.An advertisement. | D.Children’s literature |