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题型:阅读理解-阅读单选 难度:0.65 引用次数:30 题号:14300475

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.
2. What can we know about the study?
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.
3. Social media use affects one’s sleep in the following ways except that ________.
A.one will stay up lateB.one can get excited.
C.one’s sleep rhythms will be disturbedD.one can fall fast asleep
4. What is the main idea of the passage?
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.
5. The main purpose of the passage is to ________.
A.informB.encourageC.persuadeD.advise

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阅读理解-阅读单选(约440词) | 适中 (0.65)
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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.
2. What can we infer about the IoT from Paragraph 2?
A.It is under connection.
B.It is getting computerized.
C.It is getting widespread use.
D.It is connecting computers.
3. What benefits can the IoT bring in the future?
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.
4. According to the last paragraph what will be discussed in the following part?
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.
2020-09-21更新 | 107次组卷
阅读理解-阅读单选(约330词) | 适中 (0.65)
文章大意:本文是一篇说明文。一项研究表明,电子设备的使用意味着父母不能给孩子提供有意义的情感支持和积极的反馈,所以作者建议父母与孩子有更多面对面的黄金时光。

【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.
2. What were the parents asked to do in the study?
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.
3. What does the underlined word “drawbacks” in paragraph 4 probably mean?
A.Effects.B.Disadvantages.C.Benefits.D.Functions.
4. What does the writer suggest parents do?
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.
2023-04-21更新 | 138次组卷
阅读理解-阅读单选(约370词) | 适中 (0.65)
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【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.
2. What was the purpose of the experiment?
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.
3. What does Ross think of underwater data centres?
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.
4. What will Microsoft probably do later according to the last paragraph?
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.
2021-01-04更新 | 21次组卷
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