组卷网 > 高中英语综合库 > 主题 > 人与社会 > 科普与现代技术 > 科普知识
题型:阅读理解-阅读单选 难度:0.65 引用次数:64 题号:8930661

You’re walking down a quiet street and suddenly you hear some footsteps. Undoubtedly, it means that there’s someone around. But have you ever wonder why it occurs to us that it’s someone else’s footsteps, not ours?

According to a new study published in the journal Nature in September, this phenomenon arises from a function in our brain to ignore the noise we make ourselves.

In order to explore how our brain does this, a group of scientists carried out an experiment with mice at Duke University. The research entered on an intuition(直觉)—that we are usually unaware of the sound of our own footsteps—as a vehicle for understanding larger neural(神经系统的) phenomena; how this behavior reveals the ability to monitor, recognize, and remember the sound of one’s own movements in relation to those of their larger environments.

In the experiment, research controlled the sounds of a group of mice could hear, reported Science Daily. During the first several days, the mice would hear the same sound each time they took a step. This was just like “running on a tiny piano with each key playing exactly the same note”, senior study author Richard Mooney, a professor of neurobiology at Duke University, told Live Science.

Scientists found that their auditory cortex (听觉皮层) – the area of the brain that processes sound – became active at first but decreased its response to the sound after two or three minutes when the mice became familiar with it.

“ It’s almost like they were wearing special headphones that could filter(过滤) out the sound of their own movements.” David Schneider, an assistant professor at the Center for Neutral Science at New York University, told HuffPost.

But once the sound changed, their auditory cortex became active again. This suggests that the “sensory filter” in a mouse’s brain could help it detect new sounds or abnormal noise in the environment easily after tuning out familiar sounds.

“For mice, this is really important,” said Schneider. “They are prey animals, so they really need to be able to listen for a cat creeping up on them, even when they’re walking and making noise.

Being able to ignore the sounds of one’s own movements is likely important for humans as well. But the ability to predict the sounds of our own actions is also important for more complex human behaviors such as speaking or playing an instrument.

“When we learn to speak or to play music, we predict what sounds we are going to hear – such as when we prepare to strike keys on a piano – and we compare this to what we actually hear, ”explains Schneider. “We use mismatches between expectation and experience to change how we play – and we get better over time because our brain is trying to minimize these errors.”

1. What can be discovered about mice in the experiment?
A.Their brain responds inactively to the familiar sounds
B.They are able to detect sounds other animals don’t notice.
C.They cannot identify different sounds except their own footsteps.
D.Different areas of their brain are responsible for different sounds.
2. What’s the function of the sensory filter?
A.Getting used to abnormal or unfamiliar sounds.
B.Ignoring the sounds made by our companions.
C.Identifying the sounds from a larger environment.
D.Being sensitive to the sounds of our own movement.
3. Why can a good symphony conductor immediately recognize it when a wrong note is played?
A.He has the ability to match the wrong note with the instrument player.
B.He has an intuition that he should ignore the sound of his own movement.
C.He has a low expectation and knows where players are likely to make errors.
D.He has a good prediction of how each note should be played in the orchestra.
4. What can be inferred from the passage?
A.Noise-filtering ability ensures us a quiet and undisturbed environment.
B.The ability to ignore familiar noises helps to detect potential dangers.
C.The activeness of auditory cortex determines our activity performance.
D.Sound-predicting ability seems not so important for humans as for animals.

相似题推荐

阅读理解-阅读单选(约320词) | 适中 (0.65)
名校
文章大意:这是一篇说明文。研究发现,长须鲸的叫声可以帮助创造海底图像,进而帮助科学家们探索地壳结构。

【推荐1】Scientists have an unlikely new helper while exploring the Earth’s crust (地壳) deep beneath the ocean: Fin whales. New research, published Thursday in Science, finds these Fin whale calls’ sound waves can help create images of the seafloor down to 2. 5 kilometers.

Seafloor imaging, which is important for studying things like earthquake mechanics and carbon storage capacity, usually uses large air guns that send waves of sound downwards. The sound waves go through the crust and bounce back to instruments on the seafloor, carrying information about the structures they travel through. But such surveys are expensive, and the guns’ explosive noise may interrupt sea creatures that use sound to communicate.

Vaclav Kuna, the study co-author, was studying earthquakes when he noticed strange readings on the seafloor seismic (地震的) instruments, which turned out to match the frequencies of fin whale calls. Whale songs often appear in such instruments’ records, says Emily Roland, a marine seismologist at the University of Washington. Seismologists usually see these signals as annoyance. Kuna, however, noticed that the signals were not coming directly from the whales, but were echoes bouncing back from within the crust.

This technique does have limitations, Kuna says. Fin whale songs are limited in frequency, meaning the subsurface images are not as clear as those made with air guns. Additionally, a relatively flat seafloor is needed to triangulate (作三角测量) the whales’ positions while multiple stations would be needed in uneven or mountainous regions, he says.

Nevertheless, these whales are found almost everywhere except the ice-covered areas of the Arctic. The whale calls’ wide existence means they could provide new insight into old seismic datasets, Roland says. “At least the whale songs can serve as an additional source of signals. They are free and they are always there,” Kuna says. “It’s a win-win.”

1. What do we know about seafloor imaging in Paragraph 2?
A.It may affect some sea animals.B.It can help predict earthquakes.
C.It is not completely accurate.D.It is environmentally-friendly.
2. What can we infer about fin whale calls?
A.They can help scientists to locate their habitats.
B.They are easy to record and measure in the ocean.
C.They are likely to be used for seafloor imaging.
D.They have different frequencies among fin whales.
3. What is the potential use of fin whale songs?
A.Exchanging messages between whales.
B.Working as an extra source of signals.
C.Providing useful insights into whales.
D.Exploring the ice-covered areas of the Arctic.
4. What is the best title for the text?
A.Fin Whale Calls Reveal Structure beneath Ocean Floor
B.Fin Whales Communicate by Singing Special Songs
C.Fin Whale Protection Is a Win-win Move for All
D.Seafloor Imaging Helps to Locate More Resources
2023-04-07更新 | 87次组卷
阅读理解-阅读单选(约340词) | 适中 (0.65)
名校
文章大意:这是一篇说明文。文章主要说明了休息有助于精神放松,且身体和心灵是相互作用的,建议我们重新学习休息的艺术,尤其是在这个繁忙的时代。

【推荐2】Stress is common in modern society. When you decide to do something about your stress levels it doesn’t necessarily mean you have to turn your whole life upside down — quit your job, file for divorce, move to another country. Among all the stress management strategies out there we are forgetting one essential treatment — taking time for rest.

For a long time, psychology was based on a clear division between body and mind. Psychologists focused almost only on what went on between our ears. The body was the responsibility of medical doctors and gym instructors. Recently, however, there has been a growing realization within psychology circles that the body and mind are closely connected with each other, far more than anyone ever imagined. You suffer more from stress when you are feeling run down or are suffering from a flu. If you have a bad night’s sleep, everything is more stressful the next day.

While you are more likely to suffer from stress when you are feeling poorly, you can alleviate it by looking after your body. Rest is actually good for both body and mind. We all need at least a little time to think, to reflect on life and even just to be bored. Your free time is meant for relaxation and recovery, and that is impossible when you have too much to do.

We need to relearn the art of rest, especially in these busy times. Getting enough rest is not just something we should do when we are exhausted. It is only when we take a good rest that we will be able to take a stand against stress. I like to imagine that in a few years from now it will be entirely acceptable to say, “Given how hard I worked last week on our project, this week I am going to take a day off.”

1. Which statement will the author probably agree with?
A.Only modern people feel stressed.
B.Psychologists don’t have to focus on the body.
C.Quitting your job is the best way to reduce stress.
D.Body and mind are strongly interacted with each other.
2. What does the underlined word “alleviate” in Paragraph 3 probably mean?
A.Develop.B.Increase.C.Relieve.D.Maintain.
3. What can we know about rest?
A.Rest contributes to mental relief.B.Rest will surely make people bored.
C.The idea of rest is well accepted now.D.Rest is needed only when people are tired.
4. Which is the most suitable title for the text?
A.Physical Health Affects the MindB.Rest is the Secret to Stress Relief
C.Brain Processes Psychological PainD.Good Life Starts with Stress Management
2023-12-26更新 | 70次组卷
阅读理解-七选五(约220词) | 适中 (0.65)
名校
文章大意:本文是一篇说明文。文章主要介绍了成功人士共有的两种特征以及作者对取得成功的建议。

【推荐3】I remember when I got my first well-paid job right out of college, I still had low self-esteem (自尊) and self-doubt.     1     So what is the secret to success and why is it so hard for us to achieve it? Here are the top two things that I’ve found truly successful people all have in common.

    2    

People who find true success don’t achieve it by accident. They are very intentional and do the hard work to figure out what matters to them most.     3    

The ones who achieve true success know that life isn’t about making life easier, it’s about making yourself stronger. And the only way to get yourself stronger is to stop sitting on the sidelines letting life go by and give everything your best shot.

Keep their minds out of survival mode (模式).

There’s a special part in your brain.     4     Usually fears that kick in will force your brain into survival mode. When you are in survival mode, you don’t spend enough time on what changes you can make to get yourself out of it. So how do you get your brain out of survival mode?     5     Meditation (冥想) can help you get out of survival mode and activate the part of your brain that is capable of very important functions needed to help you change your situation.

A.I still felt like a failure.
B.There is no easy path to success.
C.Take full ownership of their own story.
D.Live a life someone else tells you to live.
E.What it does is that it looks out for your survival.
F.The answer lies in finding time to give yourself a safe space.
G.The part of me that I know deep down can make an impact on the world.
2022-11-01更新 | 69次组卷
共计 平均难度:一般