New research helps to explain why screaming i...

New research helps to explain why screaming is disturbing and useful.

Screams, like those we hear in horror movies, have a special quality that separates them from other noises we make and hear. These screams are recognized by people all over the world.

1."Every kid in every culture screams. Every adult in the context of a true fear responds with screams. So it's just a feature of the human mind and brain．”

David Poeppel is a neuroscientist at New York University. He wondered why screams were recognized the same way by people all around the world. So, he and his colleagues set up an experiment.

They recorded screams from movies and from volunteers who took part in the research.2.Instead, they measured how quickly the sounds in the scream changed in volume. It was in this area-the change in volume that screams stand apart from other sounds.

When the volume of a sound changes that quickly it has a quality called roughness. "3.David Poeppel and his team found that car alarms, sirens, and alarm clocks also have this quality, this roughness.”

The scientists then studied how this "roughness" changed brain activity. They asked the volunteers to listen to different types of screams and alarms in an MRI scanner, The researchers found that the greater "roughness" of a sound. the more it activates the amygdala.

4.“The amygdala acts like a gauge that says ‘wow, this sound has a lot of roughness in it; that’s particularly alarming and scary. ’"

Screams, it turns out, are a direct link to the part of our brain that tells us whether we should be afraid or not. 5.

Now, we know why a scream.. gets so much attention, So quickly.

A. People who hear these rough sounds are also more likely to react to them very quickly.

B. People of all cultures and languages hear the same thing in a scream: fear.

C. A scream is to say ‘I’m in trouble and I need help.’

D. The amygdala is an area deep in the brain that answers to fear.

E. The more roughness a sound has, the more worrying it is

F. Screams played a very important evolutionary role in our survival

G. The scientists, however, did not measure the screams for loudness or pitch

高三英语七选五中等难度题查看答案及解析

Dennis Sinar, 51, a doctor from New York, is quick to explain why he took a year- long break from his job. “ I was pretty burned out after practicing medicine for 26 years. I needed a recharge.” So he took a “ gap year”,　 from July 2011 to June 2012, to explore things like ancient buildings, and traditional Eastern medicine, in locations including Alaska, Nepal and Romania.

“ Taking a break from work is an excellent way for adults to go into a new career or refresh an old one,” said Holly Bull, president of Princeton,N,J. “ In recent years, mid-career breaks have been gaining more interest,” she said. A report on adult gap years published this year by a market research company also desbribed the potential American market for gap years as a “ sleeping giant.”

“ A gap year is a challenge for the older individual to step out of comfort zone and take a risk. I enjoyed that side most.” Said Dr.Sinar, who kept a daily blog about his experience. His time studying Eastern medicine at his old job, although he works fewer days. “ I use those experiences to provide my patients with more care,” he added. “ And I listen better than I did before.”

Geoge Garrian, chairman of the Department of Leadership and Human Capital Mangement at New York University , certainly agrees with Dr. Sinar. He said a gap-year experience could be worthwhile for employees and companies. For employees, investing in themselves and improving skill sets is a move that will benefit throughout their career. He added that returning employees feel refreshed and have given more thought to their career. For companies, offering unpaid leaves makes good sense for attracting and keeping talented employees.

1.Dr. Sinar took a gap year because he ______.

A. had lost his old job

B. wanted to refresh after 26 years’ work

C. had a desire for travelling

D. became interested in historical research

2.The phrase “sleeping giant”( in 2nd paragragh) indicates that_____.

A. it’s too early for people to accept the concept of gap year.

B. the effect of gap year policy remains to be seen

C. it’s difficult to foresee the gap year market

D. more American people will accept the gap year policy

3.What’s George Garritan’s attitude toward the “ gap year”?

A. positive　　 B. Doubtful　 C. Uninterested　　 D. uncertain

4.What’s the passage mainly about?

A. How an adult plans a mid- career gap year

B. Why a gap year is worthwhile for adults

C. Whether a gap year is popular with adults

D. Why a gap year is challenging for individuals[

高三英语阅读理解中等难度题查看答案及解析

He asks that he ________ an opportunity to explain why he’s refused to go there.

A. is given　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 B. must give　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 C. should give　 　　　　　　　　　 　　　　　　　　　 D. be given

高三英语单项填空极难题查看答案及解析

Why Walking Your Dog Is Great Exercise

Having trouble sticking to an exercise program?Research shows that dogs are actually nature's perfect personal trainers-loyal,hard-working,energetic and enthusiastic.Your friends may skip an exercise session because of appointments,extra chores or bad weather.1.

Is dog walking really effective exercise?Many people are becoming interested in exercise to help lose excess weight.2.Dog owner-ship and obesity were evaluated in Seattle,Wash.,and Baltimore,Md.,in a study published in the journal Preventive Medicine in September 2008.Dog owners who reported walking their dogs were almost 25 percent less likely to be obese than people without dogs.

What are the benefits of regular exercise?Dr.Joanna Kruk reviewed medical literature describing the health benefits of exercise.Her research showed that the risk of developing a number of serious health problems is reduced by physical activity and exercise.

3.It's easy to forget about healthy walking plans,so set the stage for a successful program: Establish a walking schedule; plan to walk 30 minutes total each day.This might include a 10-minute neighborhood walk in the morning and a 20-minute romp at the dog park after work.Or maybe three 10-minule walks or one 30-minute walk fit in better with your day.

If dog walking is "scheduled" each day,you'll feel more responsible for sticking with your program.4.Most importantly,daily walking your dog will keep it fit and give it an opportunity to utilize their senses while also engaging their mind.

So,grab a leash,whistle to the pup,and go for a walk-today and every day! Take action!5.

A.Plan for success.

B.Track your progress.

C.This will reinforce your good behavior.

D.Dog walking is a great way to start a healthy lifestyle program.

E.However,dogs never give you an excuse to delay exercising.

F.Plus,your dog will also get used to the routine and remind you when "it's time"!

G.Obesity is affecting about one in every three to four adults in the United States and Europe.

高三英语七选五中等难度题查看答案及解析

Thanks to scientific research, we now have a good understanding of ______ an earthquake is and why it happens.

A. how           B.which             C.whether          D. what

高三英语单项填空中等难度题查看答案及解析

The team of researchers from the University of Lincoln, UK, is designing and building an app to help farmers in hot climates identify and record the spread of locusts(蝗虫) on their land.

By recognizing locusts through the smartphone’s camera, the app will be able to identify the stage of the insect's growth and record its location. This information can then be utilized so that the farmers can use pesticides(杀虫剂) more accurately in the early stages of their life time, greatly reducing the amount of crop damage.

This approach could also reduce remaining pesticide levels, leading to increased food safety while maintaining food security and protecting nearby water systems.

“Each year, approximately 18 million hectares of land are damaged by locusts, influencing hugely farmers and their productivity, explains Dr. Bashir Al-Diri from the School of Computer Science at the University of Lincoln.” Their monitoring techniques currently rely on field surveys by people through digging insect eggs, but this information only helps farmers to make mid and long-term forecasting decisions and can delay effective management measures. By digitally recording the exact number, age and location of locusts, we hope this new app will put more knowledge and more power into the hands of the farmers.

Dr. Al-Diri and his team of computer scientists work with the Lincoln Institute for Agri-food Technology at the University of Lincoln, aiming to support and improve productivity, efficiency and farming through research, education and new technology.

With advanced technology, the developers hope that the app will also be used for a wide range in the future to capture and document information about the natural world. For example, it could easily be adapted to help individuals identify plant diseases or to digitally capture the number and type of birds and wildlife in specific locations as part of national and international surveys.

1.What do we know about the app mentioned in the passage?

A.It has helped farmers record the spread of locusts.

B.It will be of great use for farmers in hot climates.

C.It may cost the farmers more than they expect.

D.It will remind farmers of what the locusts look like.

2.Which can replace the underlined word "utilized” in the passage?

A.Accessed. B.Controlled.

C.Arranged. D.Progressed.

3.What can we know according to Dr. Bashir Al-Diri?

A.Farmers don't know how to deal with locusts.

B.Their techniques can be used to dig insect eggs.

C.Farmers suffer greatly because of locusts.

D.Some steps must be taken before using the app.

4.What is the purpose of Al-Diri and his team?

A.To check if the app is useful in killing locusts.

B.To educate farmers on how to protect themselves.

C.To assist in raising agricultural production level.

D.To direct farmers to change their farming methods.

高三英语阅读理解中等难度题查看答案及解析

Chinese researchers have developed a robot designed to help doctors treat the new coronavirus (新冠病毒) and other highly contagious diseases.

The robot can perform some of the same medical examination tasks as doctors. For example, the device can perform ultrasounds, collect fluid samples from a person's mouth and listen to sounds made by a patient’s organs. Cameras record the robot’s activities, which are controlled remotely so doctors can avoid coming in close contact with infected patients. Doctors and other medical workers can operate the machine from a nearby room, or from much farther away.

The robot's main designer is Zheng Gangtie, an engineer and professor at China’s Tsinghua University in Beijing. “Doctors are all very brave,” Zheng said. “But this virus is just too contagious…We can use robots to perform the most dangerous tasks.” Zheng said a friend of his, the head of Beijing’s Tsinghua Changgung Hospital, told him that one of the biggest problems in dealing with COVID-19 was that health care workers treating patients were getting infected themselves. Zheng said he wanted to do something to help this situation. So the engineer gathered a team and went to work on the robotic device. Zheng said the team was able to convert two robotic arms. The devices use the same technology that is used for space equipment, including moon explorers. The new robot is almost completely automated, Zheng said. It can even disinfect itself after performing actions involving patient contact. However, Zheng said he had heard from some doctors that it would be better not to build such robots to be fully automatic. This is because many patients still desire a personal presence to help calm them during treatment.

The team currently has two robots and both have been tested by doctors at hospitals in Beijing. One machine was taken to Wuhan’s Union Hospital, where doctors were being trained to use it. The plan is to use the robot to help treat coronavirus patients, along with assistance from nurses and other hospital workers.

Zheng would like to build more of the robots, but said money from the university has run out. About $72,000 has been spent on each robot. He said he does not plan to commercialize the design, but hopes that a company can begin that process.

1.What can we learn from Paragraph 2?

A.The robot can record doctors’ activities.

B.The robot can carry out actions automatically.

C.The robot can assist doctors to examine patients.

D.The robot can collect samples of patients’ organs.

2.The underlined word “disinfect” in Paragraph 3 is the closest in meaning to

A.affect B.clean

C.update D.fix

3.What can we infer about the robot according to Zheng Gangtie?

A.It is very costly to make.

B.It is highly recognized by doctors.

C.It can be purchased in the market soon.

D.It can also be used in moon exploration.

4.What is the main purpose of the text?

A.To introduce a new type of medical robot.

B.To provide guidance on treating COVID-19.

C.To describe the current condition of COVID-19.

D.To promote the commercialization of a new robot.

高三英语阅读理解中等难度题查看答案及解析

The manager proposed that Tom _________an opportunity to explain why he’d refused to go there.

A. was given　　　　 B. must give　　　　　　　　 C. should give　　 D. be given

高三英语单项填空中等难度题查看答案及解析

Why! I have nothing to explain.　　 　　 you want me to say?

A. What is it that　　 B. What it is that

C. How is it that　　 D. How it is that

高三英语单项填空困难题查看答案及解析

阅读下列材料，在空白处填入适当的内容(一个单词)或括号内单词的正确形式。

Researchers in China have explained why basking (沐浴)in the sun can make people smart. It is known to everybody that the sun is very important and nothing in the world can survive 1.it. Science has already proved that sunny days can help 2.(strong) a person’s mood, intelligence and memory.

A team at the University of Science and Technology of China in Hefei, Anhui province discovers that UV light, an element of sunshine, makes a change in the brain that can make 3.(we) smarter.

Tests on mice show that moods and learning can be improved due to enough exposure to UV light, according to Xiong Wei, 4.professor at the university 's School of Life Sciences who led the study. He says that mice 5.(expose) to UV light, which is equal to 20 to 30 minutes of midday sun in Florida in summer. Exposure to UV light 6.(increase) the level of a substance in blood, which reacts with brain cells 7.(promote) functions such as learning and memory. Xiong says previous research has 8.(actual) found that this substance will change in our body and do good to our 9.(fit), but this is the first time that it has been showed that the process can happen in the brain, which is a finding 10.surprises the team.

高三英语语法填空中等难度题查看答案及解析