游客
题文

Since the 1970s, scientists have been searching for ways to link the brain with computers. Brain-computer interface (BCI) technology could help people with disabilities send orders to machines.
Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne, Switzerland, showed a small robotic wheelchair directed by a person's thoughts.
In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the wheelchair and guided it with his thoughts.
“Our brain has billions of nerve cells(神经细胞). These send signals through the spinal cord (脊髓)to the muscles(肌肉) to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles.” Tavella says. “Our system allows disabled people to communicate with outside world and also to control the machine.”
The researchers designed a special cap for the user. This head cover picks up the signals from the scalp(头皮)and sends them to a computer. The computer understands the signals and directs the motorized wheelchair. The wheelchair also has two cameras that recognize objects in its path. They help the computer react to orders from the brain.
Prof. Millan, the team leader, says scientists keep improving the computer software that understands brain signals and turns them into simple orders. “The practical possibilities that BCI technology offers to disabled people can be divided into two kinds: communication, and controlling the machine. One example is this wheelchair.”
He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit from. And the other is to ensure that they can use the technology over long periods of time.
How did Tavella operate the wheelchair in the laboratory?

A.By controlling his muscles.
B.By talking to the machine.
C.By moving his hand.
D.By using his mind.

Which of the following shows the path of the signals described in Paragraph 5?

A.scalp → computer → cap →wheelchair
B.computer → cap → scalp →wheelchair
C.scalp → cap → computer →wheelchair
D.cap → computer → scalp →wheelchair

The team will test with real patients to ______.

A.make profits from them
B.prove the technology useful to them
C.make them live longer
D.learn about their physical condition

Which of the following would be the best title for the text?

A.Switzerland, the BCI Research Center
B.New Findings About How the Human Brain Works
C.BCI Could Mean More Freedom for the Disabled
D.Computer Technology Could Help to Cure Brain Injuries
科目 英语   题型 阅读理解   难度 中等
登录免费查看答案和解析
相关试题

When my brother and I were young, my mom would take us on Transportation Days.
It goes like this: You can’t take any means of transportation more than once. We would start from home, walking two blocks to the rail station. We’d take the train into the city center, then a bus, switching to the tram, then maybe a taxi. We always considered taking a horse carriage in the historic district, but we didn’t like the way the horses were treated, so we never did. At the end of the day, we took the subway to our closet station, where Mom’s friend was waiting to give us a ride home——our first car ride of the day.
The good thing about Transportation Days is not only that Mom taught us how to get around. She was born to be multimodal (多方式的). She understood that depending on cars only was a failure of imagination and, above all, a failure of confidence—the product of a childhood not spent exploring subway tunnels.
Once you learn the route map and step with certainty over the gap between the train and the platform, nothing is frightening anymore. New cities are just light-rail lines to be explored. And your personal car, if you have one, becomes just one more tool in the toolbox—and often an inadequate one, limiting both your mobility and your wallet.
On Transportation Days, we might stop for lunch on Chestnut Street or buy a new book or toy, but the transportation was the point. First, it was exciting enough to watch the world speed by from the train window. As I got older, my mom helped me unlock the mysteries that would otherwise have paralyzed my first attempts to do it myself: How do I know where to get off? How do I know how much it costs? How do I know when I need tickets, and where to get them? What track, what line, which direction, where’s the stop, and will I get wet when we go under the river?
I’m writing this right now on an airplane, a means we didn’t try on our Transportation Days and, we now know, the dirtiest and most polluting of them all. My flight routed me through Philadelphia. My multimodal mom met me for dinner in the airport. She took a train to meet me.
Which was forbidden by Mom on Transportation Days?

A.Having a car ride.
B.Taking the train twice.
C.Buying more than one toy.
D.Touring the historic district.

According to the writer, what was the greatest benefit of her Transportation Days?

A.Building confidence in herself.
B.Reducing her use of private cars.
C.Developing her sense of direction.
D.Giving her knowledge about vehicles.

The underlined word “paralyzed” (in Para. 5) is closest in meaning to “_______”.

A.displayed
B.justified
C.ignored
D.ruined

Which means of transportation does the writer probably disapprove of?

A.Airplane.
B.Subway.
C.Tram.
D.Car.

You’ve just come home, after living abroad for a few years. Since you’ve been away, has this country changed for the better—or for the worse?
If you’ve just arrived back in the UK after a fortnight’s holiday, small changes have probably surprised you—anything from a local greengrocer suddenly being replaced by a mobile-phone shop to someone in your street moving house.
So how have things changed to people coming back to Britain after seven, ten or even 15 years living abroad? What changes in society can they see that the rest of us have hardly noticed—or now take for granted? To find out, we asked some people who recently returned.
Debi: When we left, Cheltenham, my home town, was a town of white, middle-class families—all very conservative (保守的). The town is now home to many eastern Europeans and lots of Australians, who come here mainly to work in hotels and tourism. There are even several shops only for foreigners.
Having been an immigrant (移民) myself, I admire people who go overseas to find a job. Maybe if I lived in an inner city where unemployment was high, I’d think differently, but I believe foreign settlers have improved this country because they’re more open-minded and often work harder than the natives.
Christine: As we flew home over Britain, both of us remarked how green everything looked. But the differences between the place we’d left behind and the one we returned to were brought sharply into focus as soon as we landed.
To see policemen with guns in the airport for the first time was frightening—in Cyprus, they’re very relaxed—and I got pulled over by customs officers just for taking a woolen sweater with some metal-made buttons out of my case in the arrivals hall. Everyone seemed to be on guard. Even the airport car-hire firm wanted a credit card rather than cash because they said their vehicles had been used by bank robbers.
But anyway, this is still a green, beautiful country. I just wish more people would appreciate what they’ve got.
After a short overseas holiday, people tend to _______.

A.notice small changes
B.expect small changes
C.welcome small changes
D.exaggerate small changes

How does Debi look at the foreign settlers?

A.Cautiously.
B.Positively.
C.Sceptically.
D.Critically.

When arriving at the airport in Britain, Christine was shocked by _______.

A.the relaxed policemen
B.the messy arrivals hall
C.the tight security
D.the bank robbers

Which might be the best title for the passage?

A.Life in Britain.
B.Back in Britain.
C.Britain in Future.
D.Britain in Memory.

Many people believe Henry Ford invented the automobile (汽车). But Henry Ford did not start to build his first car until 1896. That was eleven years after two Germans developed the world's first automobile. Many people believe Henry Ford invented the production line that moved a car's parts to the worker, instead of making the worker move to the parts. That is not true, either. Many factory owners used methods of this kind before Ford. What Henry Ford did was to use other people's ideas and make them better. And he made the whole factory a moving production line.
In the early days of the automobile, almost every car maker raced his cars. It was the best way of gaining public notice. Henry Ford decided to build a racing car. Ford's most famous race was his first one. It was also the last race in which he drove the car himself.
The race was in 1901, at a field near Detroit. All of the most famous cars had entered, but only two were left: the Winton and Ford's. The Winton was famous for its speed. Most people thought the race was over before it began.
The Winton took an early lead. But halfway through the race, it began to lose power. Ford started to gain. And near the end of the race, he took the lead. Ford won the race and defeated the Winton. His name appeared in newspapers and he became wellknown all over the United States.Within weeks of the race, Henry Ford formed a new automobile company. In 1903, a doctor in Detroit bought the first car from the company. That sale was the beginning of Henry Ford's dream. Ford said: “I will build a motor car for a great number of people. It will be large enough for the family, but small enough for one person to operate and care for. It will be built of the best materials. It will be built by the best men to be employed. And it will be built with the simplest plans that modern engineering can produce. It will be so low in price that no man making good money will be unable to own one.”
The Model T was a car of that kind. It only cost $850. It was a simple machine that drivers could depend on. Doctors bought the Model T. So did farmers. Even criminals. They considered it the fastest and surest form of transportation. Americans loved the Model T. They wrote stories and songs about it. Thousands of Model T's were built in the first few years.
What do we know about Henry Ford from Paragraph 1 ?

A.He made good use of ideas from others.
B.He produced the first car in the world.
C.He knew how to improve auto parts.
D.He invented the production line.

Why did Henry Ford take part in the 1901 car race?

A.To show off his driving skills.
B.To draw public attention.
C.To learn about new technology.
D.To raise money for his new company.

“That sale” in Paragraph 4 refers to .

A.the selling of Ford cars at reduced prices
B.the sale of Model T to the mass of people
C.the selling of a car to a Detroit doctor
D.the sales target for the Ford Company

What was Henry Ford's dream according to the text?

A.Producing cars for average customers.
B.Building racing cars of simple design.
C.Designing more car models.
D.Starting more companies.

Twenty years ago, I drove a taxi for a living. One night I went to pick up a passenger at 2:30 am. When I arrived to collect, I found the building was dark except for a single light in a ground floor window.
I walked to the door and knocked, “Just a minute,” answered a weak and elderly voice. After a long pause, the door opened. A small woman in her eighties stood before me. By her side was a small suitcase.
I took the suitcase to the car, and then returned to help the woman. She took my arm and we walked slowly towards the car.
She kept thanking me for my kindness. “It's nothing,” I told her. “I just try to treat my passengers the way I would want my mother treated.”
“Oh, you are such a good man.” She said. When we got into the taxi, she gave me an address, and then asked, “Could you drive through downtown?”
“It's not the shortest way,” I answered quickly.
“Oh, I'm in no hurry,” she said. “I'm on my way to a hospice (临终医院). I don't have any family left. The doctor says I don't have very long.”
I quietly reached over and shut off the meter (计价器).
For the next two hours, we drove through the city. She showed me the building where she had once worked, the neighborhood where she had lived, and the furniture shop that had once been a ballroom where she had gone dancing as a girl.
Sometimes she'd ask me to slow down in front of a special building and would sit staring into the darkness, saying nothing.
At dawn, she suddenly said, “I'm tired. Let's go now.”
We drove in silence to the address she had given me.
“How much do I owe you?” she asked.
“Nothing.” I said.
“You have to make a living,” she answered. “Oh, there are other passengers.” I answered.
Almost without thinking, I bent and gave her a hug. She held onto me tightly. Our hug ended with her remark, “You gave an old woman a little moment of joy.”
Why did the man help the old woman so much?

A.He wanted to get more money from the old woman.
B.He was out of patience with the woman and wanted to leave quicker.
C.The old woman asked him to help.
D.He hoped others could also treated his old mother as well as he did.

The old woman chose to ride through the city in order to .

A.show she was familiar with the city
B.see some places for the last time
C.let the driver earn more money
D.reach the destination on time

According to the text, what would the old woman feel after the driver showed her around the city and gave her a warm hug?

A.Excited. B.Shocked.
C.Grateful. D.Upset.

What can we learn from the story?

A.Giving is always a pleasure.
B.People should respect each other.
C.An act of kindness can bring people great joy.
D.People should learn to appreciate others' concern.

★ Help Wanted
PAINTER
Must have at least 3 years painting experience. Commercial and new construction work. $10/hr. Immediate opening. Call 435-9201 with work history.
SECRETARY
Part time position available in friendly, busy office. Good typing and general office skills. Some
weekends required. High pay. Various duties. Apply (申请) at East Side Management, 500 Park Drive, Dewitt, NY. 13214.
★ Help wanted
VET ASSISTANT
Person needed for busy animal hospital. Some nights and weekends. Apply in person to Johnson Marks Animal Hospital, 404 Snow Road, Syracuse, NY 13224. After 4 p.m. only please.
NURSES' ASSISTANTS
Fulltime and part time positions available for modern nursing home. High pay. Call Mrs. Downes, R.N. at 543 7618.
★ Help Wanted
COOK NEEDED
Immediately. Busy downtown restaurant. Must be good and dependable. Experience preferred. Weekends required. Call 324-9817.
SALESPERSON
Experienced. Must have some knowledge of men's clothing industry. Available to work evenings and some Saturdays. Send resume (简历) to: Martin Apparel, 237 Rockledge St., Syracuse, NY. 13224.
★ Help Wanted
TEACHER
Small private school needs English and maths teachers. Must have BS degree and at least 4 years teaching experience. Send resume to: Wales Charter School 19 South 8th St. NY. 13224.
HOTEL
Needs part time FRONT DESK CLERK No experience necessary. Excellent people and phone skills a must. Some computer skills helpful. $13/hr. Call: Mr. Jones 357-2897.
If you wanted to get a job as a maths teacher, send your resume to .

A.237 Rockledge St. ,Syracuse, NY.13224
B.404 Snow Road Syracuse, NY. 13224
C.500 Park Drive, DeWitt, NY. 13214
D.Wales Charter School 19 South 8th St.NY. 13214

If you dislike working on Sundays, being a should be your best choice.

A.cook B.secretary C.salesperson D.vet assistant

If you want to get a job at , you must have office skills.

A.Martin Apparel B.East Side Management
C.Wales Charter School D.Johnson Marks Animal Hospital

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号