A team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning what’s happening in their brains.
When you look at something, your eyes send a signal about that object to your brain. Different regions of the brain process the information your eyes send. Cells in your brain called neurons(神经元) are responsible for this processing.
The fMRI (functional Magnetic Resonance Imaging功能性磁共振造影) brain scans could generally match electrical activity in the brain to the basic shape of a picture that someone was looking at.
Like cells anywhere else in your body, active neurons use oxygen. Blood brings oxygen to the neurons, and the more active a neuron is, the more oxygen it will consume. The more active a region of the brain, the more active its neurons, and in turn, the more blood will travel to that region. And by using fMRI, scientists can visualize which parts of the brain receive more oxygen- rich blood--and therefore, which parts are working to process information.
An fMRI machine is a device that scans the brain and measures changes in blood flow to the brain. The technology shows researchers how brain activity changes when a person thinks, looks at something, or carries out an activity like speaking or reading. By highlighting the areas of the brain at work when a person looks at different images, fMRI may help scientists determine specific patterns of brain activity associated with different kinds of images.
The California researchers tested brain activity by having two volunteers view hundreds of pictures of everyday objects, like people, animals, and fruits. The scientists used an fMRI machine to record the volunteers' brain activity with each photograph they looked at. Different objects caused different regions of the volunteers' brains to light up on the scan, indicating activity. The scientists used this information to build a model to predict how the brain might respond to any image the eyes see.
In a second test, the scientists asked the volunteers to look at 120 new pictures. Like before, their brains were scanned every time they looked at a new image. This time, the scientists used their model to match the fMRI scans to the image. For example, if a scan in the second test showed the same pattern of brain activity that was strongly, related to pictures of apples in the first test, their model would have predicted the volunteers were looking at apples.
51. What is responsible for processing the information sent by your eyes?
A A small region of the brain.
B The central part of the brain.
C Neurons in the brain.
D Oxygen-rich blood.
52. Which of the following statements is NOT meant by the writer?
A Cells in your brain are called neurons.
B The more oxygen a neuron consumes, the more blood it needs.
C fMRI helps scientists to discover which parts of the brain process information.
D fMRI helps scientists to discover how the brain develops intelligently.
53. "Highlighting the areas of the brain at work" means
A "marking the parts of the brain that are processing information"
B "giving light to the parts of the brain that are processing information"
C "putting the parts of the brain to work"
D "stopping the parts of the brain from working"
54. What did the researchers experiment on?
A Animals, objects, and fruits.
B Two volunteers.
C fMRI machines.
D Thousands of pictures.
55.What is the best title for the passage?
A Mind-reading Machine
B A Technological Dream
C Device that can Help You Calculate
D The Recent Development in Science and Technology
After an absence of thirty years, I decided to visit my old school again．I had expected to find changes, but not a completely different building．As I walked up the school drive, I wondered for a moment if I had come to the right address．The dirty red brick houses had been swept away．In its place stood a bright, modern block．A huge expanse of glass extended (延展) across the face of the building, and in front, there was a well-kept lawn (草坪) where previously there had been “an untidy gravel (沙石) yard”.
I was pleased to find that it was bread time and that the children were all in the playground．This would enable me to meet some members of staff(职员)．On entering the building, I was surprised to hear loud laughter coming from what appeared to be the masters’ common room．I could not help remembering the teachers in my time, all dressed in black gowns (长袍) and high collars (领子)．And above all, I recalled Mr Garston whom we had nicknamed “Mr Ghastly”, the headmaster who had iron discipline(纪律) on staff and pupils alike．I knocked at the common room door and was welcomed by a smiling young man who introduced himself to me as the headmaster．He was dressed casually in a sports jacket, and his cheerful manner, quickly dispelled (驱散) the image of Mr Ghastly．After I had explained who I was, the headmaster presented me to the teachers all of whom were a little younger than himself, and said he would take me round the school.
Here the biggest surprise of all was in store for (在等待)me．Gone were the heavy desks of old with their deeply carved names; gone too, were the dark classrooms with their ink stained, dark brown walls, and their raised platforms for the teachers．The rooms now were painted in bright colors, and the children, far from sitting straight in their places, seemed almost free to do as they liked．I looked with envy(嫉妒) as I remembered how, as a child, I had looked at the blackboard hardly daring to whisper to my neighbor.“Mr Ghastly” must be ______.
| A．the writer’s teacher |
| B．a serious old man |
| C．the strict headmaster |
| D．a naughty boy |
Which of the following statements is NOT true?
| A．He had expected that the school had completely changed. |
| B．In the writer’s time, all the teachers were dressed in black gowns and high collars. |
| C．There was a well-kept lawn in their school when he visited it. |
| D．An untidy gravel yard had disappeared. |
From what is said in the passage, it seems clear that the writer ______.
| A．disapproved of all the changes that had taken place |
| B．felt sorry for the children in the school |
| C．was glad that the school was still the same |
| D．felt that conditions at the school had improved a lot |
Nearly 60 million visitors flooded to the 384 national parks across America every year. And you won’t have to wander far from home to enjoy one of these national treasures, with Michigan’s Isle Royale National Park nearby.
Located 56 miles from Copper Harbor on Michigan’s Upper Peninsula, the park remains a desolate area that can only be reached by tour boat. With the exception of the Rock Harbor Lodge, which offers both rooms with private baths and accommodations in the form of small cottages, the 572,000 acres that make up the 45-mile-long park are rough, threaded with hiking paths that lead to tents-only campsites. You are likely to see a deer crossing mist-covered ponds in search of breakfast, gaze bald eagles flying overhead, or hear a beaver(河狸) clapping its tail on the water. If you are especially lucky, you might even glimpse a grey wolf, nearly dying out from hunting on the mainland.
Plenty of hiking paths open the area to exploration. The 4-mile Stroll Path winds through various trees and offers a tour of the island’s history, including prehistoric Indian mines. The Jungle Path leads to Scoville Point——a perfect picnic spot surrounded on three sides by the shining waters of Lake Superior.
You can also rent a boat at the park’s service center and row down the shore to the Rock Harbor Lighthouse. Here park’s service employees use nets to show how lake fishes used to be caught by the original local people. Their catch ends up on the dinner menu at the Rock Harbor Lodge.
The park is open from mid-April through October; Rock Harbor Lodge is open from Memorial Day weekend until just after Labor Day.The underlined phrase “a desolate area” in the 2nd paragraph probably means ________.
| A．an undeveloped area |
| B．an inaccessible area |
| C．an area deserted by tourists |
| D．an area protected by government |
What can we infer from the passage?
| A．Indians used to hunt grey wolves to make a living. |
| B．Tourists can only visit the park by walking or hiking. |
| C．The number of grey wolves is smaller than that of deer. |
| D．Food provided by Rock Harbor Lodge is shipped from outside. |
What is the main idea of the passage?
| A．Safety tips of the natural park. |
| B．Attractions of the natural park. |
| C．Tourist service of the natural park. |
| D．Environmental protection of the natural park. |
It is said that there’s no such thing as a free lunch, but even if you manage to bag a bargain meal, it will not taste as good as a more expensive choice, according to scientists.
A new study has found that restaurant goers who pay more for their meals think the food is tastier than offered for a smaller price. The experts think that people tend to associate cost with quality and this changes their perception(感知) of how food tastes.
Scientists at Cornell University studied the eating habits of 139 people enjoying an Italian buffet in a restaurant. The price of the food was set by the researchers at either $4 or $8 for the all-you-can-eat meal. Customers were asked to rate how good the food tasted, the quality of the restaurant and to leave their names.
The experiment showed that the people who paid $8 enjoyed their meal 11% more than those who ate the “cheaper” buffet. Interestingly those that paid for the $4 buffet said they felt guiltier about loading up their plates and felt that they overate. However, the scientists said that both groups ate around the same quantity of food in total.
Brian Wansink, a professor of consumer behavior at the university, said: “We were fascinated to find that pricing has little effect on how much one eats, but a huge effect on how you interpret the experience.” He thinks that people enjoyed their food more as they associated cost with quality and that small changes to a restaurant can change how tasty people find their meals.
In a previous study, researchers from the university showed that people who eat in bright lighting consume more than people who eat in less brightly lit areas. We can learn from the passage that ________.
| A．there were 139 subjects involved in the new study |
| B．a free lunch might be as delicious as you expected |
| C．the high pricing will change the exact taste of the food |
| D．in the experiment, the price of the food ranged from $4 to $8 |
According to the passage, which of the following factors has an effect on the quantity of food a person consumes?
| A．The taste of the food. |
| B．The price of the food. |
| C．The number of companions. |
| D．The lighting of the restaurant. |
Who will benefit most from the new study?
| A．The person who runs a restaurant. |
| B．The person who often eats outside. |
| C．The person who works on decoration. |
| D．The person who studies in university. |
The passage is intended to ________.
| A．promote marketing methods |
| B．inform readers of a new study |
| C．teach consumers how to eat better |
| D．find the association between cost and quality |
I was twenty-two, and in Bolivia. I’d been to every other country in South America, and now I was set on getting into Chile, the last on the list.
After several days, I reached the hills. It was cold, and even the distant mountains were clear. The days were lonely, but one evening I met Filomeno and his fellow teachers. They tried to persuade me not to go to Chile, saying it was a bad place, and that I would be killed. I didn’t believe them. I knew nothing of the current politics; I just wanted to go there.
So I walked into the mountains, feeling excited, and came to a sign with the word "Chile" on it. A frightening soldier appeared, stuck a gun in my back, and pushed me down a slope to the police station. The police chief then told me, "There’s nothing for you here." I explained that I had come to see this beautiful country. But he was annoyed.
In the evening they filled me with food. There was laughter, and I was less tense. Then the police chief took me to a tiny cell. I lay down on the mattress (垫子). Even though I had no light and none of my possessions, I felt euphoric. At least I had arrived! And what a story I’d have to tell! The next morning I was released, and I was told that Chile didn’t want me. Throwing my belongings into my backpack, I shouted and screamed at the soldiers. After all this effort I was being sent home! I stomped (以重踏步方式走) towards Bolivia expecting to feel a bullet. But I’d be back! I told myself.
The author went to Chile to ______.
| A．visit his friend Filomeno | B．settle there forever |
C．complete his trip plan | D．risk his life |
The underlined word "euphoric" in Paragraph 4 most probably means "______".
| A．terrible | B．shamed | C．bored | D．excited |
According to the last paragraph, the author lost his temper because ______.
| A．he was prevented from entering Chile |
B．he was badly treated by the soldiers in Chile |
C．it was his last chance to travel |
D．his friends had stopped him from going to Chile |
What is the passage mainly about?
| A．An exciting fight with soldiers in Chile. |
B．How the author escaped from Chile. |
C．An adventure in Chile. |
D．Why the author went to Chile. |
Everybody hates it, but everybody does it. A recent report said that 40％of Americans hate tipping. In America alone, tipping is a $16 billion-a-year industry. Consumers acting politely ought not to pay more than they have to for a given service. Tips should not exist. So why do they? The common opinion in the past was that tips both rewarded the efforts of good service and reduced uncomfortable feelings of inequality. And also, tipping makes for closer relations. It went without saying that the better the service, the bigger the tip.
But according to a new research from Cornell University, tips no longer serve any useful function. The paper analyzes numbers they got from 2,547 groups dining at 20 different restaurants. The connection between larger tips and better service was very weak. Only a tiny part of the size of the tip had anything to do with the quality of service.
Tipping is better explained, by culture than by the money people spend. In America, the custom came into being a long time ago. It is regarded as part of the accepted cost of a service. In New York restaurants, failing to tip at least l5% could well mean dissatisfaction from the customers. Hairdressers can expect to get l5%-20%, and the man who delivers your fast food $2. In Europe, tipping is less common. In many restaurants the amount of tip is decided by a standard service charge. In many Asian countries, tipping has never really caught on at all. Only a few have really taken to tipping.
According to Michael Lynn, the Cornell papers' author, countries in which people are more social or outgoing tend to tip more. Tipping may reduce anxiety about being served by strangers. And Mr. Lynn says, “In America, where people are expressive and eager to mix up with others, tipping is about social approval. If you tip badly, people think less of you. Tipping well is a chance to show off." This passage is mainly about ________.
| A．different kinds of tipping in different countries |
| B．the relationship between tipping and custom |
| C．the origin and present meaning of tipping |
| D．most American people hate tipping |
Which of the following best explains the underlined phrase "caught on"?
| A．become popular. | B．been hated. |
| C．been stopped. | D．been permitted |
Among the following situations, in your opinion, who is likely to tip most?
| A．A Frenchman just quarreled with the barber who did his hair badly in New York. |
| B．An American just had a wonderful dinner in a well known restaurant in New York. |
| C．A Japanese businessman asked for a pizza delivery from a Pizza Hut in New York. |
| D．A Chinese student enjoyed his meal in a famous fast food restaurant in New York. |
We can infer from this passage that ________.
| A．tipping is no longer a good way to satisfy some customers themselves |
| B．tipping is especially popular in New York |
| C．tipping in America can make service better now |
| D．tipping has something to do with people's character |
粤公网安备 44130202000953号