Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne, Switzerland, demonstrated (展示) 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 vehicle and guided it with his thoughts.
“Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles 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 external world and also to control devices.”
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 interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.
Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. 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 guarantee that they can use the technology over long periods of time.
1. BCI is a technology that can ________.
| A．help to update computer systems |
| B．link the human brain with computers |
| C．help the disabled to recover |
| D．control a person's thoughts |
| A．By controlling his muscles. |
| B．By talking to the machine. |
| C．By moving his hand. |
| D．By using his mind. |
| A．scalp→computer→cap→wheelchair |
| B．computer→cap→scalp→wheelchair |
| C．scalp→cap→computer→wheelchair |
| D．cap→computer→scalp→wheelchair |
| A．make profits from them |
| B．prove the technology useful to them |
| C．make them live longer |
| D．learn about their physical condition |
| 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．Robotic Vehicles Could Help to Cure Brain Injuries |
2 . The story of chocolate begins with the discovery of America in 1492. Columbus was the first European to come into contact with cacao. Columbus was struck by how much value the Indians placed on them as he did not know the beans were used by currency. It is unlikely that Columbus brought any of these beans back to Spain and it was not until about 25 years later that Cortez grasped the commercial possibilities when he found the Aztecs using the beans to make the royal drink “chocolate”.
The Spanish, in general, were not fond of the bitter drink so Cortez and his followers made it more palatable by adding cane sugar and later cinnamon and vanilla were added. Spanish monks let the secret out back home and, although the Spanish hid it from their neighbors for a hundred years, finally chocolate’s popularity grew until it was their fashionable drink at the French court and the wise choice of customers at London meeting houses.
The cacao tree is strictly a tropical plant only in hot, rainy climates. Thus, its cultivation is limited to countries not more than 20 degrees north or south of the equator (赤道). The cacao tree is very delicate and sensitive. It needs protection from the wind and requires a fair amount of shade under most conditions. This is true especially in its first two or three years of growth. A newly planted young cacao tree is often sheltered by a different type of trees. It is normal to plant food crops for shade such as bananas, plantain, coconuts or cocoyams. Rubber trees and forest trees are also used for shade. Once established, however, cacao trees can grow in full sunlight, provided there are fertile soil conditions and intensive farming. With cutting and careful cultivation, the trees of strains will begin bearing fruit in the fifth year. With extreme care, some strains can be stimulated to produce good crops in the third and fourth year.
The process of turning cacao into chocolate hasn’t changed much since the Swiss made the major breakthroughs in the process in the late 1800s. First the beans go through a process of fermentation ( 发酵 ) and drying. They are then sorted by hand before cleaning and then roasting. Winnowing ( 风 扬 ) follows which removes the hard outer layers and leaves what is as the “grains”. A crushing and heating process known as Hunte’s Process is then used to remove nearly half of the cocoa butter from the nibs. This makes unsweetened chocolate. Basic eating chocolate is made from a mixture of the unsweetened chocolate with some of the cocoa butter along with other ingredients such as sugar and vanilla. The resulting product is then “purified” and this purifying gives chocolate the silky texture that we know so well. The finished result is then shaped, cooled, packaged by machine, distributed, sold and of course, eaten!
1. Why didn’t Columbus bring beans back to Spain at once when he found cacao?| A．Because he couldn’t afford to buy the cacao bean. |
| B．Because he didn’t know how to turn cacao bean into chocolate. |
| C．Because he was not aware of the monetary value of cacao bean then. |
| D．Because Spaniards then didn’t favour the chocolate that the Aztecs originally drank. |
| A．affordable | B．agreeable | C．patent | D．portable |
| A．Cacao trees need a lot of looking after to be used commercially. |
| B．Cacao trees require hot, rainy climates and adequate sunlight. |
| C．Cacao trees won’t produce fruit until the fifth year. |
| D．Cacao trees can grow well in all continents. |
① The chocolate is reheated to melt it, put into patterns and then cooled to make its final shapes.
② The beans are harvested on the farm.
③ Some cocoa butter is then obtained using Hunte’s Process to make cooking chocolate.
④ The cooking chocolate is then mixed with other ingredients to make the various types of eating chocolate available today.
⑤ The beans are winnowed after fermentation and drying and these two processes produce the grains.
⑥ The finished product is wrapped, sent to shops and then sold.
| A．②①③④⑤⑥ | B．②③①⑤④⑥ | C．②④⑤①③⑥ | D．②⑤③④①⑥ |
3 . Being a young boy, I began to learn what people said was not always what they really meant or felt. And I knew it was possible to get others to do what I wanted if I read their real feelings and responded suitably to their needs. At the age of eleven, I sold rubber door-to-door after school and quickly worked out how to tell if someone was likely to buy from me. When I knocked on a door, if someone told me to go away but their hands were open and they showed their palms (the inside surfaces of their hands), I knew it was safe to continue because they weren't angry although they may have a dismissive(不屑的) attitude. If someone told me to go away in a soft voice but used a pointed finger or closed hand, I knew it was time to leave.
As a teenager, I became a salesperson, and my ability to read people earned me enough money to buy my first house. Selling gave me the chance to meet people and study them close and to know whether they would buy or not.
I joined the life insurance(保险)business at the age of twenty. And I went on to break several sales records for my company, becoming the youngest person to sell over a million dollars’ worth of business in my first year. This achievement allowed me to become a member of the well-known Million Dollar Round Table(MDRT), which recognizes the world’s top achievers in life insurance. I was lucky that the skills I’d learned as a boy in watching body language while selling could be used in this new area, and were directly related to the success I could have in any business closely connected with people.
1. Which of the following meant the author must give up the rubber sale?| A．A customer’s gentle voice. | B．A customer’s open palms. |
| C．A customer’s finger shape. | D．A customer’s sign of anger. |
| A．To prove the magic of his studying body language |
| B．To show off his unusual insurance-selling achievements |
| C．To attract more people to buy his life insurance |
| D．To simply let readers know about his good luck |
①He bought his first house
②He got the chance to meet people and watch body language
③He became a member of MDRT
④He broke the first sales record for the insurance company
| A．①②④③ | B．②①④③ | C．①④②③ | D．①④③② |
| A．The study of selling products. | B．The life insurance business.. |
| C．The research of body language. | D．The work for the MDRT |
| A．intelligent but overconfident | B．open-minded and determined |
| C．thinking and sharp-eyed | D．grateful and gentle |
4 . A ship that sank off the coast of California decades ago was recently reconstructed in detail. The 3D digital model even included hundreds of sponges (海绵动物) that have gathered on the ship’s surface since it sank.
Named American Heritage, the supply ship sank in Santa Monica Bay on May 4, 1995, and for decades its exact location was unknown. Researchers with the Monterey Bay Aquarium Research Institute (MBARI) spotted a strange shape in that area in 2008. But it wasn’t until May 2018 that MBARI scientists identified its exact location and mapped the site in detail, showing what appeared to be a shipwreck (失事船只).
Even then, the identity of the shipwreck was uncertain. Yet another MBARI team revisited the location to do further exploration. They sent remotely operated vehicles (ROVs) and took photos of the damaged ship. Though it was covered with deep-sea sponges and other animals, the scientists were able to spot letters spelling out its name, confirming that the shipwreck was American Heritage.
As one of the MBARI scientists who found American Heritage, chief ROV pilot Knute Brekke had worked on the ship before. And he was on duty with the diving company American Pacific Marine — the owner of American Heritage — the night the ship began taking in water and eventually sank.
MBARI spokesperson Kim Fulton -Bennett said to Live Science about the discovery, “The model is not complete, as floating ropes and poor visibility kept the pilots from getting too close to the wreck. But the 3D reconstruction is detailed enough to show that American Heritage is now home to thousands of sponges. Shipwrecks often turn into the shelter for diverse communities of ocean life.”
1. What is the main idea of the text?| A．A valuable treasure was discovered. |
| B．Special sponges were found under sea. |
| C．3D model reconstructed a sunken ship. |
| D．A sunken ship was gotten out of water. |
① Something strange was found in the area.
② ROVs were sent under sea to take photos.
③ A ship sank in Santa Monica Bay.
④ The identity of the ship was confirmed.
⑤ Scientists tried to locate the shipwreck.
| A．②③⑤④① | B．③①⑤②④ |
| C．⑤③①④② | D．④③①②⑤ |
| A．He was familiar with the sunken ship. |
| B．He was in charge of a diving company. |
| C．He was responsible for the rescue work. |
| D．He was the first one to witness the accident. |
| A．Critical. | B．Doubtful. | C．Amazed. | D．Objective. |
5 . I am a parent of a disabled teenager. My son is in and out of hospital and school. His learning disabilities and behaviour issues are a barrier for him, and he is teased on campus. At home, he swears and punches me.
He is on a waiting list for his disorder which contributes to his anxiety. Meanwhile, there are hospital appointments to manage, at least four consultants on the go, and an imminent transfer to adult services. The bureaucracy of caring keeps me busy.
I used to work in the theatre industry but had to quit when my son kept getting excluded from school. I never expected that my life would turn out like this. But now, amazingly, I am doing a PhD at a Russell Group university，looking at nonwhite protagonists in historical drama. It is fascinating: underrepresented characters!Hidden histories! Diversity!
I am starting to win awards for my research and I feel like a success story. Almost. There's just one problem: I can't get funding. I keep missing out on studentships and scholarships. These awards—which are mainly funded by research councils or universities directly—are worth about ￡14，000－￡16，000 a year and usually include a fee waiver (saving a further ￡5，000). That's a lot of money.
But the funding tends to go to students half my age with straightA academic results—not to people like me, who have taken an unusual path to academia. When I was turned down for the last studentship I applied for, I asked why. The decision maker—a professor in my department and the head of a research institute—told me “it all comes down to excellent academic results”．
They don't say this on the application forms: it's all about the originality of your project, your research statement, your supervisor's supporting statement, the panel that considers you, the level of competition. But when it comes down to it, this is clearly what they want. Someone with my background is never going to get a studentship if the decisive criteria are undergraduate and master's results.
When I started my PhD and realised that I would need financial help, I went to the student advice office and told them that I am a carer. They asked what that meant and then offered me advice on benefits, but not funding. I went to the student union advice service—they referred me back to student advice. I went to the graduate school. Same response. I spoke to a vice dean and a chaplain. I had to tell them what a carer is. You get the picture. I was invisible. So I gave up, decided to apply annually for the studentships and kept my parttime job.
UCAS announced this year that young carers will now be able to identify themselves in their applications, so that universities will be able to support them. But how is this going to happen if staff at these institutions don't even know what a carer is?
The student welfare vicepresident at the union has finally agreed with me that carers are an undersupported and underrepresented group on campus. We are going to ask student records to add an option to the equality and diversity monitoring section, so that we can identify as carers and hopefully raise awareness. Wish us luck.
1. Put the following events in the correct order.a. The author won awards for her research.
b. The author spoke to a vice dean and a chaplain.
c. The author decided to apply annually for studentships.
d. The author started her PhD.
| A．dabc | B．dcba |
| C．cdab | D．cdba |
| A．she has a disabled son | B．her academic results were not good enough |
| C．the bureaucracy of caring kept her busy | D．the competition was too fierce |
| A．the writer likes reading success stories |
| B．the writer is a nonwhite woman |
| C．carers deserve our attention and help |
| D．carers are favored in the process of application and enrollment |
| A．Only undergraduates and masters can get the studentship. |
| B．In spite of her son's illness, the writer continued to work to feed her family. |
| C．The writer shows great interest and enthusiasm in her academic research. |
| D．The writer's disabled son does not respect his mother. |
| A．call on more people to care about disabled teenagers |
| B．complain about the barriers she met in getting funding |
| C．inform the readers of a carer's difficulties |
| D．give advice on how to get a studentship |
The Royal Swedish Academy of Sciences awarded the Nobel Prize in Chemistry 2020 to two women scientists, Charpentier and Doudna, “for the development of a method for gene editing."
The discovery of these genetic scissors was unexpected.During Charpentier' s studies of Streptococcus pyogenes, one of the bacteria that cause the most harm to humans, she discovered a previously unknown molecule(分子），tracrRNA. Her work showed that tracrRNA is part of bacteria's ancient immune system, CRISPR/Cas. Charpentier published her discovery in Nature in 2011 and described how tracrRNA works with the Cas9 protein(蛋白质）to follow and kill viruses by cutting up their DNA.
Then in that same year,Charpentier began to cooperate with Doudna, an experienced biochemist in RNA.Together, they succeeded in recreating the bacteria's genetic scissors in a test tube and simplifying the scissors' molecular components so they were easier to use.They then reprogrammed the genetic scissors. In their natural form, the scissors recognize DNA from viruses,but Charpentier and Doudna proved that they could be controlled so that they can cut any DNA molecule at a predetermined site. Where the DNA is cut, it is then easy to rewrite the code of life.
Since the CRISPR/Cas9 genetic scissors were discovered in 2012, their use has exploded though there are concerns that the technology could be misused. This tool has contributed to many important discoveries in basic research, and plant researchers have been able to develop crops that withstand mould, pests and drought. In medicine, clinical trials of new cancer therapies are underway,and the dream of being able to cure inherited diseases is about to come true.
1. According to Charpentier's studies of Streptococcus pyogenes, tracrRNA_____| A．can change life's DNA precisely |
| B．causes the most harm to human beings |
| C．is a previously unknown immune system |
| D．works with Cas9 protein to split viruses' DNA |
a. Charpentier began to cooperate with Doudna.
b. Charpentier published her discovery in 2011.
c.Charpentier studied Streptococcus pyogenes.
d. The bacteria's genetic scissors were recreated.
e.The genetic scissors were then reprogrammed
| A．a-b-d-c-e |
| B．c-a-b-e-d |
| C．a-d-e-c-b |
| D．c-b-a-d-e |
| A．Concerns about the misuse of genetic scissors. |
| B．The widely-spread use of the genetic scissors. |
| C．The important discoveries in basic research. |
| D．Contributions to cure for inherited diseases. |
| A．Cooperation:Secret to Success in Scientific Researches |
| B．Genetic Scissors:a Tool for Rewriting the Code of Life |
| C．Charpentier & Doudna:Women Scientists Acknowledged |
| D．The Nobel Prize in Chemistry: a Promoter of Gene Editing |
7 . When photographer Simon Czapp took pictures of a curious five-month-old fox, he soon realized this little fox was attracted by his subject. The clever fox was so curious about the camera equipment that she climbed on top of it. And while she was supposed to be the subject of the shoot, the fox stood on the shutter release button (快门按钮) and took her own frames.
Mr. Czapp visited the New Forest Wildlife Park to capture images of new arrival Jessie. Jessie is a lovely little fox. She has been at the animal park in Ashurst, Hampshire—home to wolves, deer and others in 25 acres of ancient woodland after being abandoned by her mother.
Mr. Czapp said, “Jessie was very playful and curious and not shy at all in front of the camera. Soon after I arrived she was chewing my shoes and everything seemed to be a game to her. Then she started exploring the camera I had set up on a tripod (三脚架). She stood on her back legs to look at the back of the camera. She balanced her front paws on it and at one point knocked it over. ”
He put the camera back on the tripod and Jessie soon jumped back up. At one point she had all four paws on the camera and was keeping her balance. Mr. Czapp added, “She jumped up there several times and I realized it could make a good picture. As I was leaving away with the public’s viewing window (取景窗) behind me, I thought I heard the camera go off but didn’t think much of it. However, when I checked the memory card afterwards, I was amazed to see Jessie had actually taken two frames of me photographing her. I couldn’t believe I had been outfoxed (智取) by a fox! There were some lovely photos of her but she obviously thought the photographer was worthy of a picture too! ”
1. The underlined word “frames” in Para. 1 refers to _______.| A．photographers | B．pictures |
| C．equipments | D．subjects |
a. Jessie pressed the shutter release button, taking her own pictures.
b. Jessie balanced her paws on the camera.
c. Mr. Czapp set up his camera on a tripod.
d. Jessie stood up to look at the back of the camera.
| A．c, d, b, a | B．a, c, d, b |
| C．d, c, b, a | D．b, a, c, d |
| A．Naughty but lovely. | B．Clever but annoying. |
| C．Careful and grateful. | D．Quick but rude. |
| A．Wildlife photographers took photos of wild animals. |
| B．Clever fox took pictures of professional photographer. |
| C．Mr. Czapp showed the fox how to take photos. |
| D．Wild animals enjoy equal rights with humans. |
8 . Looking back on too many years of education, I can identify one truly impossible teacher. She cared about me, and my intellectual life, even when I didn’t. Her expectations were high—impossibly so. She was an English teacher. She was also my mother.
When good students turn in an essay, they dream of their instructor returning it to them in exactly the same condition, save for a single word added in the margin of the final page: “Flawless.” This dream came true for me one afternoon in the ninth course. I had heard that genius could show itself at an early age, so I was only slightly taken aback that I had achieved perfection at the age of 14. Obviously, I did what any professional writer would do; I hurried off to spread the good news. I didn’t get very far. The first person I told was my mother.
My mother is normally incredibly soft-spoken, but when she got angry, she was terrifying. I am not sure if she was more upset by my hubris(得意忘形) or by the fact that my English teacher had let my ego get so out of hand. In any event, my mother and her red pen showed me how deeply flawed a flawless essay could be. At the time, I am sure she thought she was teaching me about transitions (过渡), structure, style and voice. But what I learned was a deeper lesson about the nature of creative criticism.
Creative criticism implies something about who is able to give it, who knows you well enough to show you how your mental life is getting in the way of good writing. They are also the people who care enough to see you through this painful realization. ①
I was lucky enough to find a critic and teacher who was willing to make the journey of writing with me. “It is a thing of no great difficulty,” according to Plutarch, “to raise objections against another man’s speech, it is a very easy matter; but to produce a better in its place is a work extremely troublesome.” Perhaps Plutarch is suggesting something a bit closer to Marcus Cicero’s claim that one should “criticize by creation, not by finding fault.” Genuine criticism creates a precious opening for an author to become better on his own terms—a process that is often extremely painful, but also almost always meaningful.
② My mother said she would help me with my writing, but first I had to help myself. For each assignment, I was to write the best essay I could. Real criticism is not meant to find obvious mistakes, so if she found any—the type I could have found on my own—I had to start from scratch. From scratch. Once the essay was “flawless”, she would take an evening to walk me through my errors. ③
She criticized me when I included little-known references and professional jargon (行话). She had no patience for brilliant but irrelevant figures of speech. Somewhere along the way I set aside my hopes of writing that flawless essay. ④ But perhaps I missed something important in my mother’s lessons about creativity and perfection. Perhaps the point of writing the flawless essay was not to give up, but to never willingly finish. Whitman repeatedly reworked “Song of Myself” between 1855 and 1891. Repeatedly. We do our absolute best with a piece of writing, and come as close as we can to the ideal. And, for the time being, we settle. In critique, however, we are forced to depart, to give up the perfection we thought we had achieved for the chance of being even a little bit better. This is the lesson I took from my mother: If perfection were possible, it would not be motivating.
1. What can we learn from the second paragraph?| A．The author performed perfectly as a professional writer. |
| B．The author didn’t think he was good at writing a flawless essay. |
| C．The author never dreamed of his essay being marked as “flawless”. |
| D．The author was not much surprised at his essay being marked as “flawless”. |
| A．The author’s mother taught him about the structure of a perfect essay. |
| B．The author’s mother pointed out lots of faults in his seemingly perfect essay. |
| C．The author’s mother taught him how to leave a lasting mark on the essay. |
| D．The author’s mother underlined the important style and voice in his essay. |
| A．giving constructive criticism is an easy matter |
| B．criticizing someone is painful and meaningless |
| C．finding fault is better than coming up with a better work |
| D．criticizing someone’s speech is easier than coming up with a better one |
That was when true criticism, the type that changed me as a person, began.
| A．① | B．② | C．③ | D．④ |
| A．generous and strict | B．demanding and caring |
| C．stubborn and loving | D．critical and troublesome |
| A．The Perfect Essay | B．My Dear Mother |
| C．True Criticism | D．The Skills of Writing |
9 . GE’s Bill Run nas a message for anyone who’s confused or doubtful about the company’s new focus on the" Industrial Internet’.The long story made short is that the amount of data being produced by industrial machine” is going to be more than anything you’re ever seen” , and analyzing this data is going to make everyone’s life easier.
Take gas turtbine (涡轮机）at power plants for example. “We’re almost putting a data center on a gas turbine,” Ruh said during a session at GigaOM’s Mobilize conference on Wednesday morning，referring to the hundreds of sensors(传感器）the company is placing on those machines to get data. If those sensors, combined with anyone’s software for managing and analyzing the data, are able to improve efficiency by just one percent, they could save nearly $6 billion a year.
Think about the air travel. Forty-one percent of unplanned downtime for airlines is caused by mechanical errors, Ruh explained, so GE wants to be able to predict when its engines or other airline systems will fail. With this knowledge, carriers can fix problems during scheduled downtime and save everyone's precious time.
Speaking of sensors, Ruh noted just how much potentially predictive data they’re getting. “Using a sensor,” he said,“we could get hundred terabytes(百万兆字节）a day.”
However, he acknowledged that the great effects of the Industrial Internet—cost savings, carbon-footprint reductions and efficiency gains—will come with changes in the employment sector that might not be good for everyone involved. ‘‘Some new kinds of jobs that don’t exist today will get created，”Ruh said. “It takes time and energy for people to get adapted to it.”
1. Which of the following is the best title of the passage?| A．The Industrial Internet—a new kind of machine. |
| B．The Industrial Internet—a large amount of data. |
| C．The Industrial Internet一another name for the Internet. |
| D．The Industrial Internet一a way to get data by sensors. |
| A．the time during which you are upset |
| B．the time during which you have nothing to do |
| C．the time during which a machine is not working |
| D．the time during which the price is very low |
| A．Data—sensors—high efficiency. |
| B．Machines—sensors—high efficiency. |
| C．Sensors一data一high efficiency. |
| D．Sensors一machines一high efficiency. |
| A．More jobs will disappear. |
| B．It brings along some disadvantages. |
| C．Changes will not appear in employment. |
| D．Everyone can adapt to new jobs immediately. |
