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 commands to machines.
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(頭皮)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.
小題1:BCI is a technology that can         .
A.help to update computer systemsB.link the human brain with computers
C.help the disabled to recoverD.control a person's thoughts
小題2: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.
小題3:The team will test with real patients to         .
A.make profits from themB.prove the technology useful to them
C.make them live longerD.learn about their physical condition
小題4: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.Robotic Vehicles Could Help to Cure Brain Injuries

小題1:B
小題2:D
小題3:B
小題4:C

試題分析:
小題1:B 細(xì)節(jié)題。根據(jù)第一段scientists have been searching for ways to link the brain with computers.Brain-computer interface(BCI) technology could help people with disabilities send commands to machines.說明這種機(jī)器正是可以把人腦和計(jì)算機(jī)連接起來的,故B正確。
小題2:D 細(xì)節(jié)題。根據(jù)第三段第一行Tavella operated the wheelchair just by thinking about moving his left or right hand.說明他只是在思考在想,故D正確。
小題3:B 細(xì)節(jié)題。根據(jù)文章倒數(shù)第二段The practical possibilities that BCI technology offers to disabled people can be grouped in two categories說明他們呀把這個(gè)技術(shù)運(yùn)用于人的人上來證明這個(gè)技術(shù)的用途。故B正確。
小題4:C 主旨大意題。文章講述的是這種技術(shù)可以讓人用意念來控制自己的行動(dòng),這對(duì)于那些殘疾人是很都幫助的。故C正確。
點(diǎn)評(píng):文章講述的是這種技術(shù)可以讓人用意念來控制自己的行動(dòng),這對(duì)于那些殘疾人是很都幫助的。本文屬于科普類短文,考生要注意文章中可能會(huì)有較多的生詞,要掃清語言的障礙,首先要有猜測(cè)詞義的能力,同時(shí)要有總覽全文的意識(shí),抓住文章的中心思想。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語 來源:不詳 題型:閱讀理解

Technology: Taking the good without the bad?
Very soon, unimaginably powerful technologies will remake our lives.This could have dangerous consequences, especially because we may not even understand the basic science underlyi ng them.There’s a growing gap between our technological capability and our basic scientific understanding.We can do very clever things with the technology of the future without necessarily understanding some of the science underneath, and that is very dangerous.
The technologies that are particularly dangerous over the next hundred years are nanotechnology (納米技術(shù)), artificial intelligence and biotechnology.The benefits that they will bring are beyond doubt.But they are going to be very, very dangerous.I’m working in the field of artificial intelligence.I have a model design for something that might be 50,000 million times smarter than the human brain.Target date is 2010.The only thing that's not possible in the film Terminator(終結(jié)者) is that the people win.If you're fighting against technology w hich is 50,000 million times smarter than you, you probably will not win.
Nanotechnology.We've all heard of the grey glue problem, that self-replicating nanotech devices might keep on copying until the world has become sticky glue.And certainly in biotechnology, we've really got a big problem because it's converging with nanotechnology and IT.Once you start mixing nanotech with organisms and you start feeding nanotech-enabled bacteria, we can really go an awful lot further than the Borg in Star Trek(星際迷航).And those superhuman organisms might not like us very much.
Eventually these technologies will become routine.That’s a threat to humanity.I don’t think it’s possible to slow it down.So what we need to do is accelerate the scientific research and try to get some extra tools.The problems facing us in the future are getting bigger and bigger.I think if we don’t get some proper science done, the future is hopeless indeed.
小題1:From the text, we know that the author’s greatest concern is         
A.our lack of technological understanding of the process involved
B.our lack of technological capability
C.creating technology without really understanding the basic science
D.Our refusal to face the consequences of the technology we create
小題2:It can be inferred from the text that the author         
A.thinks people overvalue the capabilities of technology
B.is not optimistic that artificial intelligence will always be used positively
C.thinks that we should take science fiction movies more seriously
D.believes artificial intelligence is the greatest threat we face technologically
小題3:Why does the author say it is not possible in the film Terminator that the humans win?
A.Because the power of the technology is exaggerated(夸大).
B.Because the strength of the machines is much greater.
C.Because machines with that much intelligence can easily defeat humans.
D.Because human beings are not courageous enough to win the battle.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

In modern society, receiving systematic college education seems a necessary way for success as a graduate from first-class university may always get more opportunities than others. However, if it is gold, it will shine one day. In this article, we will get to know three most successful people in U.S. who never finished their college education. Following experiences of these successful dropouts may give you some inspiration.
1. Bill Gates
Harvard’s campus paper “Harvard Crimson” called Bill Gates “Harvard’s most successful dropout,” while the rest of the world preferred to name him “the world’s richest man” for more than a decade. Now, even not on the top, he is still among the list of the world’s wealthiest people.Gates entered Harvard in the fall of 1973. Two years later, he dropped out to found Microsoft with friend Paul Allen. And in 2007, he finally received an honorary doctorate from Harvard.
2. Steve Jobs
The iPad, even Buzz Lightyear probably wouldn’t have existed if Steve Jobs stayed in school. Because his family couldn’t afford his college education, Jobs had to drop out of Reed College just after entering for 6 months. Then he found Apple, NeXT Computer and Pixar, which had made great influences on development of modern technique and culture. However, this wizard thought that his brief college education was not worthless.
3. Frank Lloyd Wright
As the America’s most celebrated architect, Wright spent more time on designing colleges rather than attending classes in them. Once spent one year in the University of Wisconsin-Madison, then he left for Chicago and started to learn from Louis Sullivan, the “father of modernism." Wright’ s splendid resume included more than 500 works, most famous of which are Fallingwater and New York City's Solomon R. Guggenheim Museum.
小題1: What does“dropouts”in Paragraph One mean?
A.Hardworking students.B.Very successful students.
C.Students failing to finish their school education.D.Students from poor families.
小題2:Which of the following is right according to Paragraph One?
A.People graduating from famous universities are more likely to get jobs.
B.Many successful people had the experience of giving up their school education.
C.If one has a lot of gold, he will become very rich one day.
D.We should stop our college education to follow in those successful people’s steps.
小題3:According to the writer, Bill Gates _________.
A.is richer than any other man in the world
B.is well-known in Harvard University
C.finally finished his study at Harvard and got a doctorate degree
D.is the only founder of Microsoft
小題4:Which of the following statements can’t be learned from the last two paragraphs?
A.The reason for Jobs’ dropping his college education is that his parents couldn’t pay for it.
B.Jobs thought his six-month college education gave him no help.
C.Wright’s teacher was a very famous artist.
D.Wright is the designer of New York City’s Solomon R. Guggenheim Museum.
小題5: What does the author want to tell us in this passage?
A.Successful people often have unordinary life experience.
B.College education is not so important to one’s success.
C.People from poor families are more likely to give up their college education.
D.Even without college education, one can still achieve success with one’s hard work.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

There is a wonderful story about a young girl who had no family and no one to love her.
One day,feeling very sad and lonely, she was walking through a grassland when she noticed a small butterfly caught in a thorn (荊棘) bush. The young girl carefully released the Butterfly. Instead of flying away, the little butterfly changed into a beautiful fairy. The young girl rubbed(擦) her eyes in disbelief.“For your wonderful kindness,” the good fairy said to the girl,“I will give you any wish you would like.” The little girl thought for a moment and then replied,“I want to be happy.”The fairy  whispered(耳語) in her ear. Then the fairy disappeared.
As the little girl grew up, there was no one in the land as happy as she. Everyone asked her secret of happiness .She would only smile and answer,“The secret of my happiness is that I listened to a good fairy when I was a little girl.”
When she was very old and on her deathbed ,the neighbors gathered around her,they said to her “Tell us, please,” they begged,“Tell us what the good fairy said.” The lovely old woman simply smiled and said,“She told me that everyone, no matter how secure they seemed, no matter how old or young,how rich or poor, had need of me.”
小題1:______ the girl felt sad and lonely.
A.There was nobody to love her so B.There were many friends
C.There was nothing to doD.Seeing the butterfly was caught
小題2: Noticing the butterfly was caught by the thorn,the orphan girl ______.
A.failed to help it release from the thorn
B.felt sorrow,but she didn’t go up to help it
C.fell down on it too
D.helped the butterfly escaped from the thorn
小題3: The butterfly ______ after it was saved by the little girl.
A.flied away
B.changed into a fairy
C.still died
D.was more beautiful than before
小題4:The only thing that the little girl wanted was________.
A.to be richB.to have her own parents
C.to have a lot of friendsD.happiness

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Bursting into the classroom from recess(學(xué)生的課間休息), 15 children take their seats and face the woman they know as Ms. Yang.
“What day is it today?”she asks, in Mandarin(普通話的舊稱) Chinese.
“Confucius’ birthday!”the fifth graders shout in Mandarin.
“Why do we celebrate Confucius’ birthday?”
“Because he’s the greatest teacher in the history of China!”exclaims a brown-haired girl. She too is speaking Mandarin.
English is rarely heard in Lisa Yang’s class at the Chinese American International School(CAIS), despite the fact that few students are native speakers of Mandarin.
The United States is actively trying to increase the group of students in“critical languages”such as Mandarin. The students at CAIS are way ahead in such a trend.
Mandarin explosion in America
Founded 25 years ago, this small private school in San Francisco, USA, does what few other American schools do: It produces fully fluent speakers of Mandarin Chinese, by far the most commonly spoken language in the world.
Mandarin Chinese is suddenly hot in American schools. As China becomes the world’s leading economy sometimes this century, schools in the U.S. are scrambling to add Mandarin to their roster of foreign languages or expand Chinese programs already in place.
“It really is almost unprecedented(無前例的). People are looking at China as a force to be reckoned with…And to ensure that the U.S. has the ability to conduct trade, and to work with the Chinese, certainly having an understanding of Chinese language and culture is an advantage,”said Marty Abbott of the American Council on the Teaching of Foreign Languages(ACTFL)(美國(guó)外語教學(xué)協(xié)會(huì)).
Cultural differences in teaching styles
To develop Chinese-language programs has not been smooth. A shortage of trained teachers has made it difficult for some schools to join the race. When schools do get teachers, they often hire them straight from China, and the teachers usually suffer culture shock when they come to the U.S.
Robert Liu remembers his first two years in an American classroom. It was not an easy adjustment. “In China, students respect their teachers,”he said. Liu found that American students, however, expect an active teaching style. He had to use games to engage them rather than lectures.
To avoid many of the problems with foreign teaching styles, the CAIS has been working with the Chinese government to improve training of teachers who are sent to the U.S.
小題1:Which of the following is the best title?
A.Mandarin speaks to a growing audience in America
B.Chinese-language programs
C.Mandarin Chinese
D.The Chinese American International School(CAIS)
小題2:What kind of problem is the most difficult to adjust in teaching Chinese in America?
A.To adapt to the life there.
B.To communicate with the American students.
C.To get along well with the American students.
D.To be fit for the cultural differences in teaching styles.
小題3:The meaning of the underlined word“scrambling”is similar to      .
A.climbingB.rushingC.changingD.beating
小題4:It can be inferred from the passage that       .
A.the students in Lisa Yang’s class usually speak Chinese
B.there are few American students in Lisa Yang’s class
C.we celebrate Confucius’ birthday because he’s the greatest teacher in the history of China
D.in America the students don’t respect their teachers

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

It is reasonable to say that every teenager can be affected by peer pressure (從眾心理) at some point. Every day, in any high school, peer pressure has a major influence over the behavior of teenagers. It can be as subtle (微妙的) as being persuaded to be late for class or as extreme as a dangerous drug. Whether subtle or extreme, peer pressure can have damaging, sometimes life changing, and even serious results.
“Teens don’t often consider the long-term results that some behavior can cause,” said Terri Price, a researcher. “Peer pressure can be very difficult to handle for many teens because of their fears of not fitting in”. Peer pressure has always been part of teen life, but teens experience it differently than their former generations did in the past. Sources of peer pressure have increased because of the Internet and other electronic communications.
Recognizing peer pressure can be as simple as noticing that you have been asked to do something that you are not comfortable with. “Listen to your instinct (直覺) , which is a sign for whether something is right or wrong. If it feels wrong, then most likely it is. ”says Price.
Teens are in a time of life when they are still discovering who they are. Many teens are influenced by peer pressure because of their insecurities (不安全感). This can make them helpless especially when their self-control is weak or they lack healthy support, causing them to take risky behavior or turn to unhealthy support.
Dealing with peer pressure is a topic of concern for teens. People can say, “Just say no,” but the truth is that the statement is easier said than done.
小題1:The underlined word “it” in Paragraph 2 refers to                .
A.the InternetB.teen life
C.peer pressureD.the fear of not fitting in
小題2:You can know whether a teen suffers peer pressure by watching            .
A.whether he often surfs the Internet
B.whether he can get security
C.whether it is subtle or extreme
D.whether he feels comfortable with it
小題3:Why are teens easily influenced by peer pressure?
A.Because they don’t have the feeling of safety.
B.Because they are afraid of fitting in or being accepted.
C.Because they need support for their health.
D.Because they have nobody to turn to when in trouble.
小題4:According to the passage, we can know that dealing with peer pressure is        
A.easy B.hard C.a(chǎn) new topicD.a(chǎn)n impossible task

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Is there something that you've always wanted to try but just never had the time? Well, make plans to try it now since you are on summer vacation. Not all vacations call for taking a tour bus to take photos of famous landmarks. Some vacations allow you plenty of opportunities to learn.
The most difficult aspect of a learning vacation may be choosing one because the possibilities are endless. If you enjoy cooking, various companies can take you to Italy, France, Spain, Mexico or even Peru. Once there, you can learn to prepare the local cuisine(烹飪). Trips are often planned to fit in with local food festivals or special events.
The term “l(fā)earning vacation” often brings language to mind. The best way to learn a language is in an environment where it's spoken. Study Spanish, French or English. Or attempt a more unusual language like Polish, Estonian or Thai. You'll be able to learn about the country and absorb the culture at the same time.
If you are fond of sports, you can polish your skills or learn new ones. Golf and tennis schools welcome players of all levels. If you want a bigger thrill, you can learn to surf, go climbing or race cars. It's even possible to learn the art and techniques of bull fighting while on vacation!
You can also discover our inner artist.  Many places offer painting classes in different mediums. The scenic locations, of the schools offer plenty of subjects that provide inspiration for practice.
If you prefer capturing the world on film, take a photography vacation. Travel with a small group to photograph beautiful animals or scenery.  You can also practise your technique on people or at historical sights.
Once you decide on a vacation, choose a company carefully.  Request names of recent customers you can contact,  and then ask them for an evaluation. The more you know before you go,  the better prepared you'll be.  Then go out and learn something!
小題1:Why is it hard for you to decide on a learning vacation?
A.Because it is hard for you to make plans.
B.Because the possibilities are unlimited.
C.Because there are many good foods from abroad.
D.Because there're too many food festivals or events.
小題2:The advantage of learning a language in its native country is that ________.
A.the environment is fit for you to use the language
B.you are able to learn the original foreign language
C. native speakers offer you a lot of chances to practise
D.you can learn the language and experience its culture
小題3:Which of the following sports suits you if you don't like thrills?
A.Car racing.B.Playing tennis.
C.Rock climbing.D.Surfing.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Something in chocolate could be used to stop coughs and lead to more effective medicines, say UK researchers.
Their study found that theobromine(可可堿), found in cocoa, was nearly a third more effective in stopping coughs than codeine, which was considered the best cough medicine at present.
The Imperial College London researchers who published their results online said the discovery could lead to more effective cough treatment. “While coughing is not necessarily harmful it can have a major effect on the quality of life, and this discovery could be a huge step forward in treating this problem,” said Professor Peter Barnes.
Ten healthy volunteers were given theobromine, codeine or placebo, a pill that contains no medicine, during the experiment. Neither the volunteers nor the researchers knew who received which pill. The researchers then measured levels of capsaicin, which is used in research to cause coughing and as a sign of how well the medicines are stopping coughs.
The team found that, when the volunteers were given theobromine, the capsaicin needed to produce a cough was around a third higher than in the placebo group. When they were given codeine they needed only slightly higher levers of capsaicin to cause a cough compared with the placebo.
The researchers said that theobromine worked by keeping down a nerve activity(神經(jīng)活動(dòng)), which cause coughing. They also found that unlike some standard cough treatments, theobromine caused no side effects such as sleepiness.
小題1:According to Professor Barnes, theobromine ______.
A.cannot be as effective as codeine
B.can be harmful to people’s health
C.cannot be separated from chocolate
D.can be a more effective cure for coughs
小題2:What was used in the experiment to cause coughing?
A.Theobromine. B.Codeine.C.Capsaicin.D.Placebo.
小題3:We learn from the text that volunteers in the experiment _____.
A.were patients with bad coughs
B.were divided into the three groups
C.received standard treatments
D.suffered little side effects
小題4:Which of the following would be the best title for the text?
A.Codeine: A New Medicine
B.Chocolate May Cure Coughs
C.Cough Treatment: A Hard Case
D.Theobromine Can Cause Coughs

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

We’ve heard about radiation from the damaged nuclear reactors in Japan reaching American shores. Experts say so far there is no reason to worry, and point out that we meet radiation every day. Where and how? NPR’s Renee Montagne posed that question to Peter Caracappa, a radiation safety officer and professor of nuclear engineering.
MONTAGNE: How many things emit radiation?
Dr CARACAPPA: Well, radiation and radioactive material is a part of nature. So everything that’s living has some amount of radiation coming from it—a very small amout. Plus there’s radiation in the ground and the air.
So the extremes are uranium in the soil to bananas?
Yes.
By the way, why do bananas have radiation?
Bananas have a lot of potassium(鉀). And a small amount of potassium naturally is called potassium 40, which is radioactive
What’s the difference between radiation that’s harmful and not harmful?
Well, the term radiation can apply to a lot of different things. But the harmful radiation is ionizing(離子)radiation. It has enough energy that it can make chemical changes in material. We could get ionizing radiation from an X-ray, for example. It’s the kind of radiation that causes cancer.
The broader definition of radiation includes a lot of things that we call non-ionizing radiation. That includes everything like radio waves and visible light and your microwave.
So what then is the largest contributor of ionizing radiation?
For the natural sources of ionizing radiation, actually the biggest chunk of that tends to come from radon(氡), which is a radioactive material that is present in the air. It can become a concern when it builds up in low-lying areas of homes like basements.
Would it be fair to say that most people do not need to worry about the danger of being exposed to radiation?
I would say that the everyday exposure to radioation that we meet contributes an extremely tiny risk to our life or to our health compared to all of the other risks that we meet in our day-to-day life.
小題1:We can infer from the first paragraph that radiation is______.
A.rareB.powerfulC.dangerousD.common
小題2:The passage may be _______.
A.a(chǎn)n interviewB.a(chǎn)n argumentC.a(chǎn) talk show programD.a(chǎn) science report
小題3:Whether radiation is harmful or not depends on______.
A.whether it has a small amount of potassium
B.whether it changes chemical in materials.
C.whether it has energy to change materials
D.whether it is visible in life
小題4:The purpose of writing this passage is to _______.
A.a(chǎn)dvise on how to protect us from radiation
B.a(chǎn)nalyze what causes radiation in daily life
C.warn people of the danger of radiation
D.expect people not to fear everyday radiation

查看答案和解析>>

同步練習(xí)冊(cè)答案