练习册

  • 练习册
  • 试题
    精英家教网 > 初中英语 > 题目详情
    Since the 1970s, scientists have been searching for ways to connect the brain with computers. Braincomputer interface(BCI) technology could help people with disabilities send commands to machines.
    Recently, two scientists, Jose Millan and Michele Tavella from the Federal Polytehnic School in Lausanne, Switzerland, show 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 body cells(细胞). These send signals through the spinal cord(脊髓) to the body part to give us the ability to move. But spinal cord injuries(脊柱受伤) or other conditions can prevent these weak electrical signals from reaching the body part.” Tavella says. “Our system allows disabled people to communicate with outer world and also to control machines.”
    The scientists 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 finds meanings of the signals and commands the wheelchair with an engine. The wheelchair also has two cameras that tell 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 finds meanings of brain signals and turns them into simple commands.” The practical possibilities that BCI technology offers to disabled people can be grouped in two kinds: communication, and controlling objects. 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 get advantages from. And the other is sure that they can use the technology for long.
    小题1:BCI is a technology that can________.
    A．help to make computer systems more modern
    B．connect the human brain with computers
    C．help the disabled to be healthier
    D．control a person’s thoughts
    小题2: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
    小题3:The team will test with real patients to_________.
    A．make money from them
    B．prove the technology useful to them
    C．make them live longer
    D．learn about their physical condition
    小题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 Sickness

    小题1:B
    小题2:C
    小题3:B
    小题4:C

    试题分析：短文大意：这篇短文主要讲述了将人脑同电脑连接起来，以帮助那些残疾人解决一些生活问题的技术。文中简单的介绍了这种技术的基本原理和科学家为此进行的努力。
    小题1:细节理解题。根据第一段Since the 1970s, scientists have been searching for ways to connect the brain with computers. 描述，可知这种技术指的是，将人类大脑和电脑联系起来的技术。故选B。
    小题2:细节理解题。根据This head cover picks up the signals from the scalp(头皮) and sends them to a computer. The computer finds meanings of the signals and commands the wheelchair with an engine.描述，可知信号首先从头皮传送到这顶帽子，然后发送到电脑，电脑分析这些信号表示的含义，再向轮椅发出指令。故选C。
    小题3:细节理解题。根据短文最后一段描述，可知这个团队在病人身上试验的目的是为了验证这项技术是否有用。故选B。
    小题4:标题归纳题。阅读短文可知这篇短文主要讲述了将人脑同电脑连接起来，以帮助那些残疾人解决一些生活问题的技术，故选C，脑机接口技术对于残疾人来说意味着更多的自由。
    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：初中英语 来源：不详 题型：阅读理解

    What is color? Why do some of the things around us look red, some green, others blue?
    Colors are really made by reflected(反射)light(光). We see color because most of the things reflect light. Something is red, because it reflects most of the red light. In the same way, if something is green, it reflects most of the green light. If something reflects all light, it is white. If it doesn‘t reflect any light, it is black.
    Some of the light is reflected and some is taken in(吸收)and turned into(变成)heat.The darker the colour is, the less light is reflected, the more light is taken in. So dark-colored(深色的)clothes are warmer in the sun than light-colored(浅色的) clothes.
    小题1:When something reflects light, we can_______.
    A．see its colorB．see its heat　　
    C．not see its colorD．see nothing
    小题2:Something looks white because it reflects______.
    A．some lightB．no lightC．all lightD．most light
    小题3:The dark-colored clothes are warm because______is taken in(吸收).
    A．more lightB．less lightC．more colorD．less color
    小题4:.In summer_____make people feel cool.
    A．dark-colored clothesB．red-colored clothes
    C．green-colored clothesD．light-colored clothes
    小题5:What’s the best title(题目)of this passage?
    A．Dark colorB．ColorC．HeatD．Clothes

    查看答案和解析>>

    科目：初中英语 来源：不详 题型：阅读理解

    阅读下面短文，根据短文内容完成句子。
    Do you know that each child in school catches six to ten colds every year? Though there is no cure for colds, there are some suggestions for you to avoid getting a cold.
    First, you can avoid catching a cold by practicing healthy habits. Begin by eating healthy foods. Eat lots of fruits and vegetables and drink milk and juice. Other healthy habits include getting plenty of sleep at night and lots of exercise.
    Next, you should try to avoid contact with the viruses that cause colds. If you can, stay away from large crowds. When people cough(咳嗽) and sneeze(打喷嚏), the cold virus goes into the air. Do not share a drinking cup, fork, or spoon with someone else because that could spread the virus. Washing you hands is also a good way not to catch a cold. The cold virus may be on the things like telephones and money. Shaking another person’s hand could even spread the virus. By washing your hands, you can stop the virus from infecting(传染).
    Following the suggestion above until doctors find a way to stop the viruses that cause colds.
    小题1: Each child in school catches    colds every year.
    小题2:Though there is no cure, there are some     for you to avoid getting a cold.
    小题3:When people cough and sneeze, the cold virus    the air.
    小题4:You’d better not share a drinking cup with someone else because      .
    小题5:By washing your hands, you can       from infecting you.

    查看答案和解析>>

    科目：初中英语 来源：不详 题型：阅读理解

    It’s duty of every man to work. The life of a lazy man is of no use to himself and to others. If the man is too lazy to work, he will usually become a not useful man. Everyone, when he is young, should learn some useful work.
    But it’s not enough for a man to learn some kind of work. He should put his heart and soul (精力) into his work, and not waste his free time. “Work while you work and play while you play” is as good rule for young people as old.
    There is no better to help to diligence than the habit of early rising, and this, just like all other good habits, is most easily formed in youth (青年). There is an English say “Lost time never returns.” This means that everybody must be diligent, and make good use of time. One must study hard when one is young so that one can make great progress, succeed in life and become useful to one’s country. So we can say that diligence is the mother of success.
    小题1:The underlined word “diligence” in the third paragraph means “ ________” in Chinese.
    A．惜时B．勤奋C．失败D．智慧
    小题2:If a man wants to be of useful himself and to the people, he should __________.
    A．learn some useful work
    B．do something in his free time
    C．put his heart and soul in everything
    D．try his best to work without rest
    小题3:In order to learn to be diligent, it’s very important for young people to learn to ________.
    A．work while you work and play while you play
    B．work all the time without playing
    C．form the habit of getting up early
    D．learn some good subjects
    小题4:One will be successful in life if he _____________ when he is young.
    A．spend more time learning
    B．is diligent in his study
    C．loves his school
    D．gets up early
    小题5:Which of the following may be the best title for this passage?
    A．Lazy boy can learn to be diligent
    B．Young people should rise early
    C．Diligence, the mother of success
    D．Lost time never returns

    查看答案和解析>>

    科目：初中英语 来源：不详 题型：阅读理解

    In one way, it may be thought that failure（失败）is a part of life. In another, failure may be regarded as a step towards success.
    The "spider-story" is often told as an example of this. Robert Bruce, leader of the Scots in the 13th century, was hiding in a hole on a hill from the English. He watched a spider(蜘蛛) making a web. Bruce is said to have got confidence from this and to have gone on to beat the English. Edison, too, the inventor of the light bulb(电灯泡) , made hundreds of models that failed before he found the right way to make one.
    So what? First, always think about your failure. What caused it? Were you in high spir¬it then? What can you change so that things will go right the next time?
    Second, is the goal(目标) you are trying to reach the right one? Try to do some thinking about what your real goals may be. Think about this question: "If I am successful in this, where will it get me?" This may help to prevent failure in the things you shouldn't be doing anyway.
    The third thing to remember about failure is that it's a part of life. Learn to "live with yourself” even though you may have failed. Remember, "You can't win them all. “
    小题1:Robert Bruce was mentioned in the passage to show that        .
    A．people who fail are not lonely
    B．animals can help people sometimes
    C．nature will help us if we are hard-working
    D．confidence is important for one to be successful
    小题2:Edison's example shows us that        .
    A．he liked to do other kinds of work
    B．he invented many kinds of light bulbs
    C．failure may be a way towards success
    D．he was a man of many important inventions
    小题3:If you are not sure about what success will get you, you'd better         .
    A．change your goalB．go on with your goal
    C．not care for thatD．work even harder on your goal
    小题4:It can be learned from the passage that        .
    A．one should try not to fail
    B． one's failure is another's success
    C．one should take failures seriously
    D．one should learn lessons from failures
    小题5:This passage is mainly about        .
    A．two great men
    B． two sides of failure
    C．ways to keep away from failure
    D． the right attitude(态度) towards failure

    查看答案和解析>>

    科目：初中英语 来源：不详 题型：阅读理解

    As we know, it is not easy to build a satellite(卫星). Building a traditional satellite usually takes years. The costs can be as high as $250 million or more. Most members of the design teams have worked in the field for a long time. They hold advanced degrees(学历) in math, science, or engineering.

    But things are changing. High costs, unusual educational needs and long start-up times are no longer an obstacle(障碍) to space exploration. The scientists have developed a new type of tiny, inexpensive earth-orbiting(轨道) satellite.
    So far, college students have built and launched(发射) several cube-shaped satellites, or CubeSats. At least 15 more are ready to go. Those already in orbit take pictures, collect information and send it back to the earth, just as regular satellites do.
    But you might not even have to wait until you get to college to start designing and building your own satellite. A new program called KatySat aims to get teenagers to take part in. When kids understand what satellites can do, the kinds of ideas they’ll come up with may be countless.
    Education isn’t the only aim of CubeSats because these tiny, technology-filled boxes are  inexpensive to build and can be put together quickly, they’re perfect for testing new technologies that might one day be used on major space tasks.
    The biggest challenge now is to find ways to bring the satellites back to the earth after a year or two. Or space junk could gradually increase because CubeSats become more popular.
    Nowadays, college and high school students are getting a chance to learn what it takes to explore in space. Someday—perhaps a lot sooner that you imaging—you might get to design, build and launch your own satellite. If you do, you’re sure to have fun. And you might also get crazy about science for life.
    小题1:Building a traditional satellite __________.
    A. costs $250,000          
    B. needs college students      
    C. takes quite a long time
    小题2:Compared with the traditional ones, the new satellites __________.
    A. need long start-up times    
    B. are cheap and small-sized   
    C. collect more junk in orbit
    小题3:The underlined word “countless” in Paragraph 4 probably means “__________”.
    A. 无用的                   B. 无价值的             C. 无数的
    小题4:According to the passage, which of the following is true?
    A. CubeSats could possibly cause pollution in space.
    B. Scientists designed CubeSats for kids to play with.
    C. Students can’t design satellites without college education.
    小题5:The purpose of the author writing the passage is __________.
    A. to tell us that satellite technology can also be learned by kids
    B. to show that high technology brings a big change in kids’ life
    C. to tell us that kids must study hard to learn satellite technology

    查看答案和解析>>

    科目：初中英语 来源：不详 题型：阅读理解

    Our factories and homes burn coal and oil. Every year we have forest fires somewhere. Many scientists believe that the climate is changing.
    The earth will perhaps be warmer by about 7 degrees centigrade. At the South Pole and the North Pole, the ice will melt (融化). The sea level (海平面) will rise by about 7meters. As a result, water will cover cities like London, Tokyo and New York. Some ports and towns along the coasts will disappear under water.
    Some other scientists think that the dust, smoke and pollution from coal, wood and oil fires will block out the sunrays(紫外线). Then the earth will become colder and great sheets of ice will cover Europe and North America.
    When chemicals in the air mix with rain, we have acid (酸) rain. Acid rain can bring us great harm. It destroys forests and kills life in lakes and rivers.
    People are beginning to see how serious the problem is. They find it important to work with nature instead of against it. They are trying to save the earth in many different ways. But one of the most important things to do is to make people understand that saving the earth is saving ourselves.
    小题1:Some scientists believe that          .               
    A. the earth is growing warmer
    B. we can find oil in our forests
    C. we have to burn down the forests every year
    小题2:Ice at the poles will          if the earth gets warmer.
    A. cover cities like London and Tokyo
    B. raise the sea level by 7 degrees
    C. become water and make the sea level rise                
    小题3:Acid rain          .
    A. brings great changes in our climate
    B. kills pests in lakes and forests
    C. kills the fish in rivers and lakes                        
    小题4:What can we learn from the third paragraph?
    A. The dust together with pollution from coal, wood and oil fires will bring us more heat from the sun.
    B. The sunrays will come more because of the dust and pollution from fires.
    C. As a result of the dust and pollution from coal, wood and oil fires, the earth will become colder.                                                                  
    小题5:Which statement is TRUE?
    A. People have come to know the importance of working with nature.                
    B. All the scientists agree that our earth is sure to become warmer and warmer.
    C. The sea level will rise if the earth gets colder.

    查看答案和解析>>

    科目：初中英语 来源：不详 题型：阅读理解

    Mark began to introduce the guest speaker to the listeners, but then stopped for a while. He had forgotten her name.
    Barbara hid her valuable things when she went on vacation. When she came back, she couldn’t remember where she’d put them.
    Perhaps you’ve had such experiences like these. Most people have. But most of them haven’t realized that they have a memory problem. Neither do they know a simple but important fact: Memory can be improved. If you just accept that, the following will show you how.
    First, relax. If you are over worried about something, you’ll forget it. If you keep telling yourself that your memory is bad, your mind will come to believe it and you won’t remember things. When you forget something, don’t follow up with saying like “Oh, my god! I always forget things! ” Such words will have a bad result on you and your memory.
    But relaxing isn’t enough. To improve your memory, you’ll need to take an active role. Like your body, your memory can be made strong through exercise. Look for opportunities to exercise your memory. For example, if you’re learning a language, try to actively remember a lot of new words.
    If you don’t take notice of things actively, you won’t remember them. So, you can make pictures of what you see in your mind every day. For example, don’t just put your keys down! If you want to find them again, make a mind picture of the place where you’re putting them.
    小题1:The first two paragraphs just tell us ________.
    A．examples of memory problems
    B．Barbara was a very rich person
    C．language problems of two persons
    D．Mark often forgot his friends’ names
    小题2:When you forget things, you ________.
    A．must be too careless
    B．must accept the fact
    C．shouldn’t lose confidence in your memory
    D．should keep telling yourself that your memory is bad
    小题3:The underlined word “opportunities” in the fifth paragraph means “________.”
    A．chancesB．doctorsC．placesD．projects
    小题4:According to the article, ________ can make your memory better.
    A．doing sports every day
    B．talking to your friends
    C．realizing your memory problems
    D．making mind pictures of what you see
    小题5:The purpose of the article is to help you________.
    A．introduce the guest
    B．improve your memory
    C．remember new words
    D．forget unhappy things

    查看答案和解析>>

    科目：初中英语 来源：不详 题型：阅读理解

    阅读下列短文，根据短文中的信息完成文后表格。（每空一词）
    Have you had a headache during a test? Have you ever been so worried about something that you have a headache or even can’t sleep at night? If so, then you know what stress is. Stress is what you feel when you are worried about something. This worry in your mind can make your body feel bad. You may feel angry, sad, scared, or afraid——all of which can give you a stomachache or a headache.
    However, there are different kinds of stress. Some kinds of stress are good and others are bad. Good stress might happen when you’re called to answer questions in class or when you have to give a speech. This kind of stress can help you to get things better done. For example, you may do a better job on your test if the stress pushes you to prepare better before the test.
    On the other hand, bad stress can happen if the stress lasts too long. You may not feel well if your parents are fighting, if a family member is sick, if you’re having problems at school, or if anything else makes you unhappy every day. That kind of stress isn’t going to help you. And it can actually make you sick.
    The best way to fight the stress is to have a balanced life. Make sure you keep your SELF in mind: Sleep, Exercise, Leisure（休闲）, and Food. If you get enough sleep and eat properly, and if you exercise and leave time for fun, you’ll probably feel less stressed.
    Title: Face the Stress
    Meaning of stress
    		Stress is a   小题1:  when you are worried about something.
    Possible effect
    		You may feel uncomfortable in your   小题2:  and body.
    Different kinds
    		Good stress
    		It might happen when you have to speak in public.
    It will be more helpful for you to do the job successfully.
    It makes you prepare better before doing the job.
    Bad stress
    		It might happen if your stress   小题3:  too long.
    You may not feel well with the sick of a family member, problems at school or something else that worries you every day.
    It might stop you from getting your work well done.
    How to keep stress   小题4: 
    		Have a balanced life.
    Have enough sleep and have proper food.
    Take exercise and have time to   小题5:  yourself.

    查看答案和解析>>

    同步练习册答案