练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情

    Trees are useful to man in three important ways: they give him wood and other useful things, they give him cool places, and they help to stop drought and flood.
    Unluckily, in many parts of the world, man has not found that the third of these points is the most important. Man wants to make money from trees, so he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And also, he is usually too careless to plant and look after new trees. So the forests slowly disappear.
    This does not only mean that man will have fewer trees. The results are even worse: for where there are trees, their roots break up soil-make the rain in-and also bind the soil, thus stopping it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing is left but useless desert.
    1.The most important points of trees to man is ________.
    A. they help him to make money               B. they give him cool
    C. they give him wood and other things       D. they help him to stop drought and floods
    2.In many places forests slowly disappear because ________ .
    A. many trees have been cut down by man
    B. new trees are not well looked after
    C. man has not paid enough attention to planting trees
    D. all the above
    3.Land becomes desert after all trees are cut down because ________ .
    A. roots of trees break up the soil   
    B. there are too many rainfalls
    C. strong winds bring a lot of sand
    D. there are no longer trees to keep the rain and protect the top-soil.
    4.Which title best fits the passage?
    A. Trees and Man                                      B. The Function of Tree Wood
    C. How do People do with Trees?                  D. The Usage of Tree Roots

    小题1:D
    小题2:D
    小题3:D
    小题4:A
    略
    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：高中英语 来源：不详 题型：阅读理解


    Ⅲ 阅读 (共两节，满分40分）
    第一节阅读理解(共15小题；每小题2分，满分30分)
    阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并存答题卡上将该
    项涂黑。
    Increasingly over the last few years,we have become familiar with the range of small electronic devices or  “smart” accessories (附件,饰品 ) . Pocket heart -rate monitors for joggers and electronic maps are just the first examples of many new products that promise to change our lives in all sorts of surprising ways.
    As a scientist at New York University . Rosalind Picard tries out different smart accessories before they go on the market.  One of these was the so-called " frown (皱眉)headband". Rosalind was shocked to realize just how often she frowned. Stuck in a traffic jam recently, Rosalind kept hearing the sounds of the tiny sensor inside the band worn around her forehead -each time she frowned in annoyance, the sensor gave out a signal.
    Another computer scientist , Stevcn Feiner, is working on a pair of glasses that will do more than help you to see .Imagine you want to try a restaurant in a foreign city but you're not familiar with the dishes on the menu.  If you are weanng a pair of Steven's glasses . all yau have to do is glance above the restauran’s doorway and your glasses will immediately become windows to the Tntemet, offering you full details of the meals served inside. The glasses could also be used to help people make speeches,give chefs access to the latest recipes and even provide doctors with
    patient information while they carry out operations.
    At the moment, Steven's invention looks more like a large ski mask than a pair of glasses.
    It's a headset connected to a hand-held computer and a Global Positioning  System  ( GPS ) receiver, which tracks the wearer's position. But he says that these head-worn displays will eventually get smaller and lighter as technology improves.
    And, of course, this new technology has a fashionable as well as a useful application. A chemical engineer named Roben Langer has invented a new microchip that, if put inside a ring,can give off different smells according to a person's mood. That, of course, may or may not appeal to you.  And,in the end , it is  shoppers . not scientiscs , who will determine which of these smart accessories will succeed as fashionable items and which are sure tO join history's long list of crazy inventions.
    It is clear,however ,that as computers get smaller and cheapcr.  Lhcy will pop up in all sorts
    of easily-wearable accessories . even in the buttons on your coat.  WhaCs morc, this is something that's going to happen a lot sooner than we all expect.
    41. When Rosalind wore the headband, she was surprised a___________
    A. how well the sensor worked           B. how she was affected by traffic
    C. how strong the signal was            D. how uncomfortable it was
    42.  For people eating out , Steven’ s glasses can___________      
    A . give them a restaurant's location
    B.  let them see a restaurant's environment
    C.  inform them about a restaurant’s menu 
    D.  tell them about a restaurant's quality
    43. What is the current problem with Stevcn's glasses?
    A. Limited function.                B. Inconvenience.
    C. High cost.                       D. Poor Internet access.
    44.  In general, what does the writer think about smart accessories?
    A. They will soon be widely available.
    B. Much more research is needed into them.
    C. Only a few of them will appeal to shoppers.
    D. Most of them are considered to be crazy inventions.
    45. What's the writer's purpose in writing this passage?
    A. To advertise some smart accessories.
    B .To tell interesting stories about smart accessories.
    C. To argue that smart accessories are fashionable.
    D. To introduce the idea of smart accessories.

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    Technology has utterly transformed our ability to communicate with each other. Linking to each other both literally and figuratively, many of us connect through cell phones, email, instant messaging, blogs, and networking web sites, yet we may be less connected to each other than we think.
    According to a study, Americans are becoming increasingly socially isolated. The study reveals, for example, that one quarter of Americans say that they have no one to discuss important personal issues with, and that the number of close friends that American have has dropped from three to two. Meanwhile, the Boston Globe reports that this spreading isolation is experienced more sharply among those with less education, people of color, and older Americans. Unsurprisingly, those who are young, white, and well educated tend to have stronger social networks.
    From my own experience I have to say that I’ve never felt more connected, thanks to a web of friends, family, and colleagues. One of my closest friends is someone I met through an online discussion group who lives hundreds of miles away from me. We have met face-to-face only twice, yet our regular electronic correspondence and cell phone calls sustain our close friendship. And, speaking of blogging, my blog has introduced me to people I would never have met otherwise and has led to enduring and important friendships.
    On the other hand, I recently saw a scene unfold that proved to me how deeply disconnected we as Americans have become. I had just wrapped up a presentation on mediation at a family therapy(治疗) center. As I was leaving, I noticed a mother and her teenage son who had just completed their session with their family therapist(临床医学家). After making their next appointment, they both took out their cell phones, placed calls, and began loud conversations with whoever was on the other end. I walked out behind them to the parking lot to my car. They both jumped into their SUV, and, as I saw them drive off, they were still talking on their cell phones.
    But, alas, not to each other.
    51. What does the passage lead you to believe?
    A. Americans are more socially connected today.
    B. Americans are more socially isolated today.
    C. Technology plays a bigger role in American society.
    D. Americans don’t make good use of technology.
    52. Which of the following has nothing to do with the isolation among Americans?
    A. Age.              B. Education.                C. Skin color.               D. Sex.
    53. The author himself _______.
    A. has a wider range of friends because of technology
    B. has failed to take advantage of technology
    C. can only find true friendship through the Internet
    D. can’t make true friends in actual life
    54. What is true about the mother and son in the passage?
    A. They came for therapy in the same car.
    B. They were quite close to each other.
    C. There was not much communication between them.
    D. They preferred talking to each other on cell phones.
    55. The author probably feels ________ with the mother and son.
    A. puzzled         B. disappointed       C. amused                 D. surprised

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    We may all have had the embarrassing moment: Getting half-way through a story only to realize that we’ve told this exact tale before, to the same person. Why do we make such memory mistakes?
    According to research published in Psychological Science, it may have to do with the way our brains process different types of memory.
    Researchers Nigel Gopie, of the Rotman Research Institute in Toronto, and Colin Macleod, of the University of Waterloo, divided memory into two kinds. The first was source memory, or the ability to keep track of where information is coming from. The second was destination memory, or the ability to recall who we have given information to.
    They found that source memory functions better than destination memory, in part because of the direction in which that information is travelling.
    To study the differences between source and destination memory, the researchers did an experiment on 60 university students, according to a New York Times report. The students were asked to associate (联想) 50 random ( 随意的) facts with the faces of 50 famous people. Half of the students "told" each fact to one of the faces, reading it aloud when the celebrity's (名人的) picture appeared on a computer screen. The other half read each fact silently and saw a different celebrity picture afterward.
    When later asked to recall which facts went with which faces, the students who were giving information out (destination memory) scored about 16 percent lower on memory performance compared with the students receiving information (source memory).
    The researchers concluded that out-going information was less associated with its environmental context （背景）---- that is, the person ---- than was incoming information.
    This makes sense given what is known about attention. A person who is giving information, even little facts, will devote some mental resources to thinking about what is being said. Because our attention is limited, we give less attention to the person we are giving information to.
    After a second experiment with another group of 40 students, the researchers concluded that self-focus is another factor that undermines destination memory.
    They asked half the students to continue giving out random information, while the other told things about themselves. This time around, those who were talking about themselves did 15 percent worse than those giving random information.
    "When you start telling these personal facts compared with non-self facts, suddenly destination memory goes down more, suggesting that it is the self-focus component ( 成分) that's reducing the memory, Gopie told Live Science.
    72. The point of this article is to ____.
    A. give advice on how to improve memory
    B. say what causes the memory to worsen
    C. explain why we repeat stories to those we've already told them to
    D. discuss the differences between source and destination memory
    73. What can we learn from the article?
    A. Source memory helps us remember who we have told the information to.
    B. One's limited attention is one of the reasons why those reading aloud to the celebrity's pictures perform worse on the memory test.
    C. Silent reading is a better way to remember information than reading aloud.
    D. It tends to be more difficult for people to link incoming information with its environmental context than outgoing information.
    74. The underlined word "undermines" probably means ____.
    A. weakens         B. benefits        C. explains        D. supports
    75. What did the scientists conclude from the second experiment?
    A. Destination memory is weaker than source memory.
    B. Focusing attention on oneself leads to relatively poor source memory performance.
    C. Associating personal experience with information helps people memorize better.
    D. Self-focus is responsible for giving information twice or more to the same person.

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Against the assumption that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space.
    This finding suggests that taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling.
    This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat.
    Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. Ozone（臭氧）levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling.
    “We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere.” Scientists tracked the change in amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined when fire returns 20 years earlier than predicated, 0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases, but 0.9 watts per square meter will be sent back into space. The net effect is cooling. Watts are used to measure the rate at which energy is gained or lost from the earth.
    小题1:According to the new findings, taking steps to prevent northern forest fires may _______.
    A．result in a warming climate
    B．cause the forest fires to occur more frequently
    C．lead to a longer fire season
    D．protect the forests and the environment there
    小题2:Earlier studies about northern forest fires ________.
    A．analyze all aspects of how northern fires influence climate
    B．indicate that forest fires will pollute the atmosphere
    C．suggest that people should take measures to protect environment
    D．suggest that the fires will speed up climate warming
    小题3:The underlined phrase “soaked up” in the last paragraph most probably means ________.
    A．releasedB．absorbedC．createdD．disturbed
    小题4: From the text we can draw a conclusion that forest fires in Alaska, Canada and Siberia may ______.
    A．warm the climate as the assumption goes
    B．allow more snow to reflect more sunlight into space and thus cool the climate
    C．destroy large areas of forests and pollute the far-off sea ice
    D．help to gain more energy rather than release more energy .

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：完形填空


    第二节：完形填空（共20小题，每小题1.5分，满分30分）
    School children are now constantly asked by their parents and teachers to study harder and harder. And the competition 36    the students themselves is growing in most schools in China. In my opinion, the fierce（激烈的）  37  in school    38  more harm than good.
    　　Visiting a German city, I was   39  to be present at a parent-teacher meeting at a school.   40 were told at the meeting that their children's school grades were held to be a personal information   41  by the law, and that the school would not disclose（透露）the students' marks,  42  would the school report them to the parents. It is their view that a   43  school should encourage children to learn  44 without pressure. A student's intelligence（智力）and ability will be  45  later by competition in society.
    　　In China, ranking students according to their examination has been   46  as a means of encouraging students to study harder.
    　　A friend told me about a parent-teacher meeting she  47  with her daughter who was in the second grade.
    　　At the meeting, a teacher read aloud   48  students in the class and their marks for different   49 . Good students came at the top of the list and poor   50   at the bottom. And in front of everybody at the meeting, the teacher gave warning   51  those poor students and their parents.
    　　From this comparison, I   52  that teachers and school leaders in China ought to learn   53  more about children's psychology（心理学）and show their students more   54  . Such competition among students is unhealthy and should not be  55 .
    36．A．over         B．between           C．among                 D．beyond
    37．A．pain         B．competition      C．study                   D．argument
    38．A．makes      B. gives              C．lets                 D．does
    39．A．forced      B．required       C．ordered                 D．invited
    40．A．Parents     B．Children      C．Teachers                 D．Students
    41．A．forbidden        B．permitted     C．allowed                     D．protected
    42．A．so        B．such              C．nor                   D．or
    43．A．successful B．well-known      C．excellent                 D．ordinary
    44．A．happily     B．lazily               C．inactively               D．friendly
    45．A．judged      B．decided        C．developed         D．trained      
    46．A．stopped    B．used            C．controlled              D．improved
    47．A．went        B．joined            C．attended               D．present
    48．A．a lot         B．a list of            C  the number of           D．the mark of
    49．A．subjects    B．classes             C．schools                D．parents
    50．A．these        B．those            C．one                    D．ones
    51．A．from        B．to                 C．with                       D．off
    52．A．conclude   B．guess             C．want                D．wonder
    53．A．a little             B．a few             C．a bit of                 D．a quantity of
    54．A．marks       B．homework       C．books                D．respect
    55．A．discussed  B．removed          C．lasted              D．encouraged

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    An annularity(日环食) is expected to cross China Friday afternoon, a researcher with the Purple Mountain Observatory under the Chinese Academy of Sciences said Wednesday.
    The phenomenon, predicted to be the longest annularity of the next 1,000 years, can be seen in some areas of Yunnan, Sichuan, Guizhou, Shaanxi, Hunan,  Hubei,  Henan, Anhui, Jiangsu and Shandong provinces as well as Chongqing.
    A partial eclipse(日偏食) would be seen in most of the rest of China, except for the northeast tip of Heilongjiang Province, said Cheng.
    According to the National Aeronautics and Space Administration (NASA) of the United States, the annularity will begin in Africa and pass through the Indian Ocean, where the maximum duration(持续的时间) of annularity will reach 11 minutes and 8 seconds.
    It will continue into Asia through Bangladesh, India, Myanmar and China. Cheng said the annularity will end at Jiaodong peninsula in Shandong Province, China.
    The longest duration of the annularity on China’s territory would be 8 minutes and 17 seconds in Ruili, Yunan Province. A sunset with the annularity would be seen in some areas of Shandong, Guangdong and Taiwan, said Cheng.
    An annularity occurs when the moon does not cover the entire disc of the sun so that a ring of light encircles the shadow of the moon.
    Another expert said that though an annularity was not considered as wonderful as a total solar eclipse and was of little value in scientific research. It was interesting for the general public to watch the phenomenon, though.
    60.The annularity mentioned in the passage is unusual because        .
    A. it is expected to cross all over China
    B. it begins in Africa and passes through Asia
    C. it is of great importance in scientific research
    D. it lasts the longest in the next one thousand years
    61.From the passage we may conclude that people in Fujian can only enjoy the scene of      .
    A. an annularity            B. a partial solar eclipse
    C. a total solar eclipse           D. a sunset with the annularity
    62.People       can enjoy the longest duration of the annularity on Friday.
    A. in Africa    B. in India      C. in China     D. on the Indian Ocean
    63.Which of the following is TRUE according to the text?
    A. The annularity will end in Shandong Province.
    B. The annularity can be seen by people all over China.
    C. The phenomenon is an exciting one to the astronomers only.
    D. A partial eclipse occurs when a ring of light encircles the shadow of the moon.

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    In most situations, light helps us see. But when it comes to looking at the night sky, light is actually a kind of pollution. It prevents our view of some of life’s most striking sights: stars, planets, and even galaxies.
    “When I was a little boy, I loved the night sky. I remember looking up and the sky was filled with stars. I became an astronomer because I was amazed by their beauty,” says Robert gent, “Now in most big cities kids can’t see the stars like I did.”
    Normally, about 2,500 individual stars are visible to the naked eye without using any special equipment. But because of light pollution, you actually see just 200 to 300 and fewer than a dozen from some cities. Only one in three Americans can see our own galaxy (星系) with the naked eye. Those people live far away from the lights of big cities, office building, and shopping malls.
    Fortunately, there’s an inexpensive and useful way. If we shine lights down at the ground instead of up into the sky, and use lower brightness levels, we can save big amounts of energy and keep the beauty of the night skies. Many cities and towns have passed laws limiting lights at night, making sure enough shine for safety without creating much light pollution.
    Light pollution affects more than our view of the heavens and can harm wildlife. Migrating (迁移) birds sometimes fly over cities and become confused by the brightness, flying in circles until they drop from exhaustion. Sea turtles need dark beaches for nesting and won’t approach bright lights. Too much light at night may even affect human health. For all these reasons, researchers are working on ways to use light only when and where they are truly needed. Everyone deserves to look up at the sky.
    小题1:According to the text, using our naked eyes, ______________.
    A．people in remote areas can see more stars than those in big cities
    B．over one third Americans can see our own galaxy
    C．about one in three Americans in big cities can see our own galaxy
    D．Americans can only see 200 to 300 stars
    小题2:Many cities and towns have passed laws limiting lights at night mainly to _________.
    A．save the electricityB．make sure of cities’ safety
    C．let you count the number of starsD．avoid much light pollution
    小题3:In how many ways will the light pollution do harm?
    A．OneB．TwoC．ThreeD．Four
    小题4:The underlined word “exhaustion” in the last paragraph means “_________”.
    A．air pollutionB．tirednessC．breathD．brightness

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    During the school year many parents take on the role of driver as they drive their children from one lesson to another. Many of us want our children to have a little taste of everything, from organized sports to music, dance and more. But we can overdo it, leaving our children feeling a little burnt out, and according to parent educator Diane Loisie, it's their school work that suffers the most. "After school, if they're busy in a number of sporting events, besides they need to do their homework, then the time they'll feel sleepy is in the classroom. Your child needs free time. So if you're filling up that after school time, then it's during the day that they're going to be taking a break. "
    Professor Claire McDermott agrees that there's a lot to be gained from sometimes putting those scheduled lessons and activities away. "Relaxing time is important for children. It's time just to do the things they want to do. A child can go up to their room, or they can play around. It doesn't look like productive time; parents certainly wouldn't be saying ‘Wow, are they ever learning things now?’  But this relaxing time gives both the body and the brain just a wonderful chance to relax after a day. It helps a child prepare for sleep, and it also helps to understand the learning that's gone on that day. "
    It's hard to prevent signing our kids up for some activities and lessons. After all, many of us want our children to have a head start in life and the chance to join in great activities in the arts or sports is a part of that. However, Loisie feels that in the long run most children feel better with just a few key activities because it gives them an opportunity to master them. "When we get our children in too many activities because we want our children to experience everything, then what we're doing is setting them up not to be good at one thing or gaining a skill." So choose your children's activities wisely. It may be one of the best things you've ever done for your kids.
    1. What is the biggest disadvantage for children to attend too many lessons after school?
    A. They can get bored easily about everything.
    B. They might have no time to do the homework.
    C. They might not pay much attention to learning.
    D. They can not easily focus on learning during the day.
    2. What should we think of children's playing around aimlessly?
    A. It is productive.                           
    B. It is helpful.
    C. It is a bad habit.                           
    D. It is a waste of time.
    3. Why should parents limit the activities our children attend?
    A. Because children have no time.
    B. Because children cannot learn many things.
    C. Because children do not have enough sleep.
    D. Because children cannot focus on too many activities.
    4. What is the main idea of this passage?
    A. Don't be children's drivers after school.
    B. Choose activities for your children wisely.
    C. Make your children learn as much as possible.
    D. Let children learn something from various subjects.

    查看答案和解析>>

    同步练习册答案