练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情
    Plastic is one of the most important technological discoveries of the 20th century.However，it may soon be replaced.The new development—liquid wood—can replace plastics in all branches of modern industries.
    Plastic as a material enjoys the biggest demand in the modern world，but it does have a number of drawbacks.First and foremost，plastic isn’t recyclable.Secondly，it contains toxins (毒物) helping develop cancerous diseases.Finally，it’s made of oil and oil reserves aren’t endless.
    The  liquid wood technology is likely to replace plastic and provide mankind with new materials for many years ahead.Norbert Eisenfreich，a senior researcher at  the Faunhofer Institute for Chemical Technology (ICT) in Germany，said that arboform，the new material，is made of lignin (木质素)，which can be obtained from soft tissues of wood.Once mixed with several other materials，it turns into solid and non­toxic alternative for plastics.
    ICT team leader Emilia Regina Inone­Kauffmann said the wood­working industry separates wood into three basic components，including lignin.Lignin isn’t used for the production of paper.Specialists of ICT mixed lignin with several natural materials and thus invented the material which could be melted and molded (铸型)．
    When solid，arboform looks like plastic and possesses the qualities of polished wood.It can be used for the production of any items.Arboform is already used for the production of car parts which require extra strength.In addition，liquid wood can be recycled repeatedly.The material preserved all of its qualities even if it’s reprocessed ten times.
    However，the new invention doesn’t enjoy an extensive use due to the high content of sulphur (硫) in it.German researchers are sure to reduce the amount of sulphur by 90 percent very soon to make arboform usable for home needs.
    小题1:According to the passage，plastic________.
    A．plays a big role in the modern world
    B．helps to protect our environment in some way
    C．has been replaced by the newly discovered material
    D．helps us to reduce the use of petrol
    小题2:What’s the advantage of arboform over plastics?
    A．It is easily made from natural oil.
    B．It is more widely used in household.
    C．It is recyclable and friendly to the environment.
    D．It contains no poisonous materials.
    小题3:It can be concluded that German researchers will focus their future work firstly on________.
    A．the material’s extensive use
    B．the content of sulphur in arboform
    C．the production cost of arboform
    D．the qualities of liquid wood
    小题4:The main purpose of the passage is to________.
    A．advertise the new material—arboform
    B．introduce liquid wood which will replace plastic
    C．advertise new products made of arboform
    D．show readers how to produce arboform

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

    小题1:　A
    解析　细节理解题。由文章第一段第一句和常识可知，塑料是现代社会中不可或缺的原材料。
    小题2:　C
    解析　细节理解题。由文章倒数第二段可知，arboform是可以被重复循环利用的，因而对环境也有利。
    小题3:　B
    解析　推理判断题。由文章最后一段可知，arboform之所以还没有得到广泛应用是因为它的硫含量太高，故德国的研究者会首先把研究重点置于降低硫含量上。
    小题4:　B
    解析　推理判断题。文章通过拿arboform和塑料作比较，一是为了介绍arboform这种新材料，同时也为了说明arboform即将取代塑料这一趋势。
    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

    Against the supposition 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 the 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 had suggested that fires in northern regions sped up climate warming because greenhouse gases from burning trees and plants were released into the atmosphere and thus trapped 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 ashes from the fire fell on far­off 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 said.They tracked the change in the 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 predicted,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 more forest fires
    C．lead to a longer fire season
    D．protect the forests there
    小题2:The following are the immediate effects after a forest fire EXCEPT________.
    A．large amounts of greenhouse gases enter the atmosphere
    B．the levels of ozone which is a type of oxygen increase
    C．snow on the ground mirrors more sunlight back into space
    D．ashes from the fire fall on the ice and darken the surface
    小题3:Earlier studies about northern forest fires________.
    A．had analyzed all aspects of how northern fires influenced climate
    B．had indicated that forest fires would pollute the atmosphere
    C．had suggested that people should take measures to protect environment
    D．had suggested that the fires would speed up climate warming
    小题4:We can infer that forest fires in Alaska，Canada and Siberia may________.
    A．warm the climate as the supposition goes
    B．cool the climate by reflecting more sunlight into atmosphere
    C．make more space for the growth of young trees
    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：阅读理解

    Did you get a flu shot this year？For the first time，the Centers for Disease Control and Prevention in the US is recommending that all children aged from 6 months to 18 years receive the flu vaccine.
    Vaccines battle diseases caused by bacteria and viruses.A weakened form of the germ (病菌) is introduced into the body.The body makes special substances called antibodies (抗体) to fight the germs.If the actual germs were to attack，the antibodies would fight.Because there are many kinds of flu viruses，scientists must create a new vaccine formula (处方) each year.Researchers must make a prediction.
    It is like forecasting the weather.Sometimes they are right on，and sometimes they are off.But even when the vaccine does not closely match circulating flu types，it can make the illness less serious.
    “The flu vaccine is not as effective as the polio (小儿麻痹症) vaccine or the measles vaccine，” says Dr.William Schaffner of Vanderbilt University School of Medicine.“It’s not a great vaccine，but it is in fact quite a good vaccine.”
    But a flu vaccine doesn’t work for everyone.There are certain people who should be careful about taking it，because the vaccine is produced in eggs.Those who are allergic (过敏的) to eggs should not take it.If you have a fever，you should wait until you recover.
    Some people are afraid that they might get the flu from the flu shot.Scientists say that it is not possible，because the viruses in the flu shot are inactivated.But some minor side effects such as low­grade fever and body ache could occur.If they do，they begin soon after the shot and usually last only one to two days.
    Did you know？Smallpox was the first disease people tried to prevent by putting a virus into a healthy person.In 1796，English scientist Edward Jenner placed some infected material under a boy’s skin.
    小题1:The underlined word “vaccine” (in Para.1) refers to________.
    A．virus used for fighting against disease
    B．antibody to fight the germs
    C．formula to fight against disease
    D．germ to be injected into the body
    小题2:By saying “It’s not a great vaccine，but it is in fact quite a good vaccine.” (in Para.4)，William Schaffner means the flu vaccine________.
    A．is as effective as the polio and the measles vaccines
    B．is worse，compared with the polio and the measles vaccines
    C．does help to make illness less serious
    D．is quite good because it works for everyone
    小题3:We can infer from the passage that________.
    A．those who are not allergic to eggs can take the flu vaccine
    B．not all the flu vaccines are effective for everyone
    C．you should go to a doctor if you have a fever after taking the flu vaccine
    D．it is possible that some people might get the flu from the flu shot
    小题4:When people take the flu vaccine，________.
    A．they’ll be allergic to eggs
    B．their bodies will ache for 5 days
    C．they probably have a low fever
    D．they won’t catch a flu ever after

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Founded in 1966，Seacamp，the first program dedicated to the education of youth in marine(海洋的) sciences，is the result of a cooperative effort of parents，scientists，businessmen and camp leaders.Preservation practices and a respect for the marine environment are the philosophy of the Seacamp.
    Seacamp’s tropical marine location in the lower Florida Keys enables it to offer a truly unique marine science program.This program is the heart of Seacamp.Young scientists participate in a variety of courses under the guidance of academically trained marine science instructors and biologists.All science activities include studies in both the field and the laboratory.Each session,140 to 160 campers come to Seacamp，mostly from the US，but also from across the world.There are about 30 international campers each summer from an average of twelve countries.Many Seacamp program graduates have gone on to careers as environmental educators and marine scientists.
    One of Seacamp’s unique aspects is that campers create their schedules.In addition to science classes，campers choose from a variety of programs to ensure that there is something interesting and exciting for everyone.Campers interested in journalism may work on the camp newspaper，SEASCOPE，which is published periodically during camp sessions.Arts activities are also included.Photography allows campers to take home memories of friends，wildlife，and underwater experiences.
    Seacamp teaches the fun and skills of sailing.It’s an excellent way for future marine scientists to become familiar with the winds，tides and currents that are of primary concern in oceanography.Basic Red Cross certification is offered to beginners in sailing.The Red Cross course in advanced lifesaving is taught at Seacamp.The course is designed to increase the campers’ ability to recognize and avoid dangerous water conditions and practices and to use self­rescue skills to get out of dangerous situations.
    Parents may bring campers by car to Big Pine Key.Counselors(辅导员) also meet participants at the Miami International Airport on the opening day of camp and accompany them to Big Pine Key on a bus.The fee for round­trip service is $90.To join the Seacamp adventure，interested campers should contact Seacamp for an application.
    We love to talk about camp！For more information or to ask any questions you might have，please give our friendly staff a call and we’ll be glad to help!
    小题1:According to the text，Seacamp is designed to help campers ________.
    A．have a good time at the seaside
    B．develop a sense of marine protection
    C．make a further study about sea life
    D．complete a course about marine wildlife
    小题2:It can be learned from Paragraph 3 and 4 that ________.
    A．Seacamp offers many programs apart from science classes
    B．Seacamp is responsible for training marine scientists
    C．beginners in sailing should learn the advanced Red Cross course
    D．Seacamp provides traditional camp activities such as arts and crafts
    小题3:The main purpose of the text is to ________.
    A．attract the young to Seacamp
    B．present Seacampers’ experiences
    C．introduce the programs of Seacamp
    D．explain the aim of Seacamp

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Where do you find out about the world’s longest walk? The world's tallest man? The world's oldest woman? You know the answer, of course. It is the Guinness Book of World Records. How would people find such unusual facts without this book?
    Guinness Book did not exist until 1951. Here is what happened. The managing director of Guinness Brewery was a curious man. He wanted answers to some questions about records. For example, he wanted to know what was the fastest flying game bird in Europe. But he was frustrated. There was no book to answer questions like this.
    The director, Sir Hugh Beaver, contacted the McWhirter twins. They were brothers who owned a research agency. He asked them to put together a new reference book. It would include all kinds of unusual records. The brothers quickly accepted. The first edition of their book was published in 1955. Soon the Guinness Book of World Records was a best seller. It has sold more copies than any book except the Bible. A new edition is published every year.
    Where do all the book's records come from? They are a combination of things like natural wonders, sports records, and stunts(特技) (How many people would push an egg with their noses if they weren’t trying to get to the book?). But the editors try to keep things honest. All records must be verified by an investigator. Only then are they printed.
    The Guinness Book is a big business. It is published in dozens of languages. There are TV shows and museums. It is proof of how interested people are in strange pieces of information.
    小题1:The passage is mostly about _____.
    A．the McWhirter twins
    B．the director Sir Hugh Beaver
    C．unusual records in the Guinness Book
    D．a history of the Guinness Book
    小题2:The Guinness Book _____.
    A．is a best seller
    B．is published only in English
    C．does not always check its records
    D．has a full-length movie based on it
    小题3:It is clear from the passage that the McWhirter twins _____.
    A．wanted to publish the book so that they set up a research agency
    B．owned so good a research agency that they liked to help others
    C．recognizes that Sir Hugh's idea for a book was a good one
    D．wanted to know the answers to some questions about records
    小题4:In this passage, the underlined word "verified" means _____.
    A．questionedB．proved the truthC．written upD．blocked

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Global warming happens when greenhouse gases trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This is like when heat is trapped in a car. On a hot day, the car gets hotter when it is out in the parking lot. This is because the heat and light from the sun can get into the car, by going through the windows，but it can’t get back out. This is what the greenhouse effect does to the earth .The heat and light can get through the atmosphere, but it can’t get out As a result，the temperature rises.
    Sometimes the temperature can change in a way that helps us. The greenhouse effect makes the earth appropriate for people to live on Without it，the earth would be freezing，or it would be burning hot. It would be freezing at night because we would not get the sun’s heat and light .During the day, especially during the summer, it would be burning because the sun would be up with no atmosphere to filter(过滤)it，so people，plants，and animals would be exposed to all the light and heat.
    Although the greenhouse effect makes the earth able to have people living on it，if there gets to be too many gases，the each can get unusually warmer, and many plants，animals．and people will die. Plants would die because they would not be able to take the heat .This would cause us to have less food to eat, and it would also limit the food that animals have. With less food for the animals that we need to survive we would even have less food. Gradually, people，plants，and animals would all die of hunger．
    People are doing many things to try to stop global warming .One thing is carpooling—driving with someone to a place that you are both going to. Another thing is being more careful about leaving electrical devices turned on. Now, more people are even riding buses or bikes to lower the amount of greenhouse gases in the air .Although adults do many things to help stop global warming, kids call do just as much.
    小题1:By the example given in Paragraph l, the author wants to__________.
    A．explain how global warming happens
    B．show his feeling in a car in hot summer
    C．tell us cars are causes of greenhouse gases
    D．say that I there are greenhouse gases in every car
    小题2:The underlined word ‘it” in Paragraph 2 refers to__________.
    A．lightB．greenhouse effectC．temperatureD．heat
    小题3:What is the effect of atmosphere?
    A．IT only traps the heat of the sun.
    B．It does great harm to humans.
    C．It makes the earth neither to hot nor too cold.
    D．It prevents all the light from the sun shining on the earth.
    小题4:What is the main idea of the third paragraph?
    A．lf there is greenhouse effect．all the plants will die
    B．Human beings are likely to disappear from the earth
    C．Crops can ′t take in the heat lf there is greenhouse effect
    D．Although greenhouse effect is necessary．Too much of it will cause us to die.
    小题5:What will the author most probably discuss in the paragraph that follows?
    A．What kids can do to help stop global warming.
    B．Who should be responsible for the environmental problems.
    C．What global warming is doing to the environment.
    D．Why cars and buses pollute the air a lot

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    According to body language expert Robert Phipps，the way people sleep at night actually determines a lot about the type of personality they have.Phipps has identified four sleeping positions that affect personality.
    Phipps found that worriers，those who stress the most，tend to sleep in the fetal(胎儿的)position.He found that this is the most common bedtime position，with nearly 58 percent of people sleeping on their side with knees up and head down.The more we curl up(蜷曲)，the more comfort we are seeking，according to Phipps.
    The second most common position is the log.Sleeping with a straight body，with arms at each side，as if they are standing guard at Buckingham Palace，indicates stubbornness，and these people(the 28 percent who sleep this way)often wake up stiffer than when they went to sleep.
    “The longer you sleep like this，the more rigid your thinking is and you can become inflexible，which means you make things harder for yourself，”according to Phipps.
    Yearner(向往型)sleepers are next on the list.About 25 percent of people sleep in this style—on their side with arms stretched out in front，looking as if they are either chasing a dream or perhaps being chased themselves.Yearners are typically their own worst critics，always expecting the best results，explained Phipps.These people often wake up refreshed and eager to face the challenges of the day ahead.
    Perhaps the most peculiar(奇怪的)of sleep styles is the freefaller position.This sleep style makes up 17 percent of the population.They sleep face down with arms stretched out.These people，according to Phipps，feel like they have little control over their life.Not only is this the strangest of sleep styles，but also the least comfortable，and people may wake up feeling tired and have no energy.
    In conclusion，Phipps has only one more thing to add：“A good night's sleep sets you up for the following day and our sleeping positions can determine how we feel when we wake.”
    小题1:Which of the following is the best title of the passage?
    A．A Good Night's Sleep Sets You Up for the Following Day
    B．Your Personality Depends a Lot on How You Sleep at Night
    C．How You Sleep at Night Affects What You Do the Next Day
    D．Which Sleeping Position Helps You Sleep Comfortably
    小题2:Which of the following pictures is the fetal position?

    小题3:The underlined word“rigid”is closest in meaning to “________”．
    A．stubbornB．flexible
    C．comfortableD．strange
    小题4:Which of the following shows the structure of the passage?
    CP：Central 　P：Point　Sp：Sub?point
    C：Conclusion

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Anyone who doubts if children are born with a healthy amount of ambition need spend only a few minutes with a baby eagerly learning to walk. No matter how many times the little ones stumble in their first efforts, most keep on trying, determined to master their amazing new skill. It is only several years later, many psychologists and teachers agree, that a good number of kids seem to lose their natural drive to succeed. For the parents of such kids, whose own ambition is often tied to their children's success, it can be a painful experience.
    Figuring out why the fire went out is the first step. Assuming that a kid doesn't suffer from a learning disability, or isn't involved in some family crisis(危机) at home, many educators attribute a sudden lack of motivation to a fear of failure or classmate pressure.“Everything is within the kids' control；their intelligence is changeable,”says Lisa Blackwell, a research scientist at Columbia University. More than any teacher or workshop, Blackwell says,“Parents can play a key role in conveying this message to their children by praising their effort and progress rather than emphasizing their “smartness” or praising high performance alone. Most of all, parents should let their kids know that mistakes are a part of learning.”
    Some experts say our education system, with its strong emphasis on testing and separation of students into different levels of ability, also bears blame for the disappearance of drive in some kids.“These programs shut down the motivation of all kids who aren't considered gifted and talented. They destroy their confidence,” says Jeff Howard, a social psychologist. Howard and other educators say it's important to expose kids to a world beyond homework and tests, through volunteer work, sports, hobbies and other extra­curricular activities.
    “The problem of the issue is that many students experience education as irrelevant to their life goals and ambition,”says Michael Nakkual, a Harvard education professor. The key to getting kids to aim higher at school is to free them of the idea that class work is irrelevant, and to show them how doing well at school can actually help them fulfill their dreams beyond it. They need to understand that you have to learn to walk before you can run.
    小题1:According to the passage, the parents of kids with no ambition ________.
    A．don't do a very good job on teaching them to walk
    B．are to blame if the kids do poorly in school
    C．feel pain because their own ambition is connected to their kids' success
    D．should take part in extra­curricular activities with kids
    小题2: The underlined part “the fire went out” probably means ________.
    A．the motivation was suddenly lost
    B．the fear of failure was suddenly gone
    C．the learning disability was suddenly lost
    D．the fire was suddenly gone
    小题3:All the following can contribute to a sudden lack of ambition EXCEPT ________.
    A．learning disabilityB．classmate pressure
    C．emphasis on testingD．extra­curricular activities
    小题4:What is the most important thing for parents in motivating their kids?
    A．Punishing kids who don't display ambition.
    B．Emphasizing smartness and high performance.
    C．Telling kids that mistakes are a part of learning.
    D．Praising the effort and progress they have made.

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    What would it be like to take a walk on the surface of Mars? If you could design the tallest building in the world, what would it look like? Do you dream of being the next J．K. Rowling? This summer, you can experience all of these things, and more. All you need is an Internet connection and your imagination.
    A recent study by the Kaiser Family Foundation found that kids spend an average of 1 hour and 29 minutes online each day. Many kids like to use that time to chat with friends, play games or check e­mails. But the next time you get on the Web, try exploring the world instead. “With the Internet, you can go back 11,000 years in time, or go 11,000 kilometers across the planet.” said Russell, Web search expert of Google. “The whole scope of history and the world is open to you.”
    There is a wealth of information to be found online. For example, if your family is going on vacation somewhere，do a quick online search on the area before you even get in the car. “What's the background of the place; what's the history？” says Russell. “I like to tell my kids, ‘Whenever you have a question, whenever you have a doubt, search it out.’”
    Ready to launch a virtual journey of your own? Here are a few starting points to get you thinking and to help you on your way. You can invite your parents along for the ride, too. Always ask for permission before downloading programs and software onto your computer. And check with a parent or an adult before visiting a new Web site.
    Navigate the world in 3­D with Google Earth. Begin in outer space and zoom(快速移动) into the streets of any city, from Hong Kong to San Francisco. Or visit ancient monuments, watch the changing rainforests over time, and dive underwater to explore tropical reef.
    With the Moon in Google Earth tool, you can walk in Neil Armstrong's famous footsteps. Take a guided tour of the moon's surface with Armstrong's fellow shuttle mate astronaut Buzz Aldrin.
    When you're exploring that part of the solar system, hop on over to the Red Planet with Google Mars. There, you can move very quickly around the surface and see images from the Mars Rovers.
    小题1:The author uses questions in the first passage to ________.
    A．introduce the topic of the paragraph
    B．question the possibility of realizing the dream
    C．attract the readers' attention
    D．let the readers answer it
    小题2:How do you travel around the world in a day according to the passage?
    A．By taking the time shuttle.
    B．By making use of the Internet
    C．By watching 3­D films.
    D．By finding a tourism company in Google
    小题3:Russell thought ________.
    A．the students spent too much time on the Internet
    B．the students shouldn't chat and play games online
    C．the students could solve their problems through the line
    D．the students should learn knowledge instead of chatting online
    小题4:What's the purpose of the passage?
    A．Encourage the kids to spend more time online.
    B．Encourage the kids to do some research on science.
    C．Encourage the kids to learn to use the computer.
    D．Encourage the kids to explore the world online.

    查看答案和解析>>

    同步练习册答案