男女男精品视频网站,欧美a v在线播放,性高潮免费视频

精英家教網 > 高中英語 > 題目詳情

Farmers can produce more by planting several different crops in the same field.But their success depends on which crops they plant together and how they mix (混合) them in the filed.In the past, the only way the farmers could learn which crops grow best together is to plant them and wait for the results.Now, however, a computer can give them answers.A new computer program written by Dr John Vanderwell of Michigan University can tell a farmer which plants grow well together and which do not.It can tell him how to plant the different crops; if he should plant each in a separate row, or mix the crops in the same row.It can tell the farmer how changes in planting each of the crops will affect the production of all of them.And it can tell him which plants can help reduce losses (損失) from diseases.
小題1:Which of the following best gives the main idea of the passage?

A．Computer helps find the best program for mixing plants.

B．Computer helps produce more crops.

C．Computer helps protect against insects and diseases.

D．Computer helps grow different plants.

小題2:According to the passage, to get the best result, one needs to choose carefully ________.

A．the kinds of crops to be planted together

B．the way for different crops to be mixed

C．both A and B

D．either A or B

小題3:It seems the new computer program can NOT tell us ________.

A．whether we should grow cotton and tomato together

B．how we should plant cotton and tomato together

C．what will happen if we grow potato, instead of tomato, together with cotton

D．how we can grow rice in the tomato field

小題4:The new computer program seems most useful in saving us ________.

A．man power

B．seeds

C．time

D．land

小題5:Which of the following is NOT true?

A．Computers can tell farmers how many plants can grow together.

B．With the help of computers farmers don't have to do a lot of work.

C．With the help of computers farmers can get better results.

D．The change of one plant may cause a change in production.

小題1:B
小題2:C
小題3:D
小題4:D
小題5:B

試題分析：文章介紹了一種新的電腦程序，可以告訴農民怎樣在同一塊土地上種更多的莊稼，可以節省土地。
小題1:主旨題：從文章的句子：A new computer program written by Dr John Vanderwell of Michigan University can tell a farmer which plants grow well together and which do not.可知這篇文章介紹一種電腦程序，可以知道什么莊稼在一起種最好。選B
小題2:細節題：從文章的句子：But their success depends on which crops they plant together and how they mix (混合) them in the filed.可知成功與否取決于什么莊稼在一起長比較好，怎么長。選C
小題3:細節題：從文章的句子：which plants grow well together and which do not.可知A正確，how to plant the different crops; 可知B正確，從It can tell the farmer how changes in planting each of the crops will affect the production of all of them.可知C是對的，沒有提到可以在西紅柿田里種水稻。選D
小題4:細節題：從第一句話：Farmers can produce more by planting several different crops in the same field.可知這種方法可以在同一塊土地上種更多的莊稼，就是節省土地。選D
小題5:排除題：新的方法只是讓人們在同一塊土地上種更多的莊稼，就是節省土地。但不能節省勞力。選B
點評：本文要求考生讀懂文章中的每個句子的意思還要推理它們之間的關系，結合自己的生活常識和經驗，再通過邏輯推理和判斷，理解文章的言外之意，從而揭示文章的深層涵義。任何一篇文章都有其特定的寫作目的，讀者應當知道如何去做或按照某種方式傳遞思考問題。推理判斷題的答案不可能在文章中直接找到，因此推理時我們務必要忠于原文，在文章中尋找并確定可推論的依據。

練習冊系列答案

特級教師小學畢業升學系統總復習系列答案

提分計劃單元期末系列答案

年級	高中課程	年級	初中課程
高一	高一免費課程推薦！	初一	初一免費課程推薦！
高二	高二免費課程推薦！	初二	初二免費課程推薦！
高三	高三免費課程推薦！	初三	初三免費課程推薦！
更多初中、高中輔導課程推薦,點擊進入>>

相關習題

科目：高中英語 來源：不詳 題型：閱讀理解

In the past, man did not have to think about protection of the environment. There were very few people on the earth, and natural resources seemed to be unlimited.
Today things are different. The world has become too crowded. We are using up our natural resources too quickly, and at the same time we are polluting our environment with dangerous chemicals. If we continue to do this, human life on the earth will not survive.
Everyone realizes today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing methods, more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on land. Yet, we continue to use more powerful machines to cut down more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. However, in most countries waste is still put into rivers, but there are few laws to stop this.
We also know that if the population of the countries in the world is to rise at the present rate in a few years, there will not be enough food.
What can we do to solve these problems?
If we eat more vegetables and less meat, there will be more food available for everyone. Land that is used to grow crops can feed five times more people than land where animals are kept.
Our natural resources will last longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth control.
Finally, if all of us think about the problem, we will have a better and cleaner planet in the future.
小題1:This passage mainly tells us about ______.

A．the problems we are facing today about environment and the ways to solve them

B．the unlimited natural resources in the world

C．our rivers are being polluted by waste from factories

D．the ways early man protected the environment

小題2: Which of the following is NOT true?

A．If we eat more vegetables, more food can be saved.

B．In the past, there was no need for people to think about environmental protection.

C．If we keep on cutting trees, forests will disappear.

D．We shouldn’t take more and more fish out of the sea, or there will soon be no fish left.

小題3:What is implied (暗示) in the passage?

A．Man is cleverer than any other animal.

B．Man will destroy himself if he doesn’t solve the problem.

C．Modern fishing methods are helpful in our fishing industry.

D．We should make more laws in order to survive.

小題4:From the passage we can see that the world’s natural resources ______.

A．will never be used up	B．are being polluted
C．are as plentiful as in the past	D．are being used up very quickly

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

CORVALIJS. Ore.-- Engineers at Oregon Suite University have made a breakthrough in the performance of microbial (微生物的)fuel cells that can produce electricity directly from wastewater，opening the door to a future in which waste treatment plants not only will power themselves, but will sell extra electricity.
The new technology ,developed at OSU, can now produce 10 to 50 more times the electricity, per volume, than most oilier approaches using microbial fuel cells,and 100 times more electricity than some.
Researchers say this could eventually change the way that wastewater is treated all over the world, replacing the widely used “activated sludge (泥漿) ” process that has been in use for almost a century. The new approach would produce significant amounts of electricity while effectively cleaning the wastewater,
“If this technology works on a commercial scale the way we believe it will ,the treatment of wastewater could be a huge energy producer, not a huge energy cost.” said Hong Liu ，an associate professor in the OSU Department of Biological and Ecological Engineering. “This could have an impact around the world, save a great deal of money, provide better water treatment and promote energy sustainability.”
The biodegradable (能降解的）characteristics of wastewater, if developed to their full potential, could theoretically provide many times the energy that is now being used to process them, with no additional greenhouse emissions.
OSU researchers reported several years ago on the promise of this technology, but at that time the systems in use produced far less electrical power. With new concepts, the technology can now produce more than two kilowatts per cubic meter of liquid reactor volume.
The new system also works better than an alternative approach to creating electricity from wastewater, based on anacrobic (臭氧的）digestion that produces methane (甲烷）.It treats the wastewater more effectively, and doesn’t have any of the environmental drawbacks of that technology, such as production of possible release of methane, a significant greenhouse gas.
小題1:Which of the following best expresses the main idea of the passage?

A．The treatment of wastewater is a huge energy cost.

B．Wastewater is being treated differently over the world.

C．Waste treatment plants have found a new way to power themselves.

D．Microbial fuel cells will produce more electricity from wastewater.

小題2:What can we learn about the new technology from the passage?

A．It can produce 100 times more electricity than any approach used today.

B．Through it more electricity can be created and water can be cleaned better.

C．It has already changed the way that wastewater is treated all over the world

D．It has opened the door to put microbial fuel cells to productive use.

小題3:What attitude does Professor Liu hold towards the new technology?
A. Supportive. B. Critical. C Unconcerned. D. Curious.
小題4:According to the last paragraph, why does the new system work better than the alternative approach?

A．Because it is co-friendly and treats wastewater more effectively.

B．Because it can make full use of anaerobic digestion producing methane.

C．Because it may produce less methane than the alternative approach.

D．Because it can produce 10 times the energy than the alternative approach.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

If you find that your teacher is unfair to you, think about what is happening. Try to find out whether your teacher really dislikes you, or whether something else is going on. Here are some questions to ask yourself:
小題1: Ask your classmates if they are having trouble with the teacher, too. If they say yes, perhaps your teacher is to blame.
Are you working up to your ability? Maybe you got a C in your last test, and your teacher told you that you could do better. And the kid sitting beside you got a C, too.小題2: Isn’t this unfair? Well, it could be that your teacher knows that you could do better if you put more effort into it. 小題3:
小題4: There’s nothing wrong with being sensitive (敏感的) ，but if you react to criticism quite differently from others, this could be a reason why you think your teacher doesn’t like you.
Does your teacher seem to act unfairly all the time, or just once in a while? Think about the harsh (苛刻的) things your teacher has done to you. Are these things happening every day, or just once or twice a month? If your teacher really hates you, you would probably be picked on all the time.小題5:

A．Are you the only person being treated badly, or is your teacher rough on the whole class?

B．Are you getting along well with your classmates?

C． Are you more sensitive than other students?

D． Are you interested in your lessons?

E . If your teacher has acted unfairly only a few times, then there’s probably something else going on.
F．Teachers often grade students by different standards.
G．But the teacher didn’t say anything to him！

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Family Vs Technology
Modern technology certainly changes family behavior, but does it really damage family life as many people fear? Not necessarily, says Dr. Silva, a professor in Sociology(社會學) at the Open University, she also argues it is wrong to assume technology erodes(腐蝕，侵蝕) the quality of family life.
“There is the idea that technology has an influence on the family and the family suffers. My take is quite different,” she explains. “Technological change happens because people’s lives change. And it is people’s choices of how to live that creates processes of innovation(革新) as well. The family has a role like the economy or like technology itself in changing the world. The imagination is important in driving the things technologists want to find for our daily lives. People desire to see nature as it is, so color television comes about,” she says.
In another case, the increase in working mothers helped create a market for labor-saving kitchen equipment. “The time that women have to shop every day for food is no longer available so there is a need to have a refrigerator for food storage,” says Dr. Silva. “The need to cook that food more easily and quickly, means you have developments in cooking technology like the microwave oven(微波爐). The microwave oven already existed because it was developed for the navy during World War Two but it wasn’t used in ordinary families until the early 1980s.
“Technologies for housework were as important as those for work itself,” she says, “So washing machines, refrigerators and microwave ovens are terribly important. We couldn’t imagine what life would be like if we didn’t have them.” Technological changes in the kitchen have played an important role in the changes of family behavior, creating a new social focus in the home.
“With advanced technology, you can feed the family in an easier manner. People can do housework with less difficulty. But that doesn’t mean that family practices are not important — it’s just a different way of doing things.”
小題1:What is Dr. Silva’s attitude towards the effect that technology has on family life?

A．Worried.	B．Optimistic(樂觀的).
C．Puzzled.	D．Uncertain.

小題2:What causes advances in technology according to Dr. Silva?

A．People’s love for nature.

B．Great changes in people’s way of life.

C．People’s desire to change the world.

D．The wonderful imagination in inventing things.

小題3:What can we learn from the passage?

A．The microwave oven was first used by working mothers.

B．People cook less because of modern kitchen equipment.

C．Technology has little effect on the changes of family behavior.

D．People need less skill to do housework due to advanced technology.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Even if we have an extremely healthy diet and lifestyle, the human body is programmed to wear out at a maximum of about 120 years, and usually less. We all have a biological clock inside us which determines the moment when our organs cease to function properly. This is because our cells have stopped renewing themselves and our body can no longer repair itself. This is also the moment when we are more likely to begin to suffer from the diseases of old age such as arthritis and Alzheimer’s. However, rapid advances in DNA research are beginning to throw light on the secrets of the ageing process. By the end of this century we could literally have the power of life over death.
Although it has long been accepted that humans have a fixed lifespan, it is also a fact that certain other organisms, such as reptiles and amphibians, appear to live indefinitely. The only reason we do not see 500-year-old alligators is because in the wild their lives are always in danger, from man, from pollution and from other animals. When they are kept in zoos they do not seem to age at all after they are fully grown. The same is true of some species of fish, which grow indefinitely and show no signs of ageing. The existence of animals with no fixed lifespan seems to indicate that an age gene really does exist. It is this gene which scientists are searching for, which may delay or repair damage to the body caused by ageing.
Another new area of research involves the oxidation（氧化） theory, which says that ageing is caused by the same process that makes iron rust. In controlled experiments, the lifespans of certain animals were shown to be lengthened with anti-oxidants; for example, the lifespan of mice can be increased by 30%. Antioxidants are already being used in face creams and other cosmetics, and they are likely to play an important part in keeping people physically young.
Perhaps the most immediate advance we are likely to see in the battle to halt（停止）the ageing process will be organ replacement. By the year 2020 it is likely that we will be replacing injured bones or even organs like livers and kidneys with ones “grown” in laboratories. By 2050 perhaps every organ in the body, except the brain, will have become commercially available. Recent experiments also show that it may one day be possible to “grow” new organs inside our body to replace worn-out ones, something which lizards and alligators already do.
Suddenly immortality（不死，不朽） seems within reach. We can begin to imagine a future where we are born, we grow to maturity, but we never grow old and die. But do we really want to live forever?
小題1: When all humans reach a certain age, .

A．they suffer the effects of their diet and lifestyle

B．the organs stop to perform appropriately

C．their cells continue to renew themselves

D．they develop arthritis and Alzheimer’s

小題2: The purpose of showing the case of alligators is to prove .

A．alligators are in danger in the wild because of the threat from man, pollution and other animals

B．it is widely accepted that humans have a fixed lifespan

C．there exists an age gene which may control ageing

D．the age gene damages the body

小題3:The underlined phrase “live indefinitely” in Paragraph 2 probably mean .

A．live for a period of time without a fixed end

B．live without a clear aim

C．live in an uncertain way

D．live without being fully grown

小題4:It can be inferred from Paragraph 4 that .

A．by 2050 we might have most of our worn-out organs replaced with new ones commercially

B．never can the ageing process be avoided

C．livers and kidneys are sure to be grown in laboratories by the year 2020

D．lizards and alligators grow new organs inside their body to replace worn-out ones

小題5: What is the main topic of this passage?

A．DNA researches show how our cells renew themselves.

B．Anti-oxidants are likely to play an important part in keeping people young.

C．How our biological clock works?

D．Eternal（永恒的） youth: new developments in anti-ageing research.

小題6:By saying “But do we really want to live forever”, the author may probably mean .

A．a future where we are born, we grow to maturity, but we never grow old and die is on its way

B．he is uncertain whether we can live forever

C．it remains to be seen whether immortality is a blessing or a curse

D．immortality is no longer a dream

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Eco City Farms are becoming more popular in cities and towns around the Unites States.
Eco City Farms in Edmonton, Maryland, is located near shopping centers, car repair shops and homes. The neighborhood is a working-class community. People do not have very much money. And they have limited access to fresh food in markets.
Over the past two years, the farm has attracted volunteers form the community like Marcy Clark. She schools her four children at home. On a recent day she brought them to Eco City Farms for a lesson, her son Alston Clark thinks his experience is very valuable. “I like coming out here,” he says, “You know, you connect with the earth, where your food comes from. You appreciate the food a little bit more.”
Margaret Morgan started Eco City Farms. She thinks of it as a place where people can learn to live healthier lives. “Growing food in a community brings people together, ”she continues, “Every piece of what we do here is a demonstration (范例) to show people everything about how to have an eco-friendly community.” she says. From the Eco City Farms people come to know that they are not only growing food and raising chickens and bees, but improving the soil with compost (肥料) made from food waste.
Eco City Farms is an experimental operation. The farm gets its power not from the local electricity networks, but from the sun with solar panels (板). In winter, the green house use a geothermal (地熱) system.
Vegetables can be grown all year. So once a week, all winter long, neighbors like Chris Moss and her three children bike to the farm to pick up a share of the harvest.
“I like eating the vegetables” say five-year-old Owen Moss.
小題1:What is mainly talked about in the passage?

A．Eco City Farms save a lot of energy.

B．Eco City Farms are influencing community life.

C．Eco City Farms helps the working-class live better.

D．Eco City Farms are gaining popularity.

小題2:What is the author’s attitude toward Eco City Farms?

A．Enthusiastic.	B．Disappointed.
C．Surprised.	D．Doubtful.

小題3:According to the passage, Eco City Farms are close to the following places EXCEPT______.

A．shopping centers

B．car repair shops

C．fast-food restaurants

D．working-class community

小題4:In which of a newspaper can you most probably read this article?

A．People.	B．Travel.
C．Environment.	D．Education.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Scientists have proved that sleeping and learning go hand in hand. Even a short nap can boost our memory and sharpen our thinking. But the relationship goes deeper than that.
“The brain is not passive while you sleep,” scientist Anat Arzi said. “It’s quite active. You can do many things while you are asleep.”
Arzi and her coworkers didn’t try to teach the sleeping volunteers any complex information, like new words or facts. Instead, the scientists taught volunteers to make new connections between smells and sounds.
When we smell something good, like a flower, we take deep breaths. When we smell something bad, we take short breaths. Arzi and her co-workers based their experiment on these reactions.
Once the volunteers fell asleep in the lab, the scientists went to work. They gave them a whiff of something pleasant and meanwhile played a particular musical note. They didn’t wake up, but they heard—and sniffed(吸氣) deeply. Then the scientists gave the volunteers a whiff of something terrible and played a different musical note. Again, the volunteers heard and smelled—a short snort this
time—but didn’t wake up. The researchers repeated the experiment.
After just four repetitions, volunteers made a connection between the musical notes and their paired smells. When the scientists played the musical tone that went with good smells, the sleepers breathed deeply. And when the scientists played the musical tone that went with bad smells, the sleepers breathed briefly—despite there being no bad smell.
The next day, the volunteers woke up with the sound-smell connection. They breathed deeply when hearing one tone and cut their breaths short when hearing the other, which must have been unusual for them. Imagine walking down the street and taking a deep breath upon hearing a particular sound!
小題1:In the study, the volunteers were taught _______.

A．to become active during sleep

B．to tell the difference between smell

C．to learn new words and scientific facts

D．to make sound-smell connections

小題2: How did the volunteers react when smelling something nice and hearing musical notes?

A．They took a deep breath.	B．They had a wonderful dream.
C．They woke up at once.	D．They took a short breath.

小題3: When the volunteers woke up the next day, they_______.

A．learned how to play to musical tones

B．forgot what happened during their sleep

C．continued with the sound-smell connection

D．changed their reaction when hearing.

小題4:The passage mainly tell us______

A．special smells and sounds can improve our memory.

B．our brain can actually learn something new during the sleep.

C．the volunteers will always hear similar sounds in the street.

D．our brain can tell the difference between smells during the sleep.

小題5:Which of the following is NOT true?

A．A short sleep can improve our memory and sharpen our thinking.

B．Arzi and her coworkers didn’t try to teach the sleeping volunteer some simple information.

C．When the volunteer smelt something terrible, they didn’t wake up.

D．After four repetitions, volunteers made a connection between the musical notes and their pared smells.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

US universities are among the best in the world. Since World War Ⅱ, American scientists --- mostly working in universties or colleges --- have won more than half of all Nobel Prizes in physics and medicine. Foreign students rush to the United States by the tens of thousands. Last year they earned more than one quarter of the doctoral degrees awarded in the country. Yet while American universities produce the great research and great graduate program, they sometimes pay little attention to the task that lies at their very core: the teaching of undergraduate students.
With the increase in fees, educators feel obliged to improve undergraduate teaching. In speeches and interviews the nation’s higher educators have rediscovered teaching. Robert Rosenzweig, president of the Association of American Universities, said, “Our organization was never very concerned about teaching. In the last 18 months, we have spent more time on undergraduate education than on any other subject.”
Despite such promising efforts, no one doubts that research still outranks teaching at some of the leading universities, not least because it is a surer and faster way to earn status. Some people don’t think it has to be that way. They argue that the reward system for college faculty can be changed, so that professors will be encouraged to devote more time and effort to teaching. They say that they are beginning to believe that the first ten years of the 21st century may come to be remembered as the decade of the undergraduate.
That would bring it full circle. For more than two centuries after the founding of Harvard College in 1636, the instruction of undergraduate students was an essential condition of American higher education.
小題1:According to the passage, at some of the leading American universities ________.

A．research is declining in importance	B．teaching now ranks above research
C．teaching is a sure way to gain position	D．research still ranks above teaching

小題2:It is implied in the passage that about 200 years ago undergraduate instruction ________.

A．began to change all of a sudden

B．was already threatened by research work

C．was the central part of higher education

D．began to be neglected in most universities

小題3:What would be the best title for the passage?

A．University education in the US	B．University education challenged
C．Teaching and research in universities	D．Undergraduate teaching rediscovered

查看答案和解析>>

同步練習冊答案

影音先锋制服丝袜_欧美 国产 日本_亚洲欧美综合自拍_亚洲最大成人在线观看_成人一区二区三_色呦呦网站入口_亚洲欧美高清在线_黄页网站在线看_一卡二卡在线观看_在线观看免费黄网站

練習冊

高中

初中

小學

影音先锋制服丝袜_欧美国产日本_亚洲欧美综合自拍_亚洲最大成人在线观看_成人一区二区三_色呦呦网站入口_亚洲欧美高清在线_黄页网站在线看_一卡二卡在线观看_在线观看免费黄网站