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  The more time scientists spend designing computers, the more they wonder at human brain.Tasks that puzzle the most advanced supercomputer-recognizing a face, reading a handwritten note-are child’s play for the 3-pound organ.Most important,unlike any ordinary computer, the brain can learn from its mistakes.Researchers have tried for years to program computers to imitate the brain’s abilities, but without success.Now a growing number of designers believe they have the answer:if a computer is to work more like a person and less 1ike an over-grown calculator it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells or neurons.

  Ordinary computers work by following a chainlike sequence of detailed instructions.A1though very fast, their processors can perform only one task at a time.This approach works best in solving problems that can be broken down into simpler logical pieces.The processors in a neural-network computer,by contrast,form a network much like the nerve cells in the brain.Since these artificial(人造的).neurons are interconnected,they can share information and perform tasks at the same time.This two-dimensional approach works best at recognizing patterns.

  Instead of programming a neural-network computer to make decisions, its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine.

  Neural networks come in all shapes and sizes.Until now most exist as software simulations(模拟品)because redesigning computer chips took a lot of time and money.By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes.

1.What does the expression“this two-dimensional approach”in Paragraph 2 refer to?(回答字数不超过6个)

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2.According to the passage, what is the main difference between human brain and ordinary computers?(回答字数不超过10个)

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3.Why do scientists use software instead of hardware in their experiments?(回答字数不超过8个)

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答案:
解析:

  1.Sharing information and performing tasks.

  2.Human brain can learn from mistakes./Human brain distributes information across an interconnected web of neurons

  3.Because it can save much time and money./To save much time and money


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科目:高中英语 来源:2008年普通高等学校招生全国统一考试(湖南卷)、英语试题及答案 题型:051

简答题

  Every January, Breckenridge hosts the International Snow Sculpture Championships.Fourteen teams travel from all over the world to Switzerland to compete.Teams sculpt for sixty-five hours over five days.Each team hopes that when the time is up, its sculpture will be judged the best.

  As the championship begins, the fourteen teams are faced with huge blocks of snow that weigh twenty tons each.The sculptors bring out their favorite tools that work best on the hard iced snow, but they are not allowed to employ tools that use electricity.

  Most teams are inspired by what they have seen in daily life.For example, one team carved a teapot with tea pouring out.Another team sculpted a little cat on its hind feet(后脚)reaching into a fish bowl complete with water ripples(涟漪)and a crab (螃蟹)trying to attack the cat.In 2006, Team USA sculpted a golden dog looking at its image reflected in a mirror.To create the effect that the little dog saw its reflection in the glass, the artists carved two dogs facing each other with their paws(脚爪) touching.

  As the final hours of the competition tick by, exhausted team members add last-minute detail.They use small brooms to brush off snow caught in tiny holes.One team member counts down the last five minutes while others are busy cleaning up the tools.If they leave any tools behind, they will be out.When the whistle bows, everyone must step away from the sculpture.The judges then vote on creativity, technical skills, and visual impact(视觉效果)of the designs.

  In 200, Team USA took first place for their golden dog sculpture titled “Discovery”.But the competition is not just about medals and ribbons.“It’s not about the prize,” said Rob Neyland, Team USA’s captain.“It’s about touching the audience.”

  Every year, as the championship ends, each team is already dreaming of the next masterpiece it will design.

1.What kind of tools are the sculptors Not permitted to use?(回答词数不超过6个)

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2.What gives the sculptors ideas for their creative work?(回答词数不超过9个)

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3.Why did Team USA win the competition in 2006?(回答词数不超过15个)

________________________________

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科目:高中英语 来源:湖南省保靖县民族中学2011-2012学年高一上学期期中考试英语试题 题型:051

阅读简答题,每小题回答不超过规定的词数。

  Many everyday American expressions are based on colorsRed is a hot colorAmericans often use it to express heatThey may say they are red hot about something unfairWhen they are red hot, they are very angry about something

  People sometimes say they are in the pink when they are in good healthThe expression was first used in America at the beginning of the 20th centuryIt probably comes from the fact that many babies are born with a nice pink color that shows that they are in good health

  Blue is a cool colorThe traditional blues music in the United States is the opposite(相反的)of red hot musicBlues is slow and sadSomeone who is blue is very sad

  The color green is natural for trees and grassBut it is an unnatural color for humansA person who has a sick feeling stomach may say she feels a little greenA passenger on a boat who is feeling very sick from high waves may look very greenSometimes a person may be upset because he does not have something as nice as a friend has, like a fast new carThat person may say he is green with envy(妒忌).Some people are green with envy because a friend has more dollars or greenbacksDollars are called greenbacks because that is the color of the backside of the paper money

  People describe a day in which everything goes wrong as a black dayThe date of a major tragedy is remembered as a black dayBlackouts were coming during World War IIOfficials would order all lights in a city turned off to make it difficult for enemy planes to find a target in the dark of night

1.What color will people use when they are very sad?(not more than 3 words)

2.When do people use green color?(not more than 10 words)

3.What’s the real meaning of the underlined phrase “red hot music” in English?(not more than 6 words)

4.What is the main idea of the passage?(not more than 5 words)

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