2021年6月大学英语四级成绩查询时间,2021年12月大学英语四级阅读理解赏析

【#四六级考试# 导语】因为坚持，才会有破茧成蝶这样美好的故事。下面是©文档大全网整理的内容，希望对你们有帮助！

1.2021年12月大学英语四级阅读理解赏析

　　The stone age, The Iron Age. Entire epochs have been named for materials. So what to call the decades ahead? The choice will be tough. Welcome to the age of superstuff. Material science -- once the least sexy technology – is bursting with new, practical discoveries led by superconducting ceramicsthat may revolutionize electronics. But superconductors are just part of the picture: from house and cars to cook pots and artificial teeth, the world will someday be made of different stuff. Exotic plastics, glass and ceramics willshape the future just as surely as have genetic engineering and computer science.

　　The key to the new materials is researchers’ increasing ability to manipulate substances at the molecular level. Ceramics, for example, have long been limited by their brittleness. But by minimizing the microscopic imperfections that cause it, scientists are making far stronger ceramics that still retain such qualities as hardness and heat resistance. Ford Motor Co. now uses ceramic tools to cut steel. A firm called Kyocera has created a line of ceramic scissors and knives that stay sharp for years and never rust or corrode.

　　A similar transformation has overtaken plastics. High-strength polymers now form bridges, ice-skating rinks and helicopter rotors. And one new plastic that generates electricity when vibrated or pushed is used in electric guitars, touch sensors for robot hands and karate jacketsthat automatically record each punch and chop. Even plastic litter, which once threatened to permanently blot the landscape, has proved amenable to molecular tinkering. Several manufacturers now make biodegradable forms; some plastic six-pack rings for example, gradually decompose when exposed to sunlight. Researchers are developing ways to make plastics as recyclable as metal or glass. Besides, composites – plastic reinforced with fibers of graphite or other compounds – made the round-the-world flight of the voyager possible and have even been proved in combat: a helmet saved an infantryman’s life by deflecting two bullets in the Grenada invasion.

　　Some advanced materials are old standard with a new twist. The newest fiberoptic cable that carry telephone calls cross-country are made of glass so transparent that a piece of 100 miles thick is clearer than a standard window pane.

　　But new materials have no impact until they are made into products. And that transition could prove difficult, for switching requires lengthy research and investment. It can be said a firmer handle on how to move to commercialization will determine the success or failure of a country in the near future.

　　1. How many new materials are mentioned in this passage?

　　[A] Two

　　[B] Three

　　[C] Four

　　[D] Five

　　2. Why does the author mention genetic engineering and computer science?

　　[A] To compare them with the new materials.

　　[B] To show the significance of the new materials on the future world.

　　[C] To compare the new materials to them.

　　[D] To explain his view point.

　　3. Why is transition difficult?

　　[A] Because transition requires money and time.

　　[B] Because many manufacturers are unwilling to change their equipment.

　　[C] Because research on new materials is very difficult.

　　[D]Because it takes 10 years.

　　4. Where lies success of a country in the New Age of superstuff?

　　[A] It lies in research.

　　[B] It lies in investment.

　　[C] It lies in innovation.

　　[D] It lies in application.

2.2021年12月大学英语四级阅读理解赏析

　　From the health point of view we are living in a marvelous age. We are immunized from birth against many of the most dangerous diseases. A large number of once fatal illnesses can now be cured by modern drugs and surgery. It is almost certain that one day remedies will be found for the most stubborn remaining diseases. The expectation of life has increased enormously. But though the possibility of living a long and happy life is greater than ever before, every day we witness the incredible slaughter of men, women and children on the roads. Man versus the motor-car! It is a never-ending battle which man is losing. Thousands of people the world over are killed or horribly killed each year and we are quietly sitting back and letting it happen.

　　It has been rightly said that when a man is sitting behind a steering wheel, his car becomes the extension of his personality. There is no doubt that the motor-car often brings out a man's very worst qualities. People who are normally quiet and pleasant may become unrecognizable when they are behind a steering-wheel. They swear, they are ill-mannered and aggressive, willful as two-years-olds and utterly selfish. All their hidden frustrations, disappointments and jealousies seem to be brought to the surface by the act of driving.

　　The surprising thing is that society smiles so benignly on the motorist and seems to condonehis behaviour. Everything is done for his convenience. Cities are allowed to become almost uninhabitable because of heavy tragic; towns are made ugly by huge car parks; the countryside is desecrated by road networks; and the mass annual slaughter becomes nothing more than a statistic, to be conveniently forgotten.

　　It is high time a world code were created to reduce this senseless waste of human life. With regard to driving, the laws of some countries are notoriously lax and even the strictest are not strict enough. A code which was universally accepted could only have a dramatically beneficial effect on the accident rate. Here are a few examples of some the things that might be done. The driving test should be standardized and made far more difficult than it is; all the drivers should be made to take a test every three years or so; the age at which young people are allowed to drive any vehicle should be raised to at least 21; all vehicles should be put throughstringent annual tests for safety. Even the smallest amount of alcohol in the blood can impair a person's driving ability. Present drinking and driving laws (where they exist) should be mad much stricter. Maximum and minimum speed limits should be imposed on all roads. Governments should lay down safety specifications for manufacturers, as has been done in the USA. All advertising stressing power and performance should be banned. These measures may sound inordinately harsh. But surely nothing should be considered as to severe if tit results in reducing the annual toll of human life. After all, the world is for human beings, not motor-cars.

　　1. The main idea of this passage is

　　[A] Traffic accidents are mainly caused by motorists.

　　[B] Thousands of people the world over are killed each year.

　　[C] The laws of some countries about driving are too lax.

　　[D] Only stricter traffic laws can prevent accidents.

　　2. What does the author think of society toward motorists?

　　[A] Society smiles on the motorists.

　　[B] Huge car parks are built in the cities and towns.

　　[C] Victims of accidents are nothing.

　　[D] Society condones their rude driving.

　　3. Why does the author say: 'his car becomes the extension of his personality?'

　　[A] Driving can show his real self.

　　[B] Driving can show the other part of his personality.

　　[C] Driving can bring out his character.

　　[D] His car embodies his temper.

　　4. Which of the followings is NOT mentioned as a way against traffic accidents?

　　[A] Build more highways.

　　[B] Stricter driving tests.

　　[C] Test drivers every three years.

　　[D] raise age limit and lay down safety specifications.

　　5. The attitude of the author is

　　[A] ironical

　　[B] critical

　　[C] appealing

　　[D] militant

3.2021年12月大学英语四级阅读理解赏析

　　Police fired tear gas and arrested more than 5,000passively resisting protestors Friday in an attempt tobreak up the largest antinuclear demonstration everstaged in the United States. More than 135,000 demonstrators confronted police on the construction site of a 1,000-megawatt nuclear power plant scheduled to provide power to most of southern New Hampshire. Organizers of the huge demonstration said, the protest was continuing despite the police actions. More demonstrators were arriving to keep up the pressure on state authorities to cancel the project. The demonstrator had charged that the project was unsafe in the densely populated area, would create thermal pollution in the bay, and had no acceptable means for disposing of its radioactive wasters. The demonstrations would go on until the jails and the courts were so overloaded that the state judicial system would collapse.

　　Governor Stanforth Thumper insisted that there would be no reconsideration of the power project and no delay in its construction set for completion in three years."This project will begin on time and the people of this state will begin to receive its benefits on schedule. Those who break the law in misguided attempts to sabotage the project will be dealt with according to the law," he said. And police called in reinforcements from all over the state to handle the disturbances.

　　The protests began before dawn Friday when several thousand demonstrators broke through police lines around the cordoned-off construction site. They carried placards that read "No Nukesis Good Nukes,""Sunpower, Not Nuclear Power," and "Stop Private Profits from Public Peril." Theydefied police order to move from the area. Tear gas canisters fired by police failed to dislodgethe protestors who had come prepared with their own gas masks or facecloths. Finally gas-masked and helmeted police charged into the crowd to drag off the demonstrators one by one. The protestors did not resist police, but refused to walk away under their own power. Those arrested would be charged with unlawful assembly, trespassing, and disturbing the peace.

　　1. What were the demonstrators protesting about?

　　[A] Private profits.

　　[B] Nuclear Power Station.

　　[C] The project of nuclear power construction.

　　[D] Public peril.

　　2. Who had gas-masks?

　　[A] Everybody.

　　[B] A part of the protestors.

　　[C] Policemen.

　　[D] Both B and C.

　　3. Which of the following was NOT mentioned as a reason for the demonstration?

　　[A] Public transportation.

　　[B] Public peril.

　　[C] Pollution.

　　[D] Disposal of wastes.

　　4. With whom were the jails and courts overloaded?

　　[A] With prisoners.

　　[B] With arrested demonstrators.

　　[C] With criminals.

　　[D] With protestors.

　　5. What is the attitude of Governor Stanforth Thumper toward the power project and the demonstration?

　　[A] stubborn.

　　[B] insistent.

　　[C] insolvable.

　　[D] remissible.

2021年12月大学英语四级阅读理解赏析.doc

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