题目内容
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[单选题]
Without electricity, human life______quite different today.
A.would be
B.will be
C.would have been
D.is
单选题，请选择你认为正确的答案：
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A．is
B．will he
C．would have been
D．would be
更多“Without electricity, human lif…”相关的问题
第2题
In Paragraph 5", the powerless" probably refers to ______.A．areas short of electricityB．da
In Paragraph 5", the powerless" probably refers to ______.
A．areas short of electricity
B．dams without power stations
C．poor countries around India
D．common people in the Narmada Dam area
第3题
Knowledge sought directly for its practical applications will have immediate and foreseeable success, but not the kind of important result whose revolutionary scope is in large part unforeseen, except by the imagination of the Utopians. Let me recall a well—known example. It the Greek mathematicians had not applied themselves to the investigation of conic （圆锥的） sections, zealously and without the least suspicion that it might someday be useful, it would not have been possible centuries later to navigate far from shore. The first men to study the mature of electricity could not imagine that their experiments, carried on because of mere intellectual curiosity, would eventually lead to modern electrical technology, without which we can scarcely conceive of contemporary life.英译中
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第4题
砜胺法（Sulfinol）——混合溶剂吸收法 Sulfinol - mixed solvent absorption method优点merit（）
A.酸性负荷高，处理量大。High acid load, large capacity.#B.溶液循环量小，溶液比热及汽化潜热均小，水、电和蒸汽耗量都比较低。Solution circulation amount is small, solution specific heat and latent heat of vaporization are small, water, electricity and steam consumption are relatively low.#C.净化度高。High purification degree.#D.不易起泡，对设备腐蚀小。Not easy to bubble, small corrosion to equipment.#E.可脱除有机硫，而溶液不会变质。Organic sulfur can be removed without deterioration of the s
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第5题
Early in November 1965, New York was blacked out by an electricity failure （停电). The May
Early in November 1965, New York was blacked out by an electricity failure (停电). The Mayor promised that it would not happen again. Pessimists (悲观主义者) were certain that it would happen again within five years. In July 1977, there was a repeat performance which produced a serious disorder throughout the city. At that time the city was in one of its worst heat waves.
In 1965, there was little crime during the darkness, and fewer than a hundred people were arrested. In 1977, hundreds of stores were broken into and looted (劫掠). Nearly 4,000 people were arrested but far more disappeared into the darkness of the night. The number of policeman available was far from enough and some looters even carry guns.
Hospitals had to treat hundreds of people cut by glass from shop windows. Banks and most business remained closed the next day. The blackout started at 9:30 P.M., when lightning hit and knocked out supply cables. Many stores were thus caught by surprise. For twenty-four hours, New York realized how helpless it was without electricity.
According to the first paragraph, who were right: the authorities or the pessimists？
A．The authorities.
B．The pessimists.
C．Both.
D．Neither.
第6题
In November 1965, New York was blacked out by an electricity failure. The authorities prom
ised that it would not happen again. Pessimists were certain that it would occur again within five years at the latest. In July 1977, there was a repeat performance which produced varying degrees of chaos throughout the city of eight million people. In 1965, the failure occurred in the cool autumn and at a time of comparative prosperity. In 1997, the disaster was much more serious because it came when unemployment was high and the city was suffering from one of its worst heat waves.
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In 1965, there was little crime or looting during the darkness, and fewer than a hundred people were arrested, in 1977, hundreds of stores were broken into and looted. Looters smashed shop windows and helped themselves to jewelry, clothes or television sets. Nearly 4, 000 people were arrested but far more disappeared into the darkness of the night. The number of policemen available was quite inadequate and they wisely refrained from using their guns against mobs which far outnumbered them and included armed men.
Hospitals had to treat hundreds of people cut by glass from shop windows. Banks and most businesses remained closed the next day. The black-out started at 9:30 p. m. , when lightning hit and knocked out vital cables. Many stores were thus caught by surprise.
The vast majority of New Yorkers, however, were not involved in looting. They helped strangers, distributed candles and batteries, and tried to survive in a nightmare world without traffic lights, refrigerators, elevators, water and electrical power. For twenty-four hours, New York realized how helpless it was without electricity.
Look at the first paragraph, who were fight？ The authorities or the pessimists？
A．The authorities.
B．The pessimists.
C．Both.
D．Neither.
第7题
Researchers at Stanford University have developed a new material that can move heat out of buildings and into space.The material can cool buildings even on hot days.
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The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panels.However,instead of turning sunlight into energy as solar panels do,the material turns heat into infrared radiation.
Shanhui Fan is an electrical engineering professor at Stanford University.He says that the panels have a layer of material that is like sand.The panels also act like a mirror.They take heat out of buildings and reflect the light from the sun.Both the heat and sunlight are sent 100 kilometers into outer space.
The panels are cool to the touch,even in the sun.Researchers say they can reduce the indoor temperature to nearly five degrees Celsius below the temperature outside.
Mr.Fan says it is like having a window into space.He says the heat is sent directly into space without warming the air.Buildings in developing countries that do not have electricity or air conditioning could use the panels.In areas where one is off-grid,there is a significant potential benefit for storing medicine or even food.In many of these situations,being able to reduce the temperature is important.And this would provide a way to do it.
The Stanford researchers described their technology in the science publication Nature.They say the main problem is creating actual cooling systems using the high-tech panels.It may be possible to develop a cooling spray technology in the next three to five years that could be used on existing solid structures.
1、A new material developed by researchers at Stanford University can___
A.take out the heat to keep the building safe
B.absorb heat to keep the building warm
C.move out heat to keep the building cool
2、Which of the following statement about the cooling material is CORRECT?
A.The cooling material turns sunlight into energy.
B.The cooling material changes heat to infrared radiation.
C.The cooling material works the same way as solar panels.
3、In the sun,the panels can become___to touch.
A neither too cold nor too hot
B.too hot
C.too cold
4、In areas where there is no electricity,the panels have the potential to___
A.cook food and boil water.
B.store medicine and even food.
C.keep people warm.
5、The Stanford researchers present their technology___
A.on the Internet
B.in a TV program
C.in a science journal
第8题
For me, scientific knowledge is divided into mathematical sciences, natural sciences or sc
iences dealing with the natural world (physical and biological sciences), and sciences dealing with mankind (psychology, sociology, all the sciences of cultural achievements, every kind of historical knowledge).
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Apart from these sciences is philosophy, about which we will talk later. In the first place, all this is pure or theoretical knowledge, sought only for the purpose of understanding, in order to fulfill the need to understand that is intrinsic and con-substantial to man. What distinguishes man from animals is that he knows and needs to know. If man did not know that the world existed, and that the world was of a certain kind, that he was in the world and that he himself was of a certain kind, he wouldn't be man. The technical aspects or applications of knowledge are equally necessary for man and are of the greatest importance, because they also contribute to defining him as man and permit him to pursue a life increasingly more truly human.
But even while enjoying the results of technical progress, man must defend the primacy and autonomy of pure knowledge. Knowledge sought directly for its practical applications will have immediate and foreseeable success, but not the kind of important result whose revolutionary scope is for the most part unforeseen, except by the imagination of the Utopians. Let me recall a well-known example. If the Greek mathematicians had not applied themselves to the investigation of conic section zealously and without the least suspicion that it might someday be useful, it would not have been possible centuries later to navigate far from shore. The first men to study the nature of electricity could not imagine that their experiments, carried on because of mere intellectual curiosity, 'would eventually lead to modern electrical technology, without which we can scarcely conceive of contemporary life.
Pure knowledge is valuable for its own sake, because the human spirit cannot resign itself to ignorance. But, in addition, it is the foundation for practical results that would not have been reached if this knowledge had not been sought disinterestedly.
The author does not include among the sciences the study of
A．literature.
B．chemistry.
C．astronomy.
D．anthropology.
第9题
Questions are based on the following passage．Without proper planning, tourism can cause pr
Questions are based on the following passage．
Without proper planning, tourism can cause problems．For example, too many tourists can crowd public places that are also enjoyed by the inhabitants of a country． If tourists create too much traffic, the inhabitants become annoyed and unhappy． They begin to dislike tourists and to treat them impolitely． They forget how much tourism can help the country's economy．
(79) It is important to think about the people of a destination country and how tourism affects them． Tourism should help a country keep the customs and beauty that attract tourists． Tourism should also advance the well-being of local inhabitants．
Too much tourism can be a problem． If tourism grows too quickly, people must leave other jobs to work in the tourism industry． This means that other parts of the country's economy can suffer．
On the other hand, if there is not enough tourism, people can lose jobs． Businesses can also lose money． It costs a great deal of money to build large hotels, airports, air terminals, first- class roads, and other support facilities needed by tourist attractions． (80) For example, a major international-class tourism hotel can cost as much as 50 thousand dollars per room to build． If this room is not used most of the time, the owners of the hotel will lose money．
Building a hotel is just a beginning． There must be many support facilities as well, including roads to get to the hotel, electricity, sewers to handle waste, and water． All of these support facilities cost money．If they are not used because there are not enough tourists, jobs and money are lost．
第56题答案为 查看材料
A.conditions
B.cases
C.times
D.occasions
第10题
The fridge is considered necessary.It has been so since the 1960s when packaged food l
ist appeared with the label: "Store in the refrigerator."
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In my fridgeless Fifties childhood, 1 was fed well and healthy.The milkman came every day, the grocer, the butcher (肉商), the baker, and the ice-cream man delivered two or three times each week.The Sunday meat would last until Wednesday and surplus(剩余的) bread and milk became all kinds of cakes.Nothing was wasted, and we were never troubled by rotten food.Thirty years on food deliveries have ceased, fresh vegetables are almost unobtainable in the country.
The invention of the fridge contributed comparatively little to the art of food preservation.Many well-tried techniques already existed -- natural cooling, drying, smoking, salting, sugaring, bottling...
What refrigeration did promote was marketing --- marketing hardware and electricity, marketing soft drinks, marketing dead bodies of animals around the world in search of a good price.
Consequently, most of the world's fridges are to be found, not in the tropics where they might prove useful, but in the rich countries with mild temperatures where they are climatically almost unnecessary.Every winter, millions of fridges hum away continuously, and at vast expense, busily maintaining an artificially-cooled space inside an artificially-heated house -- while outside, nature provides the desired temperature free of charge.
The fridge's effect upon the environment has been evident, while its contribution to human happiness has been not important.
1.The statement "In my fridgeless fifties childhood, I was fed well and healthily." suggests that the author was well-fed and healthy even without a fridge in his fifties.()
2.The author says that nothing was wasted before the invention of fridges because people had effective ways to preserve food.()
3.Consumers benefited the most from fridges according to the author？()
4.What refrigeration did promote was food-preserving.()
5.The author is critical to fridges.()
