单选题Human creativeness is boundless. With the advance of science and technology, a complete new means of communication -- Mobile Phone came to the world, which, being not fixed in one place like ordinary phones, greatly facilitates telephone communication. Although using mobile phone is convenient, it also has some negative factors. It tells us that we should pay more attention to the mobile phone etiquette. There is a research on American mobile phone etiquette. People are using cell phones in a Manhattan subway. Most Americans believe that there are unspoken rules about using mobile phone etiquette, according to an online poll. It's impolite to shout down their cell phones which may frighten other passengers. Checking emails, sending text messages and making telephone calls while in the company of other passengers are definite breeches of mobile phone manners. Texting during a date is also strictly forbidden. But the majority of American people questioned in the online poll said that they would not be offended if they received an electronic "thank you", instead of a written note and seventy-five percent had no objections to anyone using laptops, net books or cell phones in the bathroom. "Etiquette is first and foremost a question of awareness," said the author and etiquette expert Anna Post. But she described the results of the Harris Interactive poll commissioned by Intel as "pretty surprising statistics". Sixty-two percent of the 2,625 adults who took part in the survey agreed that cell phones, laptops, net books and other electronic devices are part of daily life. Fifty-five percent also thought that the demands of business mean people must stay connected, even if it involves taking a laptop on a holiday or answering a cell phone during a meal. Despite the need to be constantly connected and the general acceptance of the technology, people were more sensitive about technology abuses during holiday and religious activities. Nearly ninety percent of Americans think that cell phone use is unacceptable during a religious service and thirty percent admitted they would be offended if they received an online gift wish. But more than half revealed that they intended to send an electronic greeting card, instead of a traditional one. "These are issues about common sense," said Dr Genevieve Bell, an ethnographer and director of Intel's User Experience Group, adding that the social rules of when and how it is appropriate to use the technology are still being formed.

单选题The writer's experiment shows that down shifting ______.

单选题

单选题[此试题无题干]

单选题Galaxies are the major' building blocks Of the universe: A galaxy is giant family of many millions of stars, and it is held together by its own gravitational field. Most of the material universe is organized into galaxies of stars together with gas and dust.　　There are three main types of galaxy: spiral, elliptical, and irregular. The Milky Way is a spiral galaxy, a flattish disc of stars with two spiral arms emerging from its central nucleus. About one-quarter of all galaxies have this shape. Spiral galaxies are well supplied with the interstellar gas in which new stars form: as the rotating spiral pattern sweeps around the galaxy it compresses gas and dust, triggering the formation of bright young stars. The elliptical galaxies have a symmetrical elliptical or spheroidal shape with no obvious structure. Most of their member stars are very old and since ellipticals are devoid of interstellar gas, no new stars are forming in them. The biggest and brightest galaxies in the universe are ellipticals with masses of about 1013 times that of the sun, these giants may frequently be sources of strong radio emission, in which case they are called radio galaxies. About two-thirds of all galaxies are elliptical. Irregular galaxies comprise about one-tenth of all galaxies and they come in many subclasses.　　Measurement in space is quite different from measurement on Earth. Some terrestrial distances can be expressed as intervals of time, the time to fly from one continent to another or the time it takes to drive to work, for example. By comparison with these familiar yardsticks, the distances to the galaxies are incomprehensibly large, but they too are made more manageable by using a time calibration, in this case the distance that light travels in one year. On such a scale the nearest giant spiral galaxy, the Andromeda galaxy, is two million light years away. The most distant luminous objects seen by telescopes are probably ten thousand million light years away. Their light was already halfway here before the Earth even formed. The light from the nearby Virgo galaxy set out when reptiles still dominated the animal world.

单选题Being a dutiful father, Walt Disney used to take his small daughters to amusement parks, where he would wait patiently while they enjoyed the rides. As far as he was concerned, there was not (21) that was truly enjoyable about such places; the grounds were dirty, the material shabby, the parents bored. And so it is that, around 1934 or 35, the idea began to (22) in his mind (23) perhaps something could be done to bring more pleasure to children and adults (24) . It was a modest idea at first. When Disney brought it (25) in the open in 1948 ,he was merely proposing a small amusement area (26) a corner of the Burbank lot—eleven acres all (27) . Even so, the plan was not modest enough for Roy, who vetoed it instantly, lecturing at (28) about loans, debts, and extravagant dreams. Walter kept dreaming, nonetheless, and adding to his first concept. There should be more (29) rides and merry-go-rounds, he thought; it would be nice to have shops for the parents, soda fountains and theaters for all, a horse-drawn street car, plenty of things to do and see. (30) he went, either in the United States or (31) , he visited parks, county fairs, circuses, carnivals, open air attractions of all kinds—and, (32) all, zoos. (33) , Lilly announced that she would not travel with him (34) more if it was to visit another zoo. Most of the places that he saw looked dirty and sad (35) Disney. The only amusement park that (36) his approval was Copenhagen's Tivoli Gardens, because they were clean and cheerful, with friendly attendants and brightly painted attractions. The more he thought about his (37) , the more enthusiastic Disney felt about it. Although he was not (38) to the business side of such a venture, the park (39) more than a moneymaking device for him. He ;vas envisioning it as "a place for people to find happiness and knowledge... a place for parents and children to (40) pleasant times in one another's company; a place for teachers and pupils to discover greater ways of understanding and education./

单选题

单选题Prices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The price system of the United States is a very complex network composed of the prices of all the products bought and sold in the economy as well as those of a myriad(无数) of services, including labor, professions, transportation, and public-utility services. The interrelationship of all these prices make the "system" of prices. The price of any particular product or service is linked to a broad, complicated system of prices in which everything seems to depend more or less upon everything else. If one were to ask a group of randomly selected individuals to define "price", many would reply that price is an amount of money paid by the buyer to the seller of a product or service, or, in other words, that price is the money value of a product or service .as agreed upon in market transaction. This definition is, of course, valid as far as it goes. For a complete understanding of a price in any particular trans- action, much more than the money involved must be known. Both the buyer and seller should be" familiar with not only the money amount, but with the amount and quality of the product or service to be exchanged, the time and place at which the exchange will take place and payment will be made, the form of money to be used, the credit terms and discounts that apply to the transaction, guarantees on the product or service, delivery terms, return privilege, and other factors. In other words, both the buyer and the seller should be fully aware of all the factors that compose the total "package" being exchanged for the asked-for amount of money in order that they may evaluate a given price.

单选题The words in the following mean the same thing EXCEPT for

单选题Britainhasabad{{U}}{{U}}1{{/U}}{{/U}}forstrikes.InfactthereareothercountriesinWesternEuropeandtherestoftheworldthat{{U}}{{U}}2{{/U}}{{/U}}moreworkingdays{{U}}{{U}}3{{/U}}{{/U}}strikeseveryyearthanBritain.ThetroubleisthatinBritainthesestrikesoccurin{{U}}{{U}}4{{/U}}{{/U}}industries.Somepeoplesaythestrikesareduetotheunions.Otherpeople{{U}}{{U}}5{{/U}}{{/U}}thattheyareduetobadmanagement.Thereareover495unionsinBritainwitha{{U}}{{U}}6{{/U}}{{/U}}ofourmillionmembers--justover45%ofthe{{U}}{{U}}7{{/U}}{{/U}}population.Someunionsareverysmall.Over20havemorethan100,000members.Therearefourmaintypesofunion.Thefirstisgeneralunionswhosemembersdoallsortsofjobsinmany{{U}}{{U}}8{{/U}}{{/U}}.MrChapman'sunion,theTransportandGeneralWorkers'Union,isoneofthese.{{U}}{{U}}9{{/U}}{{/U}}therearetheindustry-basedunions,{{U}}{{U}}10{{/U}}{{/U}}theNationalUnionofRailwaymen,{{U}}{{U}}11{{/U}}{{/U}}membersallworkinthesameindustry.Thirdly,therearecraftunions,forexampletheBoilermakers'Unionwhichaccept{{U}}{{U}}12{{/U}}{{/U}}membersonlypeoplewith{{U}}{{U}}13{{/U}}{{/U}}skills.Lastly,therearetheso-called'WhiteCollar'unionswhosemembersdoclerical{{U}}{{U}}14{{/U}}{{/U}}officework.Unionsdonot{{U}}{{U}}15{{/U}}{{/U}}onlyto{{U}}{{U}}16{{/U}}{{/U}}money.Theyalso{{U}}{{U}}17{{/U}}{{/U}}theirmembers.Thyprovidesick{{U}}{{U}}18{{/U}}{{/U}}andtrytoimproveworkingconditions.Tradeunionistssaythatwemust{{U}}{{U}}19{{/U}}{{/U}}theunionsforthegreat{{U}}{{U}}20{{/U}}{{/U}}inworkingconditionsinthelasthundredyears.

单选题Biologically, there is only one quality which distinguishes us from animals: the ability to laugh. In a universe which appears to be utterly devoid of humor, we enjoy this supreme luxury. And it is a luxury, for unlike any other bodily process, laughter does not seem to serve a biologically useful purpose. In a divided world, laughter is a unifying force. Human beings oppose each other on a great many issues. Nations may disagree about systems of government and human relations may be plagued by ideological factions and political camps, but we all share the ability to laugh. And laughter, in turn, depends on that most complex and subtle of all human qualities: a sense of humor. Certain comic stereotypes have a universal appeal. This can best be seen from the world-wide popularity of Charlie Chaplin"s early films. The little man at odds with society never fails to amuse no matter which country we come from. As that great commentator on human affairs, Dr. Samuel Johnson, once remarked, "Men have been wise in very different modes; but they have always laughed in the same way." A sense of humor may take various forms and laughter may be anything from a relined tinkle to an earth quaking roar, but the effect is always the same. Humor helps us to maintain a correct sense of values. It is the one quality which political fanatics appear to lack. If we can see the funny side, we never make the mistake of taking ourselves too seriously. We are always reminded that tragedy is not really far removed from comedy, so we never get a lopsided view of things. This is one of the chief functions of satire and irony. Human pain and suffering are so grim; we hover so often on the brink of war; political realities are usually enough to plunge us into total despair. In such circumstances, cartoons and satirical accounts of somber political e vents redress the balance. They take the wind out of pompous and arrogant politicians who have lost their sense of proportion. They enable us to see that many of our most profound actions are merely comic or absurd. We laugh when a great satirist like Swift writes about war in Gulliver"s Travels. The Lilliputians and their neighbors attack each other because they can"t agree which end to break an egg. We laugh because we are meant to laugh; but we are meant to weep too. It is no wonder that in totalitarian regimes any satire against the establishment is wholly banned. It is too powerful a weapon to be allowed to flourish in totalitarian regimes. The sense of humor must be singled out as man"s most important quality because it is associated with laughter. And laughter, in turn, is associated with happiness. Courage, determination, initiative--these are qualities we share with other forms of life. But the sense of humor is uniquely human. If happiness is one of the great goals of life, then it is the sense of humor that provides the key.