问答题{{B}}Directions:{{/B}}Read the following text carefully and then translate the underlined segments into Chinese. Your translation should be written neatly on ANSWER SHEET 2. All U. S. nuclear weapons production facilities are presently closed down, and if the various agreements are adhered to, those facilities will never be required except for one critical capability. All modern nuclear weapons use uranium (铀), plutonium (钚), and tritium (氚). Uranium and plutonium have very long half-lives, and there is large surplus of these materials. Tritium, however, has a relatively short half-life of about 12.6 years, so about 5 percent of the amount on hand must be replaced each year to maintain the current inventory. (46) {{U}}Because of the large retirement of nuclear weapons by the United States in compliance with early agreements and national policy, tritium from retired weapons has been used to make up that lost through natural decay. {{/U}}(47) {{/U}}However, in about 10 to 15 years, depending on future negotiations, the United States will need a guaranteed supply of tritium to maintain its stockpile at whatever level is agreed on.{{/U}} In anticipation of this future need to produce tritium, Defense Office Executive is pursuing two technologies. One uses a nuclear reactor that could also produce electricity whose sale would recover not only the capital cost of the reactor but also its annual operational cost. (48) {{U}}Unfortunately, the present Administration has a definite bias against nuclear power, so an alternative method is also being pursued even though it is agreed that it will cost twice as much as a reactor and use as much electricity as a reactor would produce.{{/U}} This technology uses an accelerator to produce high-energy protons that in turn produce neutrons. The main argument for the accelerator is that it produces no conventional nuclear wastes. (49) {{U}}Proponents readily admit that it will produce radioactive materials, but with a relatively short half-life compared with that of wastes from spent nuclear fuel.{{/U}} The fact that the accelerator will require the equivalent of a nuclear power plant to supply its electricity is ignored. (50) {{U}}Proponents 'also neglect to mention that about 22 percent of all electrical energy generated in the United States comes from nuclear power plants, so that 22 percent of the power used by the accelerator will generate conventional nuclear wastes, in addition to those the accelerator produces.{{/U}} There is an alternative to either the reactor or the accelerator, which is simply to buy the required tritium from Canada or Russia.

问答题(1)The onrush of cheap communications, powerful computers and the Internet all explain why many people feel that, nowadays, change is happening ever more rapidly as technological progress accelerates. Moore's law, that the power of microchips doubles every 18 months, has been tested and found correct. This is what gives people the sense of a world shifting beneath their feet. (2) Yet the implication that rapid change is a new phenomenon is again misleading. If you measure the time it takes for a technology to become widely diffused, today's experience does not seem unusual. Take the ear. The basic patent for an internal-combustion engine capable of powering a car was filed in 1877. By the late 1920s -- 50 years later-- over half of all American households owned a car. (3) The comparable dates for the computer are harder to tie down, but the first big computer, based on vacuum valves, was built in 1946. The transistor--the first semiconductor device--was invented at Bell Laboratories in 1948. The first patent for an integrated circuit was filed in 1959. Now, in 1999--The pace of introduction has been similar to that of the car. (4) You have to cheat, choosing only the date for the personal computer. Say (mid-1970s), or the internet (ditto) to make it seem much more rapid. Comparing its diffusion among private users is, you might say, unfair to the computer, for that machine's, main use is in businesses. On that measure, the best historical analogy is with electrification, and the spread of the electric dynamo into factories. (5) According to Paul David, a historian at Stanford University in California, the first electricity-generating stations had been installed in New York and London in 1881, but it was well into the 1920s before the dynamo became widely used and started to raise productivity. The adoption of the computer in business has also been slow, and failed to have any measurable impact on productivity until very recently.

问答题Write 200-250 words to comment on the topic given below. Use the proper space on the ANSWER SHEET. Topic: The More I Learn, The More Ignorant I Find Myself to Be

问答题He saw in front that white-haired old man, whose eyes flashed red with anger.

问答题你新买的一个熨斗在第一次使用时就坏了，塑料外壳从中间裂开，水从裂缝里流了出来。你因此而感到震惊，并希望店家能尽快为你换一个新的。

问答题sockpuppet

问答题bungee jumping

问答题depleted nuclear fuel

问答题China's aging population is increasing. We are faced with the problem of who and how to take care of the seniors. (敬老院: Home for the Seniors: 独生子女政策: one-child policy:独生子女: only child)

问答题 6 It is too much to expect one man single-handedly to rescue Sony, the Japanese firm which formerly made world-beating electronic products but is now almost as well-known for making losses. Even so, Kazuo Hirai, who unveiled his outlook for the company on April 12th less than a fortnight: after taking its management back into Japanese hands, has had a tumultuous start. On April 10th the company predicted it would lose 520 billion yen ($6.5 billion) in the fiscal year that ended on March 31st, the biggest loss in its 65-year history. 7 The new forecast, twice as bad as had been expected as recently as February, clobbered its shares, which have fallen by 40% in a year. The increased losses stemmed largely from an accounting charge: in the company"s fourth consecutive year of red ink, Sony decided it could no longer carry tax losses as an asset. "The news hit me hard," Mr. Hirai admitted. But paper losses aside, the underlying electronics business is also bleeding money. 8 Mr. Hirai laid out aggressive targets to improve performance, though he offered few concrete ideas on how to achieve them. Interestingly, he named three products as core to Sony: digital imaging, including cameras; gaming; and mobile phones. Conspicuous by their absence were televisions. They are not just a problem for Sony, which has lost money on the business for eight years. 9 Sharp and Panasonic, its two main Japanese rivals, are also likely to lose money on TVs this year, as well as on other parts of their electronic businesses. (On April 10th, Sharp, too, issued a profit warning). What makes televisions such a millstone for these firms is that none has the guts to exit the business completely; nor are they aggressively revamping it. Instead they lean towards what YoshiharuIzumi of J. P. Morgan, a securities firm, calls "managed decline". Mr. Hirai had already announced that Sony"s TV production goal would be halved, from 40m units to 20m. There was little to suggest he has any higher hope for TVs than to turn a profit in the year ending March 2014. 10 However, he left open the possibility of alliances with other Japanese television makers: talk of such cooperation has grown since Sharp was part-sold to Taiwan"s HonHai, Apple"s main supplier, last month.

问答题民政部

问答题Police records that were studied for five years from over 2 400 cities and towns show a surprising link between changes in the season and crime patterns. (Passage Two)

问答题{{I}} Topic: Is English Language Teaching Overemphasized in Chinese Education?{{/I}}

问答题The term U"gross national happiness"/U was coined in 1972 by King Jigme Singye Wang-chuck, who has opened Bhutan to the age of modernization.

问答题热钱流入

问答题 Real estate, in broad definition, is land and everything made permanently a part thereof, and the nature and extent of one's interest therein. In law, the word real, as it relates to property, means land as distinguished from personal property; and estate is de fined as the interest one has in property. Real estate may be acquired, owned, and conveyed (or transferred) by individuals; business corporations; charitable, religious, educational, fraternal, and various other nonprofit corporations; fiduciaries, such as trustees and executors; partnerships; and generally by any legal entity as determined and defined by the laws of the various states of the U.S. Limitations are established in connection with sales of real estate by minors, in competents, and certain types of corporations, and generally in cases involving some form of legal disability or lack of capacity.

问答题speech act

问答题It is a well-known fact that there are constant conflicts among different groups of people, and that people tend to blame their misfortunes on some outside other groups for their misfortunes. What are the causes of group prejudice? There seems to be little doubt that one of the principal causes of prejudice is fear: in particular the fear that the interests of our own group are going to be endangered by the actions of another. This is less likely to be the case in a stable, relatively unchanging society in which the .members of different social and occupational groups know what to expect of each other, and know what to expect for themselves. In times of rapid social and economic change, however, new occupations and new social roles appear, and people start looking jealously at eachother to see whether their own group is being left behind. Once prejudice develops, it is hard to stop, because there are often social forces at work which actively encourage unfounded attitudes of hostility and fear towards other groups. One such force is education: we all know that children can be taught history in such a way as to perpetuate old hatreds and old prejudices between racial and political groups. Another social influence that has to be reckoned with is the pressure of public opinion. People often think and act differently in groups from the way that they would do as individuals; it takes a considerable effort of will, and often calls for great courage, to stand out against one's fellows and insist they are wrong.

问答题performative act

问答题anarchism