问答题电脑、网络与健康 电脑已经成为人们生活和工作不可缺少的工具， 它在给人们带来诸多方便的同时， 也带来了一些烦恼和忧虑，因为人们长期从事电脑工作对健康的影响是比较直接的。 电脑和网络使用不当危害健康 一是对身体健康的直接影响。 电脑显示器利用电子枪发射电子束来产生图像， 并伴有辐射与电磁波，长期使用会伤害人们的眼睛，诱发一些眼病，如青光眼等；键盘上键位密集，键面一定的弹力和阻力， 长期击键会对手指和上肢不利； 操作电脑时， 体形和全身难得有变化，操作向着高速、单一、重复的特点发展，强迫体位比重越来越大，容易导致肌肉骨骼系统的疾患，其中，计算机操作时所累及的主要部位有腰、颈、肩、肘、腕部等。操作电脑过程中注意力高度集中，眼、手指快速频繁运动，使生理、心理过度重负，从而产生睡眠多梦、神经衰弱、头部酸胀、机体免疫力下降，甚至会诱发一些精神方面的疾病。这种人易丧失自信，内心时常紧张、烦躁、焦虑不安，最终导致身心疲惫。 二是导致网络综合征。 长时间无节制地花费大量时间和精力在互联网上持续聊天、 浏览，会导致各种行为异常、 心理障碍、 人格障碍、 交感神经功能部分失调， 严重者发展成为网络综合征，该病症的典型表现为：情绪低落、兴趣丧失、睡眠障碍、生物钟紊乱、食欲下降和体重减轻、精力不足、精神运动性迟缓和激动、自我评价降低、思维迟缓、不愿意参加社会活动、很少关心他人、饮酒和滥用药物等。 三是电脑散发的气体危害呼吸系统。 英国过敏症基金会的研究人员最近发表的一份研究报告指出，办公设备会释放有害人体健康的臭氧气体，而主要元凶是电脑、激光打印机等。这些臭氧气体不仅有毒， 而且可能造成某些人呼吸困难， 对于那些哮喘病和过敏症患者来说，情况就更为严重了。 另外， 较长时间待在臭氧气体浓度较高的地方， 还会导致肺部发生病变。 怎样减少电脑网络的危害 客观地说， 电脑对人体生理和心理方面的负面影响已日益受到人们的重视。 在电脑普及程度比较高的国家里， “电脑综合征”已成为很普遍的现代病。为此科学使用电脑，减少电脑和网络的危害是十分必要的。 一是要增强自我保健意识。 如工作间隙注意适当休息， 一般来说， 电脑操作人员在连续工作 1 小时后应该休息 10 分钟左右。并且最好到操作室之外活动活动身体。平时要加强体育锻炼， 增强体能， 要定期进行身体检查和自我心理测定， 一旦发现生理、 心理上的有关症状，可在一段时间内适当调整上机时间，缓解症状。 二是注意工作环境。 电脑室内光线要适宜， 不可过亮或过暗， 避免光线直接照射在荧光屏上而产生干扰光线， 工作室要保持通风干爽， 使那些有害气体尽快排出， 尽量用非击打式打印机减少噪音等等。 三是注意补充营养。 电脑操作者在荧光屏前工作时间过长， 视网膜上的视紫红质会被消耗掉，而视紫红质主要由维生素 A 合成。因此，电脑操作者应多吃些胡萝卜、白菜、豆芽、豆腐、红枣、橘子以及牛奶、鸡蛋、动物肝脏、瘦肉等食物，以补充人体内维生素 A 和蛋白质。多饮些茶，茶叶中的茶多酚等活性物质会有利于吸收与抵抗放射性物质。

问答题关于意识形态的讨论（ideology）

问答题46. The classic difficulty felt with democracy arises from the fact that democracy can never express the will of the whole people because there never exists any such unchanging will (at least in any society that call itself democratic). The concept of government of the whole people by the whole people must be looked on as being in the poetry rather than in the prose of democracy; the fact of prose is that real democracy means government by some kind of dominant majority. 47. And the ever-present danger, repeatedly realized in fact, is that this dominant majority may behave toward those who are not of the majority in such a manner as to undermine the moral basis of the right of people, because they are people, to have some important say in the setting of their own course and in use of their own faculties. Other forms of government may similarly fail to respect human independence. But there is at least no contradiction in that; the underlying assumption of every kind of government by wiser and betters is that people on the whole are not fit to manage their own affairs, but must have someone else do it for them, and there is no paradox when such a treats its subjects without respect, or deals with them on the basis of their having no rights that the government must take into account. 48. But democracy affirms that people are fit to control themselves, and it cannot live in the same air with the theory that there is no limit to the extent to which public power -- even the power of a majority can interfere with the lives of people. Rational limitation on power is therefore not a contradiction to democracy, but is of the very essence of democracy as such. Other sorts of government may impose such limitations on themselves as an act of grace. 49. Democracy is under the moral duty of limiting itself because such limitation is essential to the survival of that respect for humankind which is in the foundations of democracy. Respect for the freedom of all people cannot, of course, be the only guide, for there would then be no government. Delicate ongoing compromise is what must be looked for. 50. But democracy, unless it is to deny its own moral basis, must accept the necessity for making this compromise and for giving real weight to the claims of those without the presently effective political power to make their claims prevail in elections.

问答题在过去三年中我们厂的自行车产量翻了一番。

问答题 My View on the Income Gap 1. 收入悬殊是当前社会的一种现象。 2. 人们对此褒贬不一。 3. 我的看法。

问答题Directions: In this section there is a text in English. Translate the five underlined sentences into Chinese. Large, multinational corporations may be the companies whose ups and downs seize headlines. (31) {{U}}But to a far greater extent than most Americans realize, the economy's vitality depends on the fortunes of tiny shops and restaurants, neighborhood services and factories{{/U}}. Small businesses, defined as those with fewer than 100 workers, now employ 60 percent of the workforce and are expected to generate half of all new jobs between now and the year 2000．Some 1.2 million small firms have opened their doors over the past 6 years of economic growth, and 1989 will see an additional 200, 000 entrepreneurs striking off on their own. Too many of these pioneers, however, will blaze ahead unprepared. Idealists will overestimate the clamor for their products or fail to factor in the competition. Nearly everyone will underestimate, often fatally, the capital that success requires. (32) {{U}}Midcareer executives, forced by a takeover or a restructuring to quit the corporation and find another way to support themselves, may savor(欣赏) the idea of being their own boss but may forget that entrepreneurs must also, at least for a while, be bookkeepers and receptionists, too{{/U}}. According to Small Business Administration data, 24 of every 100 businesses starting out today are likely to disappear in two years, and 27 more will have shut their doors four years from now. By 1995, more than 60 of those 100 start-ups will have folded. A new study of 3,000 small businesses, sponsored by American Express and the National Federation of Independent Business, suggests slightly better odds: three years after start-up, 77 percent of the companies surveyed were still alive. (33) {{U}}Most credited their success in large' part to having picked a business they already were comfortable in. Eighty percent had worked with the same product or service in their last jobs. {{/U}} Thinking through an enterprise before the launch is obviously critical. But many entrepreneurs forget that a firm's health in its infancy may be little indication of how well it will age. You must tenderly monitor its pulse. In their zeal to expand, small business owners often ignore early warning signs of a stagnant market or of decaying profitability. (34) {{U}}They hopefully pour more and more money into the enterprise, preferring not to acknowledge eroding profit margins that means the market for their ingenious service or product has evaporated, or that they must cut the payroll or vacate their lavish offices. {{/U}}Only when the financial well runs dry do they see the seriousness of the illness, and by then the patient is usually too far gone to save. Frequent checks of your firm's vital signs will also guide you to a sensible rate of growth. (35) {{U}}To snatch opportunity, you must spot the signals that it is time to conquer the new markets, add products or perhaps franchise your hot ideas.{{/U}}

问答题Key Points Concerning A Sales Contract A sales contract embodies a set of different terms such as quality, quantity, payments, delivery, and insurance, etc. When the exporter and customer are negotiating, they should consider and agree upon these terms. Apparently, each party hopes to stipulate terms favorable for himself. But arrangements which are advantageous to one party are often disadvantageous to the other party. Therefore, some practical suggestions and tactics should be given adequate importance in negotiation of a contract. In this sector, you will have a look on the problems international trade negotiators may face and suggestions in solving them. Name of goods It is recommended that the names of goods to be exported correspond to the names used in the customs lists of the importing country, in order to minimize problems at customs, and to facilitate calculation of import duties. The exporter should be consistent in the names he uses for his products, referring to them precisely as he does in the catalogs he gives to the importers, for the purpose of avoiding any trouble of breach of an agreement for nonconforming goods. Quantity In indicating length, weight, volume and so on, the metric system should be used unless the sale is between countries which use another system. For goods whose quantity could easily decrease during transportation, the biggest issue will be where and when to establish the quantity as a basis of payment and so on. The buyer wants the quantity to be determined upon receipt of the goods at his warehouse, while the seller wants to establish the quantity at the time of shipment at his plant. This issue can be solved only in connection with the closely related issues of risk of loss and insurance. Quality An order specifying goods as per sample is apt to lead to trouble, because often it is not made clear that a sample is first requested as a basis for future orders, and because it is not always clear just how much deviation from the sample will be tolerated. It is therefore recommended that the quality of goods be specified by specifications or detailed description of samples and that these specifications or descriptions be made a part of the agreement. Price The contract price will be closely related to the conditions of delivery, such as FOB, CFR, or CIF. One of these delivery terms will be chosen after consideration of the economic and political factors involved. The problem here is that these terms are not always understood to mean the same thing. For example, in common practice, delivery is deemed completed, and title to the product and the risk of loss pass to the importer, upon shipment. This definition of delivery is called FOB. However, the definition of FOB under Incoterms differs from the definition used in the USA. Therefore, to avoid the problems arising from the different possible meanings of these terms, it is highly recommended that each of these terms, whenever used in an agreement, be defined in it. A drastic change in the foreign exchange rate could absorb all the profit expected from a transaction or could even cause a deficit. Both parties, therefore, may wish to establish their right to request a price change or to cancel the agreement in such a case. An importer can avoid this risk of foreign exchange rate by insisting on a price in his own country. Destination In the event that the destination port is too crowded , and the exporters ship must wait for many days to enter the port, transportation expense will necessarily be increased. These will be borne by either the exporter or the importer depending upon the agreements made between the two. Even in CIF or CFR contracts, it is possible to provide that the importer will bear any additional port charge. If a port cannot be safely used because of war, the doctrine of force majeure usually excuses a ship from delivering products at the port. In such a case, the exporter should be allowed to deliver the goods at the nearest port possible, especially when the disabling disturbances continue for some time. In general, it is wise for the exporter to set forth in his contract a list of several ports at which the goods may be delivered. Insurance The exporter will want insurance to be taken out to cover war risks, strikes, riots, civil commotion, spontaneous combustion, and other risks of this type which are usually exempted from insurance. The exporter will want this coverage to be at the importers expense, by means of including the insurance premiums in CIF or CFR prices. Both parties should keep in mind that taking out of insurance will be closely related to the contract clause that allocates the risk of loss. A conlract should make clear when and where the risk of loss or damage passes from the exporter to the importer. The exporter then need not worry about loss or damage after the risk has passed to the importer; and the importer need not worry about insurance covering damages that occur before the risk passes to him. Customs duty There will be no dispute over the common practice that customs duties are to be paid by the importer. However, the importer will argue that the exporter must pay any additional duties imposed as a result of the exporters errors as to quantity or price indication, and that the exporter should pay any additional expense due to the exporters mistake or mishandling. The exporter will have to accept such an argument by the importer if the importer has provided clear instructions with regard to labeling, documentation, or other specifications affecting customs procedures with which the exporter has not complied. Questions for reading :

问答题在获得某天体的必要的信息之前，我们是不会向该天体发射载人宇宙飞船的。

问答题Explain the following terms:

问答题Still, a white skin is always fairly conspicuous.

问答题打铁还需自身硬

问答题{{B}}Outline:{{/B}} A. Great convenience brought by the computer and Internet and problems with their popularization; B. Obstacles to be overcome; C. My suggestions on how to promote their popularization.

问答题Artificial intelligence and virtual reality are two computer-related technologies that may cast a large shadow on education. Much of school planning may be done not by human agents but by programs created by human agents; and much of what was once accomplished by textbooks and occasional field trips will now be performed in virtual reality. One can ask:what is the true value of materials prepared entirely by non-human entities? In a turnabout from previous trends, the acquisition of credentials may become less important. Individuals will be able to educate themselves (largely if not wholly) and to exhibit their mastery in a simulated setting. Why pay $120,000 to go to law school, if one can "read law" as in earlier times and then demonstrate one"s legal skills via computer simulation? Or learn to fly a plane by similar means, for that matter? Technology has revolutionized the world in which schools operate. Now it"s time for education to catch up to change.

问答题The only solid pieces of scientific truth about which I feel totally confident is that we are profoundly ignorant about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It would have amazed the brightest minds of the 18th centu ry Enlightenment to be told by any of us how little we know and how bewildering seems the way ahead. It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intel lect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply made up stories to filI the gaps. Now that we have begun exploring in earnest, we are getting glimpses of how huge the questions are, and how far from being answered. It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots.

问答题Some comments on the following statement based on your own experience: There exists a close relationship between language and culture. In other words, a successful master of a given language has much to do with an understanding of that culture.

问答题商标法

问答题multistage rocket