学科分类

已选分类 文学外国语言文学
问答题eurozone
进入题库练习
问答题
进入题库练习
问答题Directions:Writeanessayof150wordsbasedonthefollowingdrawing.Inyouressay,youshould1)describethedrawingbriefly,2)explainitsintendedmeaning,andthen3)supportyourviewwithanexample/examples.
进入题库练习
问答题 Wiping away doubts that Dolly the sheep clone was a fluke, University of Hawaii researchers announced they've been cloning mice for months, creating a flock of more than 50 duplicate rodents along the way. 71. {{U}}The success of the Hawaii group transforms adult cloning from a scientific novelty to a well-defined procedure likely to be .reproduced in labs around the world. The mass production of carbon copy mice, in turn, now allows researchers to test variations of the cloning techniques to see what works best.{{/U}} Cloning the genetically engineered mice used in medical studies should also be cheaper than current breeding methods. The Hawaii researchers use essentially the same recipe used to make Dolly: Take an egg. Scoop out the nucleus, which contains the DNA genetic information, and discard. Take a cell of the animal you wish to clone and insert its DNA into the egg. Add chemicals to tell the egg to start developing into an embryo. Incubate the embryo in a test tube for a few days, and then implant it into a foster mother. Wait for the foster mother to give birth to the clone. 72. {{U}}Where they modified the recipe was the method for moving the DNA from the animal-to-be-cloned into the egg. Most researchers had thought that mice would be particularly difficult to clone, because the DNA in mice embryos switches on very early, possibly as soon as the egg splits into the two-cell stage{{/U}}. Because adult cells have specific, specialized functions, most of the unused DNA has been turned off. Scientists had thought that the implanted DNA would not have enough time to "repro- gram" itself back to the embryonic, unspecialized state. Thus, most cloning research has focused on animals where the DNA switches on later, allowing more time for the reprogramming. 73. {{U}}In cows, for example, the DNA switch-on occurs when the embryo reaches the eight-cell stage. No one is sure how the ttawaii group got the mouse DNA to reprogram itself more quickly, but some have the suspicion that getting rid of the outer part of the adult cell speeds the process.{{/U}} In addition to various genetic tests, the researchers used a simple color scheme to verify that the DNA of the babies was not contaminated by either the egg donor or the foster mother. The eggs came from black mice, while the foster mothers were all white mice. The baby mice all came out coffee-colored, the color of their identical DNA mother. The researchers have licensed their technology to venture capital company ProBio America Inc. , based in Honolulu. "This technique we are expanding into the large commercial animals, such as cows and sheep, where much of our business is intended to be," says ProBio's Cameron Reynolds.
进入题库练习
问答题
进入题库练习
问答题In the tradition of the company, this dictionary provides especially good coverage and treatment of Americanism—that is, words and idioms that have originated in this country. In general, the vocabulary treatment is first-rate. The definitions tend to be up-to-date, clearly and precisely written, sufficiently detailed and admirably current. The fullness of the content is without parallel among college dictionaries. Readers will be struck by the entirely new presentation of the English language as it is written and spoken today. This is a masterpiece of precise defining with the advantage of quotations from well-known writers to demonstrate word usage and to make the book more authoritative.
进入题库练习
问答题This part is to test your practical writing ability. Now you are required to write a letter according to the information given in Chinese. Your writing should contain 100 to 120 words and you should write it on the Answer Sheet. 你叫李明,去年考上了大学,而你的同桌张强却落榜了。经过一年的复习,他今年也考上了大学。你得知此信息后,十分高兴,给他写了一封祝贺信。信中谈到了你们三年高中学习中一些难忘的事情以及你们之间的友谊,还可以向他简单谈谈你的大学生活感受,并且给他一些忠告,以应付即将开始的大学生活。 温馨提示:你只需根据上述提示写一封贺信,不可以直接将上面这段文字翻译成英语。不可以署你的真实姓名。
进入题库练习
问答题You Should write about 100 words on ANSWERR SHEET 2. Do not sign your own name at the end of the letter. Use "Wang Ling" instead. (10 points)
进入题库练习
问答题What happens to the vowels in such words as pen, hand, fine, and pond? Explain briefly the processes of sound change they have gone through.(20 points)
进入题库练习
问答题随着经济的发展和物质生活的丰富,广告在日常生活中变得越来越重要了。广告提供产品的最新信息。没有广告,消费者就不能尽快地了解附近的商店里都有什么新商品。广告有助于市场的发展,因为货卖得越多,价格就越便宜。广告还为报纸、杂志、广播电台和电视台等单位带来经济效益。
进入题库练习
问答题Minimal pairs(北航2008研;北二外2006研)
进入题库练习
问答题Phonetics and phonology
进入题库练习
问答题Directions: You are a senior student and are going to graduate next year. Write a letter to the Graduate School of a university expressing your will to purchase Master degree there. Please introduce yourself and inquire about information you think necessary. Write your letter with no less than 100 words. Write it neatly on ANSWER SHEET 2. Do not sign your own name at the end of the letter; use "Li Ming" instead. You do not need to write the address. (10 points)
进入题库练习
问答题In order to think about the possibility of a science of virtues, we must, of course, reflect on what we mean by virtue. In the simplest sense, virtues are dispositions to act in certain morally good ways. (1) Thus, a courageous person is disposed to face danger without fleeing, and we would be hesitant to characterize someone who runs away from danger as courageous. Yet, strangely enough, a person characterized by courage might in some circumstances flee from danger without causing us to doubt that he possessed the virtue. And, on the other hand, a person who lacked the virtue of courage might on occasion face danger without fleeing, (2) Sometimes, therefore, we will discover no perfect fit between virtuous character and a disposition to act in specific ways. A little better characterization of virtues is to think of them as something like skills that we acquire through habituation. The pitcher (棒球抽手) who throws a low strike over the outside corner of the plate may just be lucky. If, however, he can do it time after time—habitually—he has acquired a skill. Virtues are something like that, though also a bit different. (3) They are not simply skills that, like technical competence, enable us to carry out a particular task with proficiency; rather, they are skills that fit us for life generally. Acquiring virtues is more like learning to drive a car than it is like merely being able to parallel park. Driving requires a capacity to respond in fitting ways to countless circumstances that arise along the way, not just the ability to carry out a single maneuver. This account of virtues as something like skills more closely approximates a reasonable description of what we mean by virtue, but even habituation cannot be the complete story. It is hard for a pitcher to become skilled, because throwing that low, outside strike is inherently difficult, no matter how badly he wants to throw it. (4) In virtuous action, however, much of the difficulty may come precisely from what we want, from our own contrary inclinations. If I deliberately throw a pitch outside the strike zone, that does not mean I lack the capacity to throw a strike. But if I deliberately cheat the opposing team, I seem to lack a certain virtue. (5) Thus, virtues are not only habitual; they also engage the will in a way that skills do not.
进入题库练习
问答题肖伯纳在他一个剧本的前言中提出了一个观点。
进入题库练习
问答题{{B}}Directions:{{/B}} Read the following passage carefully and then translate each underlined part into Chinese. 71.{{U}}Vacations were once the prerogative of the privileged few, even as late as the 19th century. Now they are considered the right of all, except for such unfotrunate masses as, for example, the bulk of puplation in certain countries, for whom life, save for sleep and brief periods of rest, is uniterrupted toil{{/U}}. Vacations are more necessary now than before because today the average life is less well-rounded and has become increasingly compartmentalized. 72. {{U}}I suppose the idea of vacations, as we conceive it, must be incomprehensible to primitive peoples. Rest of some kind has of course always been a part of the rhythm of human life, but earlier ages did not find it necessary to organize it in the way that modern man has done. Holidays and feast days were sufficient{{/U}}. With modern man's increasing tensions, with the stultifying quality of so much of his work, this break in the year's routine became steadily more necessary. 73. {{U}}Vacations became mandatory for the purpose of renewal and repair. And so it came about that in the United States, the most self-indulgent of nations, the most tense and compartmentalized, vacations have come to take a predominant place in domestic conversation{{/U}}.
进入题库练习
问答题手机短信
进入题库练习
问答题In the later summer of that year we lived in a house in a village that looked across the river and the plain to the mountains. In the bed of the river there were pebbles and boulders, dry and white in the sun, and the water was clear and swiftly moving and blue in the channels. Troops went by the house and down the road and the dust they raised powdered the leaves of the trees. The trunks of the trees too were dusty and the leaves fell early that year and we saw the troops marching along the road and the dust rising and leaves, stirred by the breeze, falling and the soldiers marching and afterward the road bare and white except for the leaves.…Poor, poor dear Cat. And this was the price you paid for sleeping together. This was the end of the trap. This was what people got for loving each other. Thank God for gas, anyway. What must it have been like before there were anesthetics? Once it started, they were in the mill-race. Catherine had a good time in the time of pregnancy. It wasn" t bad. She was hardly ever sick. She was not awfully uncomfortable until toward the last. So now they got her in the end. You never got away with anything, Get away hell! It would have been the same if we had been married fifty times. And what if she should die? She won" t die. People don" t die in childbirth nowadays. That was what all husbands thought. Yes, but what if she should die? She won"t die. She" s just having a bad time. Afterward we" d say what a bad time and Catherine would say it wasn" t really so bad. But what if she should die.
进入题库练习
问答题
进入题库练习
问答题 Directions: A recruitment drive for 100,000 Olympic volunteers, which aims to help the Chinese and foreigners get involved in the 2008 Games, was Officially launched in Beijing last month. You intend to apply for certain positions, and now write a letter the recruitment office, showing your motivation and stating your eligibility for the requirements. Write your letter in no less than 100 words. Write it neatly on ANSWER SHEET 2. Do not sign your own name at the end of the letter, use "Li Ming" instead. Do not write the address.
进入题库练习