单选题You can't leave the city: all the roads are______by snow.

单选题In width of scope, Yeats far exceeds any of his contemporaries. He is the only poet since the 18th century who has been a public man in his own country and the only poet since Milton who has been a public man at a time when his country was involved in a struggle for political liberty. This may not seem an important matter, but it is a question whether the kind of life lived by poets for the last two hundred years or so has not been one great reason for the drift of poetry away from the life of the community as a whole, and the loss of touch with tradition. Once the life of contemplation has been divorced from the life of action, or from real knowledge of men of action, something is lost which it is difficult to define, but which leaves poetry enfeebled and incomplete. Yeats responded with all his heart as a young man to the reality and the romance of Ireland's struggle but he lived to be completely disillusioned about the value of the Irish rebellion. He saw his dreams of liberty blotted out in horror by "the innumerable clanging wings that have put out the moon". It brought him to the final conclusion of the futility of all discipline that is not of the wlaole being, and of "how base at moments of excitement are minds without culture". But he remained a man to whom the life of action always meant something very real.

单选题In Dr. Baum's opinion, a true nature reserve ______.

单选题Three 36 years ago Daniel Gabriel Fahrenheit made his 37 thermometer in his home town of Danzig (Now Gdansk in Poland). The thermometer was filled with 38 and completely sealed, but it was not much use without some sort of 39 to measure the temperature. One story 40 that, during the winter of 1708-09, Fahrenheit took a measurement of 0 degrees as the coldest temperature outdoors—which would now read as minus 17.8℃. Five years 41 he used mercury instead of alcohol for his 42 , and made a top reference point by measuring his own body temperature as 90 degrees. Soon afterwards he became a glassblower, 43 allowed him to make thinly blown glass tubes that could be marked up with more points on the scale and so 44 accuracy. Eventually he took the 45 point of his temperature scale from a reading made in ice, water and salt, and a top point made from the boiling point of water. The scale was recalibrated using 180 degrees between these 46 points and Fahrenheit was able to make much more accurate and more 47 measurements of temperature. But in 1742 a rival challenged the Fahrenheit scale and 48 superseded it. Anders Celsius, in Sweden, invented a scale of 100 degrees between the freezing and boiling points of water and gradually 49 over many countries. However, the British 50 wedded to Fahrenheit until well into the 20th century.

单选题Carbon monoxide, funned by the incomplete combustion of some carbonaceous material, has been a ______ to humans since the domestication of fire.

单选题In the United States, the first day nursery, was opened in 1854. Nurseries were established in various areas during the 1 half of the 19th century; most of 2 were charitable. Both in Europe and in the U.S., the day nursery movement received great 3 during the First World War, when 4 of manpower caused the industrial employment of unprecedented (前所未有) numbers of women. In some European countries nurseries were established 5 in munitions (军火) plants, under direct government sponsorship. 6 the number of nurseries in the U.S. also rose 7 , this rise was accomplished without government aid of any kind. During the years following the First World War, 8 , federal, State, and local governments gradually began to exercise a measure of control 9 the day nurseries, chiefly by 10 them. The 11 of the Second World War was quickly followed by an increase in the number of day nurseries in almost all countries, as women were 12 called up on to replace men in the factories. On this 13 the U.S. government immediately came to the support of the nursery schools, 14 $6,000,000 in July, 1942, for a nursery school program for the children of working mothers. Many States and local communities 15 this Federal aid. By the end of the war, in August, 1945, more than 100, 000 children were being cared 16 in daycare centers receiving Federal 17 . Soon afterward, the Federal government 18 cut down its expenditures for this purpose and later 19 them, causing a sharp drop in the number of nursery schools in operation. However, the expectation that most employed mothers would leave their 20 at the end of the war was only partly fulfilled.

单选题Anything that is dropped from a height falls towards the center of the earth because of the pull of______.

单选题Clam down and give us an______account of the whole accident.

单选题The visitors ______ the castle are asked not to take photographs.A. ofB. toC. inD. into

单选题If you intend using humor in your talk to make people smile, you must know how to identify shared experiences and problems. Your humor must be relevant to the audience and should help to show them that you are one of them or that you understand their situation and are in sympathy with their point of view. Depending on whom you are addressing, the problems will be different. If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses. Here is an example, which I heard at a nurses" convention, of a story which works well because the audience all shared the same view of doctors. A man arrives in heaven and is being shown around by St. Peter. He sees wonderful accommodations, beautiful gardens, sunny weather, and so on. Everyone is very peaceful, polite and friendly until, waiting in a line for lunch, the new arrival is suddenly pushed aside by a man in a white coat, who rushes to the head of the line, grabs his food and stomps over to a table himself. "Who is that?" The new arrival asked St. Peter. "Oh, that"s God," came the reply, "but sometimes he thinks he"s a doctor." If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it"ll be appropriate for you to make a passing remark about the inedible canteen food or the chairman"s notorious bad taste in ties. With other audiences you mustn"t attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman. You will be on safer ground if you stick to scapegoats like the Post Office or the telephone system. If you feel awkward being humorous, you must practice so that it becomes more natural. Include a few casual and apparently oK-the-cuff remarks which you can deliver in a relaxed and unforced manner. Often it"s the delivery which causes the audience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark. Look for the humor. It often comes from the unexpected. A twist on a familiar quote "If at first you don"t succeed, give up" or a play on words or on a situation. Search for exaggeration and understatements. Look at your talk and pick out a few words or sentences which you can turn about and inject with humor.

单选题Due to sluggish market conditions, the factory's workforce has ______ from over 4,000 to a few hundred. A. proclaimed B. dwindled C. repressed D. indulged

单选题[此试题无题干]

单选题Some 121 countries may be designated "developing", and of this 121, seventeen countries ______ more than four-fifths of energy consumption. A. amount to B. account for C. add up D. take away

单选题______ all our kindness to help her, Sara refused to listen.

单选题According to the first two paragraphs, if present trends continue, which one of the following situations will not occur?

单选题You wouldn't expect an Information Age company like Intel to get on the wrong side of environmentalists, but the company's recent 42 billion expansion at Rio Rancho, New Mexico, plunged the world's largest semiconductor maker into an age-old Western problem: water rights. Chip plants consume millions of gallons of water a day, mainly to wash microscopic dirt from the surface of chips. That's a problem in the dry West, where, as Twain remarked, whiskey is for drinking, water is for fighting about. During construction of the new 1.3 million-square-foot chip-making plant, which starts production this month, residents and activists complained that the company's expanding thirst would be too great a drain on local supplies. After weeks of public hearings, the state of New Mexico last year granted Intel 72% of the water it requested. The strife at Rio Rancho is the most intense the industry has faced. "I think it sensitized us, " says Howard High, spokesman for Intel. "We have a lot of efforts under way to try and minimize the amount of water we use. " Current conservation efforts may not work for an industry that in North America is expected to double in size to $ 75 billion in sales in the next three years. The trend is to reuse treated wastewater from chip cleaning in places such as cooling towers and air-conditioning systems. Motorola employs such methods in Phoenix and Austin. Recycling water for chip cleaning is the most logical approach. But the technology to make ultra-pure water for such a closed-loop system is still too costly. New technologies could eventually take the water out of chip cleaning. One company, Radiance Services, a six-person start-up based in Bethesda, Maryland, holds patents for a new "dry cleaning" method. Using laser light and inert gas (惰性气体) to lift impurities (杂质，不洁物) from surfaces of a chip, Radiance claims its process can clean as effectively as the current water-based methods.