单选题The teacher wrote a brief comment in the ______ to show the student why it was wrong. A.manual B.margin C.edge D.verge

单选题Not until Kentucky's Mammoth Cave had been completely explored in 1972______.

单选题The El Nino ("little boy" in Spanish) that pounded the globe between the summers of 1997 and 1998 was in some measure the most destructive in this century. Worldwide damage estimates exceed ￡ 20 billion--not to mention the human death toll caused by resulting droughts, floods and bushfires. El Nino and La Nina ( "little girl" ) are part of a seesawing of winds and currents in the equatorial Pacific called ENSO ( El Nino Southern Oscillation) that appears every two to eight years. Normally, westward-blowing trade winds caused by the rotation of the earth and conditions in the Tropics push surface water across the Pacific towards Asia. The warm water piles up along the coasts of Indonesia, Australia and the Philippines, raising sea levels more than a foot above those on the South American side of the Pacific. As El Nino builds the normal east-to-west trade winds wane. Like water splashing in a giant bathtub, the elevated pool of warm water washes from Asian shores back towards South America. In last season' s cycle, surface temperatures off the west coast of South America soared from a normal high of 23℃ degrees to 28℃ degrees. This area of warm water, twice the size of the continental US, interacted with the atmosphere, creating storms and displacing high-altitude winds. El Nino brought rain that flooded normally dry coastal areas of Ecuador, Chile and Peru, while droughts struck Australia and Indonesia. Fires destroyed some five million acres of Indonesian for est. The drought, along with the economic crisis, left about five million people desperate for food and water. These conditions helped set the stage for riots that led to the downfall of President Suharto. El Nino also took the blame for extreme temperatures in Texas last summer--over 38℃ degrees for a record 30 days in a row. In Florida, lush vegetation turned to tinder and bushfires raged. Even Britain has been sweltering with our hottest year on record in 1997.

单选题The______ of electrical energy into thermal energy is a process that is easily carried out at 100% efficiency.(2006年中国矿业大学考博试题)

单选题By saying "Manufacturing industries and most agricultural enterprises are more distant from the censurers" ( par

单选题Many people who have not visited Britain call all the inhabitants English, for they are used to thinking of the British Isles as England. (71) , the British Isles contain a variety of peoples, and only the people of England call themselves English. The others (72) to themselves as Welsh, Scottish, or Irish, (73) the case may be; they are often slightly annoyed (74) being classified as "English". Even in England there are many (75) in regional character and speech. The chief (76) is between southern England and northern England. South of a (77) going from Bristol to London, people speak the type of English usually learnt by international students, (78) there are local variations. Further north, regional speech is usually " (79) " than that of southern Britain. Northerners are (80) to claim that they work harder than Southerners, and are more (81) . They are openhearted and hospitable; visitors often find that they make friends with them (82) . Northerners generally have hearty (83) : the visitor to Lancashire or Yorkshire, for instance, may look forward to receiving generous (84) at meal times. In accent and character the people of the Midlands (85) a gradual change from the southern to the northern type of Englishman. In Scotland the sound (86) by the letter "R" is generally a strong sound, and "R" is often pronounced in words in which it would be (87) in southern English. The Scots are said to be a serious, cautious, thrifty people, (88) inventive and somewhat mystical. All the Celtic peoples of Britain (the Welsh, the Irish, the Scots) are frequently (89) as being more "fiery" than the English. They are (90) a race that is quite distinct from the English.

单选题There are different______ of books in a library.(2007年中国矿业大学考博试题)

单选题Our boss is taking everyone to the ballet tonight, and I need to make sure my new dress ______ for the occasion.

单选题As far as rank is concerned, an associate professor is ______ to a professor, though they are almost equally knowledgeable. [A] attached [B] subsidiary [C] previous [D] inferior

单选题Other guests at yesterday's opening, which was broadcast alive by the radio station, included the princess and her husband. A. B. C. D.

单选题The general opinion is that he is ______ to complain.

单选题 Margherita is a London girl and arriving at Capital was like coming home. "I grew up listening to Capital Radio," she says. "People say, Wasn't it frightening, joining such well-known presenters? But everyone here is so down to earth. It would be off putting if the others had people doing their make-up, or star signs on their office doors. But there's none of that--Mick Brown, for instance, finishes his show and wanders off to get the bus home with everyone else." Margherita says that her own musical tastes varied. But she doesn't pick her own music for her shows. The Capital computer selects the records in advance from a list approved by the station managers. "The station has a certain sound, and if we all picked our own music, it wouldn't sound like Capital," she says. "But for someone who likes music, this is a dream job. I get to go to concerts and meet the bands you can hear on my show. It's great to hear the ' behind the scenes' gossip." Most people would expect that a presenter's most important qualities are a nice voice and huge amounts of confidence, but Margherita said that basic maths is handy as well. "You have to make sure that you've got an eye on everything that's going on in the studio, but you've got to be able to add and subtract and think in minutes and seconds." she says. "You're dealing with timed records, and with announcements and commercials that are also timed precisely, and you have to be ready to switch to the news at exactly the right second. If you're going over to a live event. You need to be ready, for that on time, not a second earlier or later," This isn't the sort of girl to let the rock'n-roll lifestyle go to her head. Even if she did her family would bring her down to earth. "When I started at Capital the only thing my brothers asked was whether they'd get free records," she remembers. "And my mum couldn't even find the station on her radio." Margherita Taylor is very nice and very easy-going, but very much in control. She is so much a "Capital Radio girl" that you might think she is just doing a good job for the station's publicity department, although you know what she's saying really comes from the heart. She smiles a lot, laughs a lot and is generally a great advert for Capital.

单选题The effect of the baby boom on the schools helped to make possible a shift in thinking about the role of public education in the 1950's. In the 1920's but especially (21) the Depression of the 1930's, the United States experienced a (22) birth rate. Then with the prosperity (23) .on by the Second World War and the economic boom that followed it, young people married and (24) households earlier and began to (25) larger families than had their (26) during the Depression. Birth rates rose to 102 per thousand in 1946, 106. 2 in 1950, and 118 in 1955 (27) economics was probably the most important (28) . it is not the only explanation for the baby boom. The increased value placed (29) the idea of the family also helps to (30) this rise in birth rates. The baby boomers began streaming (31) the first grade by the mid-1940's and became a (32) by 1950. The public school system suddenly found itself (33) . The wartime economy-meant that few new schools were built between 1940 and 1945. (34) large numbers of teachers left their profession during that period for better-paying jobs elsewhere. (35) , in the 1950's and 1960's, the baby boom hit an antiquated and inadequate school system. Consequently, the custodial rhetoric of the 1930's no longer made (36) : keeping youths ages sixteen and older out of the labor market by keeping them in school could no longer be a high (37) for an institution unable to find space and staff to teach younger children. With the baby boom, the focus of educators (38) turned toward the lower grades and back to basic academic skills and (39) . The system no longer had much (40) in offering nontraditional, new, and extra services to older youths.

单选题The minister's ______ answer led to an outcry from the Opposition.

单选题City officials are considering building a path to give the public ______ to the site.

单选题It was the worst tragedy in maritime (航海的) history, six times more deadly than the Titanic. When the German cruise ship Wilhelm Gustloff was hit by torpedoes (鱼雷) fired from a Russian submarine in the final winter of World War Ⅱ, more than 10,000 people—mostly women, children and old people fleeing the final Red Army push into Nazi Germany—were packed aboard. An ice storm had turned the decks into frozen sheets that sent hundreds of families sliding into the sea as the ship tilted and began to go down. Others desperately tried to put lifeboats down. Some who succeeded fought off those in the water who had the strength to try to claw their way aboard. Most people froze immediately. "I"ll never forget the screams," says Christa Ntitzmann, 87, one of the 1,200 survivors. She recalls watching the ship, brightly lit, slipping into its dark grave—and into seeming nothingness, rarely mentioned for more than half a century. Now Germanys Nobel Prize-winning author Gtinter Grass has revived the memory of the 9,000 dead, including more than 4,000 children—with his latest novel Crab Walk , published last month. The book, which will be out in English next year, doesn"t dwell on the sinking; its heroine is a pregnant young woman who survives the catastrophe only to say later: "Nobody wanted to hear about it, not here in the West (of Germany) and not at all in the East." The reason was obvious. As Grass put it in a recent interview with the weekly Die Woche: "Because the crimes we Germans are responsible for were and are so dominant, and we didn"t have the energy left to tell of our own sufferings." The long silence about the sinking of the Wilhelm Gustloff was probably unavoidable and necessary. By unreservedly owning up to their countries monstrous crimes in the Second World War, Germans have managed to win acceptance abroad, marginalize (使……不得势) the neo-Nazis at home and make peace with their neighbors. Today unified Germany is more prosperous and stable than at any time in its long, troubled history. For that, a half century of willful forgetting about painful memories like the German Titanic was perhaps a reasonable price to pay. But even the most politically correct Germans believe that they now earned the right to discuss the full historical record. Not to equate German suffering with that of its victims, but simply to acknowledge a terrible tragedy.

单选题As an industry, biotechnology stands to ______ electronics in dollar volume grid perhaps surpass it in social impact by 2020.