单选题To succeed in a scientific research project, ______.

单选题[此试题无题干]

单选题 My little brother practices the speech repeatedly until his delivery and timing were perfect.

单选题The current emergency in Mexico City that has taken over our lives is nothing. I could ever have imagined for me or my children. We are living in an environmental crisis, an air-pollution emergency of unprecedented severity. What it really means is that just to breathe here is to play a dangerous game with your health. As parents, what terrorizes us most is reports that children are at higher risk because they breathe more times per minute. What more can we do to protect them and ourselves? Our pediatrician"s (儿科医师的) medical recommendation was simple: abandon the city permanently. We are foreigners and we are among the small minority that can afford to leave. We are here because of my husband"s work. We are fascinated by Mexico—its history and rich culture. We know that for us, this is a temporary danger. However, we cannot stand for much longer the fear we feel for our boys. We cannot stop them from breathing. But for millions, there is no choice. Their lives, their jobs, their futures depend on being here. Thousands of Mexicans arrive each day in this city, desperate for economic opportunities. Thousands more are born here each day. Entire families work in the streets and practically live there. It is a familiar sight: as parents hawk goods at stoplights, their children play in the grassy highway dividers, breathing exhaust fumes. I feel guilty complaining about my personal situation. We won"t be here long enough for our children to form the impression that skies are colored only gray. And yet the government cannot do what it must to end this problem. For any country, especially a developing Third World economy like Mexico, the idea of barring from the capital city enough cars, closing enough factories and spending the necessary billions on public transportation is simply not an option. So when things get bad, as in the current emergency, Mexico takes half measures—prohibiting some more cars from circulating, stopping some factories from producing—that even its own officials concede aren"t adequate. The word "emergency" implies the unusual. But when daily life itself is an emergency, the concept loses its meaning. It is human nature to try to adapt to that which we cannot change. Or to mislead ourselves into believing we can adapt.

单选题The family looked on ______ as their house bummed down.

单选题4 The history of responses to the work of the artist Sandro Botticelli (1444—1510) sug gests that widespread appreciation by critics is a relatively recent phenomenon. Writing in 1550, Vasari expressed an unease with Botticelli's work, admitting that the artist fitted awkwardly into his evolutionary scheme of the history of art. Over the next two centuries, academic art historians defamed Botticelli in favor of his fellow Florentine, Michelange lo. Even when anti-academic art historians of the early nineteenth century rejected many of the standards of evaluation adopted by their predecessors, Botticelli's work remained out side of accepted taste, pleasing neither amateur observers nor connoisseurs. (Many of his best paintings, however, remained hidden away in obscure churches and private homes. ) The primary reason for Botticelli's unpopularity is not difficult to understand, most observers, up until the mid-nineteenth century, did not consider him to be noteworthy, because his work, for the most part, did not seem to these observers to exhibit the tradi tional characteristics of fifteenth-century Florentine art. For example, Botticelli rarely em ployed the technique of strict perspective and, unlike Michelangelo, never used chiaroscuro. Another reason for BotticeiIi's unpopularity may have been that his attitude toward the style of classical art was very different from that of his contemporaries. Although he was thoroughly exposed to classical art, he showed little interest in borrowing from the classi cal style. Indeed, it is paradoxical that a painter of large-scale classical subjects adopted a style that was only slightly similar to that of classical art. In any case, when viewers began to examine more closely the relationship of Botticelli's work to the tradition of fifteenth-century Florentine art, his reputation began to grow. Analyses and assessments of Botticelli made between 1850 and 1870 by the artists of the Pre-Raphaelite movement, as well as by the writer Pater (although he, unfortu nately, based his assessment on an incorrect analysis of Botticelli's personality), inspired a new appreciation of Botticelli throughout the English-speaking world. Yet Botticelli's work, especially the Sistine frescoes, did not generate worldwide attention until it was fi nally subjected to a comprehensive and scrupulous analysis by Home in 1908. Home rightly demonstrated that the frescoes shared important features with paintings by other fifteenth century Florentines—features such as skillful representation of anatomical proportions, and of the human figure in motion. However, Home argued that Botticelli did not treat these qualities as ends in themselves—rather, that he emphasized clear depletion of a sto ry, a unique achievement and one that made the traditional Florentine qualities less cen- tral. Because of Home's emphasis crucial to any study of art, the twentieth century has come to appreciate Botticelli's achievements.

单选题The instructions on how to use the new machine ______ that nobody seemed to be able to understand. A. were very simplistic B. was very confused C. were so confusing D. was so simplistic

单选题It is not (surprised) that Mr. Smith got no help when he (fell ill). He wasn't (on) good terms with anyone in the (neighbourhood).

单选题The pronoun "They" (Line 1, Par

单选题The young man who saw the car ______ into the river telephoned the police.

单选题William, Duke of Normandy, conquered England in 1066. One of the first tasks he undertook as king was the building of a fortress in the city of London. Begun in 1066 and completed several years later by William's son, William Rufus, this structure was called the White Tower. The Tower of London is not just one building, but an 18-acre complex of buildings. In addition to White Tower there are 19 other towers. The Thames River flows by one side of the complex and a large moat, or shallow ditch, surrounds it. Once filled with water, the moat was drained in 1843 and is now covered with grass. The Tower of London is the city's most popular tourist attraction. A great deal of fascinating history has taken place within its walls. The tower has served as a fortress, royal residence, prison, royal mint, public records office, observatory, military barracks, place of execution, and city zoo. As recently as 1941, the tower was used as a prison for Adolf Hitler's associate Rudolf Hess. Although it is no longer used as a prison, the tower still houses the crown jewels and a great deal of English history.

单选题He has little trouble ______ the tires of his car. A. to fix B. fix C. fixing D. with fixing

单选题These examples show that openness and the ability to change brings couples a giant step closer to the marital harmony they ______ .

单选题She didn't openly attack the plan, but her opposition was______ in her failure to say anything in support of it.(2007年中国矿业大学考博试题)

单选题Before high school teacher Kimberly Rugh got down to business at the start of a recent school week, she joked with her students about how she"d had to clean cake out of the comers of her house after her 2-year-old son"s birthday party. This friendly combination of chitchat took place not in front of a blackboard but in an Email message that Rugh sent to the 135 students she"s teaching at the Florida Virtual School, one of the nation"s leading online high schools. The school"s motto is "any time, any place, any path, any pace". Florida"s E-school attracts many students who need flexible scheduling, from young tennis stars and young musicians to brothers Tobias and Tyler Heeb, who take turns working on the computer while helping out with their family"s clam-farming business on Pine Island, off Florida"s southwest coast. Home-schoolers also are well represented. Most students live in Florida, but 55 hail from West Virginia, where a severe teacher shortage makes it hard for many students to take advanced classes. Seven kids from Texas and four from Shanghai round out the student body. The great majority of Florida Virtual Schoolers--80 percent are enrolled in regular Florida public or private high schools. Some are busy overachievers. Others are retaking classes they barely passed the first time. The school"s biggest challenge is making sure that students aren"t left to sink or swim on their own. After the school experienced a disappointing course completion rate of just 40 percent in its early years, Executive Director Julie Young made a priority out of what she calls "relationship-building", asking teachers to stay in frequent E-mail and phone contact with their students. That personal touch has helped: The completion rate is now 80 percent. Critics of online classes say that while they may have a limited place, they are a poor substitute for the face-to-face contact and socialization that take place in brick-and-mortar classrooms. Despite opportunities for online chats, some virtual students say they"d prefer to have more interaction with their peers. Students and parents are quick to acknowledge that virtual schooling isn"t for everyone. "If your child"s not focused and motivated, I can only imagine it would be a nightmare," says Patricia Haygood of Orlando, whose two daughters are thriving at the Florida school. For those who have what it takes, however, virtual learning fills an important niche. "I can work at my own pace, on my own time," says Hackney. "It"s the ultimate in student responsibility."

单选题I don"t suppose you"re leaving this evening, ______?

单选题In the United States, the first day nursery was opened in 1854. Nurseries were established in various areas during the【C1】______half of the 19th century; most of【C2】______were charitable. Both in Europe and in the U. S. , the day-nursery movement received great【C3】______during the First World War, when【C4】______of manpower caused the industrial employment of unprecedented numbers of women. In some European countries, nurseries were established【C5】______in munitions plants, under direct government sponsorship【C6】______the number of nurseries in the U. S. , also rose【C7】______. this rise was accomplished without government aid of any kind. During the years following the First World War,【C8】______Federal State and local governments gradually began to exercise a measure of control【C9】______the day nurseries, chiefly by【C10】______them and by inspecting and regulating the conditions within the nurseries.

单选题Educational development is {{U}}bound up with{{/U}} economic progress.