单选题Data are transferred between main memory and the disk surface by ______ at a time. A．track B．cylinder C．sector D．word

单选题A: I'm dreadfully sorry, but I've burned a hole in the rug. B: ______

单选题______ of them knew anything about the plan because it was a closely-guarded secret.

单选题______ is permanently stored in the computer and provides a link between the hardware and other programs that run on the PC. A．Interface B．Operating system C．Internet D．Application software

单选题Man: Have you heard it? John has just been promoted again! Woman: He"s the boss"s blue-eyed boy at the present. Question: What does the woman mean?

单选题Most of parents fell embarrassed when their children graduate from high school because they can't ______.

单选题Oil is an important______material which can be processed into many different products.

单选题In the post Cold War world few articles have influenced how Western policymakers view the world more than Samuel Huntington's 1993 article, "The Clash of Civilizations. " Suggesting that the world was returning to a civilization dominated world where future conflicts would originate from clashes between " civilizations" , the theory has been broadly criticized for oversimplification, ignoring local conflicts and for incorrectly predicting what has happened in the decade since its publication. The claim made by many that September the 11th has vindicated Huntington is simply not supported by the evidence. Huntington's thesis outlines a future where the " great divisions among 9 humankind and the dominating source of conflict will be cultural. " He divides the world's cultures into seven current civilizations, Western, Latin American, Confucian, Japanese, Islamic, Hindu and Slavic-Orthodox. In addition he judged Africa only as a possible civilization depending on how far one viewed the development of an African consciousness had developed. These civilizations seem to be defined primarily by religion with a number of ad hoc exceptions. Huntington predicts conflict occurring between states from different civilizations for control of international institutions and for economic and military power. He views this mix of conflict as normal by asserting that nation-states are a new phenomenon in a world dominated for most of its history by conflicts between civilizations. This is a dubious statement as inter-civilizational conflict driven mainly by geo-political factors rather than cultural differences is an equally if not more persuasive way to view much of history. The theory at least differentiates between non-Western civilizations rather than grouping them together. He also explains how the West presents pro-Western policies as positive for the entire world and that the very idea of a universal culture is a Western idea. However, his escape from a Eurocentric bias is only temporary. He completely fails to account for local cultures even though one can argue they collectively comprise a separate civilization. The article also predicts future conflicts will be started by non-Western civilizations reacting to Western power and values ignoring the equally plausible situation where Western states use their military superiority to maintain their superior positions. The policy prescriptions he suggests to counter this perceived threat equate to increasing the power of the West to forestall any loss of the West's pre-eminence. Thus he suggests the Latin American and Orthodox-Slavic civilizations be drawn further into the Western orbit and the maintenance of Western military superiority.

单选题This is a ______. A. job advertising B. business advertising C. part time advertising D. television advertising

单选题An unidentified wit once said, "laugh, and the world laughs with you. Snore, and you sleep alone." Yet snoring is far from a laughing matter, as those unfortunates with good hearing, who are rightly subjected to the sounds of the snoring disorder, will testify. It has been estimated that one of eight Americans snores: this means that there are approximately 21 million people—women as well as men—who render an unpleasant sound when they are asleep. And assuming that each snorer disturbs the sleep of at least one other person, it necessarily follows that there are 21 million unhappy listeners. While a sleeping person breathes, either in or out, several structures in his nose and throat generate the snoring. The sounds, coming from the soft palate and other soft structures of the throat, are caused by vibratory responses to inflowing and outflowing air. When the soft tissues of the mouth and throat come close to the lining of the throat, the vibrations that occur are caused by the position of the tongue. In short, the noise made by snoring can be compared to the noise when breezes flutter a flag on a pole. The frequency of the vibrations depends on the size, density, and elasticity of the affected tissues and on the force of the air flow. Although it is usually the process of in haling or exhaling through the mouth that cause snoring, short snores come from the nose of an open-mouthed sleeper. In all fairness to snorers, however, it should be emphasized that snoring is an involuntary out which stops as the offender is awakened.

单选题Even when textbooks are ______ through a school system, methods of teaching may vary greatly.(2011年四川大学考博试题)

单选题In 18th century, sending kidnapped African people to certain death was not considered a crime because they were "goods" , to do with as the owner______.

单选题 There are great careers in which the increasing emphasis is on specialization. You find these careers in engineering, in production, in statistical work, and in teaching. But there is an increasing demand for people who are able to take in a great area at a glance, people who perhaps know too much about any one field. There is, in other words, a demand for people Who are capable of seeing the forest rather than the trees, of making general judgments. And these "generalists" are particularly needed for positions in administration, where it is their job to see that other people do the work, where they have to plan for other people, to organize other people' s work, to begin it and judge it. The specialist understands one field; his concern is with technique and tools. He is a "trained" man; and his educational background is properly technical or professional. The generalist-and especially the administrator-deals with people; his concern is with leadership, with planning, and with direction giving. He is an "educated" man; and the humanities are his strongest foundation. Very rarely is a specialist capable of being an administrator. And very rarely is a good generalist also a good specialist in a particular field. Any organizations need them in different proportions. It is your task to find out, during your training period, into which of the two kinds of jobs you fit, and to plan your career accordingly. Your first job may turn out to be the right job for you-but this is a pure accident. Certainly you should not change jobs constantly or people will become suspicious of your ability to hold any job. At the same time you must not look upon the first job as the final job; it is primarily a training job, an opportunity to understand yourself and your fitness for being an employee.

单选题The history of modern pollution problems shows that most have resulted from negligence and ignorance. We have an appalling tendency to interfere with nature before all of the possible consequences of our actions have been studied in depth. We produce and distribute radioactive substances, synthetic chemicals and many other potent compounds before fully comprehending their effects on living organisms. Our education is dangerously incomplete. It will be argued that the purpose of science is to move into unknown territory, to explore, and to discover. It can be said that similar risks have been taken before, and that these risks are necessary to technological progress. These arguments overlook an important element. In the past, risks taken in the name of scientific progress were restricted to a small place and brief period of time. The effects of the processes we now strive to master are neither localized nor brief. Air pollution covers vast urban areas. Ocean pollutants have been discovered in nearly every part of the world. Synthetic chemicals spread over huge stretches of forest and farmland may remain in the soil for decades and years to come. Radioactive pollutants will be found in the biosphere for generations. The size and persistence of these problems have grown with the expanding power of modern science. One might also argue that the hazards of modern pollutants are small compared with the dangers associated with other human activity. No estimate of the actual harm done by smog, fallout, or chemical residues can obscure the reality that the risks are being taken before being fully understood. The importance of these issues lies in the failure of science to predict and control human intervention into natural processes. The true measure of the danger is represented by the hazards we will encounter if we enter the new age of technology without first evaluating our responsibility to environment.

单选题He declined the invitation partly because he was busy and ______. A. for lack of money B. partly because his lack of money C. partly because he lacked money D. partly his lack of money

单选题You may rely on ______ everything will be ready by Monday. A. that B. what C. which D. it that

单选题W: Did you watch the 7 o'clock program on channel 2 yesterday evening? I was about to watch it when someone came to see me.M: Yeah! It reported some major breakthrough (突破) in cancer research. People over 40 would find the program worth watching.Q: What do we learn from the conversation about the TV program? A. It could help people of all ages to avoid cancer. B. It was mainly meant for cancer patients. C. It might appeal more to viewers over 40. D. It was frequently interrupted by commercials.

单选题"_________everyone' s here," she said," let' s begin to discuss the solution to the problems we have found."

单选题Teaching children to read well from the start is the most important task of elementary schools. But relying on educators to approach this task correctly can be a great mistake. Many schools continue to employ instructional methods that have been proven ineffective. The staying power of the "look-say" or "whole-word" method of teaching beginning reading is perhaps the most flagrant example of this failure to instruct effectively. The whole-word approach to reading stresses the meaning of words over the meaning of letters, thinking over decoding, developing a sight vocabulary of familiar words over developing the ability to unlock the pronunciation of unfamiliar words. It fits in with the serf-directed, "learning how to learn" activities recommended by advocates of "open" classrooms and with the concept that children have to be developmentally ready to begin reading. Before 1963, no major publisher put out anything but these "Run- Spot-Run" readers. However, in 1955, Rudolf Flesch touched off what has been called "the great debate" in beginning reading. In his best-seller Why Johnny Can't Read, Flesch indicted(控诉)the nation's public schools for miseducating students by using the look-say method. He said-and mere scholarly studies by Jeane Chall and Rovert Dykstra later confirmed-that another approach to beginning reading, founded on phonics(声学), is far superior. Systematic phonics first teaches children to associate letters and letter combinations with sounds; it then teaches them how to blend these sounds together to make words. Rather than building up a relatively limited vocabulary of memorized words, it imparts a code by which the pronunciations of the vast majority of the most common words in the English language can be learned. Phonics does not devalue the importance of thinking about the meaning of words and sentences; it simply recognizes that decoding is the logical and necessary first step.