单选题Is this happening in your neighborhood? Children, notebook computers stuck under their arms, await the yellow bus for the trip to middle school. On the surface, the question of computers in schools is a no-brainer. It would be strange to insist that today's technology shouldn't be used to make the classroom experience more individualized, more effective, more immediate, more exciting. Computers have been in schools more than 20 years — and probably even done some good. But the idea of a personal computer as a necessary daily tool for every American grammar school pupil is altogether different thing. Beware the superficially attractive vision of 10-year-olds doing most of their work — and homework — on a computer. It's another illusory silver bullet that promises to solve all of society's ills through technology. Regardless of whether parents or taxpayers buy the machinery, it's a bad policy. Determining the proper role of computers in schools is too important to be left to computer suppliers and educators. An educated public with clear and realistic expectations needs to help determine the right track for technology. Educators forever seem to seek the ultimate in curricular or teaching tools. They are always preoccupied with innovation — junior high school, new math, whole language, open classrooms and mastery learning, to name a few. Some ideas turned out well and over time have earned permanent positions in our education systems. Other reflected change for changes' sake and wound up in the trash bin, where they belong. Exactly what is to be solved with computers in schools? Are we looking to improve instructional capacity and flexibility? Are we trying to make teachers and aides more productive by letting students take advantage of programmed learning tools? This all sounds good, and much has been accomplished with computer-assisted instruction. But that's not the same as making the computer a symbol of well-tempered educational policy. There's danger in the message that a child is not fully educated if he or she can't surf the World Wide Web skillfully, move around in Windows or the Founder, use a word processing program, or program in Logo or Basic. These skills can be learned outside the classroom. Worse, the time it takes students to acquire them is time stolen from the legitimate teaching schedule — and that's a bad trade. And what kind of computers should be purchased? We're not talking brand names. Most school systems don't have the money to replace PCs or Macs on the two-to-three-year cycle that shifts technologies demand. On the other hand, $2, 500 — the cost of just one computer — invested in books for the school library produces an asset that has, shall we say, a longer shelf life. And who changes the factory culture of schoolrooms to allow computers to be more effective? And who teaches the teachers? These are the really tough issues — the ones that more hardware won't solve. Children are best served when schools contribute to shaping the solid foundations on which their future will be built. The student who can read with curiosity and understanding, who has mastered basic mathematical concepts, who can evaluate ideas critically, is the one schools should aim to produce.

单选题It can be inferred from the passage that the decision to study an organism may sometimes be influenced by______.

单选题Fried foods have long been frowned upon. Nevertheless, the skillet is about our handiest and most useful piece of kitchen equipment. Stalwart lumberjacks and others engaged in active labor requiring 4,000 calories per day or more will take approximately one-third of their rations prepared in this fashion. Meat, eggs, and French toast cooked in this way are served in millions of homes daily. Apparently the consumers are not beset with more signs of indigestion than afflict those who insist upon broiling, roasting, or boiling. Some years ago one of our most eminent physiologists investigated the digestibility of fried potatoes. He found that the pan variety was more easily broken down for assimilation than when deep fat was employed. The letter, however, dissolved within the alimentary tract more readily than the boiled type. Furthermore, he learned, by watching the progress of the contents of stomach by means of the fluoroscope, that fat actually accelerated the rate of digestion. Now all this is quite in contrast with "authority". Volumes have been written on nutrition, and everywhere the dictum has been accepted—no fried edibles of any sort for children. A few will go so far as to forbid this style of cooking wholly. Now and then an expert will be bold enough to admit that he uses them himself, the absence of discomfort being explained on the ground that he possesses a powerful gastric apparatus. We can of course sizzle perfectly good articles to death so that they will be leathery and tough. But thorough heating, in the presence of shortening, is not the awful crime that it has been labeled. Such dishes stimulate rather than retard contractions of the gall bladder. Thus it is that bile mixes with the nutriment shortly after it leaves the stomach. We don"t need to allow our foodstuffs to become oil soaked, but other than that, there seems to be no basis for the widely heralded prohibition against this method. But notions become fixed. The first condemnation probably arose because an "oracle" suffered from dyspepsia which he ascribed to some fried item on the menu. The theory spread. Others agreed with him, and after a time the doctrine became incorporated in our textbooks. The belief is now tradition rather than proved fact. It should have been refuted long since, as experience has demonstrated its falsity.

单选题We are governed by the hormones that______ around our bodies.

单选题The various ingredients of the Postgraduate Education Programme, together with the general tone of an active department, help ensure high completion rates.

单选题The preserved food should retain palatable appearance, flavor, and texture, as well as its original nutritional value. A. tasty B. stylish C. delicate D. notable

单选题The greatest celestial observatory of Neolithic times, stonehenge, is (a work) of (such) (Magnitude as it) absorbed the energies of (prehistoric Britons) for three hundred years.

单选题______are not allowed to play in most professional golf tournaments.

单选题He said he was an insurance salesman, but later on she discovered he was a(n) ______.

单选题He has got too much ______to worry about your problem. A. on his mind B. out of mind C. off his mind D. to his mind

单选题Iceland lies far north in the Athlantic, with its northernmost tip actually ______ the Arctic Circle.

单选题The threat of a general strike was ______ only by prompt government action.

单选题An important point in the development of a governmental agency is the codification of its controlling practices. The study of law or jurisprudence is usually concerned with the codes and practices of specific governments, past or present. It is also concerned with certain questions upon which a functional analysis of behavior has some bearing. What is a law? What role does a law play in governmental control? In particular, what effect does it have upon the behavior of the controller and of the members of the governmental agency itself? A law usually has two important features. In the first place, it specifies behavior. The behavior is usually not described topographically but rather in terms of its effect upon others——the effect that is the object of governmental control. When we are told, for example, that an individual has "committed perjury," we are not told what he has actually said. "Robbery" and "assault" do not refer to specific forms of response. 0nly properties of behavior which are aversive to others are mentioned——in perjury the lack of a customary correspondence between a verbal response and certain factual circumstances, in robbery the removal of positive reinforces, and in assault the aversive character of physical injury. In the second place, a law specifies or implies a consequence, usually punishment. A law is thus a statement of a contingency of reinforcement maintained by a governmental agency. The contingency may have prevailed as a controlling practice prior to its codification as a law, or it may represent a new practice which goes into effect with the passage of the law. Laws are thus both descriptions of past practices and assurances of similar practices in the future. A law is a role of conduct in the sense that it specifies the consequences of certain actions which in turn "rule" behavior. The effect of a law upon the controlling agency. The government of a large group requires an elaborate organization, the practices of which may be made more consistent and effective by codification. How codes of law affect governmental agents is the principal subject of jurisprudence. The behavioral processes are complex, although presumably not novel. In order to maintain or "enforce" contingencies of governmental control, an agency must establish the fact that an individual has behaved illegally and must interpret a code to determine the punishment. It must then carry out the punishment. These labors are usually divided among special subdivisions of the agency. The advantages gained when the individual is "not under man but under law" have usually been obvious, and the great codifiers of law occupy places of honor in the history of civilization. Codification does not, however, change the essential nature of governmental action nor remedy all its defects.

单选题This passage deals mainly with ______.

单选题We were discussing the housing problem when a middle-aged man {{U}}cut in{{/U}} and said, "There's no point in talking about impossibilities."

单选题He acknowledged that the ______ of financial support in the election took long hours of persuasion. A. gestation B. enlistment C. establishment D. temperance

单选题We have known for a long time that the organization of any particular society is influenced by the definition of the sexes and the distinction drawn between them. But we have realized only recently that the identity of each sex is not so easy to pin down, and that definitions evolve in accordance with different types of culture known to us, that is, scientific discoveries and ideological revolutions. Our nature is not considered as immutable, either socially or biologically. As we approach the beginning of the 21st century, the substantial progress made in biology and genetics is radically challenging the roles, responsibilities and specific characteristics attributed to each sex, and yet, scarcely twenty years ago, these were thought to be " beyond dispute". We can safely say, with a few minor exceptions, that the definition of the sexes and their respective functions remained unchanged in the West from the beginning of the 19th century to the 1960s. The role distinction, raised in some cases to the status of uncompromising dualism on a strongly hierarchical model, lasted throughout this period, appealing for its justification to nature, religion and customs alleged to have existed since the dawn of time. The woman bore children and took care of the home. The man set out to conquer the world and was responsible for the survival of his family, by satisfying their needs in peacetime and going to war when necessary. The entire world order rested on the divergence of the sexes. Any overlapping or confusion between the roles was seen as a threat to the time-honored order of things. It was felt to be against nature, a deviation from the norm. Sex roles were determined according to the "place" appropriate to each. Women's place was, first and foremost, in the home. The outside world, i.e. workshops, factories and business firms, belonged to men. This sex-based division of the world(private and public)gave rise to a strict dichotomy between the attitudes, which conferred on each is special identity. The woman, sequestered at home, "cared, nurtured and conserved. " To do this, she had no need to be daring, ambitious, tough or competitive. The man, on the other hand, competing with his fellow men, was caught up every day in the struggle for survival, and hence developed those characteristics which were thought natural in a man. Today, many women go out to work, and their reasons for doing so have changed considerably. Besides the traditional financial incentives, we find ambition and personal fulfillment motivating those in the most favorable circumstances, and the wish to have a social life and to get out of their domestic isolation influencing others. Above all, for all women, work is invariably connected with the desire for independence.

单选题There had been another prison breakout. Five men got away and are still ______.