单选题While his efforts were tremendous the results appeared to be very ______.

单选题Many politicians find that they can no longer afford the luxury of a personal Uchauffeur/U.

单选题The boy ______ his friend out of the apple by insisting that it was rotten, if not poisonous.

单选题Zoologists observe the way animals ______ with one another and their environment.

单选题Which of the following is implied by the writer of this passage?

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单选题 It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot make choice in that matter. You either have science or you don't have, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful bits. The only solid piece of scientific truth about which I feel totally confident is that we are profoundly ignorant about nature. I regard this as the maj or discovery of the past hundred years of biology. It is, in its way, an illuminating piece of news. It would have amazed the brightest minds of the 18th century Enlightenment to be told by any of us how little we known and how bewildering seems the way ahead. It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply make up stories to fill the gaps. Now that we have begun exploring in eamest, we are getting glimpses of how huge the questions are, and how far they are from being answered. Because of this, we are depressed. It is not so bad being ignorant if you are totally ignorant. The hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted. But we are making a beginning, and there ought to be some satisfaction. There are probably no questions we can think up that can't be answered, sooner or later, including even the matter of consciousness. To be sure, there may well be questions we can't think up ever, and therefore limits to the reach of human intellect, but that is another matter. Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, and pay attention.

单选题War is the social cancer of mankind. It is a pernicious form of ignorance, for it destroys not only its "enemies", but also the whole superstructure of what it is a part—and thus eventually it defeats itself.

单选题 Attacking an increasingly popular Internet business practice, a consumer watchdog group Monday filed a complaint with the Federal Trade Commission, asserting that many online search engines are concealing the impact special fees have on search results by Internet users. Commercial Alert, a 3-year-old group founded by consumer activist Ralph Na-der, asked the FTC to investigate whether eight of the Web's largest search engines are violating federal laws against deceptive advertising. The group said that the search engines are abandoning objective formulas to determine the order of their listed results and selling the top spots to the highest bidders without making adequate disclosures to Web surfers. The complaint touches a hot-button issue affecting tens of millions of people who submit search queries each day. With more than 2billion pages and more than 14 billion hyperlinks on the Web, search requests rank as the second most popular online activity after E-mail. The eight search engines named in Commercial Alert's complaint are: MSN, owned by Microsoft; Netscape, owned by AOL Time Warner; Directhit, owned by Ask Jeeves;HotBot and Lycos, both owned by Term Lycos; AltaVista, owned by CMGI; LookSmart,owned by KookSmart; and iWon, owned by a privately held company operating under the same name. Portland, Ore-based Commercial Alert could have named more search engines in its complaint, but focused on the biggest sites that are auctioning off spots in their results,said Gary Ruskin, the group's executive director. "Search engines have become central in the quest for learning and knowledge in our society. The ability to skew (扭曲) the results in favor of hucksters (小贩) without telling consumers is a serious problem. " Ruskin said. By late Monday afternoon, three of the search engines had responded to The Associated Press' inquiries about the complaint.Two, LookSmart and AltaVista, denied the charges. Microsoft spokesman Matt Pilla said MSN is delivering "compelling search results that people want". The FTC had no comment about the complaint Monday. The complaint takes aim at the new business plans embraced by more search engines as they try to cash in on their pivotal (关键) role as Web guides and reverses a steady stream of losses. To boost revenue,search engines in the past year have been accepting payments from businesses interested in receiving a higher ranking in certain categories or ensuring that their sites are reviewed more frequently.

单选题The most surprising aspect of the modern man's good conscience is that he asserts and justifies it in terms of the most varied and even contradictory metaphysical theories and social philosophies. The idealist Hegel and the materialist Marx agree in their fundamental confidence in human virtue, disagreeing only in their conception of the period and the social circumstances in which and the method by which his essential goodness is, or is to be, realized. The romantic naturalist Rousseau agrees with the rationalistic naturalists of the French Enlightenment, though in the one case the seat of virtue is found in natural impulse unspoiled by rational disciplines and in the other case it is reason which guarantees virtue. Among the rationalistic naturalists again there is agreement upon this point whether they are hedonistic or Stoic in their conceptions and whether they believe that reason discovers and leads to a natural harmony of egoistic impulses or that it discovers and affirms a natural harmony of social impulses. The whole Christian drama of salvation is rejected ostensibly because of the incredible character of the myths of Creation, Fall, Atonement, etc., in which it is expressed. But the typical modern is actually more certain of the complete irrelevance of these doctrines than of their incredibility. He is naturally not inclined to take dubious religious myths seriously, since he finds no relation between the ethos which informs them and his own sense of security and complacency. The sense of guilt expressed in them is to him a mere vestigial remnant of primitive fears of higher powers, of which he is happily emancipated. The sense of sin is, in the phrase of a particularly vapid modern social scientist, "a psychopathic aspect of adolescent mentality". The universality of this easy conscience among moderns is the more surprising since it continues to express itself almost as unqualifiedly in a period of social decay as in the eighteenth- and nineteenth-century heyday of a bourgeois culture. The modern man is involved in social chaos and political anarchy. The Marxist escape from this chaos has developed in Russia into a regime of unparalleled proportions. Contemporary history is filled with manifestations of man's hysteria and furies; with evidences of his demonic capacity and inclination to break the harmonies of nature and defy the prudent canons of rational restraint. Yet no cumulation of contradictory evidence seems to disturb modern man's good opinion of himself. He considers himself the victim of corrupting institutions which he is about to destroy or reconstruct, or of the confusions of ignorance which an adequate education is about to overcome. Yet he continues to regard himself as essentially harmless and virtuous. The question therefore arises how modern man arrived at, and by what means he maintains, an estimate of his virtue in such pathetic contradiction with the obvious facts of his history.

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单选题There's a whole of bills waiting to be paid.

单选题Telecommuting--substituting the computer for the trip to the job-has been hailed as a solution to all kinds of problems related to office work．For workers it promises freedom from the office, less time wasted in traffic, and help with child-care conflicts．For management, telecommuting helps keep high performers on board．minimizes lateness and absenteeism by eliminating commuters, allows periods of solitude for high-concentration tasks, and provides scheduling flexibility．In some areas, such as Southern Califomifi and Seattle, Washington, local govemments are encouraging companies to start telecommuting programs in order to reduce rush-hour traffic and improve air quality． But these benefits do not come easily．Making a telecommuting program work requi res careful planning and an understanding of the differences between telecommuting realities and popular images．Many workers are seduced by rosy illusions of life as a telecommuter. A computer programmer from New York City moves to the quiet Adirondack Mountains and stays in contact with her office via computer．A manager comes in to his office three days a week and works at home the other two．An accountant stays home to care for her sick child； she hooks up her telephone modem connections and does office work between calls to the doctor． These are powerful images, but they are a limited reflection of reality．Telecommuting workers soon learn that it is almost impossible to concentrate on work and care for a young child at the same time．Before a certain age, young children cannot recognize, much less respect, the necessary boundaries between work and family．Additional child support is necessary if the parent is to get any work done．Management, too, must separate the myth from the reality．Although the media has paid a great deal of attention to telecommuting, in most cases it is the employee's situation, not the availability of technology,that precipitates a telecommuting arrangement． That is partly why,despite the widespread press coverage, the number of companies with work-at-home programs of policy guidelines remains small．

单选题It's all annual back-to-school routine. One morning you wave goodbye, and that (56) evening you're burning the late-night oil in sympathy. In the race to improve educational standards, (57) are throwing the books at kids. (58) elementary school students are complaining of homework (59) . What's a well-meaning parent to do? As hard as (60) may be, sit back and chill, experts advise. Though you've got to get them to do it, (61) helping too much, or even examining (62) too carefully, you may keep them (63) doing it by themselves. "I wouldn't advise a parent to check every (64) assignment," says psychologist John Rosemond, author of Ending the Tough Homework. "There's a (65) of appreciation for trial and error. Let your children (66) the grade they deserve. " Many experts believe parents should gently look over the work of younger children and ask them to rethink their (67) . But "you don't want them to feel it has to be (68) ," she says. That's not to say parents should (69) homework first, they should monitor how much homework their kids (70) . Thirty minutes a day in the early elementary years and an hour in (71) four, five, and six is standard, says Rosemond. For junior-high students it should be " (72) more than an hour and a half," and two for high school students. If your child (73) has more homework than this, you may want to check (74) other parents and then talk to the teacher about (75) assignments.

单选题The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise. Millions of individuals became (1) in a variety of aerobic activities, and (2) thousands of health spas (3) around the country to capitalize on this (4) interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed (5) to this aerobic fitness movement, even a national chain with spas in most major cities. However, their (6) was not on aerobics, (7) on weight-training programs designed to develop muscular mass, (8) , and endurance in their primarily male (9) . These fitness spas did not seem to benefit (10) from the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs (11) few, if (12) , health benefits. In recent years, however, weight training has again become increasingly (13) for males and for females. Many (14) programs focus not only on developing muscular strength and endurance but on aerobic fitness as well. (15) , most physical-fitness tests have usually included measures of muscular strength and endurance, not for health-related reasons, but primarily (16) such fitness components have been related to (17) in athletics. (18) , in recent years, evidence has shown that training programs designed primarily to improve muscular strength and endurance might also offer some health (19) as well. The American College of Sports Medicine now (20) that weight training be part of a total fitness program for healthy Americans.

单选题Which is true about "mass production" according to the author?

单选题{{B}}Passage 2{{/B}} Experimenting with household objects can often get young people in trouble, but for one intelligent, inquisitive boy, it created the foundation of his future. Young Henry Ford discovered through his curious mind that many objects were useful for much more than their intended purposes. For example, he used to tinker with his father's fanning tools to see what they could do. He used his mother's darning needles to help him repair watches. And once, in an effort to study the power to steam, he sat and watched water boil in his mother's teapot. Little did Ford know that these experiments would lead him to creating a means of transportation that would change the world forever. Henry Ford was born on July 30, 1863, near Detroit, Michigan. He was the oldest of six children and the grandson of immigrants from Ireland who came to America in 1847. His family were farmers, and he grew up on the family farm where he began to develop mechanical skills. Through his experiences on the farm with his father, Henry developed a great curiosity about how things worked. When traveling in his father's wagon, Henry would often wonder if there were a faster and easier way to travel. A time he remembered for the rest of his life happened when he was only thirteen years old. He was riding in the wagon with his father, and he spotted a steam engine traveling along the road under its own power. Henry was so excited that he ran toward the engine and asked its driver question after question about the incredible machine. This machine was used for sawing wood and other tasks that required it to remain stationary, but the engine was mounted on wheels to propel itself from one location to another. Henry was so excited that the driver let him fire the engine and even run it. From that point on, Henry Ford's dream of creating a self-propelled vehicle began to materialize. Ford wanted to move to Detroit to work in the machine shops, but he stayed on the family farm until he was seventeen. At that time, he started his successful journey by moving to Detroit. He began working at the Michigan Car Company for $1.10 a day, but he was fired because he was faster than anyone else at making repairs. It took him only one hour to do what took others five hours to do! From there he took on a variety of different jobs but his dream continued to be the creation of a "horseless carriage." No matter where he worked, he continued to read about gas engines and experiment in his own workshop. In 1896 Ford's efforts began to pay off when he was working at the Detroit Edison Illuminating Company. His first self-propelled vehicle was ready for a try-out. As it started to run, it actually frightened the horses and caused many people to protest, but it ran. It was at the Detroit Edison Illuminating Company where Ford met Thomas Edison. Ford had always admired Thomas Edison's work and was excited when he discovered that Edison agreed that it had possibilities and encouraged him to continue. This gave Ford the incentive to invent an operable car that was written up in the Detroit Journal where he was described as a "mechanical engineer." Soon his work on automobiles caused him to have to leave the Detroit Edison Illuminating Company. Ford wanted more time to work on automobile building so he was forced to quit his job. Ford's dream began to materialize with his invention of automobiles and the development of the assembly line. His dream of creating a "motor car for the great multitude.., constructed of the best materials by the best men to be hired.., so low in price that no man making a good salary will be unable to own one..." came true with the invention of his ninth car, the Model T. It sold more than any other car for eighteen years between 1908 and 1926. This commonplace, hard working, sturdy car made up over one half of all the cars sold at this time. Today we are reminded of Ford's genius whenever we see one of his "horseless carriages" traveling across the many highways in our world. Who would have guessed for the world? The next time you see a child experimenting with different common objects, keep in mind that you may be witnessing the beginning of another great invention.

单选题The American students came to our school in November, and we then made a______visit to theirs.

单选题At the party we found that shy girl ______ her mother all the time.(2013年北京航空大学考博试题)