单选题Not until the advent of histochemistry could the anatomist see through the microscope which cells carry specific enzymes or gauge how active these enzymes are in different cells under various conditions.

单选题Which of the following is NOT a method of protecting one's house from a hurricane?

单选题The passage tells us that researchers wish that they could find out ______.

单选题The writer argues that going about the problem of pronunciation in the wrong way is ______.

单选题{{B}}Passage Two{{/B}} Mass transportation revised the social and economic fabric of the American city in three fundamental ways. It catalyzed physical expansion, it sorted out people and land uses, and it accelerated the inherent instability of urban life. By opening vast areas of unoccupied land for residential expansion, the omnibuses, horse railways, commuter trains, and electric trolleys pulled settled regions outward two to four times more distant from city centers than they were inthe premodern era. In 1850, for example, the borders of Boston lay scarcely two miles from the old business district. By the turn of the century the radius extended ten miles. Now those who could afford it could live far removed from the old city center and still commute there for work, shopping, and entertainment. The new accessibility of land around the periphery of almost every major city sparked an explosion of real estate development and pulled what we now know as urban sprawl. Between 1890 and 1920, for example, some 250000 new residential lots were recorded within the borders of Chicago; most of them located in outlying areas. Over the same period, another 550000 were plotted outside the city limits but within the metropolitan area. Anxious to take advantage of the possibilities of commuting, real estate developers added 800000 potential building sits to the Chicago region in just thirty years lots that could have housed five to six million people.

单选题The spontaneity of children's artwork A sets it B apart from the regulated uniformity of C much of what otherwise D go on in traditional elementary classrooms.

单选题Lighting levels are carefully controlled to fall within an acceptable level for optimal reading convenience.

单选题Mr. White brought a countercharge against you because you had______ him for smuggling several pieces of antiques and cultural relics. A. charged B. indicted C. accused D. prosecuted

单选题What docs "off the grid" mean in the context of this story?

单选题He showed great ______ in solving his problems.

单选题His office is ______ to the President's; it usually takes him about three minutes to get there.

单选题 During the past generation, the American middle-class family that once could count on hard work and fair play to keep itself financially secure has been transformed by economic risk and new realities. Now a pink slip, a bad diagnosis or a disappearing spouse can reduce a family from solidly middle class to newly poor in a few months. In just one generation, millions of mothers have gone to work, transforming basic family economics. Scholars, policymakers, and critics of all stripes have debated the social implications of these changes, but few have looked at the side effect family risk has risen as well. Today's families have budgeted to the limits of their new two-paycheck status. As a result they have lost the parachute they once had in times of financial setback--a back-up earner (usually Mom) who could go into the workforce if the primary earner got laid off or fell sick. This "added-worker effect" could support the safety net offered by unemployment insurance or disability insurance to help families weather bad times. But today, a disruption to family fortunes can not longer be made up with extra income from an otherwise--stay-at-home partner. During the same period, families have been asked to absorb much more risk in their retirement income. Steelworkers, airline employees, and now those in the auto industry are joining millions of families who must worry about interest rates, stock market fluctuation, and the harsh reality that they may outlive their retirement money. For much of the past year, President Bush campaigned to move Social Security to a savings-account model, with retirees trading much or all of their guaranteed payments for payments depending on investment returns. For younger families, the picture is not any better. Both the absolute cost of healthcare and the share of it borne by families have risen--and newly fashionable health-savings plans are spreading from legislative halls to Wal-Mart workers, with much higher deductibles and a large new does of investment risk for families' future healthcare. Even demographics are working against the middle class family, as the odds of having a weak elderly parent--and all the attendant need for physical and financial assistance have jumped eightfold in just one generation. From the middle-class family perspective, much of this, understandably, looks far less like an opportunity to exercise more financial responsibility, and a good deal more like a frightening acceleration of the wholesale shift of financial risk onto their already overburdened shoulders. The financial fallout has begun, and the political fallout may not be far behind.

单选题Thousands of years ago man used handy rocks for his surgical operations. Later he used sharp bone or horn, metal knives and more recently, rubber and plastic. And that was where we stuck, in surgical instrument terms, for many years. In the 1960s a new tool was developed, one which was, first of all, to be of great practical use to the armed forces and industry, but which was also, in time, to revolutionize the art and science of surgery. The tool is the laser and it is being used by more and more surgeons all over the world, for a very large number of different complaints. The word laser means: Light Amplification by Stimulated Emission of Light. As we all know, light is hot; any source of light ——from the sun itself down to a humble match burning ——will give warmth. But light is usually spread out over a wide area. The light in a laser beam, however, is concentrated. This means that a light with no more power than that produced by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized beam. Experiments with these pinpoint beams showed researchers that different energy sources produce beams that have a particular effect on certain living cells. It is now possible for eye surgeons to operate on the back of the human eye without harming the front of the eye, simply by passing a laser beam right through the eyeball. No knives, no stitches (刀口缝合), no unwanted damage ——a true surgical wonder. Operations which once left patients exhausted and in need of long periods of recovery time now leave them feeling relaxed and comfortable. So much more difficult operations can now be tried. The rapid development of laser techniques in the past ten years has made it clear that the future is likely to be very exciting. Perhaps some cancers will be treated with laser in a way that makes surgery not only safer but more effective. Altogether, tomorrow may see more and more information coming to light on the diseases which can be treated medically.

单选题Thousands of people ______ from Greece every year to work in West Germany.

单选题{{B}}Passage 1{{/B}} In old days, when a glimpse of stocking was looked upon as something far too shocking to distract the serious work of an office, secretaries were men. Then came the first World War and the male secretaries were replaced by women. A man's secretary became his personal servant, charged with remembering his wife's birthday and buying her presents; taking his suits to the dry-cleaners; telling lies on the telephone to keep people he did not wish to speak to at bay and, of course, typing and filing and taking shorthand. Now all this may be changing again. The microchip and high technology is sweeping the British office, taking with it much of the routine clerical work that secretaries did. "Once office technology takes over generally, the status of the job will rise again because it will involve only the high-powered work and then men will want to do it again." That was said by one of the executives (male) of one of the biggest secretarial agencies in this country. What he has predicted is already under way in the US. One girl described to me a recent temporary job placing men in secretarial jobs in San Francisco. She noted that all the men she dealt with appeared to be gay so possibly that it was just a new twist to the old story. Over here, though, there are men coming onto the job market as secretaries. Classically, girls have learned shorthand and typing and gone into a company to seek their fortune from the bottom-and that's what happened to John Bowman. Although he joined a national grocery chain as secretary to its first woman senior manager, he has since been promoted to an administration job. "I filled in the application form and said I could do audio/typing, and in fact I was the only applicant. The girls were reluctant to work for this young, glamorous new woman with all this power in the firm." "I did typing at school, and then a commercial course. I just thought it would be useful finding a job. I never got any funny treatment from the girls, though I admit I've never met another male secretary. But then I joined the Post Office as a clerk and carelessly played with the typewriter, and wrote letters, and thought that after all secretaries were getting a good ￡21,000 a year more than clerks like me. There was a shortage at that time, you see." "It was simpler working for a woman than for a man. I found she made decisions, she told everybody what she thought, and there was none of that male bitchiness, or that stuff 'ring this number for me dear, ' which men go in for. " "Don't forget, we were a team-that's how I feel about it-not boss and servant but two people doing different things for the same purpose. Once high technology has made the job of secretary less routine, will there be male takeover? Men should beware of thinking that they can walk right into the better jobs. There are a lot of women secretaries who will do the job as well, as they are as efficient and well-trained to cope with word processors and computers as men.

单选题（北京航空航天大学2010年试题） When an invention is made, the inventor has three possible【1】of action open to him; he can give the invention to the world by publishing it, keep the idea【2】, or patent it. A【3】patent is the result of a bargain【4】between an inventor and the state, but the inventor gets a limited period of monopoly and publishes full details of his invention to the public after that period【5】. Only in the most exceptional circumstances【6】the lifespan of a patent【7】to alter this normal process of events. The longest extension ever【8】was to Georges Valensi; his 1939 patent for color TV receiver circuit was extended until 1971 because for most of the patent's normal life there was no color TV to【9】and thus no hope for reward for the invention. Because a patent remains permanently【10】after it has terminated, the shelves of the library attached to the【11】office contain details of literally millions of ideas that are free for anyone to use and, if【12】than half a century, sometimes even re-patent. Indeed, patent experts often advise anyone【13】to avoid the high cost of conducting a search through【14】patents that the one sure way of violation of any other inventor's right is to plagiarize a dead patent. Likewise, because publication of an idea in any other form【15】invalidates further patents on that idea, it is traditionally【16】to take ideas from other areas of print. Much modern technological advance is【17】on these presumptions of legal security. Anyone closely【18】in patents and inventions soon learns that most "new" ideas are, in fact, as old as the hills. It is their reduction to commercial practice, either through necessity or dedication, or through the availability of new technology,【19】makes news and money. The basic patent for the theory for magnetic recording dates back to 1886. Many of the original ideas behind television originate【20】the late 19th and early 20th century. Even the Volkswagen rear engine car was anticipated by a 1904 patent for a cart with the horse at the rear.

单选题{{B}}Passage One{{/B}} Granted, it's a pretty serious time to be living on this planet. Insane terrorists, political fingerpointing, a string of awful hurricanes, you name it, all filling the headlines with grim reminders that life aren't so peachy. Even reading the smaller stories in national publications seems to indicate that the world is run by gruwnups, and they're busy taking the fun out of everything. The other day I was browsing through one of those magazines that explain serious science news to us dumbbells, and came across an item which announced that two different companies have perfected a pill that contains all the good-for-you stuff found in a glass of red wine and is completely non-alcoholic. Now I'm sure there are other adults out there who, like me, were pleasantly surprised to learn that a little tipple of pinot noir with the roast duckling might not turn one into a slobbering drunk but may actually be beneficial to your health. The news was a single candle, lit in a world of darkness, easing a tiny part of that big rock of guilt we constantly lug uphill. Of course, the minute the news got around, some Italian scientists began putting that age-old innocent beverage through a freeze-drying process that preserved the benefits while removing the alcohol along with all that unnecessary enjoyment. Swell news for teetotalers, but just another indication that our main focus is on getting through each grim day without a moment of relief. Sound far-fetched? Even comic books (a main source of amusement, when I was a tad) have become literary vehicles for philosophical messages. I figure it's all a big plot. Something probably cooked up by mommies and dictators and insurance companies and people who play their boom boxes too loudly. Just to make sure that you and I are prevented from squeezing a dollop of guilt-free enjoyment from a modest amount of fermented grape juice. Mark my words, the next great leap in science won't be in the field of cloning or DNA research or rocket science. What they'll do is develop a way to turn a big juicy standing rib roast into a pinch of tasteless grey protein-packed powder you can sprinkle on a piece of white bread and have for dinner. Remember: just because we're paranoid don't mean they ain't out to get us.

单选题It is too early to ______ the effect of the new measure.(2004年湖北省考博试题)

单选题You are required to fill out this form and_____it to the officer at that counter.