单选题And the topic "fat" is forbidden. Even tile slightest paunch betrays that one is los ing the trim and______of youth.

单选题We must get there ______ before he has a chance to break the news to her.

单选题______any instructiorts from the Head Office, we couldn't make any decision. A. Not receiving B. Receiving no C. Not having recived D. Having not received

单选题There's no ______ from my bedroom window except for some factory chimneys.A. viewB. sceneC. sightD. look

单选题Modern biology is based on several unifying themes, such as the cell theory, genetics and inheritance, Francis Crick's central dogma of information flow, and Darwin and Wallace's theory of evolution by natural selection. In this first unit we will examine these themes and the nature of science. The ancient Greek philosopher Anaxiamander (611- 547 B. C. ) and the Roman philosopher Lucretius (99 – 55 B. C. ) coined the concept that all living things were related and that they had changed over time. The classical science of their time was observational rather than experimental. Another ancient Greek philosopher Aristotle, developed his Scala Naturae, or Ladder of Life, to explain his concept of the advancement of living things from inanimate matter to plants, then animals and finally man. This concept of man as the "crown of creation" still plagues modern evolutionary biologists. Post-Aristotlean "scientists" were constrained by the prevailing thought patterns of the Middle Ages—the inerrancy of the biblical book of Genesis and the special creation of the world in a literal six days of the 24-hour variety. Archbishop James Ussher of Ireland, in the late 1600's calculated the age of the earth based on the geneologies from Adam and Eve listed in the biblical book of Genesis. According to Ussher's calculations, the earth was formed on October 22, 4004 B. C. These calculations were part of Ussher's book, History of the World. The chronology he developed was taken as factual, and was even printed in the front pages of Bibles. Ussher's ideas were readily accepted, in part because they posed no threat to the social order of the times; comfortable ideas that would not upset the linked apple carts of church and state. Often new ideas must "come out of left field", appearing as wild notions, but in many cases prompting investigation which may later reveal the "truth". Ussher's ideas were comfortable, the Bible was viewed as correct, therefore the earth must be only 5, 000 years old. Geologists had for some time doubted the "truth" of a 5, 000 year old earth. Leonardo da Vinci (painter of the Last Supper, and the Mona Lisa, architect and engineer) calculated the sedimentation rates in the Po River of Italy. Da Vinci concluded it took 200, 000 years to form some nearby rock deposits. Galileo, convicted heretic for his contention that the Earth was not the center of the Universe, studied fossils (evidence of past life) and concluded that they were real and not inanimate artifacts. James Hutton, regarded as the father of modern geology, developed the Theory of Uniformitarianism, the basis of modern geology and paleontology. According to Hutton's work, certain geological processes operated in the past in much the same fashion as they do today, with minor exceptions of rates, etc. Thus many geological structures and processes cannot be explained if the earth was only a mere 5, 000 years old.

单选题The statement "In my fridgeless fifties childhood, I was fed well and healthily." (Line 1, Par

单选题They______be singing my favourite English song in the classroom. I can hear it.

单选题{{B}}Passage Four{{/B}} Of all the problems facing modern astronomers, perhaps the most fascinating one is "can intelligent life exist elsewhere?" Since the earth is a unimportant planet moving round an unimportant star, it would be a pride on our part to suppose that we are the only intelligent beings in the universe. But to obtain proof is difficult. The main trouble is that our neighbor worlds, the bodies in the Solar System appear to be unsuitable for advanced life forms. The Moon may be ruled out at once; it has hardly any atmosphere. Venus is little better; the surface temperature is extremely high and the atmosphere is mostly carbon dioxide. Mars with a very thin atmosphere and a severe shortage of water, may well support simple that life seems no hope of finding animals, while the alternative Martians of the story-tellers have since been given up. Of course this has not stopped the flow of bright ideas of communicating with the supposed people on Mars. In the early nineteenth century the great mathematician Gauss suggested planting tree-patterns in patterns, so that the Martians would see them and replay suitably. Following up this idea, the Austrian scientist Karl Littrow proposed, digging very wide ditches in the Sahara, triangular in patterns, and then filling them with petrol or some substance so that, when lit, the ditches would present Martian observers with a "flaming triangular" which would show the existence of intelligent minds. Even better were the plans of Charles Cross, a French writer of the 1870s ,who wanted to build a large mirror to reflect the sun's rays and concentrate, them on the surface of Mars, thereby making a vast burning-glass. By swinging the mirror round, Cross explained it would be practicable to write words in the Martion deserts simply by burning the sand. For many years, he bombarded the French government with literature about his plan and was very disappointed when no official interest was shown.

单选题A. express B. extra C. tend D. length

单选题E-mail—can't live with it, can't live without it. Con artists and real artists, advertisers and freedom fighters, lovers and sworn enemies-they’ve all flocked to email as they would to any new medium of expression. E-mail is convenient, saves time, brings us closer to one another, helps us manage our ever-more-complex lives. Books are written, campaigns conducted; crimes committed-all via e-mail. But it is also inconvenient, wastes our time, isolates us in front of our computers and introduces more complexity into our already too-harried lives. To skeptics, E-mails just the latest chapter in the evolving history of human communication. A snooping husband now discovers his wife's affair by reading her private e-mail--but he could have uncovered the same sin by finding letters a generation ago. Yet E-mail-and all online communication-is in fact something truly different; it captures the essence of life at the close of the 20th century with an authority that few other products of digital technology can claim. Does the pace of life seam ever faster? E-mail simultaneously allows us to cope with that acceleration and contributes to it. Are our attention spans shriveling under barrages of new, improved forms of stimulation? The quick and dirty E-mail is made to order for those whose ability to concentrate is measured in nanoseconds. If we accept that the creation of the globespanning Internet is one of the most important technological innovations of the last half of this century, then we must give E-mail--the living embodiment of human connections across the Net--pride of place. The way we interact with each other is changing; E-mail is both catalyst and the instrument of that change. The scope of the phenomenon is mind-boggling. Worldwide, 225 million people can spend and receive E-mail. Forget about the Web or e-commerce or even online pornography: E-mail is the Internet's true killer app—the software application that we simply must have, even if it means buying a $2,000 computer and plunking down ＄20 a month to America Online. According to Donna Hoffman, a professor of marketing at Vanderbilt University, one survey after another finds that when online users are asked what they do on the Net, "E-mail is always No. 1." Oddly enough, no one planned it, and one predicted it. When research scientists first began cooking up the Internet's predecessor, the Arpanet, in 1968, their primary goal was to enable disparate computing centers to share resources. "But it didn't take very long before they discovered that the most important thing was the ability to send mail around, which they had not anticipated at all," says Eric Auman, chief technical officer of Sendmail, Inc.

单选题This amazing woman was born a poor German princess and became one of Russia"s greatest emperors. She was born Princess Sophia August Frederika on May 2, 1729, in the Baltic seaport town of Stettin, then a part of German Pomerania. Her father was an obscure German military prince named Christian August, and her mother was Princess Joanna Elizabeth of Holstein-Gottorp. Her father was. ruler of the tiny principality of Anhalt-Zerbst, but the greater part of his life was spent as an officer in the service of Prussia. In 1744, she arrived in Moscow with her mother to marry Peter, the Grand Duke of Holstein, grandson of Peter the Great and heir to the Russian throne (later Peter Ⅲ). Their marriage was an unhappy one. Catherine (now baptized into the Russian Orthodox Church under that name) spent much of her time preparing for her future reign. In 1761, Peter was crowned emperor. Supported by the Russian military, Catherine overthrew Peter in 1762 and became Catherine II. She quickly began to make changes in government and society based on ideas learned from French-Philosophers of the Enlightenment and the authors of ancient Rome. She was a friend of Voltaire and other European writers, and wrote stories and plays. She supported French writer and philosopher Denis Diderot when he was broken-she bought his library, hired him to look after it at his own house, for which she paid him a salary for the next 50 years in advance. Catherine patronized the arts, music and education, and she put millions of rubles into the creation of the Hermitage Museum, which today is the delight of Russia and the world. No other Russian monarch appreciated beauty as much as Catherine. She set the stage for the emergence of a national Russian culture that would become something unique and wonderful in the 19th century. Catherine established the first schools for women, including the Smolny Institute for in Petersburg. Also, Russia"s first public schools and universities were founded during her reign. Her rule was one of the most prosperous periods of the Russian Empire. She undertook a wide range of internal political reforms, waged two successful wars against the Ottoman Empire and occupied vast territories on Russia"s southern boundaries, eventually advancing the country"s border to the Black Sea.

单选题The study of philosophies should make our own ideas flexible. We are all of us apt to take certain general ideas for granted, and call them common sense. We should learn that other people have held quite different ideas, and that our own have started as very original guesses of philosophers. A scientist is apt to think that all the problems of philosophy will ultimately be solved by science. I think this is true for a great many of the questions on which philosophers still argue. For example, Plato thought that when we saw something, one ray of light came to it from the sun, and another from our eyes and that seeing was something like feeling with a stick. We now know that the light comes from the sun, and is reflected into our eyes. We don't know in much detail how the changes in our eyes give rise to sensation. But there is every reason to think that as we learn more about the physiology of the brain, we shall do so, and that the great philosophical problems about knowledge are going to be pretty fully cleared up. But if our descendants know the answers to these questions and others that perplex us today, there will still be one field of which they do not know, namely the future. However exact our science; we cannot know it as we know the past. Philosophy may be described as argument about things of which we are ignorant. And where science gives us a hope of knowledge it is often reasonable to suspend judgment. That is one reason why Marx and Engels quite rightly wrote to many philosophical problems that interested their contemporaries. But we have got to prepare for the future, and we cannot do so rationally without some philosophy. Some people say we have only got to do the duties revealed in the past and laid down by religion, and god will look after the future. Others say that the world is a machine and the course of future events is certain, whatever efforts we may make. Marxists say that the future depends on ourselves, even though we are part of the historical process. This philosophical view certainly does inspire people to wry great achievements. Whether it is true or not, it is powerful guide to action. We need a philosophy, then, to help us to tackle the future. Agnosticism easily becomes an excuse for laziness and conservatism. Whether we adopt Marxism or any other philosophy, we cannot understand it without knowing something of how it developed. That is why knowledge of the history of philosophy is important to Marxists, even during the present critical days.

单选题"Can you ask your neighbors for help?""I'm afraid not. I ______ know any of them."

单选题It is well known that the popular singer has a/an______car in addition to a large house.

单选题oracle's current difficulty to take over PeopleSoft is that

单选题It's becoming something of a joke along the Maine-Canada border. So many busloads of retired people crisscross the line looking for affordable drugs that the roadside stands should advertise, "Lobsters. Blueberries. Lipitor. Coumalin. " Except, of course, that such a market in prescription drugs would be illegal. These senior long-distance shopping sprees fall in a legal gray zone. But as long as people cross the border with prescriptions from a physician and have them filled for no more than a three-month supply for personal use, customs and other federal officials leave them alone. The trip might be tiring, but people can save an average of 60 percent on the cost of their prescription drugs. For some, that's the difference between taking the drugs or doing without. "The last bus trip I was on six months ago had 25 seniors," says Chellie Pingree, former Maine state senator and now president of Common Cause. "Those 25 people saved $19,000 on their supplies of drugs. " Pingree sponsored Maine RX, which authorizes a discounted price on drugs for Maine residents who lack insurance coverage. The law was challenged by drug companies but recently upheld by the U. S. Supreme Court. It hasn't yet taken effect. Figuring out ways to spend less on prescription drugs has become a multifaceted national movement of consumers, largely senior citizens. The prescription drug bill in America is $160 billion annually, and people over 65 fill five times as many prescriptions as working Americans on average. "But they do it on health benefits that are half as good and on incomes that are half as large. " says Richard Evans, senior analyst at Sanford C. Bernstein, an investment research firm. What's more, seniors account for 20 percent of the voting public. It's little wonder that the May 19 Supreme Court ruling got the attention of drug manufacturers and politicians across the country. The often-over-looked state of 1.3 million tucked in the northeast corner of the country became David to the pharmaceutical industry's Goliath. The face-off began three years ago when state legislators like Pingree began questioning why Maine's elderly population had to take all those bus trips.

单选题Speaker A: Do you mind if I sit down here? Speaker B: ______ A. Of course. Do sit down, please. B. Not at all. There's plenty of room. C. Never mind. I'd like to have some companion. D. Sure, I'd like to have somebody to talk to.

单选题______ that you were out, I wouldn't have bothered to come all the way at that time of night. A. If I should know B. If I know C. Had I known D. Were I to know

单选题Apparently first described in 1964, transient global amnesia consists of a(n) abrupt loss of memory lasting from a few seconds to a few hours, without loss of consciousness or other evidence of impairment.