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单选题The latest Ucensus/U is encouraging.
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单选题The economy continued to{{U}}exhibit{{/U}} signs of decline in September
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单选题You will be informed of the details at the appropriate time.A. earlierB. properC. givenD. wrong
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单选题Reasons for Vegetarianism Vegetarians choose their diet for many reasons. Some are health - conscious, some believe animal agriculture hurts the environment and others have moral or religious objections to meat. Vegetarianism has become a popular health diet. Vegetarian favorites like fruit, vegetables, whole grains, and legumes (豆科植物) are low in fat and cholesterol (胆固醇) and rich in fiber, vitamins C and E. The American Dietetic Association even reports that vegetarians have lower blood pressure, cholesterol and body mass indexes than non - vegetarians. Of course, no diet is automatically healthy. Vegetarians must make sure they take in enough protein, calcium and vitamin B12 without overindulging in fatty, high -calorie foods like cheese. Many vegetarians are as concemed with the Earth' s well - being as they are with their own. Some vegetarians choose the diet for environmental reasons because they believe traditional agriculture has less of an ecological impact than animal agriculture. People usually try not to think about where their meat comes from. It can be unpleasant toimagine your hamburger as a wide - eyed cow in the pasture, let alone as an unhealthy animal in acramped (狭小的) factory farm. But for many vegetarians, disassociation or denial is impossible. They often feel morally unable to eat animals slaughtered for their meat. Vegans take their ethical objections a step further and refuse to eat dairy or eggs from animals that they believe have led unnaturally short and unhappy lives. Some of vegetarianism' s ethical concerns have spread to the mainstream. Even steadfast (忠诚的,忠实的) meat - eaters often like the idea of free - range (活动范围不受限制的) chicken or cage -free eggs- animal husbandry (饲养业) techniques that promise a more compassionate (表示怜悯同情的) altemative to traditional factory farming. Vegetarians have long chosen the diet for ethical reasons. Although the first practitioners only temporarily avoided meat for purification, the first regular vegetarians began the diet after philosophical awakenings in the Eastern Mediterranean region and India. The philosopher Pythagoras of Samos (c. 530 BC) taught vegetarianism to his followers. Pythagoras believed that because we are related to animals, we should treat them with kindness. Many other famous philosophers agreed--Plato, Epicurus and Plutarch condemned animal sacrifice and avoided eating meat. In India, the Buddhist religions teach that humans should not kill living creatures for food. Although Buddhism later declined in India, vegetarianism remained and spread among people Many upper classes and some lower classes adopted the virtue of harmlessness, which forbade hurting living things.
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单选题Margaret Mead"s reputation was established with the publication of her first book in 1982 and was enhanced by her many subsequent contributions to anthropology.
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单选题The Only Way Is Up Think of a modem city and the first image that come to mind is the skyline. It is full of great buildings, pointing like fingers to heaven. It is true that some cities don't permit buildings to go above a certain height. But these are cities concerned with the past. The first thing any city does when it wants to tell the world that it has arrived is to build skyscrapers. When people gather together in cities, they create a demand for land since cities are places where money is made, that demand can be met. And the best way to make money out of city land is to put as many people as possible in a space that covers the smallest amount of ground that means building upwards. The technology existed to do this as early as the 19th century. But the height of buildings was limited by one important factor. They had to be small enough for people on the top floors to climb stairs. People could not be expected to climb a mountain at the end of their journey to work, or home. Elisha Otis, a US inventor, was the man who brought us the lift or elevator, as he preferred to call it. However, most of the technology is very old lifts work using the same pulley system the Egyptians used to create the Pyramids. What Otis did was attach the system to a steam engine and develop the elevator brake, which stops the lift falling if the cords that hold it up are broken. It was this that did the most to gain public confidence in the new invention. In fact, he spent a number of years exhibiting lifts at fairgrounds, giving people the chance to try them out before selling the idea to architects and builders. A lift would not be a very good theme park attraction now. Going in a lift is such an everyday thing that it would just be boring. Yet psychologists and others who study human behavior find lifts fascinating. The reason is simple. Scientists have always studied animals in zoos. The nearest they can get to that with humans is in observing them in lifts. "It breaks all the usual conventions about the bubble of personal space we carry around with us and you just can't choose to move away," says workplace psychologist, Gary Fitzgibbon. Being trapped in this setting can create different types of tensions, he says. Some people are scared of them. Others use them as an opportunity to get close to the boss. Some stand close to the door. Others hide in the comers. Most people try and shrink into the background but some behave in a way that makes others notice them. There are a few people who just stand in a comer taking notes. Don't worry about them. They are probably from a university.
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单选题{{B}}第二篇{{/B}} Call American Their names A great difference between American social customs and those of other countries is the way in which names are used. Americans have little concern for "rank", especially socially. Most Americans do not want to be treated in any especially respectful way because of their age or social rank ; it makes them feel uncomfortable. Many Americans even find the terms "Mr. ", "Mrs. " or "Miss" too formal. People of all ages may prefer to be called by their first names. "Don't call me Mrs. Smith. Just call me Sally. " Using only first names usually indicates friendliness and acceptance. However, if you do not feel comfortable using only first names, it is quite acceptable to be more for mal. Just smile and say that after a while you will use first names but you are accustomed to being more when you first meet someone. Very often, introductions are made using both first and last names: "Mary Smith, this is John Jones. " In this situation you are free to decide whether to call the lady "Mary" or "Miss Smith".Sometimes both of you will begin a conversation using last names, and after a while one or both of you may begin using first names instead. You have a choice : if you don't want to use first names so quickly, no one will think it impolite if you continue according to you own custom.
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单选题The representative was asked to verify his earlier statement.
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单选题Reading for Pleasure The first thing I want to insist on is that reading should be enjoyable. Of course, there are many books that we all have to read, either to pass examinations or to acquire information, from which it is impossible to extract enjoyment. We are reading them for instruction, and the best we can hope is that our need for it will enable us to get through them without tedium. Such books we read unwillingly rather than willingly. But that is not the sort of reading I have in mind. The books I shall mention in due course will help you neither to get a degree nor to earn your living, they will not teach you to sail a boat or run a stopped motor, but they will help you to live more fully. However, they cannot do unless you enjoy reading them. Every man is his own best critic. Whatever the learned say about a book, however unanimous they are in their praise of it, unless it interests you, it is no business of yours. Don't forget that critics often make mistakes; the history of criticism is full of the serious mistakes some of them have made, and you are the final judge of the value to you of the book you are reading. This, of course, applies to the books I am going to recommend to your attention. We are none of us exactly like everyone else, only rather like, and it would be unreasonable to suppose that the books that have meant a great deal to me should be precisely those that will mean a great deal to you. If any of you who are not interested in the books I introduce to you, just put them down; they will be of no service to you if you do not enjoy them. No one is under an obligation to read poetry, fiction or literature. He must read them for pleasure, and who can claim that what pleases one man must necessarily please another?
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单选题The governor gave a rather Uvague/U outline of his tax plan.
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单选题A young man is being hailed a hero tonight after rescuing two children. A. reported B. proved C. caught D. praised
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单选题Hundreds of buildings were Uwrecked/U by the earthquake.
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单选题Cell Phone Lets Your Secret Out Your cell phone holds secrets about you. Besides the names and (51) that you've programmed into it, traces of your DNA linger (逗留) on the device, according to a new study. DNA is genetic material that (52) in every cell. Like your fingerprint, your DNA is unique to you (53) you have an identical twin. Scientists today routinely analyze DNA in blood, saliva (唾液), or hair left (54) at the scene of a crime. The results often help detectives identify (55) and their victims. Your cell phone can reveal more about you (56) you might think. Meghan J. McFadden, a scientist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the (57) . This made her wonder whether traces of DNA lingered on cell phones even when no blood was involved. (58) , she and colleague Margaret Wallace of the City University of New York analyzed the flip-open phones of 10 volunteers. They used swabs (药签) to collect (59) traces of the users from two parts of the phone: the outside, where the user holds it, and the (60) , which is placed at the user's ear. The scientists scrubbed the phones using a solution made mostly (61) alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones (62) for another week. Then the researchers collected the phones and repeated the swabbing of each phone once more. The scientists discovered DNA that (63) to the phone's speaker on each of the phones. Better samples were collected from the outside of each phone, but those swabs also picked up DNA that belonged to other people who had apparently also handled the phone. (64) , DNA showed up even in swabs that were taken immediately after the phones were scrubbed (擦洗). That suggests that washing won't remove all traces of evidence from a criminal's device. So cell phones can now be added to the (65) of clues that can decide a crime-scene investigation.
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单选题The advertising company was surprised by the Uadverse/U public reaction to the poster.
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单选题Many cities have restricted smoking in public places.
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单选题Helen Keller's achievements as an author and lecturer were an inspiration to millions.A. editorB. directorC. correspondentD. speaker
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单选题Winston Churchill gave a moving speech.
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单选题Living Standards The differences in living standards around the world are vast. In 1993, the average American had an income of about $25,000. In the same year, the average Mexican earned $7,000, and the average Nigerian earned $1,500. Not surprisingly, this large variation in average income is reflected in various measures of the quality of life. Changes in living standards over time are also large. In the United States, incomes have historically grown about 2 percent per year (after adjusting for changes in the cost of living). At this rate, average income doubles every 35 years. In some countries, economic growth has been even more rapid. In Japan, for instance, average income has doubled in the past 20 years, and in South Korea it has doubled in the past 10 years. What explains these large differences in living standards among countries and over time? The answer is surprisingly simple. Almost all variation in living standards is attributable to differences in countries' productivity--that is, the amount of goods and services produced from each hour of a worker's time. In nations where workers can produce a large quantity of goods and services per unit of time, most people enjoy a high standard of living; in nations where workers are less productive, most people must endure a more meager existence. Similarly, the growth rate of a nation's productivity determines the growth rate of its average income. The fundamental relationship between productivity and living standards is simple, but its implications are far-reaching. If productivity is the primary determinant of living standards, other explanations must be of secondary importance. For example, people might think that labor unions or minimum-wage laws contributed to the rise in living standards of American workers over the past century. Yet the real hero of American workers is their rising productivity. The relationship between productivity and living standards also has great implications for public policy. When thinking about how any policy will affect living standards, the key question is how it will affect our ability to produce goods and services. To improve living standards, policymakers need to raise productivity by ensuring that workers are well educated, have the tools needed to produce goods and services, and have access to the best available technology.
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单选题Without regular supplies of some hormones our capacity to behave would be seriously impaired; without others we would soon die. Tiny amounts of some hormones can modify our moods and our action, our inclination to eat or drink, our aggressiveness or submissiveness, and our reproductive and parental behavior. And hormones do more than influence adult behavior; early in life they help to determine the development of bodily form and may even determine an individual's behavioral capacities. Later in life the changing outputs of some endocrine glands and the body's changing sensitivity to some hormones are essential aspects of the phenomena of aging. Communication within the body and the consequent integration of behavior were considered the exclusive province of the nervous system up to the beginning of the present century. The emergence of endocrinology as a separate discipline can probable be traced to the experiments of Bayliss and Starling on the hormone secretion. This substance is secreted from cells in the intestinal walls when food enters the stomach; it travels through the bloodstream and stimulates the pancreas to liberate pancreatic juice, which aids in digestion. By showing that special cells secrete chemical agents that are conveyed by the bloodstream and regulate distant target organs or tissues, Bayliss and Starling demonstrated that chemical integration can occur without participation of the nervous system. The term "hormone" was first used with reference to secretion. Starling derived the term from the Greek hormone, meaning "to excited or set in motion." The term "endocrine" was introduced shortly thereafter, "Endocrine" is used to refer to glands that secrete products into the bloodstream. The term "endocrine" contrasts with "exocrine" which is applied to glands that secrete their products through ducts to the site of action. Examples of exocrine glands are the tear glands, the sweat glands, and the pancreas, which secretes pancreatic juice through a duct into intestine. Exocrine glands are also called duct glands, while endocrine glands are called ductless.
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单选题There was a profound silence after his remark.
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