单选题Hundreds of cyclists assembled in Central Park in Pudong this morning to take part in the event. A. appeared B. walked C. met D. combined

单选题New Foods and the New World In the last 500 years, nothing about people—not their clothes, ideas, or languages has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree (可可树)by South American Indians. The Spanish introduced it to the rest of the world during the 1500's. And although it was very expensive, it quickly became fashionable. In London, shops where chocolate drinks were served became important meeting places. Some still exist today. The potato is also from the New World. Around 1600, the Spanish brought it from Peru to Europe, where it soon was widely grown. Ireland became so dependent on it that thousands of Irish people starved when the crop failed during the "Potato Famine(饥荒)" of 1845—1846, and thou- sands more were forced to leave their homeland and move to America. There are many other foods that have traveled from South America to the Old World. But some others went in the opposite direction. Brazil is now the world's largest grower of coffee, and coffee is an important crop in Colombia and other South American countries. But it is native to Ethiopia, a country in Africa. It was first made into a drink by Arabs during the 1400's. According to an Arabic legend, coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee bush. He tried one and experienced the "wideawake" feeling that one-third of the world's population now starts the day with.

单选题{{B}}第二篇{{/B}} Where Have All the Bees Gone? Scientists who study insects have a real mystery on their hands. All across the country, honey bees are leaving their hives(蜂巢) and never returning. Researchers call this phenomenon colony-collapse(群体瘫痪) disorder. It is reposed that 25 to 40 percent of the honeybees in the US have vanished from their hives since last fall. So far, no one can explain why. Colony collapse is a serious concern because bees play an important role in the production of about one-third of the foods we eat. As they feed, honeybees spread pollen(花粉)from flower to flower. Without this process, a plant can't produce seeds or fruits. Now, a group of scientists and beekeepers have teamed up to try to figure out what's causing the alarming collapse of so many colonies. They hope to find out what's contributing to the decline and to prevent bee disappearance in the future. It could be that disease is causing the disappearance of the bees. To explore that possibility, Jay Evans, a researcher at the United States Department of Agriculture (SDA) Bee Research Laboratory, examines bees taken from colonies that are collapsing. "We know what a healthy bee should look like on the inside and we can look for physical signs of disease. " he says. And bees from collapsing colonies don't look very healthy. "Their stomachs are worn down compared to the stomachs of healthy bees. " Evans says. It may be that a parasite(寄生虫) making the bees' digestive organs. Their immune(免疫的)systems may not be working as they should. Moreover, they have high levels of bacteria inside their bodies. Another cause of colony-collapse disorder may be certain chemicals that farmers apply to kill unwanted insects on crops, says Jerry Hayes, chief bee inspector for the Florida Department of Agriculture. Some studies, he says, suggest that a certain type of insecticide (杀虫剂)affects the honeybee's newels system and memory. "It seems like honeybees are going out and getting confused about where to go and what to do. " he says. If it turns out that a disease is contributing to colony collapse, bees' genes could explain why some colonies have collapsed and others have not. In any group of bees there are many different kinds of genes. The more different genes a group have, the higher the group's genetic diversity. So far scientists haven't determined the role of genetic diversity in colony collapse, but it's a promising theory, says Evans.

单选题These are our motives for doing it.

单选题This concept of being a sissy is s key concept for understanding of American character: it has no exact parallel in any other society. It has nowadays become a term of criticism which can be applied to anyone, regardless of age or sex ; although it is similar to some English terms of public shame (e. g. coward, crybaby, nanny, mother's darling) it is more than any of them. Put it simply, it means showing more dependence or fear or lack of initiative or passivity than is suitable for the occasion. It can be applied to a gambler hesitant about risking his money, to a mother over anxious about the pain her child may suffer at the hands of a surgeon, to a boy shy about asking a popular girl for a" date", to stage girl, to overt anxiety about a visit to the dentist, to a little girl crying because her doll is broken ,just as well as to occasions which directly elicit courage or initiative or independence and which may be responded to more or less adequately. It is the overwhelming fear of all American parents that their child will turn into a sissy; it is the overwhelming fear of all American parents from the moment that they can understand language that they may be taken for a sissy ; and a very great deal of American speech and activity, so often misinterpreted by non -Americans, is designed solely to avert this damning judgement. Particularly. Self - confident Americans may say" I guess I'm just a sissy...", when they feel quite sure that they are not. When applied to adult males the term also implies sexual passivity. What is the tone of the passage?A. Objective.B. Subjective.C. Critical.D. Supportiv

单选题What has Althouse Bus Transportation been mainly aiming at?

单选题Silva issued a statement denying all knowledge of the affair.

单选题Although there were many {{U}}failures{{/U}} in his career as a writer, Alexander refused to give up, and eventually he gained national recognition.

单选题Loud noises can be annoying.A. hatefulB. painfulC. horrifyingD. irritating

单选题Jack was dismissed.A. firedB. finedC. exhaustedD. criticized

单选题The plane for Riode Janeiro will take off at 6.00 p. m.

单选题The organization was bold enough to face the press.

单选题The Iceman On a September day in 199], two Germans were climbing the mountains between Austria and Italy. High up on a mountain pass, they found the body of a man lying on the ice. At that height (10,499 feet, or 3,200 meters), the ice is usually permanent, but 1991 had been an especially warm year. The mountain ice had melted more than usual and so the body had come to the surface. It was lying face downward. The skeleton (骨架) was in perfect condition, except for a wound in the head. There was still skin on the bones and the remains of some clothes. The hands were still holding the wooden handle of an ax and on the feet there were very simple leather and cloth boots. Nearby was a pair of gloves made of tree bark (树皮) and a holder for arrows. Who was this man? How and when had he died? Everybody had a different answer to these questions. Some people thought that it was from this century, perhaps the body of a soldier who died in World War I, since several soldiers had already been found in the area. A Swiss woman believed it might be her father, who had died in those mountains twenty years before and whose body had never been found. The scientists who rushed to look at the body thought it was probably much older, maybe even a thousand years old. With modern dating techniques, the scientists soon learned that the Iceman was about 5,300 years old. Born in about 3300 B.C., he lived during the Bronze Age in Europe. At first, scientist thought he was probably a hunter who had died from an accident in the high mountains. More recent evidence, however, tells a different story. A new kind of X-ray shows an arrowhead still stuck in his shoulder. It left only a tiny hole in his skin, but it caused internal damage and bleeding. He almost certainly died from this wound, and not from the wound on the back of his head. This means that he was probably in some kind of a battle. It may have been part of a larger war or he may have been fighting bandits. He may even have been a bandit himself. By studying his clothes and tools, scientists have already learned a great deal from the Iceman about the times he lived in. We may never know the full story of how he died, but he has give us important clues to the history of those distant times.

单选题She was a puzzle. A. girl B. woman C. problem D. mystery

单选题 The Adjustment in Understanding of Man's Relation to the Physical Universe Nowadays the scattering of galaxies and the astounding abundance of stars are forcing those who ponder such matters to a further adjustment of their concept of the place and function of man in the material universe. In the history of the {{U}} {{U}} 1 {{/U}} {{/U}}human mind, with its increasing knowledge of the surrounding context, there must have been a time when the philosophers of the {{U}} {{U}} 2 {{/U}} {{/U}}tribes began to realize that the world was not simply centered on man himself. The geocentric concept, which accepted a universe centered on the earth, then became common {{U}} {{U}} 3 {{/U}} {{/U}}. The second adjustment in the understanding of man's relation to the physical universe was not generally acceptable {{U}} {{U}} 4 {{/U}} {{/U}}the sixteenth century. Copernican revolution soundly {{U}} {{U}} 5 {{/U}} {{/U}}the heliocentric concept, the theory of a universe {{U}} {{U}} 6 {{/U}} {{/U}}on the sun. Man is a stubborn adherent to official dogma; eventually, however, he accepted the sun as the center. Then, forty years ago, came the need for a third adjustment. This {{U}} {{U}} 7 {{/U}} {{/U}}has deeply exploded man's pride and {{U}} {{U}} 8 {{/U}} {{/U}}, for it has carried with it the knowledge of the appalling number of galaxies. The galactocentric universe {{U}} {{U}} 9 {{/U}} {{/U}}puts the earth and its life near the edge of one great galaxy in a universe of millions of galaxies. Man becomes peripheral among the billions of stars of his own Milky Way; and, according to the revelations of paleontology and geochemistry, he is {{U}} {{U}} 10 {{/U}} {{/U}}and apparently transient in the {{U}} {{U}} 11 {{/U}} {{/U}}of cosmic time. The downgrading of the earth and sun and the elevation of the galaxies is not the end of this {{U}} {{U}} 12 {{/U}} {{/U}}of scientific pilgrims through philosophic fields. The need for another {{U}} {{U}} 13 {{/U}} {{/U}}adjustment now {{U}} {{U}} 14 {{/U}} {{/U}}not wholly unexpected by scientists, {{U}} {{U}} 15 {{/U}} {{/U}}wholly the result of one or two scientific revelations. Our new problem concerns the spread of life throughout the universe. As unsolicited spokesmen for all the earthly organisms of land, sea, and air, we ask the thrilling question: Are we alone?

单选题Men Smell of Cheese and Women of Onions Little girls may be made of sugar and all things nice, but their armpits (腋部) 1 of onions. And while free of slug or snail odours, men"s armpits pack a 2 cheesy whiff. That"s the 3 of research in Switzerland that involved taking armpit sweat samples from 24 men and 25 women after he had 4 time in a sauna or ridden an exercise bike for 15 minutes. The researchers found marked 5 in the sweat from men and women. "Men smell of cheese, and women of grapefruit (葡萄柚) or onion," says Christian Starkenmann of Firmenich, a company in Geneva 6 researches flavors and perfumes for food and cosmetics companies. The team 7 that the women"s armpit sweat constrained relatively high levels of an odourless sulphur-containning compound—5 milligrams per milliliter of sweat versus 0.5 milligrams in men. When the researchers mixed this compound in the lab with bacteria commonly found in the armpit, the bugs turned it into a thiol (硫醇)—a previously discovered odour from armpits that is 8 to onion. "The more sulphur (硫) precursor we 9 , the more intense was the malodour (难闻的 气味，恶臭)," says Starkenmann, whose team"s results appear in Chemical Senses . Bacterial enzymes (酶) turn the otherwise odourless precursor 10 the malodour. The men, meanwhile, had relatively high levels of an odourless fatty acid which turned into a cheesy odour when 11 to the same types of bacteria. The balance of oniony to cheesy precursors in women"s sweat made it smell worse than men"s as rated by independent smell assessors. Nest; the team hope to develop new ingredients for deodorants that 12 the smells. "We could make inhibitors that neutralize the precursors, or block the bacterial enzymes that do the conversion," says Starkenmann. Some researchers are skeptical that gender is the main deciding factor, 13 that the patterns found in Swiss volunteers might not apply to other populations with different diets and genetic background. "Other factors 14 what you eat, what you wash with, what you wear and what genes you 15 ," says Tim Jacob of Cardiff University in the U.K.

单选题 Public and Private Schools in the United States Religious and private schools receive little or no support from public taxes in the United States, and, as a result, are usually somewhat expensive to {{U}} {{U}} 1 {{/U}} {{/U}}. The largest group of religious schools in America {{U}} {{U}} 2 {{/U}} {{/U}}by the Roman Catholic Church. While religious schools tend to be {{U}} {{U}} 3 {{/U}} {{/U}}expensive than private schools, there are usually some fees. When there is free education available to all children in the United States, why do people {{U}} {{U}} 4 {{/U}} {{/U}}money on private schools? Americans offer {{U}} {{U}} 5 {{/U}} {{/U}}great variety of reasons for doing so, including the desire of some parents to send their children to schools {{U}} {{U}} 6 {{/U}} {{/U}}classes tend to be smaller, or where religious instruction is included as part of the educational program, or because, {{U}} {{U}} 7 {{/U}} {{/U}}their opinion, the public schools in their area are not {{U}} {{U}} 8 {{/U}} {{/U}}high enough quality to meet their needs. Private schools in the United States {{U}} {{U}} 9 {{/U}} {{/U}}widely in size, quality, and in the kind of program that are offered to meet {{U}} {{U}} 10 {{/U}} {{/U}}of certain students. The degree {{U}} {{U}} 11 {{/U}} {{/U}}American parents are active in their children's schools is often {{U}} {{U}} 12 {{/U}} {{/U}}to people of other countries. Most schools have organizations {{U}} {{U}} 13 {{/U}} {{/U}}of both parents and teachers, usually called P.T.A. for Parent-Teacher Association. They meet together to {{U}} {{U}} 14 {{/U}} {{/U}}various matters concerning the school. Parents often give {{U}} {{U}} 15 {{/U}} {{/U}}time to help with classroom or after school activities.

单选题My father is a physician .

单选题Lateral Thinking Lateral thinking (迂回思维), first described by Edward de Bono in 1967, is just a few years older than Edward's son. You might imagine that Casper was raised to be an adventurous thinker, but de Bono name was so famous, Casper's parents worried that any time he would say something bright at school, his teachers might snap, "Where do you get that idea from?" "We had to be careful and not overdo it," Edward admits. Now Casper is at Oxford — which once looked unlikely because he is also slightly dyslexic (诵读困难). In fact, when he was applying to Oxford, none of his school teachers thought he had a chance. "So then we did several thinking sessions," his father says, "using my techniques and, when he went up for the exam, he did extremely well." Soon after, Edward de Bono decided to write his latest book, Teach Your Children How to Think, in which he transforms the thinking skills he developed for brain-storming businessmen into informal exercises for parents and children to share. Thinking is traditionally regarded as something executed in a logical sequence, and everybody knows that children aren't very logical. So isn't it an uphill battle, trying to teach them to think? "You know," Edward de Bono says, "if you examine people's thinking, it is quite unusual to find faults of logic. But the faults of perception are huge! Often we think ineffectively because we take too limited a view." Teach Your Child How to Think offers lessons in perception improvement, of clearly seeing the implications of something you are saying and of exploring the alternatives.

单选题It will absorb a large amount of money to decorate the office.