单选题You'd rather not go to the picnic, ______ you?

单选题The attack is being seen as a deliberate attempt to______the peace talks.

单选题It would be a blessing for the human race if the mosquito could be eradicated.

单选题 Low-level slash-and-bum farming doesn't harm rainforest. On the contrary, it helps farmers and improves forest soils. This is the unorthodox view of a German soil scientist who has shown that burnt clearings in the Amazon, dating back more than 1,000 years, helped create patches of rich, fertile soil that farmers still benefit from today. Most rainforest soils are thin and poor because they lack minerals and because the heat and heavy rainfall destroy most organic matter in the soils within four years of it reaching the forest floor. This means topsoil contains few of the ingredients needed for long-term successful farming. But Bruno Glaser, a soil scientist of the University of Bayreuth, has studied unexpected patches of fertile soils in the central Amazon. These soils contain lots of organic matter. Glaser has shown that most of this fertile organic matter comes from " black carbon"—the organic particles from camp fires and charred wood left over from thousands of years of slash-and-bum farming." The soils, known as Terra Preta, contained up to 70 times more black carbon than the surrounding soil," says Glaser. Unburnt vegetation rots quickly, but black carbon persists in the soil for many centuries. Radiocarbon dating shows that the charred wood in Terra Preta soils is typically more than 1,000 years old. "Slash-and-burn farming can be good for soils provided it doesn't completely burn all the vegetation, and leaves behind charred wood," says Glaser. "It can be better than manure." Burning the forest just once can leave behind enough black carbon to keep the soil fertile for thousands of years. And rainforests easily regrow after small- scale clearing. Contrary to the conventional view that human activities damage the environment, Glaser says: "Black carbon combined with human wastes is responsible for the richness of Terra Preta soils." Terra Preta soils turn up in large patches all over the Amazon, where they are highly prized by farmers. All the patches fall within 500 square kilometers in the central Amazon. Glaser says the widespread presence of pottery confirms the soil's human origins. The findings add weight to the theory that large areas of the Amazon have recovered so well from past periods of agricultural use that the regrowth has been mistaken by generations of biologists for "virgin" forest. During the past decade, researchers have discovered hundreds of large earth works deep in the jungle. They are up to 20 meters high and cover up to a square kilometer. Glaser claims that these earth works, built between AD 400 and 1400, were at the heart of urban civilizations. Now it seems the richness of the Terra Preta soils may explain how such civilizations managed to feed themselves.

单选题He proved himself a ______ successor to the former Prime Minister.

单选题The decade of A the 1920" s was significant in Georgia"s history B because of the rapidity C withWhat agriculture D declined in the state.

单选题Most doctors of the Colonial period believed ______ was caused by an imbalance of humors in the body.

单选题Perhaps the most significant postwar trend was the decentralization of cities throughout the United States, ______ when massive highway-building programs permitted greater suburban growth.

单选题In the machinelike world of classical physics, the human intellect appears______, since the mechanical nature of classical physics does not______creative reasoning, the very ability that had made the formulation of classical principle possible.

单选题Passage 2 Every man is a philosopher. Every man has his own philosophy of life and his special view of the universe. Moreover, his philosophy is important, more important perhaps than he himself knows. It determines his treatment of friends and enemies, his conduct when alone and in society, his attitude towards his home, his work, and his country, his religious beliefs, his ethical standards, his social adjustment and his personal happiness. Nations, too, through the political or military party in power, have their philosophers of thought and action. Wars are waged and revolutions incited because of the clash Of ideologies, the conflict of philippics. It has always been so. World War II is but the latest and most dramatic illustration of the combustible nature of differences in social and political philosophy. Philosophy, says Plato, begins with wonder. We wonder about the destructive fury of earthquakes, floods, storms, drought, pestilence, famine, and fire, the mysteries of birth and death, pleasure and pain, change and permanence, cruelty and kindness, instincts and ideals, mind and body, the size of the universe and man's place in it. Our questions are endless. What is man? What is Nature? What is justice? What is duty? Alone among the animals man is concerned about his origin and end, about his purposes and goals, about the meaning of life and the nature of reality. He alone distinguishes between beauty and ugliness, good and evil, the better and the worse. He may be a member of the animal kingdom, but he is also a citizen of the world of ideas and values. Some of man's questions have had answers. Where the answer is clear, we call it science or art and move on to higher ground and a new vista of the world. Many of our questions, however, will never have final answers. Men will always discuss the nature of justice and right, the significance of evil, the art of government, the relation of mind and matter, the search for truth, the quest for happiness, the idea of God, and the meaning of reality. The human race has reflected so long and often on these problems that the same patterns of thought recur in almost every age. We should know what these thoughts are. We should know what answers have been suggested by those who have most influenced ancient and modern thought. We shall want to do our own thinking and find our own answers. It is, however, neither necessary nor advisable to travel alone. Others have helped dispel the darkness, and the light they have kindled may also illuminate our way.

单选题She ran back into the room to see ______ he ______ anything behind.

单选题That customer wanted to return the pens he bought because he said they ______ easily.

单选题There is no other man in history than Jefferson who ______ the ideas of democracy with such fullness, persuasiveness and logic.

单选题Passage Three In addition to urge to conform which we generate ourselves, there is the external pressure of the various formal and informal groups we belong to, the pressure to back their ideas and attitudes and to imitate their actions. Thus our urge to conform receives continuing, even daily reinforcement. To be sure, the intensity of the reinforcement, like the strength of the urge and the ability and inclination to withstand it, differs widely among individuals. Yet some pressure is present for everyone. And in one way or another, to some extent, everyone yields to it. It is possible that a new member of a temperance group might object the group's rigid insistence that all drinking of alcoholic beverages is wrong. He might even speak out, reminding them that occasional, moderate drinking is not harmful, that even the Bible speaks approvingly of it. But the group may quickly let him know that such ideas are unwelcome in their presence. Every time he forgets this, he will be made to feel uncomfortable. In time, if he values their companionship he will avoid expressing that point of view. He may even keep himself from thinking. This kind of pressure, whether spoken or unspoken, can be generated by any group, regardless of how liberal or conservative, formal or casual it may be. Friday night poker clubs, churches, political parties, committees, fraternities, unions. The teenage gang that steals automobile accessories may seem to have no taboos. But let one uneasy member remark that he is beginning to feel guilty about his crimes and their wrath will descend on him. Similarly, in high school and college, the crowd a student travels with has certain (usually unstate D) expectations for its members. If they drink or smoke, they will often make the member who does not do so feel that he doesn't fully belong. If a member does not share their views on sex, drugs, studying, cheating, or any other subject of importance to them, they will communicate their displeasure. The way they communicate, of course, may be more or less direct. They may tell him he'd better conform "or else". They may launch a teasing campaign against him. Or they may be even less obvious and leave him out of their activities for a few days until he asks what is wrong or decides for himself and resolves to behave more like them. The urge to conform on occasion conflicts with the tendency to resist change. If the group we are in advocates an idea or action that is new and strange to us, we can be torn between seeking their acceptance and maintaining the security of familiar ideas and behavior. In such cases, the way we tuna will depend on which tendency is stronger in us or which value we are more committed to. More often, —however, the two tendencies do not conflict but reinforce each other. For we tend to associate with those whose attitudes and actions are similar to our own.

单选题 In the sporting world today it is no longer professional athletes alone who are looking for ways to enhance their athletic performance. Many casual athletes are just as keen as the professionals to increase their competitiveness and to boost their levels of athletic achievement. One of the most common ways to perform at a higher level is to fill up on popular fitness foods, such as protein powders, power bars and fitness drinks. Performance foods, as they are often called, have become big business. As sales continue to increase, so do the expectations of those athletes who use them. Yet despite numerous claims, scientific facts and personal anecdotes, many fitness foods may offer little more than the promise of increased athletic performance. One of the most widely known aids used in sports circles, especially among weight lifters, is the protein power drink. Runners and other endurance athletes have adopted it for energy, stamina and extra protein to help promote muscle repair. But after years of study many experts are still unable to confirm if the body needs additional protein, especially since most people's daily food intake provides twice the required amount of protein. At one time, many athletes who competed in endurance sports such as distance running and competitive cycling stuffed themselves with energy bars crammed full of protein, vitamins, fibre and minerals. Many of these power-packed snack bars gained poor marks when it came to nutritional value. Nutritionists noted that as much as 50 per cent of the calories in these bars came from fat content, not the kind most sports people need and certainly not equal to the nutritional value of well-balanced meal. In recent years the most widely used sports aid is the glucose drink, a diluted mixture of glucose, sucrose, sodium and potassium. Several studies have shown that these types of products may do some good, especially to the endurance-sports person working out in warm weather and to people who perspire heavily. But for the average athlete who exercise lightly for short periods, the glucose drink is little more than a thirst quencher, as eating habits provide plenty of the fluids, salts. Proof isn't conclusive. Whatever the future holds for fitness foods, one thing is certain: the hopes and aspirations for them fall short of the desires of potential users. The best enhancement for athletic achievement remains simple high carbohydrate diets, low in fat and packed with nutrient and antioxidant rich grains, fruit and vegetables.

单选题It is not what your father is but whether you can do the work well ______ matters. A. which B. that C. what D. why

单选题He was so ______ in the TV program that he forgot to turn the oven off.

单选题No agreement was reached in the discussion as neither side would give way to______.

单选题Many literary detectives have pored over a great puzzle concerning the writer Marcel Proust: what happened in 1909? How did Contre Saint-Beuve, an essay attacking the methods of the critic Saint Beuve, turn into the start of the novel Remembrance of Things Past ? A recently published letter from Proust to the editor Vallette confirms that Fallois, the editor of the 1954 edition of Contre Saint-Beuve , made an essentially correct guess about the relationship of the essay to the novel. Fallois proposed that Proust had tried to begin a novel in 1908, abandoned it for what was to be a long demonstration of Saint-Beuve"s blindness to the real nature of great writing, found the essay giving rise to personal memories and fictional developments, and allowed these to take over in a steadily developing novel. Draft passages in Proust"s 1909 notebooks indicate that the transition from essay to novel began in Contre Saint-Beuve , when Proust introduced several examples to show the powerful influence that involuntary memory exerts over the creative imagination. In effect, in trying to demonstrate that the imagination is more profound and less submissive to the intellect than Saint-Beuve assumed, Proust elicited vital memories of his own and, finding subtle connections between them, began to amass the material for Remembrance . By August, Proust was writing to Vallette, informing him of his intention to develop the material as a novel. Maurice Bardeche, in Marcel Proust , romancier, has shown the importance in the drafts of Remembrance of spontaneous and apparently random associations of Proust"s subconscious. As incidents and reflections occurred to Proust, he continually inserted new passages altering and expanding his narrative. But he found it difficult to control the drift of his inspiration. The very richness and complexity of the meaningful relationships that kept presenting and rearranging themselves on all levels, from abstract intelligence to profound dreamy feelings, made it difficult for Proust to set them out coherently. The beginning of control came when he saw how to connect the beginning and the end of his novel. Intrigued by Proust"s claim that he had "begun and finished" Remembrance at the same time, Henri Bonnet discovered that parts of Remembrance"s last book were actually started in 1909. Already in that year, Proust had drafted descriptions of his novel"s characters in their old age that would appear in the final book of Remembrance , where the permanence of art is set against the ravages of time. The letter to Vallette, drafts of the essay and novel, and Bonnet"s researches establish in broad outline the process by which Proust generated his novel out of the ruins of his essay. But those of us who hoped, with Kolb, that Kolb"s newly published complete edition of Proust"s correspondence for 1909 would document the process in greater detail are disappointed. For until Proust was confident that he was at last in sight of a viable structure for Remembrance, he told few correspondents that he was producing anything more ambitious than Contre Saint-Beuve .

单选题Please explain in your own words why stress can cause a vicious academic cycle. ( This question is based on Passage 4)