单选题Ultralight (超轻型的) airplanes are a recent development in aviation that provide what aviation enthusiasts have long been seeking: born of the marriage of the hang glider and the go-kart (轻型单座赛车) engine around 1974, when John Moody mounted a 12horsepower go-kart engine on his Icarus Ⅱ hang glider. Today's ultralights are not just hang gliders with engines; they are "air recreation vehicles. " Modern ultralight planes use snowmobile engines that let them cruise at about 40 miles per hour, climb at about 400 feet per minute, and carry combined payloads of pilot and fuel up to about 200 pounds, which is about equal to an ultralight plane's weight when empty. More than ten thousand ultralight planes were sold last year at prices ranging from $2,800 to $ 7,000. But the main reason for the increasing popularity of these aircraft is not that they are inexpensive, but that they are fun to fly. The modern ultralight plane would look very familiar to the earliest pioneers of aviation. Otto Lilienthal made more than 2,000 flights in Germany in the 1890's in what were actually hang gliders. Octave Chanute designed and built many early hang gliders. Augustus Herring, Chanute's assistant, used these gliders as models for a glider that he built for himself. On this glider, Herring installed a compressed-air motor and flew 267 feet in 1898. The Wright brothers' flyer was the grandfather of today's ultralight planes. The pilot sat right out in the open, just as in modern uhralights, and used controls that were much the same as those used in today's machines. Though most ultralight planes are used for pleasure flying, some are also used for crop dusting, aerial photography, and even military observation service. The likelihood is that further uses will be found for ultralight planes, but their greatest use will continue to be as air recreational vehicles.

单选题It is reported that the policemen are {{U}}pursuing{{/U}} the bank robbers in the country.

单选题Twenty years in prison (are) a ridiculously harsh penalty for an action (that) was, (after all), agreed upon by both people (involved).

单选题{{B}}Passage Five{{/B}} How many of today's ailments, or even illnesses, are purely psychological? And how far can these be alleviated by the use of drugs? For example a psychiatrist concerned mainly with the emotional problems of old people might improve their state of mind somewhat by the use of anti-depressants but he would not remove the root cause of their depression—the feeling of being useless, often unwanted and handicapped by failing physical powers. One of the most important controversies in medicine today is how far doctors, and particularly psychologists, should depend on the use of drugs for "curing" their patients. It is not merely that drugs may have been insufficiently tested and may reveal harmful side effects (as happened in the case of anti-sickness pills prescribed for expectant mothers) but the uneasiness of doctors who feel that they are treating the symptoms of a disease without removing the disease itself. On the other hand, some psychiatrists argue that in many cases (such as chronic depressive illness) it is impossible to get at the root of the illness while the patient is in a depressed state. Even prolonged psychiatric care may have no noticeable effect whereas some people can be lifted out of a depression by the use of drugs within a matter of weeks. These doctors feel not only that they have no right to withhold such treatment, but that the root cause of depression can be tackled better when the patient himself feels better. This controversy is concerned, however, with the serious psychological illnesses. It does not solve the problem of those whose headaches, indigestion, backache, etc. are due to "nerves". Commonly a busy family doctor will ascribe them to some physical cause and as a matter of routine prescribe a drug. Once again the symptoms are being cured rather than the disease itself. It may be true to say, as one doctor suggested recently, that over half of the cases that come to the ordinary doctor's attention are not purely physical ailments. If this is so, the situation is serious indeed.

单选题What lies in pieces around them represents, Uin effect/U, a unique private exhibition open to a lucky few.

单选题The Constitution guarantees that private homes will not be searched without a warrant.

单选题Man: Our play last night was a great success. Woman: Yes. But if Peter had remembered all his lines, his performance would have been more natural. Question: What does the woman mean?

单选题I'd like to take this opportunity to {{U}}extend{{/U}} my heart-felt gratitude to the host.

单选题A briefcase full of counterfeit money was found on the counter.

单选题The highest and best form of efficiency is the Uspontaneous/U cooperation of a free people.

单选题(Despite) the growth of (manufacturing) and other industries, the economy of the state of Texas (has) remained heavily (dependence) on oil and gas.A. DespiteB. manufacturingC. hasD. dependence

单选题Participants in the Shanghai Cooperation Forum______regional teamwork to promote investment and economic development.

单选题______ your work in case you've made any mistakes.

单选题{{B}}Passage Three{{/B}} Our culture has caused most Americans to assume not only that our language is universal but that the gestures we use are understood by everyone. We do not realize that waving good-bye is the way to summon a person from the Philippines to one's side, or that in Italy and some Latin-American countries, curling the finger to oneself is a sign of farewell. Those private citizens who sent packages to our troops occupying Germany after World War Ⅱ and marked the items GIFT to escape duty payments did not bother to find out that "gift" means poison in German. Moreover, we like to think of ourselves as friendly, yet we prefer to be at least 3 feet or an arm's length away from others. Latins and Middle Easterners like to come closer and touch, which makes Americans uncomfortable. Our linguistic (语言上的) and cultural blindness and the casualness with which we take notice of the developed tastes, gestures, customs and languages of other countries, are losing us friends, business and respect in the world. Even here in the United States, we make few concessions to the needs of foreign visitors. There are no information signs in four languages on our public buildings or monuments; we do not have multilingual (多语的) guided tours. Very few restaurant menus have translations, and multilingual waiters, bank clerks and policemen are rare. Our transportation systems have maps in English only and often we ourselves have difficulty understanding them. When we go abroad, we tend to cluster in hotels and restaurants where English is spoken. The attitudes and information we pick up are conditioned by those natives-usually the richer --who speak English. Our business deals, as well as the nation's diplomacy, are conducted through interpreters. For many years, America and Americans could get by with cultural blindness and linguistic ignorance. After all, America was the most powerful country of the free world, the distributor of needed funds and goods. But all that is past. American dollars no longer buy all good things, and we are slowly beginning to realize that our proper role in the world is changing. A 1979 Harris poll reported that 55 percent of Americans want this country to play a more significant role in world affairs , we want to have a hand in the important decisions of the next century, even though it may not always be the upper hand.

单选题When the heart breaks down, it beats irregularly or not at all. A bone can chip or snap. But when the complex network of neurons in our brain malfunctions, the result can be a near-endless variety and combinations of mental illnesses. It"s normal to sometimes be sad, happy, anxious, confused, forgetful or fearful, but when a person"s emotions, thoughts or behavior frequently trouble them, or disrupt their lives, they may be suffering from mental illness. According to the World Health Organization (WHO), about 450 million people worldwide are affected by mental, neurological or behavioral problems at any time. Among the best known and most common mental illnesses is depression—a prolonged, debilitating sadness, sometimes accompanied by a feeling of hopelessness and thoughts of suicide. Seasonal affective disorder is a type of depression that affects some people in the autumn and winter and is triggered by the shrinking hours of daylight and colder temperatures. Personality disorders are behaviour patterns that are destructive to the person themselves or those around them. In dissociative disorders, someone experiences a sudden change in consciousness or their concept of self. In dissociative amnesia (遗忘症), for example, the result is a loss of part or all of their memories. Anxiety disorders are characterized by powerful feelings of stress and physical signs of fear—sweating, a racing heart—due to some cue in the environment, or for no obvious reason at all. Madness has long been linked with genius. Many famous artists, writers and scientists have suffered from mental disorders, leading some to wonder if there is a link between these illnesses and creativity. The mathematician John Nash struggled with schizophrenia while he developed the theory that earned him a Nobel Prize. The artist Vincent Van Gogh, the composer Robert Schumann and the writer Fyodor Dostoevsky are said to have suffered from a range of mental disorders including hypergraphia, a compulsion to write—a sign perhaps their art emerged from an unrelenting urge to communicate. One possibility is that genes that predispose people to such devastating illnesses persist because when the syndromes are present in a milder form, this heightened creativity gives people an evolutionary advantage.

单选题A cup of whole milk provides {{U}}roughly{{/U}} one hundred sixty-six calories of energy.

单选题Unless the population growth stabilizes, environmentalists predict a worldwide starvation by the next decade.

单选题Woman: You sound terrible, Max. You'd better go home, gargle and get some rest. Man: Thank you. I think I'll take your advice. Question: What's probably wrong with Max?

单选题The State Department has issued a regulation abolishing the special Uprivileges/U for government officials.

单选题As a master's candidate, he was always Udiligent/U in his study and research.