研究生类
公务员类
工程类
语言类
金融会计类
计算机类
医学类
研究生类
专业技术资格
职业技能资格
学历类
党建思政类
博士研究生考试
公共课
专业课
全国联考
同等学历申硕考试
博士研究生考试
考博英语
考博英语
单选题The chimney vomited a cloud of smoke.
进入题库练习
单选题He ______ himself bitterly for his miserable behavior that evening. A. repealed B. resented C. replayed D. reproached
进入题库练习
单选题"De you mind ______?" "Go ahead. I don't mind."
进入题库练习
单选题 Directions: In this section you will read four passages. Each one is followed by several questions about it. For questions, you are to choose the one best answer A, B, C, or D to each question.{{B}}Passage One{{/B}} In a recent book entitled The Psychic Life of Insects, Professor Bouvier says that we must be careful not to credit the little winged fellows with intelligence when they behave in what seems like an intelligent manner. They may be only reacting. I would like to confront the professor with an instance of reasoning power on the part of an insect which cannot be explained away in any other manner. During the summer of 1899, while I was at work on my doctoral thesis, we kept a female wasp at our cottage. It was more like a child of our own than a wasp, except that it looked more like a wasp than a child of our own. That was one of the ways we told the difference. It was still a young wasp when we got it (thirteen or fourteen years old) and for some time we could not get it to eat or drink, it was so shy. Since it was a female we decided to call it Miriam, but soon the children's nickname for it-- " Pudge" --became a fixture, and "Pudge" it was from that time on. One evening I had been working late in my laboratory fooling around with some gin and other chemicals, and in leaving the room I tripped over a nine of diamonds which someone had left lying on the floor and knocked over my card index which contained the names and addresses of all the larvae worth knowing in North America. The cards went everywhere. I was too tired to stop to pick them up that night, and went sobbing to bed, just as mad as I could be. As I went, however, I noticed the wasp was flying about in circles over the scattered cards. "Maybe Pudge will pick them up," I said half laughingly to myself, never thinking for one moment that such would be the case. When I came down the next morning Pudge was still asleep in her box, evidently tired out. And well she might have been. For there on the floor lay the cards scattered all about just as I had left them the night before. The faithful little insect had buzzed about all night trying to come to some decision about picking them up and arranging them in the boxes for me, and then had figured out for herself that, as she knew practically nothing of larvae of any sort except wasp larvae, she would probably make more of a mess of rearranging them than if she had left them on the floor for me to fix. It was just too much for her to tackle, and, discouraged, she went over and lay down in her box, where she cried herself to sleep. If this is not an answer to Professor Bouvier's statement, I do not know what is.
进入题库练习
单选题The magician made us think he cut the girl into pieces but it was merely an ______. A. illusion B. impression C. image D. illumination
进入题库练习
单选题According to psychoanalysis, a person's attention is attracted ______ by the intensity of different signals ______ by their context, significance, and information content.
进入题库练习
单选题
进入题库练习
单选题The brain centers that process numbers seem to be different for exact and______calculations.
进入题库练习
单选题 Think of the ocean on a calm day. Ignoring the rise and fall of the waves, you might imagine the surface was dead flat the whole way across. You'd be wrong. Hills and valleys are as much as a feature of the sea as the land, although on a much smaller scale. These undulations have a variety of causes. Tides, currents, eddies, winds, river flow and changes in salinity and temperature push the sea level up in some places and down in others by as much as 2 meters. Ever tried swimming uphill? How do we map these oceanic hills and valleys? First, we need to know what the planet would look like without them. This is where the geoid (大地水准面) comes in. It is a surface where the Earth's gravitational potential is equal and which best fits the global mean sea level. It is approximately an ellipsoid, though uneven distribution of mass within the Earth means that it can vary from this ideal by up to 150 meters. The geoid represents the shape the sea surface would be if the oceans were net moving and affected only by gravity. Thus it can be used as a reference to measure any deviations in the ocean surface height that aren't caused by gravity—the hills and valleys, for instance, or any regional increase in sea level. So how do you measure the geoid and the ocean's irregular topography? It's complicated. Geophysicists calculate the geoid using data on variation in gravitational acceleration from several dozen satellites. The hills and valleys of the oceans are all very interesting, but can the geoid tell us anything more significant about the state of the planet? It certainly can. Knowing accurately where the geoid lies and how the Ocean surface deviates from it will help meteorologists spot changes in Ocean currents associated with climate change. The circumpolar current around Antarctic is one they are particularly interested in. It can also predict local climate variations produced by events such as El Nino, El Nino keeps warm water that would normally move westwards close to the coast of South America, deprives Southeast Asia of its monsoon rains, and increases rainfall on the west coast of the Ametlca. Since temperature changes cause changes in sea level, geoid-watchers should be able to prepare us before it strikes.
进入题库练习
单选题Hitler sought to {{U}}annihilate{{/U}} resistance movements throughout Europe.
进入题库练习
单选题
进入题库练习
单选题The editors said they must report to the world how Beijing has ______ pollution and improved the quality of the environment.
进入题库练习
单选题Most readers underestimate the amount of rewriting it usually takes to produce a spontaneous reading. This is a great disadvantage to the student writer, who sees only a finished product and never watches the craftsman who takes the necessary step back, studies the work carefully, returns to the task, steps back, returns, steps back, again and again. Anthony Burgess, one of the most productive writers in the English speaking countries, admits, "I might revise a page twenty times." Ronald Dahl, the popular children"s writer, states, "By the time I"m nearing the end of a story, the first part will have been reread and changed and corrected at least 150 times...Good writing is essentially rewriting. I am positive of this." Rewriting isn"t something that ought to be done. It is simply something that most writers find they have to do to discover what they have to say and how to say it. It is a condition of the writer"s life. There are, however, a few writers who do little formal rewriting, primarily because they have the capacity and experience to create and review a large number of invisible drafts in their minds before they approach the page. And some writers slowly produce finished pages, performing all the tasks of revision, page by page. But it is still possible to see the sequence followed by most writers most of the time in rereading their own work. Most writers can scan their draft first, reading as quickly as possible to catch the larger problems of subject and form, then move in closer and closer as they read and write, reread and rewrite.
进入题库练习
单选题
进入题库练习
单选题The view from the 23rd floor of the sleek tower on Barcelona's Avenida Diagonal ______ opaquely as summer smog oozes across the Olympic landscape below.
进入题库练习
单选题The programme aims to make the country ______ in food and to cut energy imports. A. self-confident B. self-sufficient C. self-satisfied D. self-restrained
进入题库练习
单选题Scientists researching hypnosis have uncovered evidence that counters some of the skepticism about the technique. One skeptical hypothesis is that hypnosis may be the product of "vivid imagination", a now discredited charge stemming from the observation that many people who are hypnotizable can be led to experience compellingly realistic auditory and visual hallucinations. Nothing that an auditory hallucination and the act of imagining a sound are both self-generated and that, like real hearing, a hallucination is experienced as the product of an external source, Henry Szechtman used PET(positron emission tomography)to image the brain activity of hypnotized subjects invited to imagine a scenario and then experiencing a hallucination. By monitoring regional blood flow in areas activated during both hearing and auditory hallucination but not during simple imagining, the investigators sought to determine where in the brain a hallucinated sound is mistakenly "tagged" as authentic and originating in the outside world. Szechtman imaged the brain activity of eight very hypnotizable subjects who had been prescreened for their ability to hallucinate under hypnosis. During the session, the subjects were under hypnosis and lay in the PET scanner with their brain activity being monitored under four conditions: at rest;while hearing an audiotape of a voice, while imagining hearing the voice again;and during the auditory hallucination they experienced after being informed that the tape was playing once more, although it was not. The tests suggested that a region of the brain called the right anterior cingulate cortex was just as active while the volunteers were hallucinating as it was while they were actually hearing the stimulus. In contrast, that brain area remained dormant while the subjects were imagining that they heard the stimulus. The second major objection raised by critics argues that hypnosis' ability to blunt pain results from either simple relaxation or a placebo response. McGlashan established that while hypnosis was only as effective in reducing pain as a sugar pill for poorly hypnotizable people, highly hypnotizable subjects benefited three times more from hypnosis than from the placebo. In response to these successes, Rainville devised experiments to determine which brain structures are involved in pain relief during hypnosis, attempting to locate the brain structures associated with the suffering component of pain, as distinct from its sensory aspects. Using PET, he and other scientists found that hypnosis reduced the activity of the anterior cingulate cortex—an area known to be involved in pain—but did not affect the activity of the somatosensory cortex, where the sensations of pain are processed. Despite the value of these findings, the mechanisms underlying hypnotic pain relief are still poorly understood. The model favored by most researchers is that the analgesic effect of hypnosis occurs in higher brain centers than those involved in registering the painful sensation, accounting for the fact that most autonomic responses that routinely accompany pain—such as increased heart rate — are relatively unaffected by hypnotic suggestions of analgesia.
进入题库练习
单选题
进入题库练习
单选题Pioneer men and women endured terrible hardships, and ______. A. neither did the children B. so do their children C. also the children D. so did their children
进入题库练习
单选题One of the youngest independent countries in the Western Hemisphere, Trinidad and Tobago, became a nation on August 31, 1962. For a long time this nation has attracted tourists——it is the home of calypso music and limbo dancing——and in recent years its healthy economy has attracted investors as well. Trinidad and Tobago is a single country composed of two islands.. Trinidad, with the majority of the country's 900,000 inhabitants, is a rectangle of roughly fifty by forty miles. Tobago, nineteen miles to the north, is smaller and has a population of about 35,000. Situated at the end of the long chain of Windward and Leeward Islands, Trinidad is at one point only seven miles off the coast of Venezuela. Its geology, flora, and fauna are similar to those of the South American mainland. Like Venezuela, the backbone of Trinidad and Tobago's economy is petroleum and its first colonists were Spaniards. Three mountain ranges, with summits of up to 3,000 feet, cross Trinidad from east to west, while Tobago is a relatively flat coral island, rimmed with fine beaches. The broad plains between Trinidad's mountain ranges are dominated by vast fields of sugar cane that present a symmetrical green pattern when seen from the air. A closer inspection reveals the coconut plantations along the coast and the profusion of brilliant red and yellow flowers of various species that are found all over the island. Houses on both islands tend to be light-colored, with an open style of architecture, in many cases with open space under the entire dwelling. Port-of-Spain, the capital, is a bustling modern city where the pulse of the people reflects Britist, Spanish, and East Indian influences.
进入题库练习