单选题His plan was ______ by the committee. A. rejected B. dejected C. objected D. projected

单选题Proper clothes ______ for much in business. That' s why you see most business people dress formally.

单选题Sport was integral to the national and local press, TV and, to a diminishing ______, to radio. A. extent B. scope C. scale D. range

单选题One of the roles which science plays is that of ______ superstition.

单选题Passage 3 In economics, demand implies something slightly different from the common meaning of the term. The layman, for example, often used the term to mean the amount that is demanded of an item. Thus, if the price were to decrease and individuals wanted more of the item, it is commonly said that demand increases. To an economist, demand is a relationship between a series of prices and a series of corresponding quantities that are demanded at these prices. If one roads the previous sentences carefully, it should become apparent that them is a distinction between the quantity demanded and demand. This distinction is often a point of confusion and we all should be aware of and understand the difference between these two items. We repeat, therefore, that demand is a relationship between price and quantities demanded, and therefore suggests the effect of one (e.g., price) on the other (e.g. quantity demanded) . Therefore, knowledge of the demand for a product enables one to predict how much more of a product will be purchased if price decreases. But the increase in quantity demanded does not mean demand has increased, since the relationship between price and quantity (i.e., the demand for the product) has not changed. Demand shifts when there is a change in income, expectations, tastes, etc., such that a different quantity of the product is demanded at the same price. In almost all cases, a consumer wants more of an item if the price decreases. This relationship between price and quantity demanded is so strong that it is referred to as the "law of demand". This "law" can be explained by the income and substitution effects. The income effect occurs because price increases reduce the purchasing power of the individual and, thus, the quantity demanded of goods must decrease. The substitution effect reflects the consumer's desire to get the "best buy". Accordingly, if the price of product A increases, the individual will tend to substitute another product and purchase less of goods A. The negative correlation between price and quantity demanded is also explained by the law of diminishing marginal utility. According to this law, the additional utility the consumer gains from consuming a product decreases as successively more units of the product are consumed. Because the additional units yield less utility or satisfaction, the consumer is willing to purchase more only if the price of the product decreases. Economists distinguish between individual and market demand. As the term implies, individual demand concerns the individual consumer and illustrate the quantities that individuals demand at different prices. Market demand includes the demand of all individuals for a particular goods and is found by summing the quantities demanded by all individuals at the various prices. The other side of the price system is supply. As in the case of demand, supply is a relationship between a series of prices and the associated quantities supplied. It is assumed that as price increases the individual or firm will supply greater quantities of a product. There is a positive correlation between quantity supplied and product price. Economists also distinguish between a change in supply and quantity supplied. The distinction is similar to the one made with respect to demand. Also, as in the case of demand, economists distinguish between individual firm supply and market supply, which is the summation of individual supply. Taken together, supply and demand yield equilibrium of price and quantity. Equilibrium is a state of stability, with balanced forces in which prices and quantity will remain constant. Moreover, there are forces in the market that will act to establish equilibrium if changes in demand or supply create disequilibrium. For example, if prices are above equilibrium, the quantity supplied exceeds quantity demanded and surpluses occur that have a downward pressure on prices. These pressures will persist until equilibrium is established. If prices are below equilibrium, the product will become scare and there will be an upward pressure on price.

单选题The patient was quite beyond the possibility of quick______.

单选题Go and see what your mother is ______ now. A. for B. at C. about D. busy

单选题Examining bottles of wine is hard work because ______.

单选题But (as) a historian. Graves should be aware that James Clerk Maxwell's brilliant insight about electromagnetism--the guess that visible light is only one small slice of the spectrum of (electromagnetic) energy, a guess that forms the basis (for) electronics technology—(is) an intuitive leap into the unknown.

单选题When the air in a certain space is squeezed to occupy a smaller space, the air is said to be ______. A. commenced B. compressed C. compromised D. compensated

单选题1 Even today, when air and road travel has made Africa so readily accessible to Europeans and Americans, there are innumerable aspects of African life which tend to take one by surprise. The unfamiliar lies hidden everywhere, and the presence of Western culture seems merely to emphasize this unfamiliarity. Basically, the essence of our reaction to the strange, the unfamiliar, is a sense of fear. Every country contains landscapes that arouse unease—whether it be some remote Alpine valley, the wild lavender fields of Upper Province, or a lonely Norwegian fjord at twilight. But in my own experience West Africa contains more weird and eerie regions—rainforest, mangrove swamp, parched plains of red earth—than any other place that I have seen. It is not only in the foreigner that these land- scapes evoke fear. A large part of all old African religions is devoted to soothing the un- known and the unseen—evil spirits which live in a particular tree or a particular rock, a thousand varieties of ghosts and witches, the ever-present spirits of dead ancestors or rela- tives. I have myself been kept awake at night in Calabar by a friend from Lagos who was convinced that the witches of the east were out to get him, or that he was about to be kid- napped and eaten. During four and a half hours in a canoe along the creeks of the Niger delta, gliding over the still and colorless water beneath an equally still and colorless but burn- ing sky, I, too, have experienced a sense of fear, or at least a sense of awe. Except for the ticking of the little outboard engine the silence was complete. On either hand stretched the silver-white swamps of mangrove, seeming, with their awkward exposed roots, to be standing knee-deep in the water. Where the creek narrowed you could peer deep into these thickets of mangroves--vistas secret, interminable and somehow meaningless. There was no sign of life except for the shrill screech of some unseen bird. I was on my way to the ancient slaving port of Bonny, which we reached in late afternoon. Scrambling up some derelict stone steps (slithery with slime and which had managed to detach themselves from the landing-stage so that you had to jump a two-foot gap to reach wet land), I found myself in an area of black mud and tumbled blocks of stone.

单选题I ignored an old woman who asked me for money in the street yesterday and it's been on my ______ ever since. A. morality B. conscience C. morale D. rationale

单选题Meantime, road construction is ______ on the site of a proposed Tuman River Triangle.

单选题A balance used for weighing drugs or jewels must be a ______ instrument, but this would be quite unsuitable for weighing coal, sand or blocks of stone.

单选题Out of ______ revenge, he did his worst to blacken her character and rain her reputation.

单选题{{B}}Directions:{{/B}} In this section you will read four passages. Each one is followed by several questions about it. For questions 36～55, you are to choose the one best answer A, B, C, or D to each question. Then blacken your answer in the corresponding space on your Answer Sheet.{{B}}Passage One{{/B}} Sound moves from its source to the ear by wave like fluctuations in air pressure, something like the peaks and troughs or the lowest point of ocean waves. One way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noise maker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted--each peak is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the highest and lowest points of the noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti-sound just enough to cause complete silence. The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

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单选题The ______ of the occasion was spoiled when she fell down the steps.