单选题The artist spent years on his monumental painting, which covered the whole roof of the church, the biggest in the country. A. archaic B. sentimental C. outstanding D. entire

单选题 Questions 84-90 are based on the following passage. Imagine a society in which cash no longer exists. Instead "cash" is electronic, as in bankcard systems. Currency and coin are abandoned. The immediate benefits would be profound and fundamental. Theft of cash would become impossible. Bank robberies and cash-register robberies would simply cease to occur. Attacks on shopkeepers, taxi drivers, and cashiers would all end. Purse snatchings would become a thing of the past. Urban streets would become safer. Retail shops in once-dangerous areas could operate in safety. Security costs and insurance rates would fall. Property values would rise. Neighborhoods would improve. Drug traffickers and their clients, burglars and receivers of stolen property, arsonists for hire, and bribe-takers would no longer have the advantage of using untraceable currency. Electronic "money" would leave incriminating wails of data, resulting in more arrests and convictions. These prosecutions, in turn, would inhibit further crimes. The impact of the monetary change on underground economies would be nearly as dramatic as the effect on crime. In the United States, the underground economy is estimated at between 10% and 28% of the gross national product. Internal Revenue Service (IRS) researches suggest that almost all hidden labor is paid in currency. In a society devoid of physical money, a change from cash to recorded electronic money would be accompanied by a flow of previously unpaid income-tax revenues running in the tens of billions of dollars. As a result, income-tax rates could be lowered and the national debt reduced. Cash has been the root of much social and economic evil. The emergence of electronic funds-transfer technology makes it possible to change the nature of money and to divorce it from evil. Eighty percent of Americans regularly use credit cards. The development of a federal system to handle the country' s 300 billion annual cash transactions in the United States electronically is within reach. A national electronic-money system would operate as debit-card system. Each individual's "money" would be held in his money-system account. A transaction would effect an instant transfer of "money" from his account to that of another account holder. The principal differences between a national electronic-money system and commercial bank-card systems would be: the money system would be federally operated; payment would constitute "legal tender"; system-account holders would be able to receive as well as pay out funds by use of their accounts; and funds would be transferable between private-account holders as well as between merchants and private-account holders. Only cash would be supplanted by electronic money. The use of checks, drafts, money orders, traveler's checks, cashier's checks, as well as letters of credit, acceptances, and other financial instruments would remain in regular use. Credit card and automatic-teller-machine systems (ATMs) would not necessarily change, although you could no longer obtain cash at ATMs.

单选题Much of Asia is in hot climates ______ chicken and pork are much more popular than beef.

单选题In parts of the Arctic, the land grades into the land fast ice so imperceptibly that you can walk off the coast and not know you re over the hidden sea.

单选题Her face is a curious misture: the soft dreamy eyes contrast so sharply with the firm, I almost said, hard little mouth. A. I have almost said B. I had almost said C. I would almost say D. I should have said

单选题The proponents of recombinant DNA research have decided to ______ federal regulation of their work; they hope that by making this compromise they can forestall proposed state and local controls that might be even stiffer.

单选题The president says that it was high time they showed their ______ on those political issues. A. head B. teeth C. hand D. arm

单选题The five ______ nations—Finland, Sweden, Denmark, Norway and Iceland—called on the European Union Monday to impose a tighter limit on the intensity of sunbathing.

单选题To weaken the damage for earthquakes, scientists are working on ways to enable accurate prediction.

单选题Although most of us think of the brain as a single framework, it is actually divided into two halves.

单选题On the part of an average sleeper, there ______ of sleep in cycles.

单选题Be was interested only in the story and skipped all those passages of landscape description.

单选题He remained calm in the face of the impending danger.

单选题At last John Smith chose to step down as the company's chief executive and return to his roots in software research. A. resign B. remove C. retire D. replace

单选题That university has produced a large number of social celebrities, including four Presidents and three Speakers.

单选题The use of exposed iron occurred mainly in the new building types ______ by the Industrial Revolution: in factories, warehouses, commercial offices, exhibition halls, and railroad stations, where its practical advantages far outweighed its lack of status.

单选题It is common practice for students to take the initiatives to get contacts with business bodies and find a job before graduation, and the efforts of which are mostly time-consuming and sometimes ______ some unhealthy social tendencies. A. foster B. furnish C. nurish D. cultivate

单选题The meridians of longitude are imaginary great circles drawn from pole to pole around the earth. By international agreement, the meridian of longitude passing through Greenwich, England, I numbered zero. The earth is divided into 360 degrees, and the meridians are numbered east and west from Greenwich. There are 180 degrees of longitude east of Greenwich and 180 degrees in the westerly direction. New York has a longitude of 74 degrees west which means it lies on the 74th meridian west of Greenwich. Since the sun appears to travel around the earth in 24 hours, it will move 360/24 or 15 degress in one hour. This reasoning can be used by navigators to determine their longitude. Image that we have set sail from Greenwich, England, after having set a very accurate clock, or chronometer, to the local Greenwich time. As we travel westward toward New York, we notice that the sun is going "slower" than our chronometer. At the time that our timepiece reads 12 o"clock, the sun has not quite reached the zenith. As a matter of fact, when our clock reads noon, what it really means is that it"s noon in Greenwich, England. Our clock continues to tell us the time, not at our present location, but at Greenwich. Let us wait until the sun is directly overhead (noon oat our location) and then read the time on our clock. Suppose it reads I o"clock. This means that there is one hour"s difference in time between our longitude and that of Greenwich. As we mentioned earlier, this corresponds to exactly 15 degrees of longitude, so our longitude must be 15 degrees west. The world is divided into 24 time zones, and each zone corresponds to 15 degrees of longitude. New York is approximately 5 time zones west of Greenwich, so the time difference must be about 5 hours. By maintaining chronometers on Greenwich time, ships can determine their longitude on any sunny day by merely noting the difference in hours between Greenwich time and local sun time and multiplying this difference by 15 degrees. Of course, longitude gives only half of the information needed to determine our precise location. We must also know our latitude, which tell us how far we are north or south of the equator. The Equator is the zero line for the measurement of latitude. Circles are drawn parallel to the Equator to indicate other values of latitude. There are 90 degrees of south latitude. In the Northern Hemisphere, there is a star called Polaris almost directly over the North Pole. This makes it possible to determine the latitude of a given point by setting our sextant to measure the angle between Polaris, the North Star, and the Horizon. Mathematicians tell us that this angle is equal to the attitude at the point in question. To get an idea of our location, therefore, we need to know the local time, Greenwich time, and the angle between Polaris and the horizon.

单选题The environmental balance among ecological communities is exceedingly complex.

单选题Hunters have almost exterminated many of the larger animals while farmers destroyed many smaller animals. A. wounded B. reduced C. killed D. trapped