单选题I was in some doubt as to whether the Corporal had __________ us accidentally on his way out of the town or if he'd been deliberately tasked.

单选题 In 1998 consumers could purchase virtually anything over the Internet. Books, compact discs, and even stocks were available from World Wide Web sites that seemed to spring up almost daily. A few years earlier, some people had predicted that consumers accustomed to shopping in stores would be reluctant to buy things that they could not see or touch in person. For a growing number of time-starved consumers, however, shopping from their home computer was proving to be a convenient alternative to driving to the store. A research estimated that in 1998 U. S. consumers would purchase $7.3 billion of goods over the Internet, double the 1997 total. Finding a bargain was getting easier, owing to the rise of online auctions and Web sites that did comparison shopping on the Internet for the best deal. For all the consumer interest, retailing in cyberspace was still a largely unprofitable business, however. Internet pioneer Amazon.com, which began selling books in 1995 and later branched into recorded music and videos, posted revenue of $153.7million in the third quarter, up from $37.9 million in the same period of 1997. Overall, however, the company's loss widened to $45.2 million from $9.6 million, and analysts did not expect the company to turn a profit until 2003. Despite the great loss, Amazon. com had a stock market value of many billions, reflecting investors' optimism about the future of the industry. Internet retailing appealed to investors because it provided an efficient means for reaching millions of consumers without having the cost of operating conventional stores with their armies of salespeople. Selling online carried its own risks, however. With so many companies competing for consumers' attention, price competition was intense and profit margins thin or nonexistent. One video retailer sold the hit movie Titanic for $9.99, undercutting (削价) the $19.99 suggested retail price and losing about $6 on each copy sold. With Internet retailing still in its initial stage, companies seemed willing to absorb such losses in an attempt to establish a dominant market position.

单选题The findings of the two studies contradict each other, though both groups of scientists have used the same method.

单选题Including talking books in their collections is a good example of____.

单选题Every country has its heroes. They may be soldiers or sports people, doctors or film stars. We admire them for their courage, their strength, their devotion to duty or their talent. Their example inspires us to live better, to work harder. Terry Fox was a young student who loved life and who loved sports. When he was just 18 years old a terrible tragedy occurred : his right leg had to be cut off because of cancer. Such an experience would have destroyed a weaker person—but Terry Fox was a fighter. He refused to give up. Instead, while he was recovering from the operation, an idea slowly formed in his mind. He decided he would run across Canada—in order to raise money for cancer research. Slowly and carefully, he began to train. Every step was extremely painful, but he insisted, increasing the distance covered day by day. Sixteen months later, in the spring of 1980, he was ready for the long journey across Canada—his Marathon of Hope. it was a time of inspiration and heartbreaking emotion. Through television, every home saw his distinctive style of running—a kind of half-hop and half-run. Thousands of people lined the route to encourage him and to wish him well. They also gave money to fight cancer. Then, on September 1st, 1980, after 143 days and more than 5000 kilometers completed, everything came tragically to an end. Terry had to stop. He lived on for another nine months and died on June 28th,1981. He was almost 23.

单选题When I was still an architecture student, a teacher told me, "We learn more from buildings that fall down than from buildings that stand up. " What he meant was that construction is as much the result of experience as of theory. Although structural design follows established formulas, the actual performance of a building is complicated by the passage of time, the behavior of users, the natural elements—and unnatural events. All are difficult to simulate. Buildings, unlike cars, can't be crash-tested. The first important lesson of the World Trade Center collapse is that tall buildings can withstand the impact of a large jetliner. The twin towers were supported by 59 perimeter columns on each side. Although about 30 of these columns, extending from four to six floors, were destroyed in each building by the impact, initially both towers remained standing. Even so, the death toll(代价)was appalling—2,245 people lost their lives. I was once asked, how tall buildings should be designed given what we'd learned from the World Trade Center collapse. My answer was,"Lower. " The question of when a tall building becomes unsafe is easy to answer. Common aerial fire-fighting ladders in use today are 100 feet high and can reach to about the 10th floor, so fires in buildings up to 10 stories high can be fought from the exterior(外部). Fighting fires and evacuating occupants above that height depend on fire stairs. The taller the building, the longer it will take for firefighters to climb to the scene of the fire. So the simple answer to the safety question is "Lower than 10 stories. " Then why don't cities impose lower height limits? A 60-story office building does not have six times as much rentable space as a 10-story building. However, all things being equal, such a building will produce four times more revenue and four times more in property taxes. So cutting building heights would mean cutting city budgets. The most important lesson of the World Trade Center collapse is not that we should stop building tall buildings but that we have misjudged their cost. We did the same thing when we underestimated the cost of hurtling along a highway in a steel box at 70 miles per hour. It took many years before seat belts, air bags, radial tires, and antilock brakes became commonplace. At first, cars simply were too slow to warrant concern. Later, manufacturers resisted these expensive devices, arguing that consumers would not pay for safety. Now we do—willingly.

单选题What you should say in your speech is entirely ______ you.

单选题The course (normally) attracts twenty students (per year), (half of which) will be (from) overseas.

单选题The police accused him of setting fire to the building but he denied______in the area on the night of the fire.(南京大学2007年试题)

单选题Having rooms in which to study will not______, we must also have the time to use them.

单选题Many people find home gardening ______.

单选题Once ______, this power station will supply all the neighbouring towns and villages with electricity.

单选题These veterans still remember the Urigorous/U discipline and hard training in these camps.

单选题Federal Reserve System, central banking system of the United States, popularly called the Fed. A central bank serves as the banker to both the banking community and the government; it also issues the national currency, conducts monetary policy, and plays a major role in supervision and regulation of banks and bank holding companies. In the U.S. these functions are the responsibilities of key officials of the Federal Reserve System: the Board of Governors, located in Washington, D.C., and the top officers of the 12 district Federal Reserve banks, located throughout the nation. The Fed's actions, described below, generally have a significant effect on the U.S. interest rates and, subsequently, on stock, bond, and other financial markets. The Federal Reserve's basic powers are concentrated in the Board of Governors, which is paramount in all policy issues concerning bank regulation and supervision and in most aspects of monetary control. The board enunciates the Fed's policies on both monetary and banking matters. Because the board is not an operating agency, most of the day-to-day implementation of policies decisions is left to the district Federal Reserve banks, stock in which is owned by the commercial banks that are members of the Federal Reserve System. Ownership in this instance, however, does not imply control; the Board of Governors and the heads of the Reserve banks orient their policies to the public interest rather than to the benefit of the private banking system. The U.S. banking system's regulatory apparatus is complex; the authority of the Federal Reserve is shared in some instances for example, in mergers or the examination of banks with other federal agencies such as the Comptroller of the Currency and the Federal Deposit Insurance Cooperation (FDIC). In the critical area of regulating the nation's money supply in accordance with national economic goals, however, the Federal Reserve is independent within the government. Income and expenditures of the Federal Reserve banks and of the Board of Governors are not subject to the congressional appropriation process; the Federal Reserve is subject to the congressional appropriation process; the Federal Reserve is self-financing. Its income ($20.2 billion in 1992) comes mainly from Reserve bank holdings of income-earning securities, primarily those of the U.S. government. Outlays ($1.5 billion in 1992) are mostly for operational expenses in providing services to the government and for expenditures connected with regulation and monetary policy. In 1992 the Federal Reserve returned $16.8 billion in earnings to the U.S. Treasury.

单选题Which language does Mary speak well?

单选题 {{B}}Questions 26-30 are based on the following passage:{{/B}} {{B}}　　　　　　　　　　　　　　　　　　Help Wanted Ad{{/B}}Outstanding opportunity with local real estate corporation. Requires strong backgroundin real estate, financing. Some legal training helpful. Prefer candidate with M. A. and two ormore years of successful real estate experience. Broker's license required. Salary range$ 50,000-$ 80,000 yearly in accordance with education and experience. Begin immediately.Interviews will be conducted Tuesday and Thursday, June 10 and 12. Call for an appointment243-11522,or send a letter of application and resume to:Personnel Department　　Executive Real Estate Corporation　　500 Capital Avenue　　Lawrence, Kansas 67884

单选题According to the author, applying biotechnology to industry