单选题It is a pity that spiteful remarks are______with great speed. A. conveyed B. consulted C. displayed D. confronted

单选题Plastics are the best insulator of electricity, rubber ______ it closely.

单选题Water is the oldest form of transport. The original sailing vessels were replaced by steamboats in the early 1800s and by diesel power in the 1920s. A distinction is generally made between deepwater and navigable inland water transport. Domestic commerce centers on tile Great Lakes, canals, and navigable rivers. In 1975 water transport accounted for 22.6 percent of total intercity tonnage. Its relative share of intercity tonnage was 31.3 percent in 1947 and 31.7 percent in 1958. Tonnage declined to 27.9 percent in 1965 but increased by 1970 to 28.4 percent. This short-term increase did not stabilize. Market share dropped by 5.8 percent by 1975. Forecasted market share by 1985 is 18.4 percent of total intercity tonnage. The water transport share of revenue has been less than 2 percent of intercity freight revenue since 1955. The exact miles of improved waterways in operation depend in part on whether coastwise and intercostal shipping are included. Approximately 26,000 miles of improved inland waterways were operated in 1975. Fewer miles of improved inland waterways exist than of any other transportation mode. The main advantage of water transport is the capacity to move extremely large shipments. Deepwater vessels are restricted in operation, but diesel-towed barges have a fair degree of flexibility. In comparison to rail and highway, water transport ranks in the middle with respect to fixed cost. The fixed cost of operation is greater than that of motor carriers but less than that of railroads. The main disadvantage of water is the limited degree of flexibility and the low speeds of transport. Unless the source and destination of the movement are adjacent to a waterway, supplemental haul by rail or truck is required. The capability of water to transport large tonnage at low variable cost places this mode of transport in demand when low freight rates are desired and speed of transit is a secondary consideration. Freight transported by inland water leans heavily to mining and basic bulk commodities, such as chemicals, cement, and selected agricultural products. In addition to the restrictions of navigable waterways, terminal facilities for bulk arid dry cargo storage and load-unload devices limit the flexibility of water transport. Labor restrictions on loading and unloading at dock level create operational problems and tend to reduce the potential range of available traffic. Finally, a highly competitive situation has developed between railroads and inland water carriers in areas where parallel routings exist. Inland and Great Lakes water transport will continue to be a viable alternative for future logistical system design. The full potential of the St. Lawrence Seaway has not yet been realized with respect to domestic freight. The slow passage of inland river transport can provide a form of warehousing in transit if fully integrated into overall system design. Improvements in ice-breaking equipment appear on the verge of eliminating the seasonal limitations of water transport.

单选题Question 21-25 are based on the following passage：

单选题Historians such as Le Roy Laduric have used the documents to extract case histories, which have______the attitudes of different social groups and have revealed how the authorities administered justice.

单选题In her statement Miss Nightingale intended to

单选题The language experts believe that the ______ age for learning a foreign language is 6 years old.

单选题It is often observed that the aged spend much time thinking and talking about their past lives, (71) about the future. These reminiscences are not simply random or trivial memories, (72) is their purpose merely to make conversation. The old person's recollections of the past help to (73) an identity that is becoming increasingly fragile: (74) any role that brings respect or any goal that might provide (75) to the future, the individual mentions his past as a reminder to listeners, that here was a life (76) living. (77) , the memories form part of a continuing life (78) , in which the old person (79) the events and experiences of the years gone by and (80) on the overall meaning of his or her own almost completed life. As the life cycle (81) to its close, the aged must also learn to accept the reality of their own impending (即将发生的) death. (82) this task is made difficult by the fact that death is almost a (83) subject in the United States. The mere discussion of death is often regarded as (84) . As adults many of us find the topic frightening and are (85) to think about it—and certainly not to talk about it (86) the presence of someone who is dying. Death has achieved this taboo (87) only in the modem industrial societies. There seems to be an important mason for our reluctance to (88) the idea of death. It is the very fact that death remains (89) our control; it is almost the only one of the natural processes (90) is so.

单选题The lady ______ her skirt by sitting on the seat while flying.

单选题The shop manager said that he intended to ______ the less efficient members of his staff. A. resign B. dismiss C. employ D. appoint

单选题This state research program is made up of two funds, ______ could last for two years.

单选题The badly wounded soldiers take ______ for medical treatment over those only slightly hurt.

单选题Attacking an increasingly popular Internet business practice, a consumer watchdog group Monday filed a complaint with the Federal Trade Commission, asserting that many online search engines are concealing the impact special fees have on search results by Internet users. Commercial Alert, a 3-year-old group founded by consumer activist Ralph Nader, asked the FTC to investigate whether eight of the Web's largest search engines are violating federal laws against deceptive advertising. The group said that the search engines are abandoning objective formulas, to determine the order of their listed results and selling the top spots to the highest bidders without making adequate disclosures to Web surfers. The complaint touches a hot-button issue affecting tens of millions of people who submit search queries each day. With more than 2 billion pages and more than 14 billion hyperlinks on the Web, search requests rank as the second most popular online activity after E-mail. The eight search engines named in Commercial Alert's complaint are. MSN, owned by Microsoft; Netscape, owned by AOL Time Warner; Directhit, owned by Ask Jeeves; HotBot and Lycos, both owned by Terra Lycos; Altavista, owned by CMGI; LookSmart, owned by LookSmart; and Iwon, owned by a privately held company operating under the same name. Portland, Ore. -based Commercial Alert could have named more search engines in its complaint, but focused on the biggest sites that are auctioning off spots in their results, said Gary Ruskin, the group's executive director. "Search engines have become central in the quest for learning and knowledge in our society. The ability to skew (扭曲) the results in favor of hucksters (小贩) without telling consumers is a serious problem," Ruskin said. By late Monday afternoon, three of the search engines had responded to The Associated Press' inquiries about the complaint. Two, LookSmart and AltaVista, denied the charges. Microsoft spokesman Matt Pilla said MSN is delivering" compelling search results that people want." The FTC had no comment about the complaint Monday. The complaint takes aim at the new business plans embraced by more search engines as they try to cash in on their pivotal (关键的) role as Web guides and reverse a steady stream of losses. To boost revenue, search engines in the past year have been accepting payments from businesses interested in receiving a higher ranking in certain categories or ensuring that their sites are reviewed more frequently.

单选题The purpose of Joel Waldfogel's study is to ______.

单选题John Locke, the well-known 18th century English thinker, emphasized experience as the condition for expansion of human knowledge.

单选题His short______in the living room had been long enough to keep him awake now.

单选题The elements of nature must be reckoned with in any military campaign. Napoleon and Hitler both underestimated the______of the Russian winter.

单选题A new material ______ , we have good reason to be optimistic. A. developed B. being developed C. was being developed D. was developed