日期：2007-11-24 Passage 33 While there is no blueprint for transforming a largely government-controlled economy into a free one, the experience of the United Kingdom since 1979 clearly shows one approach that works: privatization, in which (5) state-owned industries... 阅读全文>>

日期：2007-11-24 Passage 32 According to a recent theory, Archean-age gold-quartz vein systems were formed over two billion years ago from magmatic fluids that originated from molten granitelike bodies deep beneath the surface of the Earth. This theory is (5) contrar... 阅读全文>>

日期：2007-11-24 Passage 31 Historians of womens labor in the United States at first largely disregarded the story of female service workers -women earning wages in occupations such as salesclerk. domestic servant, and office secretary. These historians (5) focused i... 阅读全文>>

日期：2007-11-24 Passage 30 Excess inventory, a massive problem for many busi- nesses, has several causes, some of which are unavoidable. Overstocks may accumulate through production overruns or errors. Certain styles and colors prove unpopular. With (5) some product... 阅读全文>>

日期：2007-11-24 Passage 29 It was once assumed that all living things could be divided into two fundamental and exhaustive categories. Multicellular plants and animals, as well as many unicellu- lar organisms, are eukaryotictheir large, complex cells (5) have a well... 阅读全文>>

日期：2007-11-24 Passage 28 Joseph Glarthaars Forged in Battle is not the first excel- lent study of Black soldiers and their White officers in the Civil War, but it uses more soldiers letters and diaries including rare material from Black soldiersand concen- (5) rat... 阅读全文>>

日期：2007-11-24 Passage 27 Until recently, scientists did not know of a close verte- brate analogue to the extreme form of altruism abserved in eusocial insects like ants and bees, whereby individuals cooperate, sometimes even sacrificing their own oppor- ( 5) tunit... 阅读全文>>

日期：2007-11-24 Passage 26 Schools expect textbooks to be a valuable source of information for students. My research suggests, however, that textbooks that address the place of Native Americans within he history of the United States distort history to suit (5) a par... 阅读全文>>

日期：2007-11-24 Passage 25 In an attempt to improve the overall performance of clerical workers, many companies have introduced com- puterized performance monitoring and control systems (CPMCS) that record and report a workers computer- (5) driven activities. Howeve... 阅读全文>>

日期：2007-11-24 Passage 24 During the 1960s and 1970s, the primary economic development strategy of local governments in the United States was to attract manufacturing industries. Unfortunately, this strategy was usually implemented at another communitys expense: ma... 阅读全文>>

日期：2007-11-24 Passage 23 New observations about the age of some globular clusters in our Milky Way galaxy have cast doubt on a long-held theory about how the galaxy was formed. The Milky Way contains about 125 globular clusters (compact groups of anywhere from sev... 阅读全文>>

日期：2007-11-24 Passage 22 The new school of political history that emerged in the 1960s and 1970s sought to go beyond the traditional focus of political historians on leaders and government institutions by examining directly the political practices of ordinary citi... 阅读全文>>

日期：2007-11-24 Passage 21 Two modes of argumentation have been used on behalf of womens emancipation in Western societies. Arguments in what could be called the relational feminist tradition maintain the doctrine of equality in (5) difference, or equity as distinct... 阅读全文>>

日期：2007-11-24 Passage 20 Although genetic mutations in bacteria and viruses can lead to epidemics, some epidemics are caused by bacteria and viruses that have undergone no significant genetic change. In analyzing the latter, scientists have (5) discovered the impo... 阅读全文>>

日期：2007-11-24 Passage 19 Seeking a competitive advantage, some professional service firms(for example, firms providing advertising, accounting, or health care services) have considered offering unconditional guarantees of satisfaction. Such (5) guarantees specify... 阅读全文>>

日期：2007-11-24 Passage 18 When A. Philip Randolph assumed the leadership of the Brotherhood of Sleeping Car Porters, he began a ten-year battle to win recognition from the Pullman Company, the largest private employer of Black people in the United (5) States and th... 阅读全文>>

日期：2007-11-24 Passage 17 Australian researchers have discovered electroreceptors (sensory organs designed to respond to electrical fields) clustered at the tip of the spiny anteaters snout. The researchers made this discovery by exposing small areas of (5) the sno... 阅读全文>>

日期：2007-11-24 Passage 16 Traditionally, the first firm to commercialize a new technology has benefited from the unique opportunity to shape product definitions, forcing followers to adapt to a standard or invest in an unproven alternative. Today, how- ( 5) ever, t... 阅读全文>>

日期：2007-11-24 Passage 15 Most large corporations in the United States were once run by individual capitalists who owned enough stock to dominate the board of directors and dictate company policy. Because putting such large amounts of (5) stock on the market would... 阅读全文>>

日期：2007-11-24 Passage 14 A meteor stream is composed of dust particles that have been ejected from a parent comet at a variety of velocities. These particles follow the same orbit as the parent comet, but due to their differeing velocities they slowly gain on or f... 阅读全文>>