【正文】 several oncogenes are driven into action, the 該套資料由蕓蕓視頻整理 ： 747883097 TL： 028 8194 2202 期待廣大考生咨詢 推薦： 09 年新東方考研數(shù)學英語政治視頻課程 提供試看文件 提供試用下載網(wǎng)盤 6 cell, unable to turn them off, bees cancerous. The exact mechanisms involved are still mysterious, but the likelihood that many cancers are initiated at the level of genes suggests that we will never prevent all cancers. Changes are a normal part of the evolutionary process, says oncologist William Hayward, Environmental factors can never be totally eliminated。s founders to denote equality before the law, it has also been interpreted to mean equality of opportunity. That concept implies educational opportunity for all children — the right of each child to receive help in learning to the limits of his or her capacity, whether that capacity be small or great. Recent court decisions have confirmed the right of all children — disabled or not — to an appropriate education, and have ordered that public schools take the necessary steps to provide that education. In response, schools are modifying their programs, adapting instruction to children who are exceptional, to those who cannot profit substantially from regular programs. 59. In paragrah 2 . the author cites the example of the leading actor on the stage to show that ________. [A] the growth of exceptional children has much to do with their family and the society [B] exceptional children are more influenced by their families than normal children are [C] exceptional children are the key interest of the family and society [D] the needs of the society weigh much heavier than the needs of the exceptional children 該套資料由蕓蕓視頻整理 ： 747883097 TL： 028 8194 2202 期待廣大考生咨詢 推薦： 09 年新東方考研數(shù)學英語政治視頻課程 提供試看文件 提供試用下載網(wǎng)盤 5 60. The reason that the exceptional children receive so much concern in education is that ________. [A] they are expected to be leaders of the society [B] they might bee a burden of the society [C] they should fully develop their potentials [D] disabled children deserve special consideration 61. This passage mainly deals with ________. [A] the differences of children in their learning capabilities [B] the definition of exceptional children in modern society [C] the special educational programs for exceptional children [D] the necessity of adapting education to exceptional children 62. From this passage we learn that the educational concern for exceptional children ________. [A] is now enjoying legal support [B] disagrees with the tradition of the country [C] was clearly stated by the country39。s understanding — the knowledge, hopes, and fears that are passed on to the next generation. Education in any society is a mirror of that society. In that mirror we can see the strengths, the weaknesses, the hopes, the prejudices, and the central values of the culture itself. The great interest in exceptional children shown in public education over the past three decades indicates the strong feeling in our society that all citizens, whatever their special conditions, deserve the opportunity to fully develop their capabilities. All men are created equal. We39。 and the profit motive, operating under petitive pressures, largely determines how these goods and services are produced. Thus, in the American economic system it is the demand of individual consumers, coupled with the desire of businessmen to maximize profits and the desire of individuals to maximize their ines, that together determine what shall be produced and how resources are used to produce it. An important factor in a marketoriented economy is the mechanism by which consumer demands can be expressed and responded to by producers. In the American economy, this mechanism is provided by a price system, a process in which prices rise and fall in response to relative demands of consumers and supplies offered by sellerproducers. If the product is in short supply relative to the demand, the price will be bid up and some consumers will be eliminated from the market. If, on the other hand, producing more of a modity results in reducing its cost, this will tend to increase the supply offered by sellerproducers. which in turn will lower the price and permit more consumers to buy the product. Thus, price is the regulating mechanism in the American economic system. The important factor in a privateenterprise economy is that individuals are allowed to own productive resources (private property), and they are permitted to hire labor, gain control over natural resources, and produce goods and services for sale at a profit. In the American economy, the concept of private property embraces not only the ownership of productive resources but also certain rights, including the right to determine the price of a product or to make a free contract with another private individual. 51. In Line 7, Para. 1, the desire of individuals to maximize their ines means ________. 該套資料由蕓蕓視頻整理 ： 747883097 TL： 028 8194 2202 期待廣大考生咨詢 推薦： 09 年新東方考研數(shù)學英語政治視頻課程 提供試看文件 提供試用下載網(wǎng)盤 2 [A] Americans are never satisfied with their ines [B] Americans tend to overstate their ines [C] Americans want to have their ines increased [D] Americans want to increase the purchasing power of their ines 52. The first two sentences in the second paragraph tell us that ________. [A] producers can satisfy the consumers by mechanized production [B] consumers can express their demands through producers [C] producers decide the prices of products [D] supply and demand regulate prices 53. According to the passage, a privateenterprise economy is characterized by ________. [A] private property and rights concerned [B] manpower and natural resources control [C] ownership of productive re