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假设资本资产定价模型成立，根据下表完成以下各题：证券种类期望报酬率标准差与市场组合的相关系数β值无风险资产ABCD市场组合E0.1FGA股票0.2H0.651.3B股票0.150.15I0.9C股票0.1J0.2K 利用β的定值公式，可以得到A股的标准差和B股与市场组合的相关系数分别为（）。
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Questions 11 to 18 are based on the conversation you have just heard.
Milton Friedman was wrong. Inflation is always and everywhere a social phenomenon, not a monetary one. At least, that is how Robert Samuelson sees it. The Great Inflation and Its Aftermath dwells little on the economics of inflation; the main text does not mention the Federal Reserve until page 31. Instead, it examines the intellectual and political currents that let inflation rise from 1% in the early 1960s to nearly 15% in 1980 and then brought it down again. This is a laudable(值得称赞的) enterprise. Historians have devoted lots of scholarship to the Vietnam War and the civil-rights movement but almost nothing to the parallel rise in inflation, whose impact on society has been arguably great. Mr. Samuelson, an economics columnist for the Washington Post and Newsweek, graphically recounts the futile efforts of various presidents to contain inflation, and the toll they exacted. Inflation began, Mr. Samuelson writes, because the followers of John Maynard Keynes who dominated economics after the Second World War convinced John Kennedy that reducing unemployment would cause only a small rise in inflation. But as inflation increased, it became politically impossible to bring it down. In 1968 Richard Nixon asked Herbert Stein, a nominee for Iris Council of Economic Advisers, what the president-elect’s biggest economic challenge would be. When Stein replied inflation, Nixon "immediately warned me that we must not raise unemployment," Stein later wrote. The Great Inflation and Its Aftermath is readable, but often frustrating. Rather than proceeding chronologically, it hopscotches (像玩“跳房子”游戏) back and forth between decades, repeatedly bringing home the points it wants to make. Despite the forward-looking subtitle, Mr. Samuelson does not demonstrate that the great inflation has much bearing on America’s future. He spends much of two chapters, 73 pages in all, choosing a list of contemporary economic problems, from excessive entitlement spending to global imbalances that have little to do with inflation. Meanwhile, he devotes just a few paragraphs to inflation’s most crucial impact at the present. The decline in interest rates that followed inflation’s defeat created bubbles in stocks and houses and fuelled a" reach for yield" whose undoing is at the heart of the current crisis. More puzzling is the fact that, in a year in which inflation and deflation have both repeatedly hit the headlines, Mr. Samuelson devotes little time to speculating on the future course of inflation and the political pressures that will affect it. That is a pity because it is a ripe subject. What is the author’s opinion about the book The Great Inflation and Its Aftermath
In 1967, in response to widespread public concern aroused by medical reports of asbestos(石棉绒) related deaths, NMRC organized a committee of enquiry to investigate the health threats ,associated with the use of asbestos in the building industry. After examining evidences provided by medical researchers and building workers and management, NMRC published a report, which included advices for dealing with asbestos. The report confirmed the findings of similar research in the U. S. and Canada. Exposure to relatively small quantities of asbestos fibers, they concluded, was directly responsible for the development of cancers, asbestosis and related diseases. Taking into account evidence provided by economists and building industry management, however, the report assumed that despite the availability of other materials, asbestos would continue to play a major role in the British building industry for many years to come because of its availability and low cost. As a result, NMRC gave a series of recommendations, which were intended to reduce the risks to those who might be exposed to asbestos in working environments. They recommended that, where possible, asbestos-free materials should be employed. In cases where asbestos was employed, it was recommended that it should be used in such a way that loose fibers were less likely to enter the air. The report recommended that special care should be taken during work in environments which contain asbestos. Workers should wear protective equipment and take special care to remove dust from the environment and clothing with the use of vacuum cleaner. The report identified five factors which determine the level of risk involved. The state and type of asbestos is critical to determining the risk factors. In addition, dust formation was found to be limited where the asbestos was used when wet rather than dry. A critical factor takes place in risk reduction is the adequate ventilation of the working environment. When work takes place in an enclosed space, more asbestos particles circulate and it was therefore recommended that natural or machine ventilation should be used. By closely following these advices, it was claimed that exposure can be reduced to a reasonably practical minimum. According to the report, dust formation can be reduced when _________.
根据案例二，完成以下各题： 王先生今年30岁，在一家大公司工作。该公司效益良好，于今年成立了企业年金理事会，开始企业年金计划，并分别委托一家基金管理公司作为投资管理人，一家商业银行作为托管人和账户管理人。 企业年金是一种补充养老保险，关于企业年金与基本养老保险的关系的描述，正确的是：( )。
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