第12题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. They are beyond ordinary people. B. They are similar to what can be seen in ordinary life. C. They are illogical. D. They are very systematic and very different from common sense. 参考答案:B 答案解析:[听力原文]26-28
When Thomas Khun was asked by the New York Times a few years ago whether he agreed t
第25题: [多项选择]贝塔系数和标准差都能衡量投资组合的风险，下列关于投资组合的贝塔系数和标准差的表述中，不正确的有（）。 A. 标准差度量的是投资组合的非系统风险 B. 投资组合的贝塔系数等于被组合各证券贝塔系数的加权平均值 C. 投资组合的标准差等于被组合各证券标准差的加权平均值 D. 贝塔系数度量的是投资组合的系统风险 参考答案:A, C 答案解析:标准差度量的是整体风险，而不仅仅是非系统风险，所以选项A的说法不正确；投资组合中各证券的风险因为可能存在相互抵消的情况，所以选项C的说法不正确。
