第4题: [多项选择]有价证券组合中各成分资产的相关系数越小，则( )。 A. 其分散化效果越好 B. 其分散化效果越差 C. 组合的风险越小 D. 组合的风险越大 E. 组合收益越大 参考答案:A,C,E 答案解析:[解析] 有价证券资产组合中各成分资产的相关系数越小，其分散化效果越好，资产组合风险越小，说明资产组合收益越大。
第20题: [单项选择]Project（）Management includes the processes required to ensure that the project includes all the work required, and only the work required, to complete the project successfully. A. Integration B. Scope C. Configuration D. Requirement 参考答案:B 答案解析:
第33题: [单项选择]What does the professor imply when he says this A. We must communicate with other people in social settings. B. Person-to-person speech is the basis of communication. C. We can exchange views through conversations. D. Face-to-face contact is the simplest means of speec 参考答案:A 答案解析:[解析] 本题属于推论题，要求考生根据所给信息，对听力材料中的某一观点或事实作出推断。题目问：教授说这段话是什么意思这段话的意思是：我们若要参与社会活动，如乘车、购物、下饭馆，我们就要与别人进行对话，
