近日,我们就美国金融危机所引起的全球金融波动及对我国的影响和我国应对之策,采访了西安交通大学证券研究所所长、博士生导师冯涛教授。姜凡、刘晓阳(以下简称问):众所周知,这次席卷全球的金融危机是由美国次贷危机引起的,那么首先请冯教授解释一下什么是次贷危机,危机又是如何扩大的?为什么会在美国爆发? Recently, on the global financial turmoil caused by the U.S. financial crisis and its impact on our country and our response, we interviewed Professor Feng Tao, director of the Securities Research Institute of Xi’an Jiaotong University and a doctoral supervisor. As we all know, the financial crisis sweeping the globe is caused by the subprime mortgage crisis in the United States. First, please ask Professor Feng to explain what is the subprime mortgage crisis and how is the crisis expanding? In the United States broke out?