一、Owing to variety of social and technological changes, the danger level from environmental hazards is increasing. Most of these trends are not directly with changes in the physical dimension. Rather it is how and where we live. Disaster has many faces, and some of these reflect technological accidents, while others are rooted in the despair of the disenfranchised or the ethnic and religious hatred of extremists who have little tolerance for the diversity among people. Because disasters come in many faces.（You can answer this question in Chinese.可用中文回答）