论美国外星生物题材科幻电影的危机意识

On Crisis Awareness of American Alien Creature themed Science Fiction Films

危机是具有不确定性的事物，危机意识则是人类自我保护机制的体现。美国外星生物题材科幻电影既将目光投向浩瀚的天空，也把触角伸向人类内心和社会生存的真实状态。其故事模式、思想倾向、文化根源与危机意识如影相随。

The crisis is something of uncertainty..Crisis awareness is the embodiment of human self-protection mecha- nism. American alien creature themed science fiction films not only pay attention to the vast sky, but also approach the hu- man heart and the real condition of survival in society. Their story mode, ideological trend and cultural root are integrated with the crisis awareness.