人类生存的一篇作文（英语四级作文）Man Is to Survive

写作要点： 1．人类面临的问题(如能源、疾病、污染、人口等)2．悲观的看法(人类将无法生存)3．人类的智慧出路 Man Is to Survive       Nowadays humanity is faced with a lot of troublesome problems: energy threatening the survival of hu...