1．人类面临的问题(如能源、疾病、污染、人口等)；
2．悲观的看法(如人类将无法生存)；
3．人类的智慧和出路。
Your composition should be no less than 120 words. Be sure to write your composition in readable handwriting.Man Is to Survive Man is finding himself confronted with more and more problems which threaten his existence on this planet. For example, some resources are beginning to be exhausted. Many diseases are getting difficult to be
