绿叶鸟网（www.lvyeniao.cn）原创整理的 > 英语四级作文 Man Is to Survive1．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
Nowadays humanity is faced with a lot of troublesome problems: energy threatening the survival of humanity. Therefore, stone people are pessimistic about the ture of humanity.
They are pessimistic because they think that limited energy on earth will be exhausted soon; incurable diseases are threatening people's lives; pollution is worsening the environment; population explosion will make food shortage n serious.
Actually they needn't worry too much about these problems. Scientists will have dloped new energy resources by the time oil and coal are used up. Besides, scientists are a thorough study of genes and they will ma to cure cancer by adjusting the arrangement of genes. They are also efforts to control pollution and population. Further, all the governments in the world are concerned about these problems and they have taken measures to solve these problems.
Therefore, we have ry reason to be sure that human beings will nature but they will nr be ed.
