This global warming is on such a scale that it will influence both poor and rich countries. It could even make large sections of the earth uninhabitable. It is urgent that immediate and effetive actions should be taken right away. First, more trees need to be planted to help improve and beautify the environment. Besides, stricter laws concerning global warming and irresponsible use of fuel resources have to be put into effect and achieved good results. As an individual, there are lots way to reduce the global warming: to ride a bike instead of a car,to use environmental plastic bags and so on. In a word, there is a long way to go before we can take a comfortable world for granted again.

相关材料(This is a global issue, it need everyone who stay on the only earth to consider it, solve it together. In order to protect our home, we do as many as we can to reduce the carbon dioxide in the atmosphere to stop the temperature rising. Among such a huge population on this planet, some have a conscience of responsibility to protect the environment, whilst others only care about their interests and ignore possible impacts upon environment.)

关于老龄化

在世界人口走向老龄化和发达国家人口老龄化发展的同时，中国人口老龄化也在加剧。人口老龄化的产生，正是社会进步、经济发展的结果。中国人口转变一般被认为始于新中国成立，起先是死亡率明显而迅速地下降。而全国性的生育率转变则始于20世纪70年代初期国家计划生育政策的介入，并迅速由高生育率水平转向低生育率水平。这样，人口的老龄化就导致了劳动力人口负担不断增大的问题，影响了我国社会经济的发展，并对相应基础设施、法律制度等物质及精神各方面的建设提出了新的要求。

针对这一情况全国老龄委发布了《中国老龄事业发展"十一五"规划》，提出了"十一五"期间，中国在养老保障、医疗保障、社会救助等，以及老龄事业基础设施建设、老年产业、老年精神文化生活等方面所要实现的目标和任务。我们既要正确认识中国人口老龄化的形成原因、基本特征、发展趋势以及可能产生的社会经济后果，更要弄清人口老龄化对社会经济运行及可持续发展的影响。惟此，才能提高决策的科学性和可行性，解决好人口老龄化问题，为实施可持续发展战略创造有利的人口环境。通过对人口老龄化的科学内涵的界定，明确我国人口老龄化的成因。通过对人口老龄化的演进过程的研究，重点阐述我国人口老龄化的特征及其对经济、社会和家庭等各方面的影响，从而解决自身不足，提出解决人口老龄化问题的相应对策措施。

Of the world's population aging and the aging of the population in developed countries the same time, China's aging population has intensified. The aging of the population have is social progress and economic development. China's population changes are generally believed to have started in the founding of new China, the mortality rate is initially clear and rapid decline. And the national fertility rate change is the 20th century began in the early 1970s to the national family planning policy intervention and quickly from the high level of fertility to low fertility level. Thus, the aging of the population has led to the burden of the working population growing problems affecting China's social and economic development, as well as the corresponding infrastructure, legal system and other material and the spirit of building the new requirements. In view of this situation the National Committee on Aging issued a "development of the cause of aging," 11th Five-Year "plan" the "11th Five-Year Plan" period,

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