【答案解析】China has made environmental protection one of its basic national policies, regarding it as an important strategy in the realization of sustained economic development.
As a member of the international community, China has taken an active part in international environmental protection affairs and tried her best to promote international cooperation in environmental protection.
Mankind still faces many difficulties in solving the problems of the environment and development. Every country is confronted with the dual task of developing the economy and protecting the environment.
China will, as always, cooperate with other countries of the world and strive for the protection of the environment for human survival, for the happiness and prosperity of humanity. [解析]
环境保护是中国的一项基本国策，是实现经济可持续发展的一项重要战略。
中国作为国际社会中的成员，积极参与国际环保事务，努力促进国际环保合作。
人类在解决环境与发展问题上仍然面临着大量的难题，每个国家都面临着发展经济与保护环境的双重任务。
中国将一如既往与其他国家合作，为保护我们的生存环境、为人类的幸福和繁荣而奋斗。