A. A culture of harmony provides important intellectual support for the unity and progress of all our people.B. We will also strengthen international cultural exchanges to draw on the fine achievements of foreign cultures and enhance the influence of Chinese culture worldwide.C. We maintain that the people of all countries should join hands and strive to build a harmonious world of lasting peace and common prosperity.D. On environmental issues, they should assist and cooperate with each other in conservation efforts to take good care of the Earth, the only home of human beings. 在环保问题上，他们应该相互帮助、协力推进，共同呵护人类赖以生存的地球家园。