本世纪头20年是我国经济社会环境发展的重要战略机遇期,也是我国科学技术发展的重要战略机遇期。我们既处在经济社会发展新的更高的起点上,也面临比过去更为严竣的挑战。为了抓住战略机遇期,应对严竣挑战,就必须坚持自主创新,充分发挥科技的支撑和引领作用,大力发展高技术,大力 The first 20 years of this century are an important strategic opportunity for the development of China's economic and social environment and an important strategic opportunity for the development of science and technology in our country. We are at a new higher starting point for economic and social development as well as facing more serious challenges than in the past. In order to seize the strategic opportunity and meet the severe challenges, we must insist on independent innovation, give full play to the support and leading role of science and technology, and vigorously develop high technologies and vigorously