二次大战结束以来的近半个世纪,由于科学技术的迅猛发展,尤其是以电子计算机、核能利用、空间探索、激光技术、生物分子合成、新材料等为代表的现代科技的出现,从而极大地提高了劳动生产率,推动了生产力的发展,使整个世界的面貌和人类的社会生活发生了巨大变化。据统计,世界发达国家 Nearly half a century since the Second World War ended, due to the rapid development of science and technology, especially the emergence of modern science and technology represented by electronic computers, nuclear energy utilization, space exploration, laser technology, biomolecule synthesis and new materials, The earth has raised labor productivity, promoted the development of productive forces, greatly changed the face of the world and the social life of mankind. According to statistics, the developed countries in the world