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李四光同志的《人类的出现》一文阐述了关于人类发展的科学研究成果。文章在运用大量的考古资料分别说明了从古猿——猿人——古人——新人这人类发展的四个阶段的特点之后,在末段通过人类文化发展进程的概述,揭示了人类发展的总趋势:人类文化的发展,经过新人阶段的旧石器时代晚期以后,先后进入新石器时代及金属时代。愈到后来发展愈为迅猛。从新石器时代的开始到现在至多不过一万年左右,金属时代的开始到现在不过数千年,人们开始利用电
Comrade Li Siguang’s article “The Appearance of Mankind” elaborated scientific research results on human development. The article uses a large amount of archaeological data to illustrate the characteristics of the four phases of human development from the ancient mantle—the monk—the ancients—the new man. After an overview of the process of human cultural development in the final stage, it reveals the total human development. Trend: The development of human culture, after the late stage of the late Paleolithic period after the newcomer period, has entered the Neolithic Age and the Metal Age. Afterwards, the more rapid the development has become. From the beginning of the Neolithic Age to the present, at most only about 10,000 years, the metal age has only been in existence for thousands of years. People have begun to use electricity.