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by 安健

ebook

科学技术是人类文明的标志。人类社会的每一项进步，都伴随着科学技术的进步。青少年朋友更应该了解一些科技常识。《青少年科技常识必读》一书搜集了大量与科技常识有关的短文，内容涉及网络，军事，能源等多个当今热点领域，包括《最新信息技术》、《能源高新技术》、《有哪几种手枪？》等。