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Human's classification consciousness and practice on vegetation, animals and other organisms have existed since ancient times. They existed in ancient China and ancient Greece, and developed into a science-taxonomy. However, the early classification was mainly based on morphology, such as the shape of roots, stems and leaves. Taxonomy based on morphology is the oldest discipline in biology, and the earliest phyla, classes, orders, families, genera and species basically came from here. Taxonomy in the general sense refers to a specialized discipline that identifies, identifies, describes, names and classifies organisms. The task and purpose of taxonomy can be divided into two parts:4. After the WeChat double-open button is opened, an information prompt box will pop up at the bottom of the page.心系国家的老党员罗秉文响应国家号召将儿子罗家明送往边疆参加支边建设。在支边期间罗家明认识了同为支边青年的科研人员沈湘玥，并帮助沈湘玥所在的科室研究出了新型化肥，大大提高了生产力。同时他在机械工程师宋思逸的影响下，心系祖国机械工业发展，组建了边疆的机械队伍，为边疆的机械化生产奠定了基础。在此过程中，罗家明与沈湘玥两人互相帮助、彼此欣赏，共同克服了种种困难，正当两人几经磨难眼看将要修成正果之际，却因为各自的理想而不能继续共事一处，风雨飘摇中，两人的命运将走向何处……《大侠日天》是由搜狐视频与飞鱼娱乐联合出品的大型网络剧。主演蒋龙、代文雯、刘帅、张歆莹、袁百梓卉[1] 等新秀携手罗家英、崔成国、孟瑶、酱爆等知名演员亮相，加盟这部与众不同的任性穿越剧。该剧主要讲述了住在江湖街的贴膜少年刘日天，整日靠“贴膜”和卖碟为生，因一次偶然事件，祖传秘籍落入水中，显现出新的字迹，照着运功之后，穿越到古代武林，在古代和现代双重危机间，实现个人成长，最终成为一代大侠。在哪里来着……好像是在电视里。The first reaction to the thought of a star is whether he has cooperated with Oppo, whether he has endorsed other brands of mobile phones, and whether there is any possibility of cooperation.