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XML是互联网联合组织创建的一组规范，XML是开放的，是______标准。XML主要有______等三个要素，为了增强XML文件结构化要求，一般要使用XML的辅助技术______。
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一只转基因克隆兔已于3个月前在沪诞生。根据上海交大医学院项目组检索，这是有新闻报道和学术报道以来的世界首例转基因克隆兔。日前这只小兔子已通过分子生物学“身份鉴定”。这只转基因克隆兔携带有绿色荧光蛋白基因，将为今后大规模建立转基因兔动物模型、定向研究人类疑难杂症奠定基础。据介绍，兔子克隆胚胎发育率低、怀孕率低、出生后死亡率高，这些因素导致了科学家较难培育出转基因克隆兔。此前，法国一家研究所在2002年也用颗粒细胞克隆了一只兔子，但生下来后很快就死亡了。
无论信息工程的方法如何变化，信息工程都是运用______方式，通过信息战略规划、业务领域分析、系统设计和系统构成等步骤来实现企业的信息系统建设，也需要建立用于存储企业数据模型、(20) 、各种设计信息的信息库。
在软件维护的实施过程中，为了正确、有效地修改，需要经历以下3个步骤：______、修改程序和重新验证程序，重新验证程序包括______确认、计算机确认和维护后的______。
Human beings in all times and places think about their world and wonder at their place in it.Humans are thoughtful and creative, possessed of insatiable curiosity. 46) Furthermore, humans have the ability to modify the environment in which they live, thus subjecting all other life forms to their own peculiar ideas and fancies. Therefore, it is important to study humans in all their richness and diversity in a calm and systematic manner, with the hope that the knowledge resulting from such studies can lead humans to a more harmonious way of living with themselves and with all other life forms on this planet Earth."Anthropology" derives from the Greek words "anthropos": "human" and "logos": "the study of". By its very name, anthropology encompasses the study of all humankind.Anthropology is one of the social sciences. 47) Social science is that branch of intellectual enquiry which seeks to study humans and their endeavors in the same reasoned, orderly, systematic, and dispassioned manner that natural scientists use for the study of natural phenomena.Social science disciplines include geography, economics, political science, psychology, and sociology. Each of these social sciences has a subfield or specialization which lies particularly close to anthropology.All the social sciences focus upon the study of humanity. Anthropology is a field - study oriented discipline which makes extensive use of the comparative method in analysis. 48) The emphasis on data gathered first - hand, combined with a cross - cultural perspective brought to the analysis of cultures past and present, makes this study a unique and distinctly important social science.Anthropological analyses rest heavily upon the concept of culture. Sir Edward Tylor’ s formulation of the concept of culture was one of the great intellectual achievements of 19th century science. 49) Tylor defined culture as "...that complex whole which includes belief, art, morals, law, custom, and any other capabilities and habits acquired by man as a member of society." This insight, so profound in its simplicity, opened up an entirely new way of perceiving and under standing human life. Implicit within Tylor’ s definition is the concept that culture is learned, shared, and patterned behavior.50) Thus, the anthropological concept of "culture", like the concept of "set"in mathematics, is an abstract concept which makes possible immense amounts of concrete research and understanding. Furthermore, humans have the ability to modify the environment in which they live, thus subjecting all other life forms to their own peculiar ideas and fancies
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