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智能低下（MR）是威胁儿童身心健康的一组极为严重的世界性疾病。据估计全世界约有1.5亿智能低下患者,由于量大和予后严重而成为一个引人重视的社会问题。近30年来,因对MR病因学的研究获有较大进展、从而对MR的防治提供了有利条件。 “智能”是指人对客观事物认识和理解的能力,包括观察力、注意力、记忆力、想象力,思维能力等的综合能力,而智能低下是指小儿生长期间时客观事物的上述能力,低于同龄小儿的平均水平,这种患儿的智能发育始终不能成熟,而在生活、学习、行为
Mental retardation (MR) is a very serious group of world diseases that threaten children’s physical and mental health. It is estimated that about 150 million people with mental retardation in the world have become an attractive social issue due to their large quantity and seriousness. The past 30 years, due to the study of MR etiology have made great progress, which provides favorable conditions for the prevention and treatment of MR. “Intelligence” refers to people’s ability to understand and understand objective things, including the comprehensive ability of observation, attention, memory, imagination, thinking ability and so on, while mental retardation refers to the above ability of objective things in children’s growth, low At the same level of children’s average level, this kind of children’s intellectual development has always been unable to mature, and in life, learning, behavior