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据1988年对全国残疾人调查.我国有1(?)以上儿童智力低下,这是一个严重的问题。所谓智力低下,是指儿童的智力明显低于正常儿童,属弱智或痴呆。引起智力低下的原因很多,有怀孕期受损和产时因素(如难产造成窒息缺氧,也有出生后脑部感染、损伤、营养短缺和中毒等原因。现代医学实践证明,弱智儿童如能
According to the survey of persons with disabilities in the country in 1988. My country has 1 or more children with mental retardation, which is a serious problem. The so-called mental retardation, refers to children’s intelligence was significantly lower than normal children, is mentally retarded or dementia. Cause mental retardation for many reasons, there are impaired pregnancy and labor-induced factors (such as dystocia caused by asphyxia and hypoxia, there are post-natal brain infections, injuries, nutritional deficiencies and poisoning, etc. Modern medical practice has proved that mentally handicapped children can