聋哑人大都是先聋后哑的,而对聋儿进行语言训练带有抢救性质,越早越好。不少失聪的孩子早期经手术、药物或用助听器等能利用残余听力学习语言而不致哑,这对孩子今后独立在社会生活、工作是十分重要的。因此,婴幼儿时期就要观察孩子的听力是否正常,发现疑问及时诊治。那么怎样知道还不会说话的幼儿听力正常呢? Deaf and mute are mostly deaf and dumb first, and deaf children with language training with the nature of the rescue, the sooner the better. Many deaf children with early surgery, drugs or hearing aids, etc. can use the residual hearing ability to learn the language without dumb, which children in the future independent social life, work is very important. Therefore, infants and young children must observe the hearing of children is normal, found that the timely diagnosis and treatment. So how do you know that children who can not speak normally hear properly?