False sound

① Hearing impairment: Deaf children have different levels of hearing loss, so the effect of hearing compensation is not the same. As a result, the deaf children have different degrees of distortion, and abnormal speech occurs. From the perspective of deaf children, the more severe the deafness, the longer the deafness, and the more obvious the abnormal speech. ② Insufficient articulation organs: Deaf children can't hear or can't hear sounds, so it is naturally impossible to imitate pronunciation. The muscle tissues of the articulatory organs have not been exercised for a long time, which causes the dysfunction of the articulation organs and muscles of the deaf children. Causes abnormal speech.

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