The problem of deciding at what point a baby’s imitations cabe considered as speech________.( ) · is important because words have different meanings for different people · is not especially important because the changeover takes place gradually · is one that should be properly understood because the meaning of words changes with age · is one that should be completely ignored(忽略)because children’s use of words is oftemeaningless
答案是:单选题 · they need different amounts of listening · often take a long time in learning to listen properly · an expression of his moods and feelings · is not especially important because the changeover takes place gradually