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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

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出自：佳木斯大学语言治疗学

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