单项选择题

According to the second paragraph, a baby's first noises are

A．a sign that he means to tell you something
B．a reflection of his moods and feelings
C．an imitation of the spoken of adults
D．an early form of language

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单项选择题

A．othersB．anyC．someD．none

A．others
B．any
C．some
D．none

单项选择题

The problem of deciding at what point a baby's imitations can be considered as speech ______.

A．is not especially important because the change takes place gradually
B．is important because words have different meanings for different people
C．is one that can never be properly understood because the meaning of words changes with age
D．is one that should be completely ignored because children's use of words in often meaningless