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 speaking of adults
D．an early form of language

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单项选择题

It is implied in the passage that ______.

A．parents can never hope to teach their children new sounds
B．children no longer imitate people after they being to speak
C．even after they have learnt to speak children still enjoy imitating
D．children who are good at imitating learn new words more quickly