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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热门试题

单项选择题

According to the author, three design types of previous researches are _______.

A．interrelated to one another
B．supplementary to one another
C．to be modified considerably
D．to be integrated into one design

单项选择题

Children who start speaking late _______.

A．may have problems with their hearing
B．usually pay close attention to what they hear
C．often take a long time in learning, to listen properly
D．probably do not hear enough language spoken around them