单项选择题

The third paragraph is mainly about ______.

A．the development of babies early forms of language
B．the difficulties of babies in learning to speak
C．babies strong desire to communicate
D．babies intention to communicate

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单项选择题

The author's purpose in writing the second paragraph is to show that children______.

A．usually obey without asking questions
B．are passive in the process of learning to speak
C．are born cooperative
D．learn to speak by listening

单项选择题

The best title for this passage would be______.

A．How Babies Learn to Speak
B．Early Forms of Language
C．A Huge Task for Children
D．Noise Making and Language Learning