听力原文：W: Im going to leave work early today. Theres a debate this evening at 6 oclock.
A. He is too busy.
B. He is not old enough.
C. He doesn"t have transportation.
D. He feels it doesn"t make a difference.
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From this lecture, what can be inferred about the relationship between nurture and language acquisition？
A. Preschoolers" interaction with adults has no effect on their communication skills.
B. Toddlers are unable to communicate because they haven"t learned the rules of grammar yet.
C. Babies should be exposed to situations where language is modeled so that they can learn to use it.
D. Children who imitate sounds or words are not really communicating meanin
What can be inferred about student
A. He tries to summarize what the professor has said.
B. He tries to express his own opinion.
C. He raises a question on the topic.
D. He becomes quite confused on the topi
Look at the four squaresthat indicate where the following sentence could be added to the passage. Even those ancient pioneers of civilization, the Greeks, mourned the lost innocence. Where would the sentence best fit？
A. Square Ａ.
B. Square Ｂ.
C. Square Ｃ.
D. Square Ｄ.
Why does the professor mention the expressions "mother tongue" and "motherese"？
A. To prove that mothers are better language role models than fathers.
B. To illustrate how parents provide a support system for language learning.
C. To compare normal speech patterns with the baby talk that parents use.
D. To argue that second language learning is more difficult for adults.
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