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
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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.
Why does the author mention young elephants attempts to drink with their trunks in paragraph 4？
A. To argue that elephants must be intelligent in order to use their trunks.
B. To show that baby elephants would surely die without their mothers" help.
C. To provide an example of an instinctual behavior. inherent in elephants.
D. To emphasize how important learning is in the lives of elephants.
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