单项选择题

Questions 23 to 25 are based on the conversation you have just heard.

A．Influence of ocean on animals.
B．Relationship between human beings and dolphins.
C．The lives of dolphins.
D．Reasons to protect dolphins.
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单项选择题
A．Brain structure and mechanism.B．Foreign language learning ability.C．People’s brain and second language learning.D．Similarities and differences between adults and children in language learning.
A．Brain structure and mechanism.
B．Foreign language learning ability.
C．People’s brain and second language learning.
D．Similarities and differences between adults and children in language learning.
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