单项选择题
Passage 1 Questions 11 to 13 are based on the passage you have just heard.
A.The world’s major languages. B.Cultural differences. C.Arabian desert life. D.Language and culture.
A.It’s determined before birth. B.Its left half specializes in music. C.Its left half specializes in language. D.It has a complex structure.
A.Americans. B.Englishman. C.They speak with the same speed. D.The passage doesn’t mention.