单项选择题

Questions 13 to 15 are based on the conversation you have just heard.

A. The difficulty of raising animals on farms in colonial America.
B. Traffic problems in colonial American cities.
C. Population growth in colonial American cities.
D. Economic conditions in colonial America.
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单项选择题
C
单项选择题
A. In a professor’s office. B. In a medical doctor’s office. C. In an auditorium. D. In a gym.
A. In a professor’s office. B. In a medical doctor’s office.
C. In an auditorium. D. In a gym.
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