单项选择题

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

A. They used carts for collecting garbage.
B. They used pigs to get rid of garbage.
C. They burnt the garbage.
D. They set up trash cans.

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单项选择题

单项选择题

A. The woman’s musical background.B. The woman’s economic situation.C. The woman’s dislike of chemistry.D. The woman’s decision to take on so much work.

A. The woman’s musical background.
B. The woman’s economic situation.
C. The woman’s dislike of chemistry.
D. The woman’s decision to take on so much work.

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