单项选择题

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

A. Current issues in economics.
B. Choices faced by conservationists.
C. A recent biology lecture.
D. Topics for a research paper.
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单项选择题
A. Because they can’t afford to.B. Because they think small houses are more comfortable to live in.C. Because big houses are usually built in the countryside.D. Because they prefer apartments.
A. Because they can’t afford to.
B. Because they think small houses are more comfortable to live in.
C. Because big houses are usually built in the countryside.
D. Because they prefer apartments.
单项选择题
B
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