更多"What is the main topic of the conve"的相关试题:
[单项选择]What is the main topic of this conversation
A. The man’s graduation.
B. The couple’s engagement.
C. The man’s smoking.
D. The man’s stress.
[单项选择]What is the main topic of the conversation
A. The development of the automobile.
B. Declining air quality.
C. The structure of nitrous oxides.
D. Air quality management.