Questions 23 to 25 are based on the conversation you have just heard.

单项选择题What is the advantage of upward comparison according to Ms. Halvorson（）

A. It can lighten people’s mood.
B. It motivates people to improve.
C. It gains people a sense of superiority.
D. It helps people get rid of bad habits.

单项选择题A. A tool. B. A sign of wealth.C. A symbol of status. D. An article of consumption.