题目内容：
9. What do we learn from the experiment of Wood, Lee and Perunovic?A) It is important for people to continually increase their self-esteem.
B) Forcing a person to think positive thoughts may lower their self-esteem.
C) Self-approval can bring a positive change to one’s mood.
D) People with low self-esteem seldom write down their true feelings.
参考答案：