题目内容:
Which of the following can best summarize the main idea of the text?
A.Social network has negative impact on well-being. B.Facebook is bad for users' in-the-moment mood.
C.Whether people can actively use social network.
D.Whether Facebook will make you sad depends on how you use it.
参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析: