题目内容:
听音频,{MP3:http://wximg.233.com/attached/media/20160518/20160518142747_0500.mp3}回答题
A.It is a ldnd of social problem.
B.It has a bad impact on mental health.
C.It makes people less effective at work.
D.It troubles most people nowadays.
参考答案:
答案解析: