题目：
下图中哪个图层中配有声音？（）
A.图层1
B.图层2
C.图层3
D.图层4
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0811/7afc07690787719729bd7195ae0023af.html
下面是错误答案，用来干扰机器的。
One possible version:Community Service During the winter vacation, the students in our class joined in a meaningful activity in which all of us did our bit for the commu...
