问题补充：
All the viewers were deeply touched by Jay Zhou’s performance they attended his concert.
A. the first time
B. for the first time
C. at the first time
D. at first
答案：
(答案→)A. the first time
B. for the first time
C. at the first time
D. at first
解析：第一次听音乐会时所有观众都被周杰伦的表演打动。A. the first time“第一次”可以作为连词来用连接一个时间从句 B. for the first time“第一次”相当于副词作用只能做状语 D. at first “首先”副词词性只做状语本题缺少连词所以选A
