问题补充：
This piece of music is that one.
A. as boring as
B. not as boring than
C. more bored than
D. so boring as
答案：
(答案→)A. as boring as
B. not as boring than
C. more bored than
D. so boring as
解析：句意：这首音乐和那首一样无聊。As…as和not as（so）…as都是固定结构，其中都应该使用原级。所以选A。
