问题补充：
Though he is busy, music has always been his work.
A. as much a part of his life as
B. as a part of his life much as
C. as much as a part of his life
D. so much a part of his life as
答案：
(答案→)A. as much a part of his life as
B. as a part of his life much as
C. as much as a part of his life
D. so much a part of his life as
解析：本题考查as…as的用法。as...as意为和……一样，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。当as… as 中间有名词时采用：as +形容词+ a +单数名词。
