Pop music is such an important part of society it has even influenced our language. A. as

问题补充：

Pop music is such an important part of society it has even influenced our language.

A. as

B. that

C. which

D. where

答案：

A. as

(答案→)B. that

C. which

D. where

解析：句意：流行音乐是社会上如此重要的一部分以致于音乐影响了我们的语言。句中的it指pop music;这里such a/an +形容词+名词+that+其他。that引导的是结果状语从句，它在从句中不作成分，只起连接的作用，故选B。