The drugaddict spent much money on his drug every day, ________ he became poorer and poorer.

A.as a result

B.as the result

C.as a result of which

D.as a result of

答案及解析： C

解析：

本题考查非限制性定语从句．若选答案A则空白处后面应该是逗号，且空白前应该有and或为句号．