you think graffiti (涂鸦) is mindless vandalism(破坏行为) against property or a living art form, its popularity suggests that it is here to stay.
A. Although
B. No matter
C. Whether
D. Suppose
网友回答
A. Although
B. No matter
(答案→)C. Whether
D. Suppose
解析：考查从句知识。句意“无论你认为涂鸦是对事物属性的愚蠢的破坏行为还是一种活的艺术形式，它的流行说明它已是既成事实。”A“尽管”；B“无论”，不能引导名词性从句；C“无论”可引导名词性从句，常与or/ or not连用；D“假设”。故选C。