It’struethattheseherbs(药单)canbeusedto__________pain．

It’s true that these herbs(药单)can be used to __________pain．

A．decrease

B．reduce

C．relieve

D．relax

正确答案：C
decrease为“减少减小”；reduce“缩减减少”；relieve为“减轻；解除(苦痛忧愁等)”；relax为“使松驰”