善治寒疝腹痛、睾丸肿痛的药物是()。
A.高良姜
B.木香
C.川楝子
D.荔枝核
E.沉香
参考答案:D
These days our _____ concern is to provide people with enough information about food safety. [ ]
A. normal
B. constant
C. permanent
D. primary