Always read the on the bottle carefully and take the right amount of medicine.A. explanat

网友回答

A. explanations
(答案→)B. instructions
C. descriptions
D. introductions
解析：explanations解释；instructions说明；descriptions描述；introductions介绍。句意：要仔细阅读药瓶上的说明按照正确的剂量服用。所以选B。