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

问题补充：

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

A. descriptions

B. instructions

C. introductions

D. Explanations

答案：

A. descriptions

(答案→)B. instructions

C. introductions

D. Explanations

解析：考查词义辨析。descriptions 描述，instructions 说明书，introductions 介绍，explanations 解释，句意：总是要认真读瓶子上的说明书吃适量的药。所以选B。