—What’s the matter doctor?—Nothing serious.Take this medicine according to the and you’ll

问题补充：

—What’s the matter,doctor?

—Nothing serious.Take this medicine according to the ,and you’ll get better soon.

A. introductions

B. explanations

C. suggestions

D. instructions

答案：

A. introductions

B. explanations

C. suggestions

(答案→)D. instructions

解析：按“说明”服药；introduction意为“介绍”,explanation意为“解释”,suggestion意为“建议,暗示”。