A. Don't mention it. B. I don't care. C. It's my fault. D. Forget it.
A. I owe it to your help. B. What a surprise! C. It can't be true! D. Good luck!
A. It serves you right! B. Never mind. C. You are wrong. D. Not at all.
A. It's my pleasure. B. It's quite serious. C. The same to you. D. The joy is mine.
A. 散剂系指药物或与适宜的辅料经粉碎、均匀混合制成的干燥粉末状制剂 B. 散剂与片剂比较，散剂易分散、起效迅速、生物利用度高 C. 混合时摩擦产生静电而阻碍粉末混匀，通常可加少量表面活性剂克服 D. 散剂与液体制剂比较，散剂比较稳定 E. 散剂比表面积大，挥发性成分宜制成散剂而不是片剂
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