—Your spoken English is really good. 

— ______.[ ]

A. That's all right

B. Thank you very much

C. It doesn't matter

D. That's a good idea

非甾体抗炎药引起急性胃炎的主要机制是

A．激活磷脂酶A

B．抑制前弹性蛋白酶

C．抑制前列腺素合成

D．促进胃泌素合成

E．抑制脂肪酶