酒渍保存法是利用酒中的( )成分进行杀菌和抑制酶的活性。
A．乙醇
B．乙醛
C．乙酯
D．乙醚
参考答案：A
---Is anything _____?
---I can’t decide which dress I should wear at my friend’s wedding party.
---I don’t think it ____.
A．the matter; the matter
B．matter; matters
C．the matter; matters
D．matter; the matter
如何科学地界定企业使命？
