氧化后铁是低价铁，还原性好，烧结矿中FeO越高，还原性越好。
参考答案：错
— Where is your mother's hat?
— _____. [ ]
A. Yes, it is
B. I don't know
C. They're on the chair
D. No, it isn't
性温，能疏肝破气的药是（）
A.木香
B.乌药
C.沉香
D.香附
E.青皮
