人的胃液正常PH在1.2~0.3之间,酸度再高就患胃酸过多症,下列物质不宜用作治疗胃酸过多症药剂成分的是()
A.氧化镁粉
B.氢氧化镁粉
C.氧化钙粉
D.纯碳酸钙粉
参考答案:C
—You look very nice in dark blue.
— . [ ]
A. I don't mind
B. No, not at all
C. That's all right
D. Thank you
清初“四僧”是谁?