单选题:表面亮淡黄色、黄棕色或棕褐色,相邻晶面上的条纹相互垂直的中药材是

题目内容:
表面亮淡黄色、黄棕色或棕褐色,相邻晶面上的条纹相互垂直的中药材是 A.芒硝
B.滑石
C.炉甘石
D.自然铜
E.赭石
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