患者,女,27 岁。前额及颈部共四个黄豆至铜钱大小皮损,略呈圆形斑块,周围稍高起,中央较平坦,皮损边缘活跃,有密集的红色小丘疹及领圈样鳞屑,中央皮肤淡红或正常肤色向外周扩散,中间有愈合倾向,伴轻度瘙痒,家中有养狗史,此前宠物医院诊断为该狗有真菌感染(具体菌种不详) ,取皮损边缘鳞屑进行显微镜检查,应以下述哪种方法对鳞屑进行处理 ( )
A. 10% 氢氧化钾
B. 10% 盐酸
C. 10% 高锰酸钾
D. 10% 过氧化氢
E. 10% 甲醛
Professor John is saidanother important discovery, in chemistry.
A. to make
B. having been made
C. having made
D. to have made