推疣法适用于
A．鼠乳
B．扁平疣
C．掌跖疣
D．丝状疣和寻常疣
E．以上都不是
参考答案：D
苍耳麸炒可以利于有效成分的煎出。
A good idea occurred to Mr. Baker________ to his invention recently. [ ]
A. while applying
B. while applied
C. while he was applying himself
D. while applying himself
