下列不属于医疗用毒性药品的是（）
A.闹羊花
B.蟾酥
C.雄黄
D.朱砂
E.红粉
参考答案：D
已知等腰三角形两边长为7和4，则它的周长为______．
The room was so cluttered with books and papers that it was difficult to find the missing key.()
A．disorganized
B．flattered
C．denounced
D．fixated
