下列药物属于细胞毒素类抗癌药的是（）
A.平阳霉素
B.环磷酰胺
C.氟尿嘧啶
D.长春新碱
E.肾上腺皮质激素
参考答案：B
等腰△ABC中，若有一个内角为40°，则顶角等于______．
He slipped and had his leg broken. _______, he will have to be away from school for two or three months.
A．In any case
B．After all
C．As a result
D．In this way
