运动员参赛时禁用的肽激素类药物包括
A．人促红素
B．糖皮质激素
C．促性腺激素
D．人生长激素
E．重组人促红素
参考答案：A,C,D,E
已知△ABC与△A1B1C1关于直线MN对称，且BC与B1C1交与直线MN上一点O，则 [ ]
A．点O是BC的中点
B．点O是B1C1的中点
C．线段OA与OA1关于直线MN对称
D．以上都不对
（），we would have finished it then.
A.If had we had better equipment
B.Had we had better equipment
C.Had had we better equipment
D.We had had better equipment
