缺铁性贫血的患者可服用哪个药物进行治疗
A．叶酸B．维生素B12C．硫酸亚铁D．华法林E．肝素
参考答案：C
直肠癌根治术后辅助性放疗时，常用的剂量为()
A．40Gy
B．60Gy
C．50Gy
D．70Gy
E．45Gy
— Jack,you look tired today. What's wrong?
— I was _____ busy _____ I didn't go to bed until midnight yesterday.[ ]
A. so ; that
B. such ; that
C. too ; to
