由于老年人胃肠道血流量减少,转运系统功能降低,而引起以下哪些药物吸收减少()
A.铁制剂
B.钙制剂
C.水溶性维生素
D.硝苯地平
E.乙酰水杨酸
参考答案:A, B, C
_____ is known to us all is that the 2008 Olympic Games will take place in Beijing. [ ]
A. It
B. What
C. As
D. Which
为段落文本添加项目符号时,该项目符号可以定义的内容有()
A、符号外形
B、符号大小
C、悬挂
D、符号颜色