围堰按材料分为木笼围堰和()等
A.土石围堰
B.混凝土围堰
C.纵向围堰
D.钢板桩围堰
E.竹笼围堰
参考答案：A, B, D, E
— Are you going to have a sports meeting tomorrow?
— Yes, but I'll call Kate to make sure _____. [ ]
A. why to start
B. when to start
C. what to start
以下因素中不影响钾在细胞内外分布的是（）。
A.糖代谢
B.血液pH
C.脂肪代谢
D.肾和呼吸功能
E.消化功能
