— Would you like _______ the Mountain tommorrow?

— If my mother _______ . I will go with you.

A．climbing; will allow

B．climbing; allows

C．to climb; allows

D．to climb; will allow

标定滴定液的基准物质：EDTA滴定液（）.

A．氯化钠

B．氧化锌

C．无水碳酸钠

D．邻苯二甲酸氢钾