下列说法不正确的是

A．配制FeCl₂溶液时，可将FeCl₂晶体先溶于浓盐酸，再加水稀释和少量铁屑保存

B．输油管道，为防止其表面被腐蚀应涂上隔水材料并与外电源负极相连

C．pH值均为9的NaOH溶液和Na₂CO₃溶液，两溶液中水的电离程度相同

D．0.1mol／L 弱酸HA溶液与0.05mol／L NaOH溶液等体积混合后所得溶液微粒浓度间有： 2c(H⁺)+c(HA) = c(A^－)+2 c(OH^－)

根据句意和首字母提示补全所缺单词

1. We usually eat d____in the Spring Festival.

2. Judy p     speaking English every morning, so she is good at it．

3. Don't talk l____in the reading room.

4. Linda can speak three l____ English, French,Chinese.

5. I'm not sure about it. Let's d____it at the meeting next Friday.