化工生产中常常用到“三酸两碱”，“三酸”指硝酸、硫酸和盐酸，“两碱”指烧碱和纯碱。

（1）从物质的分类角度看，不恰当的一种物质是___________ 。

（2）“三酸”与“两碱”之间均可反应，若用化学方程式表示有六个（酸过量时），若用离子方程式表示却只有两个，请写出这两个离子方程式（酸过量时）。 __________________________________； 。

根据句意及首字母提示写出单词

1. S          time with family is very important to us.

2. In Brazil, you should w           your mouth with your napkin every time you take a drink.

3.In Switzerland if someone i           you to meet them, you have to be there on time.

4. Was I supposed to h   ____the spoon in my left hand?

5. We should speak to old people p    ____.

6. I am learning how to b           at the dinner table in France.

7. It is bad m   ____to make noise while eating soup.

8. You wouldn't believe how quickly my French has i              .

9. Mr Liu is very strict with us, while Mr Lee is pretty r    ____ about us.

10. The students are g    ____getting used to the pronunciation of the new English teacher.