词汇运用，按照汉语提示和首字母填空。

1. Look! The                 (植物) near the window is very nice.

2. The backpack is                (在……下) the table.

3. What               (俱乐部) do you want to join?

4. I think playing basketball is                 (无聊的).

5. The music                 (听起来) good. I like it.

6. I think Zhao Benshan is a f                actor.

7. He lives on the t                 (第12) floor.

8. Can Mr. Li play the g                 ?

9. I r                like comedies.

10. He brushes the t                 every day.

EDTA滴定Mg²⁺和Ca²⁺时，加入三乙醇胺和盐酸羟胺的作用是什么？