首字母填词。

1. He gave his daughter a large a______ of money.

2. Bread is baked in an o______.

3. You should a_____ some water to the soup.

4. We need two t_____ of honey.

5. How m______ yogurt do you want to buy?

软水器的软化原理是基于离子交换反应的原理，当生水流经交换剂层时，生水中的钙离子与钠离子树脂中的（）交换反应，使生水得到软化。

A、钙离子

B、钠离子

C、盐水