根据句意及首字母提示，完成下列单词。

1. They are in the same grade, but they are in d_________ classes.

2. Zhao Wei is very beautiful (漂亮的), because (因为) she has two b________ eyes.

3. Yellow and blue can become (变成) g_________.

4. My sister and I have different l_________.

5. Michael, here is a l_________ for you. It's from your teacher.

可用于判断碳酸氢钠粉末中混有碳酸钠的实验方法是(    )

A．加热时无气体放出

B．滴加盐酸时有气泡放出

C．溶于水后滴加BaCl₂稀溶液有白色沉淀生成

D．溶于水后滴加澄清的石灰水有白色沉淀生成