根据首字母提示补全单词

1. We all know Zhan Tianyou was a famous e_______.

2. Tom b_______a small house for his little dog yesterday.

3. He is from Russia and he can speak R_______.

4. There is a new b_______over the river.

5. There will be a tunnel t_______the mountain next year.

淀粉在一定温度下吸水组成面坯，其主要显示的是（）。

A．胶体性质

B．黏稠性质

C．褐变性质

D．焦化性质