根据句意及首字母提示完成单词。

1. It's too hot, we need to drink more w_____.  

2. Mr. Black looks u_____, but he is a really good man.  

3. —How is the salad?

    —Very d_____.

4. —Where is the post office?

    —It's at the c_____ of the street.  

5. The movie Avatar is great. We d_____ to see it again.

霍尔效应的产生是由于运动电荷受到磁场中洛伦兹力的作用结果。