用所给词的正确形式填空。

1. I            (think) good friends should help each other.

2. My father is             (athletic) than my uncle.

3. There are so many           (different)  between the two dictionaries.    

4. My little brother is a shy boy.  He is         _(quiet) than me.

5. Would you like             (go) to the movies with me tonight?

一个质量为60kg、底面积为200cm²的物体放在面积为1m²的水平桌面上，则物体对桌面的压力为______N，物体对桌面的压强为______Pa．