Hello, I'm Lisa. I have four friends. I like to read a book on Sundays. But my friends are different. Jack likes to play computer games with friends. Amy likes to eat good food. Do you know what Lily likes to do? She likes to draw a picture. And Tom likes to play football.

⑴Lisa      ____

⑵Jack      ____

⑶Amy      ____

⑷Lily       ____

⑸Tom     ____

A.  B.  C. D. E.

已知一个四面体有五条棱长都等于2，则该四面体的体积最大值为(   )

计算：－3²＋(－3)²的值是(    )