A：Wait a moment，Wang Lin. I have something exciting to tell you.

B：____

A：I made a new friend today. His name is Frank. He comes from America.

B：That's great！____

A：He is thin，but he looks strong.

B：____

A：He is as tall as I．But he is more athletic than I.

B：____

A：You are right. He said he would teach me how to play basketball.____

B：I'd love to. Thank you!

A．Would you like to make friends with him?

B．Frank is the same as me.

C．What does he look like?

D．Is Frank tall or short?

E．He is very quiet.

F．I think he likes sports very much.

G．What is it?

下列叙述不正确的是（    ）

用一根长为40cm的铁丝围成一个半径为r的扇形，求扇形的面积y与它的半径r之间的函数关系式，这个函数是二次函数吗？请写出半径r的取值范围．