根尖结构中，根伸长最快的部位是（  ）

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?

宪法规定公民享有监督权，可以监督国家机关及其工作人员的工作情况。公民的民主监督（   ）