The students shouted with ________ when they heard the ________news.

A．excited; exciting

B．excitement; excited

C．excitement; exciting

D．exciting; exciting

学校口腔保健中学龄儿童最适宜的防龋措施是（）

A.学校氟水漱口

B.含氟牙膏刷牙

C.学校饮水加氟

D.窝沟封闭措施

E.含氟牙膏和窝沟封闭