–---I’ve decided to spend the summer holidays traveling in Australia.

----Oh, ________!

A．if only I could go with you

B．what a good news it is

C．how happily I was to hear that

D．what exciting to hear the news

结扎疗法可用于多种病症，但不宜用于：（）

A.瘤

B.赘疣

C.内痔

D.脱疽

E.血瘤