关于血管网织细胞瘤的描述不正确的是（）。

A.为良性肿瘤

B.可多发

C.瘤结节与囊大小无关

D.病程囊性长，实性短

E.实性肿瘤术前可行血管栓塞

She has visited Hong Kong_______, but she wants to be there a_____  time.

A．two, three

B．twice, three

C．twice, third

D．two, third