To all the famous artists’ surprise, the unknown woman’s two_______paintings are also on show in the art exhibition.

A．littie blue oil

B．blue little oil

C．oil blue little

D．little oil blue

被灭活的病毒不能保留的特性是

A．抗原性

B．红细胞吸附性

C．感染性

D．血凝性

E．细胞融合