President Hu Jintao said economic growth is the basis for strengthening defense capability, which

is ________ an important indicator of overall national strength. [       ]

A. in turn  

B. in return

C. on a large scale  

D. in a row

关于眼眶血管瘤，下列哪项正确()

A.大部分瘤体由纤维组织构成 

B.眼眶无明显病理改变可除外病变存在 

C.眶内静脉石存在可确认眶内血管瘤 

D.X线检查对血管瘤的诊断有定位、定量、定性价值 

E.瘤体无包膜