柱节点的箍筋：当加密和非加密的肢数不同时，以“+”隔开;加密和非加密直径不同时，用“/”隔开。( )
参考答案：对
There are about three _____ people watching the program, and _____ of'them are from foreign
countries. [ ]
A. million; two million
B. millions; two millions
C. million; two millions
D. millions, two million
某患者于眼底检查时，发现右眼后极部视网膜有深浅不等的出血、渗出灶及微血管瘤，为明确诊断，最必须做下列哪项检查（）
A.B超
B.CT
C.眼底荧光素血管造影
D.视野
E.视觉电生理
