You be careful with fire in the forest. It's dangerous. [ ]
A. must
B. may
C. can
答案:A
工作审议会
眶下间隙感染向颅内扩散,并发海绵窦血栓性静脉炎,其扩散途径通常是 :
A.面前静脉,颈内静脉
B.颞浅静脉,内眦静脉
C.面前静脉,颞浅静脉,颈内静脉
D.面前静脉,内眦静脉,眼静脉
E.眶内静脉,面前静脉