视网膜中央静脉回流进入下列哪条血管()
A.眼上静脉
B.眼下静脉
C.眶上静脉
D.蜗静脉
E.眶下静脉
参考答案:A
解析:视网膜中央静脉经眼上静脉或直接回流到海绵窦。
She likes pets. She has three dogs. _____, she has a cute cat. [ ]
A. But
B. Except
C. Beside
D. Besides
Mr. Brown arrived at the airport at 5 'clock _______ the evening of Saturday.[ ]
A. on
B. of
C. in
D. at