该图是何种疾病的荧光造影图()
A.视网膜中央动脉阻塞
B.视网膜中央静脉阻塞
C.视网膜分支动脉阻塞
D.视网膜分支静脉阻塞
E.视网膜静脉周围炎
参考答案:B
. Everyone in our class was working hard and doing what we could _______ a good college.
A.Enter
B.to enter
C.Entering
D.entered
要素市场具有评价要素价值、生成要素价格和__________的功能。