--Were you in time for the meeting?

-- If I _________earlier, I would have .

A．was told

B．had been told

C．were to be told

D．should be told

关于栓塞的描述正确的是（）

A.肿瘤细胞栓塞不会引起转移瘤

B.脂肪栓塞是最常见的栓塞类型

C.羊水栓塞不会引起死亡

D.大循环的动脉栓塞，栓子多来自左心

E.减压病是氧气栓塞