I wasn’t complaining. I         expressed my surprise because I had never seen this happen in that case before.

A．mostly

B．rarely

C．nearly

D．merely

关于七氟烷，正确的叙述是（）。

A.无气味，对气道无刺激性

B.可产生七氟烷相关性肝炎

C.在碱石灰中可降解生成具有肾毒性的复合物A

D.因其血气分配系数较小，麻醉强度较大

E.在体内经肝代谢率大于2%