“首过消除”是指某些药物口服通过胃肠粘膜吸收，及第一次随门静脉血流经肝脏时，有部分被肝细胞及胃肠粘膜中酶代谢转化，从而使进人体循环的量减少的现象。()

------ What did he want to know, Jim?

-------_________ I could finish writing the report.

A．When was it

B．It was when that

C．It was when

D．When it was that