对于妊娠患者，一般认为什么时期是施行手术的最佳时机（）。

A.妊娠1～2个月

B.妊娠3～4个月

C.妊娠4～6个月

D.妊娠6～8个月

E.妊娠末期

       I toured Jiu Zhai Gou, I was deeply impressed with its beautiful scenery.

A．For the first time

B．At first

C．It was the first time

D．The first time