_____ it is a good thing I did not get the post I had applied for, though I must admit that I was disappointed at the time.

A．By the way

B．In a way

C．In the way

D．In no way

青霉素普鲁卡因盐的药效比青霉素钾显著延长，其原理是（ ）

A．药物的扩散减慢

B．减小了药物的粒径

C．药物的半衰期增加

D．制成了溶解度小的盐

E．生成了难溶性的盐