Our English teacher is our favorite. She's kind and humorous, but ________, she is strict with us.[ ]

A. in other words  

B. on the other hand

C. after all  

D. in all

1931年Dos Stantos首先用针穿刺__________动脉完成了最早的动脉造影；20世纪40年代，瑞典学者Jonsson首先用同轴针经皮穿刺__________动脉，将细针芯抽出，通过外套管送入细银线，通过细银线作引导将外套针向下送至__________处，行血管造影。