Rain is pouring down from the sky without any sign of stopping．Farmers begin to worry about their crops since it _____ as long as 24 hours．

A．would rain

B．had rained

C．was raining

D．has been raining

某医院护士胡某，在医院工作期间，为了赚取“外快”，为某甲做节育复通手术。因缺乏临床经验，导致某甲因大出血而死亡；胡某的行为构成( )

A．非法进行节育手术罪

B．过失致人死亡罪

C．医疗责任事故罪

D．非法行医罪