________ the moment they heard the starting signal given by the teacher.  [ ]

A. Ran the children down the hill       

B. Down the hill did the children run

C. Down the hill ran the children

D. Down the hill the children ran

风险管理与保险存在着密切关系，下列关于其关系的表述，错误的是（）。

A.风险是保险产生和存在的前提

B.保险是风险处理的传统有效的措施

C.风险的发展是保险发展的主观依据

D.保险经营效益要受风险管理技术的制约