It has been proved ___ eating vegetables in childhood helps to protect you against serious illnesses in later life.

A．if

B．because

C．when

D．that

下列不属于机动车商业第三者责任险的保险责任成立的要件是( )。

A．被保险人、第三者(他人)

B．机动车辆、使用过程

C．道路风险、人为风险

D．被保险人允许的合格的驾驶员和意外事故