Mark was a student at this university from 2006 to 2011，________he studied very hard and was made Chairman of the Students’ Union.

A．during which time

B．for which time

C．during whose time

D．by that time

下列机动车辆保险的除外责任中，( )不是机动车商业第三者责任保险的除外责任。

A．被保险人或其允许的驾驶员所有或代管的财产

B．人工直接供油、高温烘烤造成的损失

C．本车上的一切人员和财产

D．私有、个人承包车辆的被保险人或其允许的驾驶员及其家庭成员，以及他们所有或代管的财产