根据你生活经验．将以下活动所需时间由短到长排列______（填序号）．

A．体育课上打一场篮球赛

B．甩一下手

C．星期天去某工厂参加社会实践活动

D．小明将教室的黑板擦干净．

The only problem with the debate last week was that the beginning sounded more like a personal attack than a dispassionate, intellectual arguing.

A．discussion

B．argument

C．talk

D．speech