Whenever and wherever we are, keep in mind that we should listen more to others. It’s wrong to express ourselves without thinking. Just as we all know, ___________.

A．a good beginning makes a good ending

B．a still tongue makes a wise head

C．a great hope makes a great man

D．a good husband makes a good wife

德尔菲预测法的特点不包括（）。

A．匿名性

B．反馈性

C．预测性

D．趋同性