He would feel pressured when _____ to answer the teacher’s questions in class.

A．I ask

B．I will be asked

C．asked

D．I would be asked

机械化分拣格口的布局的基本方法是：按运邮路线排列格口；流量大的格口尽量放上边格；流量小的格口可以设在下边格口。