— Why are you always standing in class, Kitty?

—I can’t see the blackboard clearly because the two tall boys are sitting

       me.

A．in front of

B．next to

C．between

D．behind

在股票发行前，主承销商应当向中国证监会申请开立专门用于行使超额配售选择权的账户，并向证券交易所和中国证监会提交授权委托书及授权代表的有效签字样本。 ( )