At the beginning of a speech, it is very important to grab the audience's attention and make them interested in ____ you have to say．

A．what

B．which

C．that

D．who

企业网银维护业务中，企业网银账户管理不包括以下哪一项（）

A.增加企业网银的账户

B.修改企业网银的账户

C.删除企业网银的账户

D.冻结企业网银的账户