Obviously, the word "arrangement" underlined in the third paragraph refers to the fact that ______.

A．he was arranged to speak about his involvement

B．a campaign was under way to promote the administration

C．he was paid for speaking on NCLB developments

D．some critics made an arrangement to criticize him

下面技术中不能防止网络钓鱼攻击的是（）

A.在主页的底部设有一个明显链接，以提醒用户注意有关电子邮件诈骗的问题

B.利用数字证书（如USBKEY）进行登录

C.根据互联网内容分级联盟（ICRA.提供的内容分级标准对网站内容进行分级

D.安装杀毒软件和防火墙、及时升级、打补丁、加强员工安全意识