确定宴请时间应（）。
A．根据上司的提议
B．避开客人的禁忌日
C．注意选择在重大的节日举行
D．考虑秘书本人是否能出席
参考答案：A, B
Chinese President visited AIDS patients in Beijing's Ditan Hospital on the World AIDS Day, ________ was on Dec.1,2010, and ______ theme was to give all the AIDS patients medical care.
A．which; whose
B．which; of which
C．when; whose
D．on which, its
电脑刚开机时显示器的画面剧烈抖动，但过几分钟就恢复正常。出现这种现象的原因是（）。
A.电磁干扰
B.数据线没有插好
C.显卡兼容性故障
D.显示器受潮
