加强计算机的安全管理，建立病毒防护系统并不断加以更新，重要的数据资料应定期进行备份。
参考答案：对
The man, suspected________having stolen the jewels of the shop, was missing last night, although
he was watched over by the police.[ ]
A. of
B. for
C. about
D. with
X战纪的作者是谁？
