内容过滤技术的应用领域包括（）
A.防病毒
B.网页防篡改
C.防火墙
D.入侵检测
E.反垃圾邮件
参考答案：A, C, D, E
He went to the boy, and _______ him on the shoulder, took him away.
A．pat
B．patting
C．patted
D．to pat
商业银行不得对哪些用途的业务进行授信？
