— Shall we play basketball this afternoon? 

— _____ I need to exercise very much. [ ]

A. Why not?

B. I agree with him.

C. You are lucky.

D. No, I don't want to.

IPVT开机认证故障中网络故障处理步骤为（）

A.确认上联物理线路是否正常

B.确认PPPoE、DHCP、LAN的相关数据配置是否正确

C.向相关部门核实网络接入账号是否正确有效

D.报网络维护部门查修