集团客户网络服务等级协议规定普通级的跨省数据专线故障恢复时限为（）
A.2小时
B.3小时
C.4小时
D.8小时
参考答案：D
He prefers ______ at home reading to ______ out shopping on Sundays. [ ]
A. to stay, going
B. to stay, go
C. staying, going
D. staying, to go
足球竞赛规则共十八章。
