单选题
中级
2010-11-22
请回答22________
参考答案
F
答案解析
Woman: We've had a big problem lately with screen savers. Lots of staff like to load these and several times the whole system has gone down or else there's been a virus. Well, they've been banned completely now, and we just have to hope that the staff do as they are told. Yes, we have to monitor things very carefully from here.
