【单选题】听力原文:W: Is this the first time you've visited China, sir? M: Oh, no. I used to teach English in Peking University in the 1970s. What can we say about the man?
【单选题】A system administrator has determined that there is no network connectivity with the en0 interface. By doing a netstat -in, it is determined that the en0 interface is not showing up. Which of the fo...