【单选题】运输层的两个数据报传输协议是TCP和( )。
【单选题】—He looks unhappy. —Yes,but he can’t say what it is_______is bothering him.
【单选题】MAC地址又称网卡地址,是用于在物理上标识主机的,以下4个选项中,只有选项( )所表示的MAC地址是正确的
【单选题】当同学们获悉本班取得学校合唱比赛第一名的成绩时欣喜若狂。他们的情绪状态属于 ( )
【简答题】What can’t he drink and why? He can’t drink the , because it is .
【单选题】MAC地址又称网卡地址,是用于在物理上标识主机的,以下4个选项中,只有选项()所表示的MAC地址是正确的。
【单选题】What problem does the man have while working on his paper?
A.
He can’t find good examples to illustrate his point.
B.
He can’t find a peaceful place to do the assignment.
C.
He can’t decide whether to include the effort part of skiing.
D.
He doesn’t know how to describe the beautiful country scenery.