【判断题】持续性病毒感染的特点是病毒虽已被清除掉,但症状仍可持续数年甚至数十年。( )
【单选题】The newlybuilt cafe, the walls of ________ are painted light green, is really a peaceful place for us, especially after hard work. [ ]
【单选题】What does Student B mean when she says this?
A.
It's hard to imagine an emotionally independent machine.
B.
Many new things nowadays were once ridiculous dreams.
C.
The technological changes have greatly influenced our life.
D.
People communicate better and live a more comfortable life.
【简答题】U nstressed words sound very light and .
【简答题】计算机网络的发展分几个阶段?各有什么特点?