【判断题】在Lambda表达式主体中允许有返回值,当只有一条return语句时,也可以省略return关键字。()
【单选题】On no account can parents always _______ with the children, otherwise they will become more greedy and come up with more unreasonable requests.
【单选题】The passage tells us that in the future ______.
A.
children will not be taught in schools
B.
no teachers will be needed
C.
teachers will be less knowledgeable
D.
children will learn life skills at school
【简答题】虚拟设备是通过SPOOLing技术把( )设备变成能为若干用户共享的设备。