A.错误
B.正确
A.稳定性、效率高
B.安全性高
C.丰富的文件系统
D.开放源代码以及免费软件
Our singing group is going to give a ______ performance next Wednesday. Don't miss it!
A.live
B.living
C.lively
D.lovely
Which of the following is true?
A.Li Ming settled in Hong Kong after his return from Britain.
B.Li Ming ever won a lot of prizes in the world.
C.Li Ming is the best new singer in Hong Kong.
D.Li Ming was born in China.
A.开放源代码、快捷性、跨平台性强、效率高
B.封闭源代码、快捷性、跨平台性强、效率高
C.开放源代码、快捷性、跨平台性弱、效率高
D.封闭源代码、快捷性、跨平台性弱、效率高
A.操作系统是软件和硬件的接口
B.操作系统是主机和外设的接口
C.操作系统是源程序和目标程序的接口
D.操作系统是用户和计算机之间的接口