From the text, we can infer that ______. A.some computers don't have system software B.softwar
From the text, we can infer that ______.
A.some computers don't have system software
B.software such as Winword, Excel and Foxpro focus on a single task
C.for a computer to perform a useful task, both the system and application software are inevitable
D.language software helps people to learn a language