下列各组软件中,完全属于应用软件的一组是________。
A. UNIX,MS-Office 2010,MS-DOS
B. AutoCAD,Photoshop,PowerPoint 2010
C. Oracle,FORTRAN编译系统,系统诊断程序
D. 物流管理程序,Sybase,Wind 7
[音频]We all know that having friends is 1.___________, but why do we2._______ friendships with some people and not others? In some ways, the answer is 3. ___________: you become friends with someone because you have things in 4. ____________. Maybe you both like the same5. __________ team. Or perhaps you both love to play video games. Or maybe your 6. ____________ are similar: you’re a bit 7. ________ and the other person is, too.