问题
单项选择题
下面不具备多道程序设计的特点的是
A．Mac
B．UNIX
C．Windows
D．DOS
答案
参考答案：D
解析： 多道程序设计是在计算机内存中同时存放几道相互独立的程序，使它们在管理程序控制之下，相互穿插运行。DOS系统没有多道程序设计的特点。
搜题请搜索小程序“爱下问搜题”
下面不具备多道程序设计的特点的是
A．Mac
B．UNIX
C．Windows
D．DOS
参考答案：D
解析： 多道程序设计是在计算机内存中同时存放几道相互独立的程序，使它们在管理程序控制之下，相互穿插运行。DOS系统没有多道程序设计的特点。
| 用方框内的词语完成短文。 | |
| |
| We don't have many rules at home. In my room,for example, I 1 do what I want.My favorite pop group is " Take Four", so I have a lot of their posters (海报) on the wall. Mum thinks it's okay. I 2 play their music as loudly as I like, but sometimes Mum comes and shutsthe door.l have a TV in my room, too. Before I 3 watch TV, I 4 do my homework. "Study comes first. " Mum always says. From Monday to Friday, when I 5 go to school, I 6 watch TV in the evening. At the weekend, I 7 watch TV till 11 0'clock. Once a week, I 8 clean my room.It only takes half an hour,so it's not too bad. Mum cleans the other rooms, and I 9 help her. When there is a lot to do, I 10 go shopping. |