问题
单项选择题
以下关于操作系统的叙述中，正确的是( )。
A．操作系统是计算机软件系统中的核心软件
B．操作系统属于应用软件
C．Windows PC机惟一的操作系统
D．操作系统的5大功能是：启动、打印、显示、文件存取和关机
答案
参考答案：A
解析： 操作系统是计算机软件系统中的核心软件。操作系统是系统软件的一种。
搜题请搜索小程序“爱下问搜题”
以下关于操作系统的叙述中，正确的是( )。
A．操作系统是计算机软件系统中的核心软件
B．操作系统属于应用软件
C．Windows PC机惟一的操作系统
D．操作系统的5大功能是：启动、打印、显示、文件存取和关机
参考答案：A
解析： 操作系统是计算机软件系统中的核心软件。操作系统是系统软件的一种。
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| These days, computer games are becoming more and more popular in many cities and towns. A lot of small shops along busy 1 have changed into 2 game houses in order to get more money. These places are always crowded with 3 especially young boys. In the computer game houses, people 4 a lot of money playing games on machines. It's 5 for one to win a computer game, but one can make progress after 6 again and again. People have a kind of gambling psychology (赌博心理) when they play computer games. The more they 7 , the more they want to win. For school boys, they don't care about their lessons. When class is over, they run to the nearby computer game house. Some of them can get enough money 8 their parents. But some of them are not 9 enough to get the money. They begin to take other students' money and 10 thieves. | ||||
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