dows系统安装时生成的DocumentsandSettings、Winnt和System32文件夹是不能随意更改的，因为它们是__（1）__。在Windows的文件系统中，__（2）__是一个合法的文件名：__（3）__不是合法的可执行文件的扩展名。
空白（3）处应选择（）
A.exe
B.com
C.rar
D.bat
参考答案：C
解析：试题（3）正确答案为C。exe、com是可执行文件的扩展名，bat是批处理文件（可执行）的扩展名，rar是压缩文件的扩展名。本题考查的是Windows系统的基本知识。
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| This is Center Street. Center Street is a great place to have 1 . There are 2 shops on it. It is a very 3 street. If you want to 4 , you can go to the video arcade. It is 5 from the big supermarket. There is also a new park 6 the supermarket. It is 7 and quiet. You can 8 your lunch in it. If you want to see 9 , you can go to the movie house. It is 10 the supermarket and the park. | ||||
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