第1题: [单项选择]A. Tickets are available for future performances. B. The performance has been canceled. C. She wants to see the show tomorrow. D. The performance has already started. 参考答案:A 答案解析:[听力原文] M: Hello, I’d like two seats for this evening’s show. W: Sorry, but the performance is
第24题: [单项选择]对于有n个分区的Llnux系统,文件目录树的数目是______。 A. 1 B. 2 C. n-1 D. n 参考答案:A 答案解析:[解析] 在Linux系统中,所有文件和目录都表现为树上的一根树枝。树的根是整个文件系统的最顶层目录,称为根目录(/)。对于多分区的Linux系统,文件目录树的数目是1个。同一文件系统的目录和文件在物