第7题: [单项选择]What does Sally do in the supermarketWhy doesn’t Tom like his job A. Because he doesn’t earn very much money. B. Because he has to work for quite a long time. C. Because he doesn’t have time for lunch. D. Because sometimes he has to work under bad weather. 参考答案:D
第12题: [单项选择]存储保护是对操作系统安全的基本要求,常采用哪种方式处理( ),如当发生越界或非法操作时,硬件产生中断,交由操作系统来处理。 A. 硬件中断 B. 软件 C. 中断屏蔽 D. 软件硬件结合 参考答案:D 答案解析:[分析] 存储保护是对安全操作系统的基本要求,存储保护与存储管理密切相关,操作系统进程和多个应用程序进程共享主存资源,为使应用程序既能利用操作系统提供的服务而又不破坏操作系统,以及各应用程序之间安全隔
第18题: [填空题]She is so________, it is inconceivable how she is generally thought to be________. A. A.percipient ... reasonable B.philanthropic ... dogmatic C.importunate ... fortunate D.inconsistent ... catholic E.self-aggrandizing ... unassuming