第16题: [单项选择]If a person finds getting up early a problem, most probably ______. A. he is a lazy person B. he refuses to follow his own energy cycle C. he is not sure when his energy is low D. he is at his peak in the afternoon or evening 参考答案:D 答案解析:[分析] 所谓的“懒惰”实际上是因为这个人的能量在夜里已经达到顶峰。如果一个人不愿早起,那就说明他的能量顶峰不在早上。所以D选项是正确答案。
第30题: [单项选择]根据红皮书的计算机安全系统评价准则,下面属于C2级安全准则的操作系统是( )。 A. DOS B. Windows95 C. Windows98 D. Unix 参考答案:D 答案解析:[分析] 能够达到C2级的常见操作系统有;UNIX系统,XENIX,Novell 3.x或更高版本以及Windows NT。