[多项选择]What functions do routers perform in a network?() A. Packet Switching B. Access Layer Security C. Path Selection. D. VLAN Membership Assignment. E. Bridging between LAN segments. F. Micro-segmentation of Broadcast Domains.
第31题: [单项选择]The rebels have done all the following EXCEPT ______ . A. destroying two electricity towers B. contacting a Mexico City newspaper C. threatening to take action in the capital D. strengthening security at the airport 参考答案:D 答案解析:do all except(but)(除了……之外,做了所有的……)是比较常见的出题形式。本题测试考生对新闻主要内容的理解。根据原文中的主要内容,可得出正确答案为D。