对物种多样性的表述中，生态学强调物种多样性的自然选择、适应进化的生物学属性。
Given a Cisco Unified Computing System， which is a valid port type in end-host mode？（） [" Server"," End device"," Node"," Host"," Virtual"]
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true?（） [" Router C will use ICMP to inform Host 1 that Host 2 cannot be reached."," Router C will use ICMP to inform Router B that Host 2 cannot be reached."," Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached."," Router C will send a Destination Unreachable message type."," Router C will send a Router Selection message type."," Router C will send a Source Quench message type."]
简述班级组织的改造。
夏目漱石的职业是？（） ["医生","军官","农民","大学讲师"]
利他行
