在Internet网上进行通信时，为了标识网络和主机，需要给它们定义唯一的_____
题型：单项选择题
问题：
在Internet网上进行通信时，为了标识网络和主机，需要给它们定义唯一的______。
A．主机名称
B．服务器标识
C．IP地址
D．通信地址
题型：单项选择题
| 完形填空 | ||||
| Every morning, before dropping her son off at school, my friend would stop on the way to work to grab a quick breakfast.They tended to frequent the__1__restaurant every morning grabbing an egg sandwich, juice, coffee for herself, milk for her son. One day she__2__an additional breakfast.When they had eaten a  nd walked out of the door, she stopped and said good morning to a__3__man who was sitting alone outside the restaurant and__4__ him the additional breakfast she had bought.He__5__her, grinning, telling her it was the first meal he had in a great many days.She couldn't help but feel__6__and was glad she finally took action. She told her son that she had__7__him every day that week outside the restaurant and that no one, herself included, had__8__to offer him food, drink, comfort, etc.She further__9__that homelessness can happen to anyone and the importance of service to others and__10__acts of kindness were. And so__11__her kindness tradition...each day thereafter she and her son__12__to buy and supply the homeless gentleman with breakfast.The__13__was going on until they__14__several years later but the lesson was__15__implanted (植入) in her son by then. She__16__as she told me that this kindness legacy__17__to her son, who remembered this childhood tradition and lesson.Now a college graduate and__18__employed, her son stops every day at Starbucks for his morning cup of coffee and purchases a__19__for a homeless person nearby before commuting (上下班往返) to the__20__. What a great family legacy that he can pass along to his children as well... | ||||
|