由于在多媒体网络应用中需要同时传输语音、数字、文字、图形与视频信息等多种类型的数据，不同类型的数据对传输的服务要求不同，因此多媒体网络应用要求网络传输提供高速率与低 【6】 服务。
参考答案：延迟
解析： 本题考查点是多媒体网络应用中要求网络传输提供高速率与低延迟服务。在多媒体网络应用中，需要支持众多且特性各异的业务，网络中同时传输语音、数字、文字、图形与视频信息等多种类型的数据，不同类型的数据传输时的比特率、突发性相差很大。同时，它们对传输的服务要求也很不同，例如，有些需要面向连接的实时服务，如电话电视会议；有些可以使用面向无连接的非实时服务，如消息型数据传输业务等。因此多媒体网络应用要求网络传输提供高速率与低延迟服务。
“I don’t like my parents. They __36▲_ tell me I should do this, and I should not do that. It sometimes makes me angry.” Said Hang Hua, a middle school student in Nanjing. Do you have the same _37▲__? Why does it seem that some parents are so __38▲__ in their children’s eyes? Since(自从……以来) you were born, your parents have worried about everything about you. They __39▲__ about your choice(选择) of friends, the food you eat, your work at school, __40▲__ sleep you get, etc. All these things are part of your life. They want you to grow up __41▲__ and happily. So how can you __42▲__ things easier on yourself? It’s easier __43▲__ you think. Just let your parents know what you’re doing. Get them to know your friends. Call them if you stay somewhere else __44▲__ than usual. Say __45▲__ to them when you are wrong. Take responsibility(责任) for what you have done. Talk about your ideas with them. They may talk about __46▲__ with you. Most of all, try __47▲__ them. They are still __48▲__ being parents and need your help, too. Someday, when you become a parent, they may give you __49▲__ on how to get on with your __50▲__.
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