拥塞策略：_爱下问搜题

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问题问答题简答题

拥塞策略：

答案

参考答案：

传输层：重传、乱序缓存、确认、流控制、确定超时策略；网络层：子网内部的虚电路与数据报策略、分组排队和服务策略、分组丢弃策略、路由算法、分组生存策略；DL层：重传、乱序缓存、确认、流控制策略。

阅读理解与欣赏

阅读下面文字，完成问题。

送东阳马生序（节选）

　　余幼时即嗜学。家贫，无从致书以观，每假借于藏书之家，手自笔录，计日以还。天大寒，砚冰坚，手指不可屈伸，弗之怠。录毕，走送之，不敢稍逾约。以是人多以书假余，余因得遍观群书。既加冠，益慕圣贤之道。又患无硕师名人与游，尝趋百里外，从乡之先达执经叩问。先达德隆望尊，门人弟子填其室，未尝稍降辞色。余立侍左右，援疑质理，俯身倾耳以请；或遇其叱咄，色愈恭，礼愈至，不敢出一言以复；俟其欣悦，则又请焉。故余虽愚，卒获有所闻。

　　当余之从师也，负箧曳屣行深山巨谷中。穷冬烈风，大雪深数尺，足肤皲裂而不知，至舍，四支僵劲不能动，媵人持汤沃灌，以衾拥覆，久而乃和。寓逆旅，主人日再食，无鲜肥滋味之享。同舍生皆被绮绣，戴朱缨宝饰之帽，腰白玉之环，左佩刀，右备容臭，烨然若神人；余则缊袍敝衣处其间，略无慕艳意，以中有足乐者，不知口体之奉不若人也。盖余之勤且艰若此。

1、解释下列句子中加粗的词。

①录毕，走送之（　　）

②俟其欣悦，则又请焉（　　）

③媵人持汤沃灌（　　）

④左佩刀，右备容臭（　　）

2、下列加粗的词意思完全相同一项是（　　）

A、既加冠宋　　　　既成列

B、益慕圣贤之道　　杀数人，胡虏益解

C、足肤皲裂而不知　久而乃和

D、卒获有所闻　　　士卒不尽饮

3、翻译下面句子。

①门人弟子填其室，未尝稍降辞色

译：_____________________________

②以中有足乐者，不知口体之奉不若人也

译：_____________________________

4、结合全文，说说作者最终能够学业有成的三条理由（各用四个字概括）。

①_______________________________

②_______________________________

③_______________________________

5、本文与《黄生借书说》虽然着眼点不同，但两文某些观点仍有其共同之处，请概述。

答：_____________________________

完形填空

Signs can sometimes be seen at the entrance of a house, expressing that a tramp（流浪汉）has passed. This special sign-language is frequently   50   by tramps to inform their    51   whether the host of a certain house is friendly or unfriendly, and to   52   them the trouble of making unnecessary calls.
Quite   53   one day, I came across a real tramp. He was such a rare sight these days that I stood some distance away and watched him. He was dressed just as a tramp should be in, old worn trousers, and a jacket many sizes too big for him. On his head there was a battered old hat and his boots were so old and worn; they were almost coming into pieces.
But the man himself looked cheerful as if he had not a   54   in the world. He rubbed his nose with his forefinger,    55   a funny turn, laid a small parcel    56   the front gate, and began   57   a sign made by a former caller. Although the sign was meaningless to me, it must have been   58  , for the tramp’s face lit up with satisfaction. He entered the front gate   59   and rang the bell. When the door opened, I saw him raise his hat   60   couldn’t hear his words. The   61   was very short indeed, for no sooner had he spoken a few words than the door closed fiercely in his face.
I felt   62   for him as he walked sadly out of the house. But just as quickly, his face lit up again and he moved quickly towards the gate. There he stopped, looked at the sign, and shook his head seriously as if he had made a bad mistake.   63   deeply into his pockets, he produced a piece of chalk, rubbed out the existing sign and made a new one in its place. He stared at it for a moment smiling to himself, then gathered his belongings, pushed back his hat and began walking towards the next house at an unhurried   64  , whistling as he went along.

D．responsibility

A．confidently

C．consequently

D．consciously

A．conversation

B．introduction