一个IPv6地址为21DA:0000:0000:0000:02AA:000F:FE0_爱下问搜题

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问题填空题

一个IPv6地址为21DA:0000:0000:0000:02AA:000F:FE08:9C5A，如果采用双冒号表示法，那么该IPv6地址可以简写为______。

答案

参考答案：21DA::2AA:F:FE08:9C5A

解析：为了简化IPv6地址的表示，在一个以冒号十六进制表示法表示的IPv6地址中，如果几个连续位段的值都为0，那么这些0可以简写为::，称为双冒号表示法。

完形填空

A high school history teacher once told us, “if you make one close friend in school, you will be most fortunate. A true friend is someone who stays with you for life.” __1___ teaches that he was right. Good friendship is just not easily __2___.
It is possible that we simply do not stay in one place long enough for __3___ friendship to __4__. However, there can be _5__ disagreement on the need for each of us to think carefully about the kind of friendship we want.
To most of us, friendships are considered very important, but we need to have clear in our _6__ the kinds of friendship we want. Are they to be close or __7_ at arm’s length? Do we want to __8_ ourselves or do we want to walk on the surface? For some people, many friendships on the surface are _9__ enough---and that’s right. But at some point we need to _10__ that our expectations are the same as our friends’ expectations. The sharing of _11__ experience _12__ our tears as well as our dark dreams is the surest way to deepen friendships. But it __13_ be undertaken（进行）slowly and carried on only if there are _14__ of interest and action in return.
What are some of the _15__ of friendship? The greatest is the attraction to expect too much too soon. Deep relationships __16_ time. Another “major difficulty” is the selfishness to think one “possesses” the other, including his time and attention, Similarly, friendships __17___actions in return, in __18__ words, you must give as much as you take. Finally there is a question of taking care of . Unless you spend __19__ time together, talking on the phone, writing letters doing things together, friendships will die __20__

A．difficulties

B．differences

B．comfortable

单项选择题

根据《内经》记载，灸法起源于我国的（）

A、北方

B、中部

C、西方

D、南方

E、东方