OSPF的区域有哪几种类型?() A: 骨干区域(area 0) B: 基本区域 C: 末梢区域（stub） D: 完全末梢区域（totally stubby）

ospf的特殊区域有哪些? A: stub（末节区域） B: totallystubbyarea（完全末节区域） C: NSSA（not-so-stubby非末节区域） D: totallyNSSA（完全非末节区域）

OSPF的区域有哪几种类型?( ) A: 骨干区域(area 0) B: 标准区域 C: 末梢区域(stub) D: 完全末梢区域(totally stubby) E: 非纯末梢区域(NSSA)

【单选题】It is going to be fine tomorrow, ______. A. So is it B. So it is C. So it does D. So does it A. So is it B. So it is C. So it does D. So does it

It is impossible for little children to do much work in a short time. A: so; so; such B: such; so; such C: so; such; such D: such; such; so

It’s so vast, so deep, so 1___________.

-- David has made great progress recently. A: So he has; so you have B: So he has; so have you C: So has he; so have you D: So has he; so you have

If you give up the plan, ____. A: so will they B: so they do C: they will so D: so did they

Wow. It is rather hot today. Yes. __________yesterday. A: So it is B: So was it C: So is it D: So it was

-He said he enjoyed the quiet life of the country. -__________ and __________ . A: So did he; so did I B: So he did; so did I C: He did so; I did so D: Did he so; so I did