(30）下面的4个IP地址，属于C类地址的是( ）。

A．） 10. 10. 10. 10

B．） 222. 222.0.20

C．） 224.0.0.201

D．） 244. 30. 21. 46

[单选题]若机车A123的IP地址为10.12.133.1，机车B321的IP地址为10.12.133.2，交换两车的SIM卡，机车A123的IP地址则变为：（）A .10.12.133.1B .10.12.133.2C .无法获取IP地址D .交换SIM卡无法上网

[单选题]10．A． eatB． eatsC． to eatD． eating

[单选题]10．A． impossibleB． imaginativeC． importantD． inactive

[单选题]10．A．youB．themC．theyD．we

[单选题]10． The meeting _________ because of the bad weather．A． put offB． put downC．is put olfD．is put down

[单选题]下面的4个IP地址，属于C类地址的是( )。A．10.10.10.0B．222.222.0.20C．224.0.0.201D．244.30.21.46

[多选题] 若IP地址10.110.53.233的掩码长度与下列选项中掩码长度相同，与10.110.53.233在同一网段的有（）.A . 10.110.48.10mask255.255.248.0B . 10.110.43.10mask255.255.0.0C . 10.110.43.10mask255.255.248.0D . 10.110.48.10mask255.255.252.0

[单选题]10．—_________are you staying?—For a week．A． How longB． How soonC． How oftenD． How many

[单选题]10．—________ will it start?—In a week．A． How soonB． How longC． How oftenD． How far

[单选题]10． The most important thing is _________A． what do you learnB． what did you learnC． what you have learnD． what you learnt