问题
单项选择题
对于这样几个网段：172.168.16.0，172.168.17.0，172.168.18.0，172.168.19.0，最好用下列（）网段实现路由汇总.
A.172.168.16.0/21
B.172.168.17.0/21
C.172.168.16.0/22
D.172.168.20.0/20
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
对于这样几个网段：172.168.16.0，172.168.17.0，172.168.18.0，172.168.19.0，最好用下列（）网段实现路由汇总.
A.172.168.16.0/21
B.172.168.17.0/21
C.172.168.16.0/22
D.172.168.20.0/20
参考答案：C
选择方框内所给短语的适当形式填空（共6小题；每小题1分，满分6分）
小题2:Instead of _______ his time and energy ______ his studies, he wasted a lot of his time playing games. 小题3:Some people believe that the world is sure _________disaster if we go on destroying the environment like this. 小题4:Our head teacher often encourages us ___________ in class discussions and share opinions with our classmates. 小题5:Opening the door, the man was shocked to find that ________ some old books, there was almost nothing left. 小题6:Many high buildings have sprung up in our city in recent years, making it _______ a new look. |