词语辨析
A. close, closely
It seems that the two incidents are separate, but, as a matter of fact, they are _______ associated with one another.
ln order to have a _______ look at it, he drew a chair _______ , and sat down beside me.
I studied,the map _______to find a short cut to the destination.
He was listening_______while I was telling my experience in the mountains.
B. nation, state, country
China is one of the largest _______ in the world.
All  the land belongs to the_______ , so it is not al-lowed for personal use.
The whole _______ fell in deep sorrow at the sad news．
C. used to, be used to
We _______ swim in this river, but now it has be-come too dirty to swim in.
The city life is busy, quick and noisy, but I think you will_______it．
If you have_______staying up,it is not easy to change it.
Sometimes,a pointed umbrella may_______protect yourself from attack.