After the quarrel, I tried to fix the misunderstanding between us, but all my efforts seemed ______.
A:in need
B:in peace
C:in vain
D:in trouble
“纵然游遍美丽的宫殿享尽富贵荣华,但是无论我在哪里,都怀念我的家。”诗人之所以这样是因为家的最主要的特点是( )
如图为我国四幅省区轮廓图,读图回答下题。