A:
B:
C:
D:
—No, they are not mine. They belong to _________.
fēng píng làng jìng
róng guāng huàn fā
____
miàn hóng ěr chì
zì yóu zì zài
若m=8,n=5,m+n=-m+n,则m-n的值为( )
英国侵略中国的鸦片战争发生在( )