民族的魂主要指[ ]
A、民族文化
B、民族精神
C、传统美德
D、传统习俗
答案：B
— I am going to be a volunteer at the Asian Games to be held in Guangzhou this November．
— ! Me, too.
A．That’s it
B．Good luck
C．No problem
D．That’s great
已知2x-y=10，求[（x2+y2）-（x-y）2+2y（x-y）]÷y的值．
