Give _________some apples, please. [ ]
A. I
B. my
C. me
D. mine
C
把x4-2x2y2+y4分解因式,结果是( )
A.(x-y)4
B.(x2-y2)4
C.[(x+y)(x-y)]2
D.(x+y)2(x-y)2
什么叫伤筋?