照样子,写词语。
干干净净(AABB)
____ ____ ____
已知反比例函数y=k-2x的图象如图所示,则一元二次方程x2-(2k-1)x+k2-1=0根的情况是( )
Please read every sentence _______. The more _______ you are, the fewer mistakes you'll make.