子痫前期分为轻度与重度,均应住院治疗。
参考答案:对
I don't have homework today.[ ]
A. some
B. much
C. any
D. many
若直线y=(a2-a)x+1-a与直线y=2x-1没有公共点,则实数a的值是( )
A.-1
B.2
C.-1或2
D.1或-2