慢性浅表性胃炎
A．肝炎后肝硬化B．血吸虫性肝硬化C．酒精性肝硬化D．胆汁性肝硬化E．心源性肝硬化
参考答案：C
已知幂函数f（x）=（m2-m-1）x1-m的图象关于y轴对称，则实数m=______．
-Is this your dictionary?
-No, it's _________. [ ]
A. him
B. his
C. her
D. she
