在进行宏观经济形势分析时,常用()来说明货币的流动性。
A.M1+M2
B.M1-M2
C.M1*M2
D.M1/M2
参考答案:D
把抛物线y=x2+4x+5改写成y=(x+h)2+k的形式为( ),其顶点坐标为( )。
— Cinderella has been learning Chinese in Beijing University for the past four years .
— No wonder she ___above her colleagues in Chinese.[ ]
A. stands out
B. sticks out
C. comes out
D. sorts out